[Features] support shell scripts during memberJoin - Githubissues

apecloud / kubeblocks

KubeBlocks is an open-source control plane software that runs and manages databases, message queues and other stateful applications on K8s.

https://kubeblocks.io

GNU Affero General Public License v3.0

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[Features] support shell scripts during memberJoin #7874

Open loomts opened 1 month ago

loomts commented 1 month ago

What is the user interaction of your feature developer can customize shell scripts when member join into the cluster

Is your feature request related to a problem? Please describe. etcd-addon need to handle member join scenario, such as

attach one etcd pod or startup a job pod and exec etcdctl --endpoints="old-peer-fqnd:2379" member add --peer-urls="new-peer1:new-peer1-fqnd:2380,new-peer2:new-peer2-fqnd:2380..."
change the config file of new etcd member, from initial-cluster-state: new to initial-cluster-state: existing

Describe the solution you'd like

select one role of cluster or startup a job pod and do some preparation
attach new member and grant them the authority to override the startup command

nayutah commented 1 month ago

wait for the API alignment for various actions