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install a Forgejo instance in the k8s cluster

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Earl Warren 2024-10-20 11:36:57 +02:00
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1
README.md
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@ -6,6 +6,7 @@ There is a [dedicated chatroom](https://matrix.to/#/#forgejo-ci:matrix.org). A m
- Setting up a new [K8S/DRBD/NFS k8s node](k8s.md)
- Setting up a new [LXC/DRBD Host](lxc.md)
- Managing services with a [LXC/DRBD/nginx stack](drbd-nginx-lxc.md)
- Installing a [Forgejo instance in the K8S cluster](k8s-forgejo.md)
- Installing a [Forgejo runner in an LXC container](runner-lxc.md)
- Managing the [Octopuce host](octopuce.md)

48
k8s-forgejo.md Normal file
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@ -0,0 +1,48 @@
## 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
```
[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
```

62
k8s.md
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@ -98,46 +98,7 @@ For the first node `./setup.sh setup_k8s`. For nodes joining the cluster `./setu
- 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
## K8S NFS storage creation
Define the 20GB `forgejo-data` pvc owned by user id 1000.
@ -145,35 +106,26 @@ Define the 20GB `forgejo-data` pvc owned by user id 1000.
./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.
# Disaster recovery and maintenance
```yaml
persistence:
enabled: true
create: false
claimName: forgejo-data
```
Disaster recovery and maintenance
# When a machine or disk is scheduled for replacement.
## 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
## 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
## Manual boot operations
## On the machine that runs the NFS server
### 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
### On the other machines
* `sudo ip addr del 10.53.101.100/24 dev enp5s0.4001` # remove NFS server IP