mirror of
https://code.forgejo.org/infrastructure/documentation
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24 lines
1.1 KiB
Markdown
24 lines
1.1 KiB
Markdown
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# Disaster recovery and maintenance
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## When a machine or disk is scheduled for replacement.
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* `kubectl drain hetzner05` # evacuate all the pods out of the node to be shutdown
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* `kubectl taint nodes hetzner05 key1=value1:NoSchedule` # prevent any pod from being created there (metallb speaker won't be drained, for instance)
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* `kubectl delete node hetzner05` # let the cluster know it no longer exists so a new one by the same name can replace it
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## Routing the failover IP
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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.
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## Manual boot operations
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### On the machine that runs the NFS server
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* `sudo drbdadm primary r1` # Switch the DRBD to primary
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* `sudo mount /precious` # DRBD volume shared via NFS
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* `sudo ip addr add 10.53.101.100/24 dev enp5s0.4001` # add NFS server IP
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### On the other machines
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* `sudo ip addr del 10.53.101.100/24 dev enp5s0.4001` # remove NFS server IP
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