RKE2 v1.31.4 (RPM installed) RHEL 9.4 We ran into ...
# rke2
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RKE2 v1.31.4 (RPM installed) RHEL 9.4 We ran into an issue with etcd DB size reached 2GB and it resulted in NOSPACE errors Saw in one of the docs
RKE2 automatically compacts etcd every five minutes, and defragments it when it starts up.
From this doc: https://gist.github.com/superseb/3b78f47989e0dbc1295486c186e944bf Looked at output of this command:
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for etcdpod in $(kubectl -n kube-system get pod -l component=etcd --no-headers -o custom-columns=NAME:.metadata.name); do kubectl -n kube-system exec $etcdpod -- etcdctl --cert /var/lib/rancher/rke2/server/tls/etcd/server-client.crt --key /var/lib/rancher/rke2/server/tls/etcd/server-client.key --cacert /var/lib/rancher/rke2/server/tls/etcd/server-ca.crt endpoint status -w json; done
"dbSize":2038177792, and "dbSizeInUse":65404928  (2GB and ~60MB)
So, manually did defrag
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kubectl -n kube-system exec $(kubectl -n kube-system get pod -l component=etcd --no-headers -o custom-columns=NAME:.metadata.name | head -1) -- etcdctl --cert /var/lib/rancher/rke2/server/tls/etcd/server-client.crt --key /var/lib/rancher/rke2/server/tls/etcd/server-client.key --cacert /var/lib/rancher/rke2/server/tls/etcd/server-ca.crt defrag --cluster
and now dbSize is down to ~60MB My question is; is it good idea to do defrag via cron like once a week?