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docs: add info about etcd snapshot #129

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Signed-off-by: anupriya0703 anupriya.gupta@mayadata.io

anupriya0703 added 2 commits May 3, 2023 10:07
Signed-off-by: anupriya0703 <anupriya.gupta@mayadata.io>
Signed-off-by: anupriya0703 <anupriya.gupta@mayadata.io>
kubectl exec -it mayastor-etcd-0 -n mayastor -- bash
kubectl cp -n mayastor mayastor-etcd-0:/tmp/snapshot.db ./snapshot.db
ls -lrt snapshot.db
kubectl exec -it mayastor-etcd-0 -n mayastor -- bash
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Are the steps repeated here?

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Do we need to take the snapshot on every pod of etcd? or only on the master pod?
cc @datacore-tilangovan

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Hi Vishnu, taking snapshot from one pod is enough.

ls -lrt snapshot.db
kubectl exec -it mayastor-etcd-0 -n mayastor -- bash
kubectl cp -n mayastor mayastor-etcd-0:/tmp/snapshot.db ./snapshot.db
ls -lrt snapshot.db
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What is the user supposed to be doing with this snapshot?

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I think we need to provide more explanation on this. Why should a user take a etcd snapshot? Where should it be stored (if needed)? How to recover from the snapshot in case of an irrecoverable failure?

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@datacore-tilangovan Could you please help me with the above information

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@avishnu It can be stored in the local, let me draft some new steps for snapshot restore.

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3 participants