mirror of
https://code.forgejo.org/infrastructure/documentation
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split the README into separate files for clarity
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README.md
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README.md
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@ -1,493 +1,25 @@
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The resources used by the infrastructure are in the https://code.forgejo.org/infrastructure/ organization.
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There is a [dedicated chatroom](https://matrix.to/#/#forgejo-ci:matrix.org). A mirror of this repository is available at https://git.pub.solar/forgejo/infrastructure-documentation.
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## LXC Hosts
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## Table of content
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All LXC hosts are setup with [lxc-helpers](https://code.forgejo.org/forgejo/lxc-helpers/).
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- Setting up a new [K8S/DRBD/NFS k8s node](k8s.md)
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- Setting up a new [LXC/DRBD Host](lxc.md)
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- Managing services with a [LXC/DRBD/nginx stack](drbd-nginx-lxc.md)
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- Installing a [Forgejo runner in an LXC container](runner-lxc.md)
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- Managing the [Octopuce host](octopuce.md)
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```sh
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name=forgejo-host
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lxc-helpers.sh lxc_container_run $name -- sudo --user debian bash
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```
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See https://github.com/mikesart/inotify-info. Running multiple LXC
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containers will quickly use the default limit (128 on bookworm).
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|
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```sh
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echo fs.inotify.max_user_instances=8192 | sudo tee -a /etc/sysctl.conf
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sudo sysctl -p
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```
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### Unprivileged
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```sh
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name=forgejo-host
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lxc-helpers.sh lxc_container_create --config "unprivileged" $name
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echo "lxc.start.auto = 1" | sudo tee -a /var/lib/lxc/$name/config
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lxc-helpers.sh lxc_container_start $name
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lxc-helpers.sh lxc_container_user_install $name $(id -u) $USER
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```
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### Docker enabled
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```sh
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name=forgejo-host
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lxc-helpers.sh lxc_container_create --config "docker" $name
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echo "lxc.start.auto = 1" | sudo tee -a /var/lib/lxc/$name/config
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lxc-helpers.sh lxc_container_start $name
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lxc-helpers.sh lxc_install_docker $name
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lxc-helpers.sh lxc_container_user_install $name $(id -u) $USER
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```
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### K8S enabled
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```sh
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name=forgejo-host
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lxc-helpers.sh lxc_container_create --config "k8s" $name
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echo "lxc.start.auto = 1" | sudo tee -a /var/lib/lxc/$name/config
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lxc-helpers.sh lxc_container_start $name
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lxc-helpers.sh lxc_container_user_install $name $(id -u) $USER
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```
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### Docker and LXC enabled
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```sh
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name=forgejo-host
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ipv4=10.85.12
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ipv6=fc33
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lxc-helpers.sh lxc_container_create --config "docker lxc" $name
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echo "lxc.start.auto = 1" | sudo tee -a /var/lib/lxc/$name/config
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lxc-helpers.sh lxc_container_start $name
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lxc-helpers.sh lxc_install_docker $name
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lxc-helpers.sh lxc_install_lxc $name $ipv4 $ipv6
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lxc-helpers.sh lxc_container_user_install $name $(id -u) $USER
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```
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## firewall
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```sh
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sudo apt-get install ufw
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```
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|
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```sh
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sudo ufw default allow incoming
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sudo ufw default allow outgoing
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sudo ufw default allow routed
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interface=enp5s0
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function internode() {
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for from in $@ ; do
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for to in $@ ; do
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if test $from != $to ; then
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sudo ufw allow in on $interface from $from to $to
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fi
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done
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done
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}
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ipv4="65.108.204.171 88.198.58.177"
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internode $ipv4
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ipv6="2a01:4f9:1a:a082::2 2a01:4f8:222:507::2"
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internode $ipv6
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for host_ip in $ipv4 $ipv6 ; do
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sudo ufw allow in on $interface to $host_ip port 22 proto tcp
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sudo ufw deny in on $interface log-all to $host_ip
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done
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failover="188.40.16.47 2a01:4f8:fff2:48::2"
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for public_ip in $failover ; do
|
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sudo ufw allow in on $interface to $public_ip port 22,80,443,2000:3000 proto tcp
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sudo ufw deny in on $interface log-all to $public_ip
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done
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```
|
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|
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```sh
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sudo systemctl enable ufw
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sudo ufw enable
|
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```
|
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|
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```sh
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sudo ufw status verbose
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```
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## nftables
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```sh
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sudo nft list ruleset
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```
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## Host reverse proxy
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The reverse proxy on a host forwards to the designated LXC container with
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something like the following examples in
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`/etc/nginx/sites-available/example.com`, where A.B.C.D is the
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IP allocated to the LXC container running the web service.
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And symlink:
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```sh
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ln -s /etc/nginx/sites-available/example.com /etc/nginx/sites-enabled/example.com
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```
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The certificate is obtained once and automatically renewed with:
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|
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```
|
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sudo apt-get install certbot python3-certbot-nginx
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sudo certbot -n --agree-tos --email contact@forgejo.org -d example.com --nginx
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```
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When removing a configuration, the certificate can also be removed with:
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```
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sudo certbot delete --cert-name example.com
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```
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Forwarding TCP streams (useful for ssh) requires installing the module:
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```sh
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sudo apt-get install libnginx-mod-stream
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```
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Rate limiting crawlers is done by adding the following to `/etc/nginx/conf.d/limit.conf`:
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```
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# http://nginx.org/en/docs/http/ngx_http_limit_req_module.html
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# https://blog.nginx.org/blog/rate-limiting-nginx
|
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map $http_user_agent $isbot_ua {
|
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default 0;
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~*(GoogleBot|GoogleOther|bingbot|YandexBot) 1;
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}
|
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map $isbot_ua $limit_bot {
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0 "";
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1 $binary_remote_addr;
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}
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limit_req_zone $limit_bot zone=bots:10m rate=1r/m;
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limit_req_status 429;
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```
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and the following in the location to be rate limited:
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```
|
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location / {
|
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limit_req zone=bots burst=2 nodelay;
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...
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```
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|
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## Host wakeup-on-logs
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https://code.forgejo.org/infrastructure/wakeup-on-logs
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|
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### K8S wakeup-on-logs script
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|
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```
|
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$ cat /etc/wakeup-on-logs/forgejo-v8
|
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#!/bin/bash
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|
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set -x
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|
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self="${BASH_SOURCE[0]}"
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name=$(basename $self)
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# keep it lower than https://code.forgejo.org/infrastructure/wakeup-on-logs
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# otherwise it will get killed by it
|
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timeout=4m
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|
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function lxc_run() {
|
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lxc-attach $name -- sudo --user debian KUBECONFIG=/etc/rancher/k3s/k3s.yaml "$@" |& tee -a /var/log/$name.log
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}
|
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|
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image=codeberg.org/forgejo-experimental/forgejo
|
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major=${name##*v}
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digest=$(skopeo inspect --format "{{.Digest}}" docker://$image:$major-rootless)
|
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values=https://code.forgejo.org/infrastructure/k8s/raw/branch/main/forgejo-v$major/values.yml
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lxc_run helm upgrade forgejo -f $values -f /home/debian/secrets.yml oci://code.forgejo.org/forgejo-helm/forgejo --atomic --wait --timeout $timeout --install --set image.digest=$digest
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```
|
||||
|
||||
### Forgejo example
|
||||
|
||||
```
|
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server {
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listen 80;
|
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listen [::]:80;
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|
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server_name example.com;
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location / {
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proxy_pass http://A.B.C.D:8080;
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proxy_set_header Host $host;
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proxy_set_header X-Real-IP $remote_addr;
|
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto https;
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client_max_body_size 2G;
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}
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}
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```
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### GitLab example
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||||
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```nginx
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server {
|
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listen 80;
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listen [::]:80;
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server_name example.com;
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location / {
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection "upgrade";
|
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proxy_set_header Host $http_host;
|
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
|
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proxy_set_header X-Forwarded-Proto $scheme;
|
||||
proxy_set_header X-Frame-Options SAMEORIGIN;
|
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|
||||
client_body_timeout 60;
|
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client_max_body_size 200M;
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send_timeout 1200;
|
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lingering_timeout 5;
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|
||||
proxy_buffering off;
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proxy_connect_timeout 90;
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proxy_send_timeout 300;
|
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proxy_read_timeout 600s;
|
||||
|
||||
proxy_pass http://example.com;
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||||
proxy_http_version 1.1;
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||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Vanila example
|
||||
|
||||
```nginx
|
||||
server {
|
||||
listen 80;
|
||||
listen [::]:80;
|
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|
||||
server_name example.com;
|
||||
|
||||
location / {
|
||||
proxy_pass http://A.B.C.D;
|
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proxy_set_header Host $host;
|
||||
proxy_set_header X-Real-IP $remote_addr;
|
||||
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
|
||||
proxy_set_header X-Forwarded-Proto https;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### 302 redirection
|
||||
|
||||
```nginx
|
||||
server {
|
||||
listen 80;
|
||||
listen [::]:80;
|
||||
|
||||
server_name example.com;
|
||||
return 302 https://other.example.com$request_uri;
|
||||
}
|
||||
```
|
||||
|
||||
## Forgejo runners
|
||||
|
||||
The LXC container in which the runner is installed must have capabilities that support the backend.
|
||||
|
||||
- docker:// needs a Docker enabled container
|
||||
- lxc:// needs a Docker and LXC enabled container
|
||||
|
||||
The runners it contains are not started at boot, it must be done manually. The bash history has the command line to do so.
|
||||
|
||||
### Installation
|
||||
|
||||
```shell
|
||||
version=3.5.0
|
||||
sudo wget -O /usr/local/bin/forgejo-runner-$version https://code.forgejo.org/forgejo/runner/releases/download/v$version/forgejo-runner-$version-linux-amd64
|
||||
sudo chmod +x /usr/local/bin/forgejo-runner-$version
|
||||
echo 'export TERM=xterm-256color' >> .bashrc
|
||||
```
|
||||
|
||||
### Creating a runner
|
||||
|
||||
Multiple runners can co-exist on the same machine. To keep things
|
||||
organized they are located in a directory that is the same as the URL
|
||||
from which the token is obtained. For instance
|
||||
DIR=codeberg.org/forgejo-integration means that the token was obtained from the
|
||||
https://codeberg.org/forgejo-integration organization.
|
||||
|
||||
If a runner only provides unprivileged docker containers, the labels
|
||||
in `config.yml` should be:
|
||||
`labels: ['docker:docker://node:20-bookworm']`.
|
||||
|
||||
If a runner provides LXC containers and unprivileged docker
|
||||
containers, the labels in `config.yml` should be
|
||||
`labels: ['self-hosted:lxc://debian:bookworm', 'docker:docker://node:20-bookworm']`.
|
||||
|
||||
```shell
|
||||
name=myrunner
|
||||
mkdir -p $DIR ; cd $DIR
|
||||
forgejo-runner generate-config > config-$name.yml
|
||||
## edit config-$name.yml and adjust the `labels:`
|
||||
## Obtain a $TOKEN from https://$DIR
|
||||
forgejo-runner-$version register --no-interactive --token $TOKEN --name runner --instance https://codeberg.org
|
||||
forgejo-runner-$version --config config-$name.yml daemon |& cat -v > runner.log &
|
||||
```
|
||||
|
||||
## Octopuce
|
||||
|
||||
[Octopuce provides hardware](https://codeberg.org/forgejo/sustainability) managed by [the devops team](https://codeberg.org/forgejo/governance/src/branch/main/TEAMS.md#devops). It can only be accessed via SSH.
|
||||
|
||||
To access the services hosted on the LXC containers, ssh port forwarding to the private IPs can be used. For instance:
|
||||
|
||||
```sh
|
||||
echo 127.0.0.1 private.forgejo.org >> /etc/hosts
|
||||
sudo ssh -i ~/.ssh/id_rsa -L 80:10.77.0.128:80 debian@forgejo01.octopuce.fr
|
||||
firefox http://private.forgejo.org
|
||||
```
|
||||
|
||||
### Containers
|
||||
|
||||
- `forgejo-host`
|
||||
|
||||
Dedicated to http://private.forgejo.org
|
||||
|
||||
- Docker enabled
|
||||
- upgrades checklist:
|
||||
```sh
|
||||
emacs /home/debian/run-forgejo.sh # change the `image=`
|
||||
docker stop forgejo
|
||||
sudo rsync -av --numeric-ids --delete --progress /srv/forgejo/ /root/forgejo-backup/
|
||||
docker rm forgejo
|
||||
bash -x /home/debian/run-forgejo.sh
|
||||
docker logs -n 200 -f forgejo
|
||||
```
|
||||
|
||||
- `forgejo-runner-host`
|
||||
|
||||
Has runners installed to run against private.forgejo.org
|
||||
|
||||
- Docker and LXC enabled 10.85.12 fc33
|
||||
|
||||
## Hetzner
|
||||
|
||||
All hardware machines are running Debian GNU/linux bookworm. They are LXC hosts
|
||||
setup with [lxc-helpers](https://code.forgejo.org/forgejo/lxc-helpers/).
|
||||
|
||||
> **NOTE:** only use [EX101 with a ASRockRack W680D4U-1L motherboard](https://forum.hetzner.com/index.php?thread/31135-all-ex101-with-asustek-w680-crash-on-sequential-read/).
|
||||
|
||||
### vSwitch
|
||||
|
||||
A vSwitch is assigned via the Robot console on all servers for backend communications
|
||||
and [configured](https://docs.hetzner.com/robot/dedicated-server/network/vswitch#example-debian-configuration)
|
||||
in /etc/network/interfaces for each of them with something like:
|
||||
|
||||
```
|
||||
auto enp5s0.4000
|
||||
iface enp5s0.4000 inet static
|
||||
address 10.53.100.2
|
||||
netmask 255.255.255.0
|
||||
vlan-raw-device enp5s0
|
||||
mtu 1400
|
||||
```
|
||||
|
||||
The IP address ends with the same number as the hardware (hetzner02 => .2).
|
||||
|
||||
#### vSwitch DRBD
|
||||
|
||||
The vSwitch on VLAN 4000 is for DRBD exclusively
|
||||
|
||||
#### vSwitch NFS
|
||||
|
||||
The vSwitch on VLAN 4001 is for NFS
|
||||
|
||||
#### vSwitch k8s
|
||||
|
||||
The vSwitch on VLAN 4002 is for the k8s control plane
|
||||
|
||||
### DRBD
|
||||
|
||||
DRBD is [configured](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#p-work) like in the following example with hetzner02 as the primary and hetzner03 as the secondary:
|
||||
|
||||
```sh
|
||||
$ apt-get install drbd-utils
|
||||
$ cat /etc/drbd.d/r0.res
|
||||
resource r0 {
|
||||
net {
|
||||
# A : write completion is determined when data is written to the local disk and the local TCP transmission buffer
|
||||
# B : write completion is determined when data is written to the local disk and remote buffer cache
|
||||
# C : write completion is determined when data is written to both the local disk and the remote disk
|
||||
protocol C;
|
||||
cram-hmac-alg sha1;
|
||||
# any secret key for authentication among nodes
|
||||
shared-secret "***";
|
||||
}
|
||||
disk {
|
||||
resync-rate 1000M;
|
||||
}
|
||||
on hetzner02 {
|
||||
address 10.53.100.2:7788;
|
||||
volume 0 {
|
||||
# device name
|
||||
device /dev/drbd0;
|
||||
# specify disk to be used for device above
|
||||
disk /dev/nvme0n1p5;
|
||||
# where to create metadata
|
||||
# specify the block device name when using a different disk
|
||||
meta-disk internal;
|
||||
}
|
||||
}
|
||||
on hetzner03 {
|
||||
address 10.53.100.3:7788;
|
||||
volume 0 {
|
||||
device /dev/drbd0;
|
||||
disk /dev/nvme1n1p5;
|
||||
meta-disk internal;
|
||||
}
|
||||
}
|
||||
}
|
||||
$ sudo drbdadm create-md r0
|
||||
$ sudo systemctl enable drbd
|
||||
$ sudo systemctl start drbd
|
||||
```
|
||||
|
||||
On hetzner02 (the primary), [pretend all is in sync](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#s-skip-initial-resync) to save the initial bitmap sync since
|
||||
there is actually no data at all.
|
||||
|
||||
```sh
|
||||
sudo drbdadm new-current-uuid --clear-bitmap r0/0
|
||||
```
|
||||
|
||||
The DRBD device is mounted on `/var/lib/lxc` in `/etc/fstab` there is a noauto line:
|
||||
|
||||
```
|
||||
/dev/drbd0 /var/lib/lxc ext4 noauto,defaults 0 0
|
||||
```
|
||||
|
||||
To prevent split brain situations a manual step is required at boot
|
||||
time, on the machine that is going to be the primary.
|
||||
|
||||
```sh
|
||||
sudo drbdadm primary r0
|
||||
sudo drbdsetup status
|
||||
sudo mount /var/lib/lxc
|
||||
sudo lxc-autostart start
|
||||
sudo lxc-ls -f
|
||||
sudo drbdsetup status
|
||||
```
|
||||
|
||||
### hetzner{01,04}
|
||||
## hetzner{01,04}
|
||||
|
||||
https://hetzner{01,04}.forgejo.org run on [EX101](https://www.hetzner.com/dedicated-rootserver/ex101) Hetzner hardware.
|
||||
|
||||
#### LXC
|
||||
### LXC
|
||||
|
||||
```sh
|
||||
lxc-helpers.sh lxc_install_lxc_inside 10.41.13 fc29
|
||||
```
|
||||
|
||||
#### Disk partitioning
|
||||
### Disk partitioning
|
||||
|
||||
- First disk
|
||||
- OS
|
||||
|
|
@ -495,14 +27,14 @@ lxc-helpers.sh lxc_install_lxc_inside 10.41.13 fc29
|
|||
- Second disk
|
||||
- configured with DRBD for precious data.
|
||||
|
||||
#### Root filesystem backups
|
||||
### Root filesystem backups
|
||||
|
||||
- `hetzner01:/etc/cron.daily/backup-hetzner04`
|
||||
`rsync -aHS --delete-excluded --delete --numeric-ids --exclude /proc --exclude /dev --exclude /sys --exclude /precious --exclude /srv --exclude /var/lib/lxc 10.53.100.4:/ /srv/backups/hetzner04/ >& /var/log/$(basename $0).log`
|
||||
- `hetzner04:/etc/cron.daily/backup-hetzner01`
|
||||
`rsync -aHS --delete-excluded --delete --numeric-ids --exclude /proc --exclude /dev --exclude /sys --exclude /precious --exclude /srv --exclude /var/lib/lxc 10.53.100.1:/ /srv/backups/hetzner01/ >& /var/log/$(basename $0).log`
|
||||
|
||||
#### LXC containers
|
||||
### LXC containers
|
||||
|
||||
- `runner-lxc-helpers` (hetzner01)
|
||||
|
||||
|
|
@ -588,17 +120,17 @@ lxc-helpers.sh lxc_install_lxc_inside 10.41.13 fc29
|
|||
|
||||
- Docker enabled
|
||||
|
||||
### hetzner{02,03}
|
||||
## hetzner{02,03}
|
||||
|
||||
https://hetzner02.forgejo.org & https://hetzner03.forgejo.org run on [EX44](https://www.hetzner.com/dedicated-rootserver/ex44) Hetzner hardware.
|
||||
|
||||
#### LXC
|
||||
### LXC
|
||||
|
||||
```sh
|
||||
lxc-helpers.sh lxc_install_lxc_inside 10.6.83 fc16
|
||||
```
|
||||
|
||||
#### Disk partitioning
|
||||
### Disk partitioning
|
||||
|
||||
- First disk
|
||||
- OS
|
||||
|
|
@ -606,14 +138,14 @@ lxc-helpers.sh lxc_install_lxc_inside 10.6.83 fc16
|
|||
- Second disk
|
||||
- non precious data such as the LXC containers with runners.
|
||||
|
||||
#### Root filesystem backups
|
||||
### Root filesystem backups
|
||||
|
||||
- `hetzner03:/etc/cron.daily/backup-hetzner02`
|
||||
`rsync -aHS --delete-excluded --delete --numeric-ids --exclude /proc --exclude /dev --exclude /sys --exclude /srv --exclude /var/lib/lxc 10.53.100.2:/ /srv/backups/hetzner02/`
|
||||
- `hetzner02:/etc/cron.daily/backup-hetzner03`
|
||||
`rsync -aHS --delete-excluded --delete --numeric-ids --exclude /proc --exclude /dev --exclude /sys --exclude /srv --exclude /var/lib/lxc 10.53.100.3:/ /srv/backups/hetzner03/`
|
||||
|
||||
#### Public IP addresses
|
||||
### Public IP addresses
|
||||
|
||||
The public IP addresses attached to the hosts are not failover IPs that can be moved from one host to the next.
|
||||
The DNS entry needs to be updated if the primary hosts changes.
|
||||
|
|
@ -653,7 +185,7 @@ ListenAddress 65.21.67.73
|
|||
#ListenAddress ::
|
||||
```
|
||||
|
||||
#### Port forwarding
|
||||
### Port forwarding
|
||||
|
||||
Forwarding a port to an LXC container can be done with [nginx streeam](https://nginx.org/en/docs/stream/ngx_stream_core_module.html) for the public IP of code.forgejo.org (65.21.67.71 & 2a01:4f9:3081:51ec::102) to the private IP (10.6.83.195) of the `code` LXC container in `/etc/nginx/modules-enabled/ssh.conf`:
|
||||
|
||||
|
|
@ -677,13 +209,13 @@ stream {
|
|||
}
|
||||
```
|
||||
|
||||
#### 302 redirects
|
||||
### 302 redirects
|
||||
|
||||
- On hetzner02
|
||||
- try.next.forgejo.org redirects to v(latest stable).next.forgejo.org
|
||||
- dev.next.forgejo.org redirects to v(latest dev).next.forgejo.org
|
||||
|
||||
#### Containers
|
||||
### Containers
|
||||
|
||||
- `forgejo-code` on hetzner02
|
||||
|
||||
|
|
@ -785,186 +317,11 @@ stream {
|
|||
|
||||
Dedicated to https://codeberg.org/forgejo-contrib/forgejo-helm and running from an ephemeral disk
|
||||
|
||||
### hetzner{05,06}
|
||||
## hetzner{05,06}
|
||||
|
||||
https://hetzner05.forgejo.org & https://hetzner06.forgejo.org run on [EX44](https://www.hetzner.com/dedicated-rootserver/ex44) Hetzner hardware.
|
||||
|
||||
|
||||
#### Imaging
|
||||
|
||||
Using installimage from the rescue instance.
|
||||
|
||||
- `wipefs -fa /dev/nvme*n1`
|
||||
- `installimage -r no -n hetzner0?`
|
||||
- Debian bookworm
|
||||
- `PART / ext4 100G`
|
||||
- `PART /srv ext4 all`
|
||||
- ESC 0 + yes
|
||||
- reboot
|
||||
|
||||
Partitioning.
|
||||
|
||||
- First disk
|
||||
- OS
|
||||
- non precious data such as the LXC containers with runners.
|
||||
- Second disk
|
||||
- a partition configured with DRBD
|
||||
|
||||
Debian user.
|
||||
|
||||
- `ssh root@hetzner0?.forgejo.org`
|
||||
- `useradd --shell /bin/bash --create-home --groups sudo debian`
|
||||
- `mkdir -p /home/debian/.ssh ; cp -a .ssh/authorized_keys /home/debian/.ssh ; chown -R debian /home/debian/.ssh`
|
||||
- in `/etc/sudoers` edit `%sudo ALL=(ALL:ALL) NOPASSWD:ALL`
|
||||
|
||||
#### Install helpers
|
||||
|
||||
Each node is identifed by the last digit of the hostname.
|
||||
|
||||
```sh
|
||||
sudo apt-get install git etckeeper
|
||||
git clone https://code.forgejo.org/infrastructure/documentation
|
||||
cd documentation/k3s-host
|
||||
cp variables.sh.example variables.sh
|
||||
cp secrets.sh.example secrets.sh
|
||||
```
|
||||
|
||||
Variables that must be set depending on the role of the node.
|
||||
|
||||
- first server node
|
||||
- secrets.sh: node_drbd_shared_secret
|
||||
- other server node
|
||||
- secrets.sh: node_drbd_shared_secret
|
||||
- secrets.sh: node_k8s_token: content of /var/lib/rancher/k3s/server/token on the first node
|
||||
- variables.sh: node_k8s_existing: identifier of the first node (e.g. 5)
|
||||
- etcd node
|
||||
- secrets.sh: node_k8s_token: content of /var/lib/rancher/k3s/server/token on the first node
|
||||
- variables.sh: node_k8s_existing: identifier of the first node (e.g. 5)
|
||||
- variables.sh: node_k8s_etcd: identifier of the node whose role is just etcd (e.g. 3)
|
||||
|
||||
The other variables depend on the setup.
|
||||
|
||||
#### Firewall
|
||||
|
||||
`./setup.sh setup_ufw`
|
||||
|
||||
#### DRBD
|
||||
|
||||
DRBD is [configured](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#p-work) with:
|
||||
|
||||
`./setup.sh setup_drbd`
|
||||
|
||||
Once two nodes have DRBD setup for the first time, it can be initialized by [pretending all is in sync](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#s-skip-initial-resync) to save the initial bitmap sync since there is actually no data at all.
|
||||
|
||||
|
||||
```sh
|
||||
sudo drbdadm primary r1
|
||||
sudo drbdadm new-current-uuid --clear-bitmap r1/0
|
||||
sudo mount /precious
|
||||
```
|
||||
|
||||
#### NFS
|
||||
|
||||
`./setup.sh setup_nfs`
|
||||
|
||||
On the node that has the DRBD volume `/precious` mounted, set the IP of the NFS server to be used by k8s:
|
||||
|
||||
```sh
|
||||
sudo ip addr add 10.53.101.100/24 dev enp5s0.4001
|
||||
```
|
||||
|
||||
#### K8S
|
||||
|
||||
For the first node `./setup.sh setup_k8s`. For nodes joining the cluster `./setup.sh setup_k8s 6` where `hetzner06` is an existing node.
|
||||
|
||||
- [metallb](https://metallb.universe.tf) instead of the default load balancer because it does not allow for a public IP different from the `k8s` node IP.
|
||||
`./setup.sh setup_k8s_metallb`
|
||||
- [traefik](https://traefik.io/) requests with [annotations](https://github.com/traefik/traefik-helm-chart/blob/7a13fc8a61a6ad30fcec32eec497dab9d8aea686/traefik/values.yaml#L736) specific IPs from `metalldb`.
|
||||
`./setup.sh setup_k8s_traefik`
|
||||
- [cert-manager](https://cert-manager.io/).
|
||||
`./setup.sh setup_k8s_certmanager`
|
||||
- NFS storage class
|
||||
`./setup.sh setup_k8s_nfs`
|
||||
|
||||
#### Forgejo
|
||||
|
||||
[forgejo](https://code.forgejo.org/forgejo-helm/forgejo-helm) configuration in [ingress](https://code.forgejo.org/forgejo-helm/forgejo-helm#ingress) for the reverse proxy (`traefik`) to route the domain and for the ACME issuer (`cert-manager`) to obtain a certificate. And in [service](https://code.forgejo.org/forgejo-helm/forgejo-helm#service) for the `ssh` port to be bound to the desired IPs of the load balancer (`metallb`).
|
||||
|
||||
```
|
||||
ingress:
|
||||
enabled: true
|
||||
annotations:
|
||||
# https://cert-manager.io/docs/usage/ingress/#supported-annotations
|
||||
# https://github.com/cert-manager/cert-manager/issues/2239
|
||||
cert-manager.io/cluster-issuer: letsencrypt-http
|
||||
cert-manager.io/private-key-algorithm: ECDSA
|
||||
cert-manager.io/private-key-size: 384
|
||||
kubernetes.io/ingress.class: traefik
|
||||
traefik.ingress.kubernetes.io/router.entrypoints: websecure
|
||||
tls:
|
||||
- hosts:
|
||||
- t1.forgejo.org
|
||||
secretName: tls-forgejo-t1-ingress-http
|
||||
hosts:
|
||||
- host: t1.forgejo.org
|
||||
paths:
|
||||
- path: /
|
||||
pathType: Prefix
|
||||
|
||||
service:
|
||||
http:
|
||||
type: ClusterIP
|
||||
ipFamilyPolicy: PreferDualStack
|
||||
port: 3000
|
||||
ssh:
|
||||
type: LoadBalancer
|
||||
annotations:
|
||||
metallb.universe.tf/loadBalancerIPs: 188.40.16.47,2a01:4f8:fff2:48::2
|
||||
metallb.universe.tf/allow-shared-ip: "key-to-share-failover"
|
||||
ipFamilyPolicy: PreferDualStack
|
||||
port: 2222
|
||||
```
|
||||
|
||||
### K8S NFS storage creation
|
||||
|
||||
Define the 20GB `forgejo-data` pvc owned by user id 1000.
|
||||
|
||||
```sh
|
||||
./setup.sh setup_k8s_pvc forgejo-data 20Gi 1000
|
||||
```
|
||||
|
||||
[Instruct the forgejo pod](https://code.forgejo.org/forgejo-helm/forgejo-helm#persistence) to use the `forgejo-data` pvc.
|
||||
|
||||
```yaml
|
||||
persistence:
|
||||
enabled: true
|
||||
create: false
|
||||
claimName: forgejo-data
|
||||
```
|
||||
|
||||
## Disaster recovery and maintenance
|
||||
|
||||
### When a machine or disk is scheduled for replacement.
|
||||
|
||||
* `kubectl drain hetzner05` # evacuate all the pods out of the node to be shutdown
|
||||
* `kubectl taint nodes hetzner05 key1=value1:NoSchedule` # prevent any pod from being created there (metallb speaker won't be drained, for instance)
|
||||
* `kubectl delete node hetzner05` # let the cluster know it no longer exists so a new one by the same name can replace it
|
||||
|
||||
### Routing the failover IP
|
||||
|
||||
When the machine to which the failover IP (failover.forgejo.org) is routed is unavailable or to be shutdown, to the [Hetzner server panel](https://robot.hetzner.com/server), to the IPs tab and change the route of the failover IP to another node. All nodes are configured with the failover IP, there is nothing else to do.
|
||||
|
||||
### Manual boot operations
|
||||
|
||||
#### On the machine that runs the NFS server
|
||||
|
||||
* `sudo drbdadm primary r1` # Switch the DRBD to primary
|
||||
* `sudo mount /precious` # DRBD volume shared via NFS
|
||||
* `sudo ip addr add 10.53.101.100/24 dev enp5s0.4001` # add NFS server IP
|
||||
|
||||
#### On the other machines
|
||||
|
||||
* `sudo ip addr del 10.53.101.100/24 dev enp5s0.4001` # remove NFS server IP
|
||||
Nodes of [a k8s cluster](k8s.md).
|
||||
|
||||
## Uberspace
|
||||
|
||||
|
|
|
|||
177
drbd-nginx-lxc.md
Normal file
177
drbd-nginx-lxc.md
Normal file
|
|
@ -0,0 +1,177 @@
|
|||
## nftables
|
||||
|
||||
```sh
|
||||
sudo nft list ruleset
|
||||
```
|
||||
|
||||
## Host reverse proxy
|
||||
|
||||
The reverse proxy on a host forwards to the designated LXC container with
|
||||
something like the following examples in
|
||||
`/etc/nginx/sites-available/example.com`, where A.B.C.D is the
|
||||
IP allocated to the LXC container running the web service.
|
||||
|
||||
And symlink:
|
||||
|
||||
```sh
|
||||
ln -s /etc/nginx/sites-available/example.com /etc/nginx/sites-enabled/example.com
|
||||
```
|
||||
|
||||
The certificate is obtained once and automatically renewed with:
|
||||
|
||||
```
|
||||
sudo apt-get install certbot python3-certbot-nginx
|
||||
sudo certbot -n --agree-tos --email contact@forgejo.org -d example.com --nginx
|
||||
```
|
||||
|
||||
When removing a configuration, the certificate can also be removed with:
|
||||
|
||||
```
|
||||
sudo certbot delete --cert-name example.com
|
||||
```
|
||||
|
||||
Forwarding TCP streams (useful for ssh) requires installing the module:
|
||||
|
||||
```sh
|
||||
sudo apt-get install libnginx-mod-stream
|
||||
```
|
||||
|
||||
Rate limiting crawlers is done by adding the following to `/etc/nginx/conf.d/limit.conf`:
|
||||
|
||||
```
|
||||
# http://nginx.org/en/docs/http/ngx_http_limit_req_module.html
|
||||
# https://blog.nginx.org/blog/rate-limiting-nginx
|
||||
map $http_user_agent $isbot_ua {
|
||||
default 0;
|
||||
~*(GoogleBot|GoogleOther|bingbot|YandexBot) 1;
|
||||
}
|
||||
map $isbot_ua $limit_bot {
|
||||
0 "";
|
||||
1 $binary_remote_addr;
|
||||
}
|
||||
limit_req_zone $limit_bot zone=bots:10m rate=1r/m;
|
||||
limit_req_status 429;
|
||||
```
|
||||
|
||||
and the following in the location to be rate limited:
|
||||
|
||||
```
|
||||
location / {
|
||||
limit_req zone=bots burst=2 nodelay;
|
||||
...
|
||||
```
|
||||
|
||||
## Host wakeup-on-logs
|
||||
|
||||
https://code.forgejo.org/infrastructure/wakeup-on-logs
|
||||
|
||||
### K8S wakeup-on-logs script
|
||||
|
||||
```
|
||||
$ cat /etc/wakeup-on-logs/forgejo-v8
|
||||
#!/bin/bash
|
||||
|
||||
set -x
|
||||
|
||||
self="${BASH_SOURCE[0]}"
|
||||
name=$(basename $self)
|
||||
# keep it lower than https://code.forgejo.org/infrastructure/wakeup-on-logs
|
||||
# otherwise it will get killed by it
|
||||
timeout=4m
|
||||
|
||||
function lxc_run() {
|
||||
lxc-attach $name -- sudo --user debian KUBECONFIG=/etc/rancher/k3s/k3s.yaml "$@" |& tee -a /var/log/$name.log
|
||||
}
|
||||
|
||||
image=codeberg.org/forgejo-experimental/forgejo
|
||||
major=${name##*v}
|
||||
digest=$(skopeo inspect --format "{{.Digest}}" docker://$image:$major-rootless)
|
||||
values=https://code.forgejo.org/infrastructure/k8s/raw/branch/main/forgejo-v$major/values.yml
|
||||
lxc_run helm upgrade forgejo -f $values -f /home/debian/secrets.yml oci://code.forgejo.org/forgejo-helm/forgejo --atomic --wait --timeout $timeout --install --set image.digest=$digest
|
||||
```
|
||||
|
||||
### Forgejo example
|
||||
|
||||
```
|
||||
server {
|
||||
listen 80;
|
||||
listen [::]:80;
|
||||
|
||||
server_name example.com;
|
||||
|
||||
location / {
|
||||
proxy_pass http://A.B.C.D:8080;
|
||||
proxy_set_header Host $host;
|
||||
proxy_set_header X-Real-IP $remote_addr;
|
||||
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
|
||||
proxy_set_header X-Forwarded-Proto https;
|
||||
client_max_body_size 2G;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### GitLab example
|
||||
|
||||
```nginx
|
||||
server {
|
||||
listen 80;
|
||||
listen [::]:80;
|
||||
|
||||
server_name example.com;
|
||||
|
||||
location / {
|
||||
proxy_set_header Upgrade $http_upgrade;
|
||||
proxy_set_header Connection "upgrade";
|
||||
proxy_set_header Host $http_host;
|
||||
proxy_set_header X-Real-IP $remote_addr;
|
||||
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
|
||||
proxy_set_header X-Forwarded-Proto $scheme;
|
||||
proxy_set_header X-Frame-Options SAMEORIGIN;
|
||||
|
||||
client_body_timeout 60;
|
||||
client_max_body_size 200M;
|
||||
send_timeout 1200;
|
||||
lingering_timeout 5;
|
||||
|
||||
proxy_buffering off;
|
||||
proxy_connect_timeout 90;
|
||||
proxy_send_timeout 300;
|
||||
proxy_read_timeout 600s;
|
||||
|
||||
proxy_pass http://example.com;
|
||||
proxy_http_version 1.1;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Vanila example
|
||||
|
||||
```nginx
|
||||
server {
|
||||
listen 80;
|
||||
listen [::]:80;
|
||||
|
||||
server_name example.com;
|
||||
|
||||
location / {
|
||||
proxy_pass http://A.B.C.D;
|
||||
proxy_set_header Host $host;
|
||||
proxy_set_header X-Real-IP $remote_addr;
|
||||
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
|
||||
proxy_set_header X-Forwarded-Proto https;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### 302 redirection
|
||||
|
||||
```nginx
|
||||
server {
|
||||
listen 80;
|
||||
listen [::]:80;
|
||||
|
||||
server_name example.com;
|
||||
return 302 https://other.example.com$request_uri;
|
||||
}
|
||||
```
|
||||
|
||||
176
k8s.md
Normal file
176
k8s.md
Normal file
|
|
@ -0,0 +1,176 @@
|
|||
#### Imaging
|
||||
|
||||
Using installimage from the rescue instance.
|
||||
|
||||
- `wipefs -fa /dev/nvme*n1`
|
||||
- `installimage -r no -n hetzner0?`
|
||||
- Debian bookworm
|
||||
- `PART / ext4 100G`
|
||||
- `PART /srv ext4 all`
|
||||
- ESC 0 + yes
|
||||
- reboot
|
||||
|
||||
Partitioning.
|
||||
|
||||
- First disk
|
||||
- OS
|
||||
- non precious data such as the LXC containers with runners.
|
||||
- Second disk
|
||||
- a partition configured with DRBD
|
||||
|
||||
Debian user.
|
||||
|
||||
- `ssh root@hetzner0?.forgejo.org`
|
||||
- `useradd --shell /bin/bash --create-home --groups sudo debian`
|
||||
- `mkdir -p /home/debian/.ssh ; cp -a .ssh/authorized_keys /home/debian/.ssh ; chown -R debian /home/debian/.ssh`
|
||||
- in `/etc/sudoers` edit `%sudo ALL=(ALL:ALL) NOPASSWD:ALL`
|
||||
|
||||
#### Install helpers
|
||||
|
||||
Each node is identifed by the last digit of the hostname.
|
||||
|
||||
```sh
|
||||
sudo apt-get install git etckeeper
|
||||
git clone https://code.forgejo.org/infrastructure/documentation
|
||||
cd documentation/k3s-host
|
||||
cp variables.sh.example variables.sh
|
||||
cp secrets.sh.example secrets.sh
|
||||
```
|
||||
|
||||
Variables that must be set depending on the role of the node.
|
||||
|
||||
- first server node
|
||||
- secrets.sh: node_drbd_shared_secret
|
||||
- other server node
|
||||
- secrets.sh: node_drbd_shared_secret
|
||||
- secrets.sh: node_k8s_token: content of /var/lib/rancher/k3s/server/token on the first node
|
||||
- variables.sh: node_k8s_existing: identifier of the first node (e.g. 5)
|
||||
- etcd node
|
||||
- secrets.sh: node_k8s_token: content of /var/lib/rancher/k3s/server/token on the first node
|
||||
- variables.sh: node_k8s_existing: identifier of the first node (e.g. 5)
|
||||
- variables.sh: node_k8s_etcd: identifier of the node whose role is just etcd (e.g. 3)
|
||||
|
||||
The other variables depend on the setup.
|
||||
|
||||
#### Firewall
|
||||
|
||||
`./setup.sh setup_ufw`
|
||||
|
||||
#### DRBD
|
||||
|
||||
DRBD is [configured](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#p-work) with:
|
||||
|
||||
`./setup.sh setup_drbd`
|
||||
|
||||
Once two nodes have DRBD setup for the first time, it can be initialized by [pretending all is in sync](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#s-skip-initial-resync) to save the initial bitmap sync since there is actually no data at all.
|
||||
|
||||
|
||||
```sh
|
||||
sudo drbdadm primary r1
|
||||
sudo drbdadm new-current-uuid --clear-bitmap r1/0
|
||||
sudo mount /precious
|
||||
```
|
||||
|
||||
#### NFS
|
||||
|
||||
`./setup.sh setup_nfs`
|
||||
|
||||
On the node that has the DRBD volume `/precious` mounted, set the IP of the NFS server to be used by k8s:
|
||||
|
||||
```sh
|
||||
sudo ip addr add 10.53.101.100/24 dev enp5s0.4001
|
||||
```
|
||||
|
||||
#### K8S
|
||||
|
||||
For the first node `./setup.sh setup_k8s`. For nodes joining the cluster `./setup.sh setup_k8s 6` where `hetzner06` is an existing node.
|
||||
|
||||
- [metallb](https://metallb.universe.tf) instead of the default load balancer because it does not allow for a public IP different from the `k8s` node IP.
|
||||
`./setup.sh setup_k8s_metallb`
|
||||
- [traefik](https://traefik.io/) requests with [annotations](https://github.com/traefik/traefik-helm-chart/blob/7a13fc8a61a6ad30fcec32eec497dab9d8aea686/traefik/values.yaml#L736) specific IPs from `metalldb`.
|
||||
`./setup.sh setup_k8s_traefik`
|
||||
- [cert-manager](https://cert-manager.io/).
|
||||
`./setup.sh setup_k8s_certmanager`
|
||||
- NFS storage class
|
||||
`./setup.sh setup_k8s_nfs`
|
||||
|
||||
#### Forgejo
|
||||
|
||||
[forgejo](https://code.forgejo.org/forgejo-helm/forgejo-helm) configuration in [ingress](https://code.forgejo.org/forgejo-helm/forgejo-helm#ingress) for the reverse proxy (`traefik`) to route the domain and for the ACME issuer (`cert-manager`) to obtain a certificate. And in [service](https://code.forgejo.org/forgejo-helm/forgejo-helm#service) for the `ssh` port to be bound to the desired IPs of the load balancer (`metallb`).
|
||||
|
||||
```
|
||||
ingress:
|
||||
enabled: true
|
||||
annotations:
|
||||
# https://cert-manager.io/docs/usage/ingress/#supported-annotations
|
||||
# https://github.com/cert-manager/cert-manager/issues/2239
|
||||
cert-manager.io/cluster-issuer: letsencrypt-http
|
||||
cert-manager.io/private-key-algorithm: ECDSA
|
||||
cert-manager.io/private-key-size: 384
|
||||
kubernetes.io/ingress.class: traefik
|
||||
traefik.ingress.kubernetes.io/router.entrypoints: websecure
|
||||
tls:
|
||||
- hosts:
|
||||
- t1.forgejo.org
|
||||
secretName: tls-forgejo-t1-ingress-http
|
||||
hosts:
|
||||
- host: t1.forgejo.org
|
||||
paths:
|
||||
- path: /
|
||||
pathType: Prefix
|
||||
|
||||
service:
|
||||
http:
|
||||
type: ClusterIP
|
||||
ipFamilyPolicy: PreferDualStack
|
||||
port: 3000
|
||||
ssh:
|
||||
type: LoadBalancer
|
||||
annotations:
|
||||
metallb.universe.tf/loadBalancerIPs: 188.40.16.47,2a01:4f8:fff2:48::2
|
||||
metallb.universe.tf/allow-shared-ip: "key-to-share-failover"
|
||||
ipFamilyPolicy: PreferDualStack
|
||||
port: 2222
|
||||
```
|
||||
|
||||
### K8S NFS storage creation
|
||||
|
||||
Define the 20GB `forgejo-data` pvc owned by user id 1000.
|
||||
|
||||
```sh
|
||||
./setup.sh setup_k8s_pvc forgejo-data 20Gi 1000
|
||||
```
|
||||
|
||||
[Instruct the forgejo pod](https://code.forgejo.org/forgejo-helm/forgejo-helm#persistence) to use the `forgejo-data` pvc.
|
||||
|
||||
```yaml
|
||||
persistence:
|
||||
enabled: true
|
||||
create: false
|
||||
claimName: forgejo-data
|
||||
```
|
||||
|
||||
## Disaster recovery and maintenance
|
||||
|
||||
### When a machine or disk is scheduled for replacement.
|
||||
|
||||
* `kubectl drain hetzner05` # evacuate all the pods out of the node to be shutdown
|
||||
* `kubectl taint nodes hetzner05 key1=value1:NoSchedule` # prevent any pod from being created there (metallb speaker won't be drained, for instance)
|
||||
* `kubectl delete node hetzner05` # let the cluster know it no longer exists so a new one by the same name can replace it
|
||||
|
||||
### Routing the failover IP
|
||||
|
||||
When the machine to which the failover IP (failover.forgejo.org) is routed is unavailable or to be shutdown, to the [Hetzner server panel](https://robot.hetzner.com/server), to the IPs tab and change the route of the failover IP to another node. All nodes are configured with the failover IP, there is nothing else to do.
|
||||
|
||||
### Manual boot operations
|
||||
|
||||
#### On the machine that runs the NFS server
|
||||
|
||||
* `sudo drbdadm primary r1` # Switch the DRBD to primary
|
||||
* `sudo mount /precious` # DRBD volume shared via NFS
|
||||
* `sudo ip addr add 10.53.101.100/24 dev enp5s0.4001` # add NFS server IP
|
||||
|
||||
#### On the other machines
|
||||
|
||||
* `sudo ip addr del 10.53.101.100/24 dev enp5s0.4001` # remove NFS server IP
|
||||
|
||||
160
lxc.md
Normal file
160
lxc.md
Normal file
|
|
@ -0,0 +1,160 @@
|
|||
## LXC Hosts
|
||||
|
||||
All LXC hosts are setup with [lxc-helpers](https://code.forgejo.org/forgejo/lxc-helpers/).
|
||||
|
||||
```sh
|
||||
name=forgejo-host
|
||||
lxc-helpers.sh lxc_container_run $name -- sudo --user debian bash
|
||||
```
|
||||
|
||||
See https://github.com/mikesart/inotify-info. Running multiple LXC
|
||||
containers will quickly use the default limit (128 on bookworm).
|
||||
|
||||
```sh
|
||||
echo fs.inotify.max_user_instances=8192 | sudo tee -a /etc/sysctl.conf
|
||||
sudo sysctl -p
|
||||
```
|
||||
|
||||
### Unprivileged
|
||||
|
||||
```sh
|
||||
name=forgejo-host
|
||||
lxc-helpers.sh lxc_container_create --config "unprivileged" $name
|
||||
echo "lxc.start.auto = 1" | sudo tee -a /var/lib/lxc/$name/config
|
||||
lxc-helpers.sh lxc_container_start $name
|
||||
lxc-helpers.sh lxc_container_user_install $name $(id -u) $USER
|
||||
```
|
||||
|
||||
### Docker enabled
|
||||
|
||||
```sh
|
||||
name=forgejo-host
|
||||
lxc-helpers.sh lxc_container_create --config "docker" $name
|
||||
echo "lxc.start.auto = 1" | sudo tee -a /var/lib/lxc/$name/config
|
||||
lxc-helpers.sh lxc_container_start $name
|
||||
lxc-helpers.sh lxc_install_docker $name
|
||||
lxc-helpers.sh lxc_container_user_install $name $(id -u) $USER
|
||||
```
|
||||
|
||||
### K8S enabled
|
||||
|
||||
```sh
|
||||
name=forgejo-host
|
||||
lxc-helpers.sh lxc_container_create --config "k8s" $name
|
||||
echo "lxc.start.auto = 1" | sudo tee -a /var/lib/lxc/$name/config
|
||||
lxc-helpers.sh lxc_container_start $name
|
||||
lxc-helpers.sh lxc_container_user_install $name $(id -u) $USER
|
||||
```
|
||||
|
||||
### Docker and LXC enabled
|
||||
|
||||
```sh
|
||||
name=forgejo-host
|
||||
ipv4=10.85.12
|
||||
ipv6=fc33
|
||||
lxc-helpers.sh lxc_container_create --config "docker lxc" $name
|
||||
echo "lxc.start.auto = 1" | sudo tee -a /var/lib/lxc/$name/config
|
||||
lxc-helpers.sh lxc_container_start $name
|
||||
lxc-helpers.sh lxc_install_docker $name
|
||||
lxc-helpers.sh lxc_install_lxc $name $ipv4 $ipv6
|
||||
lxc-helpers.sh lxc_container_user_install $name $(id -u) $USER
|
||||
```
|
||||
|
||||
## Hetzner
|
||||
|
||||
All hardware machines are running Debian GNU/linux bookworm. They are LXC hosts
|
||||
setup with [lxc-helpers](https://code.forgejo.org/forgejo/lxc-helpers/).
|
||||
|
||||
> **NOTE:** only use [EX101 with a ASRockRack W680D4U-1L motherboard](https://forum.hetzner.com/index.php?thread/31135-all-ex101-with-asustek-w680-crash-on-sequential-read/).
|
||||
|
||||
### vSwitch
|
||||
|
||||
A vSwitch is assigned via the Robot console on all servers for backend communications
|
||||
and [configured](https://docs.hetzner.com/robot/dedicated-server/network/vswitch#example-debian-configuration)
|
||||
in /etc/network/interfaces for each of them with something like:
|
||||
|
||||
```
|
||||
auto enp5s0.4000
|
||||
iface enp5s0.4000 inet static
|
||||
address 10.53.100.2
|
||||
netmask 255.255.255.0
|
||||
vlan-raw-device enp5s0
|
||||
mtu 1400
|
||||
```
|
||||
|
||||
The IP address ends with the same number as the hardware (hetzner02 => .2).
|
||||
|
||||
#### vSwitch DRBD
|
||||
|
||||
The vSwitch on VLAN 4000 is for DRBD exclusively
|
||||
|
||||
### DRBD
|
||||
|
||||
DRBD is [configured](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#p-work) like in the following example with hetzner02 as the primary and hetzner03 as the secondary:
|
||||
|
||||
```sh
|
||||
$ apt-get install drbd-utils
|
||||
$ cat /etc/drbd.d/r0.res
|
||||
resource r0 {
|
||||
net {
|
||||
# A : write completion is determined when data is written to the local disk and the local TCP transmission buffer
|
||||
# B : write completion is determined when data is written to the local disk and remote buffer cache
|
||||
# C : write completion is determined when data is written to both the local disk and the remote disk
|
||||
protocol C;
|
||||
cram-hmac-alg sha1;
|
||||
# any secret key for authentication among nodes
|
||||
shared-secret "***";
|
||||
}
|
||||
disk {
|
||||
resync-rate 1000M;
|
||||
}
|
||||
on hetzner02 {
|
||||
address 10.53.100.2:7788;
|
||||
volume 0 {
|
||||
# device name
|
||||
device /dev/drbd0;
|
||||
# specify disk to be used for device above
|
||||
disk /dev/nvme0n1p5;
|
||||
# where to create metadata
|
||||
# specify the block device name when using a different disk
|
||||
meta-disk internal;
|
||||
}
|
||||
}
|
||||
on hetzner03 {
|
||||
address 10.53.100.3:7788;
|
||||
volume 0 {
|
||||
device /dev/drbd0;
|
||||
disk /dev/nvme1n1p5;
|
||||
meta-disk internal;
|
||||
}
|
||||
}
|
||||
}
|
||||
$ sudo drbdadm create-md r0
|
||||
$ sudo systemctl enable drbd
|
||||
$ sudo systemctl start drbd
|
||||
```
|
||||
|
||||
On hetzner02 (the primary), [pretend all is in sync](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#s-skip-initial-resync) to save the initial bitmap sync since
|
||||
there is actually no data at all.
|
||||
|
||||
```sh
|
||||
sudo drbdadm new-current-uuid --clear-bitmap r0/0
|
||||
```
|
||||
|
||||
The DRBD device is mounted on `/var/lib/lxc` in `/etc/fstab` there is a noauto line:
|
||||
|
||||
```
|
||||
/dev/drbd0 /var/lib/lxc ext4 noauto,defaults 0 0
|
||||
```
|
||||
|
||||
To prevent split brain situations a manual step is required at boot
|
||||
time, on the machine that is going to be the primary.
|
||||
|
||||
```sh
|
||||
sudo drbdadm primary r0
|
||||
sudo drbdsetup status
|
||||
sudo mount /var/lib/lxc
|
||||
sudo lxc-autostart start
|
||||
sudo lxc-ls -f
|
||||
sudo drbdsetup status
|
||||
```
|
||||
35
octopuce.md
Normal file
35
octopuce.md
Normal file
|
|
@ -0,0 +1,35 @@
|
|||
## Octopuce
|
||||
|
||||
[Octopuce provides hardware](https://codeberg.org/forgejo/sustainability) managed by [the devops team](https://codeberg.org/forgejo/governance/src/branch/main/TEAMS.md#devops). It can only be accessed via SSH.
|
||||
|
||||
To access the services hosted on the LXC containers, ssh port forwarding to the private IPs can be used. For instance:
|
||||
|
||||
```sh
|
||||
echo 127.0.0.1 private.forgejo.org >> /etc/hosts
|
||||
sudo ssh -i ~/.ssh/id_rsa -L 80:10.77.0.128:80 debian@forgejo01.octopuce.fr
|
||||
firefox http://private.forgejo.org
|
||||
```
|
||||
|
||||
### Containers
|
||||
|
||||
- `forgejo-host`
|
||||
|
||||
Dedicated to http://private.forgejo.org
|
||||
|
||||
- Docker enabled
|
||||
- upgrades checklist:
|
||||
```sh
|
||||
emacs /home/debian/run-forgejo.sh # change the `image=`
|
||||
docker stop forgejo
|
||||
sudo rsync -av --numeric-ids --delete --progress /srv/forgejo/ /root/forgejo-backup/
|
||||
docker rm forgejo
|
||||
bash -x /home/debian/run-forgejo.sh
|
||||
docker logs -n 200 -f forgejo
|
||||
```
|
||||
|
||||
- `forgejo-runner-host`
|
||||
|
||||
Has runners installed to run against private.forgejo.org
|
||||
|
||||
- Docker and LXC enabled 10.85.12 fc33
|
||||
|
||||
44
runner-lxc.md
Normal file
44
runner-lxc.md
Normal file
|
|
@ -0,0 +1,44 @@
|
|||
## Forgejo runners
|
||||
|
||||
The LXC container in which the runner is installed must have capabilities that support the backend.
|
||||
|
||||
- docker:// needs a Docker enabled container
|
||||
- lxc:// needs a Docker and LXC enabled container
|
||||
|
||||
The runners it contains are not started at boot, it must be done manually. The bash history has the command line to do so.
|
||||
|
||||
### Installation
|
||||
|
||||
```shell
|
||||
version=3.5.0
|
||||
sudo wget -O /usr/local/bin/forgejo-runner-$version https://code.forgejo.org/forgejo/runner/releases/download/v$version/forgejo-runner-$version-linux-amd64
|
||||
sudo chmod +x /usr/local/bin/forgejo-runner-$version
|
||||
echo 'export TERM=xterm-256color' >> .bashrc
|
||||
```
|
||||
|
||||
### Creating a runner
|
||||
|
||||
Multiple runners can co-exist on the same machine. To keep things
|
||||
organized they are located in a directory that is the same as the URL
|
||||
from which the token is obtained. For instance
|
||||
DIR=codeberg.org/forgejo-integration means that the token was obtained from the
|
||||
https://codeberg.org/forgejo-integration organization.
|
||||
|
||||
If a runner only provides unprivileged docker containers, the labels
|
||||
in `config.yml` should be:
|
||||
`labels: ['docker:docker://node:20-bookworm']`.
|
||||
|
||||
If a runner provides LXC containers and unprivileged docker
|
||||
containers, the labels in `config.yml` should be
|
||||
`labels: ['self-hosted:lxc://debian:bookworm', 'docker:docker://node:20-bookworm']`.
|
||||
|
||||
```shell
|
||||
name=myrunner
|
||||
mkdir -p $DIR ; cd $DIR
|
||||
forgejo-runner generate-config > config-$name.yml
|
||||
## edit config-$name.yml and adjust the `labels:`
|
||||
## Obtain a $TOKEN from https://$DIR
|
||||
forgejo-runner-$version register --no-interactive --token $TOKEN --name runner --instance https://codeberg.org
|
||||
forgejo-runner-$version --config config-$name.yml daemon |& cat -v > runner.log &
|
||||
```
|
||||
|
||||
Loading…
Reference in a new issue