Rancher 2.0 DR Test

dr.md

Create snapshots and copy to localhost.

rke etcd snapshot-save --name test.db

export SOURCE=52.15.238.179

scp ubuntu@${SOURCE}:/opt/rke/etcd-snapshots/test.db ../../
scp ubuntu@${SOURCE}:/opt/rke/etcd-snapshots/pki.bundle.tar.gz ../../

Copy Snapshots to one node

export TARGET=52.15.212.134

scp ../../test.db ubuntu@${TARGET}:/tmp
scp ../../pki.bundle.tar.gz ubuntu@${TARGET}:/tmp

ssh ubuntu@${TARGET}
sudo su -
mkdir -p /opt/rke/etcd-snapshots
cp /tmp/test.db /opt/rke/etcd-snapshots
cp /tmp/pki.bundle.tar.gz /opt/rke/etcd-snapshots

Restore snapshot to single node

rke etcd snapshot-restore --name test.db
rke up

Swap dns/load balancers to new cluster

Delete dead nodes

kubectl get nodes                   
NAME            STATUS     ROLES                      AGE       VERSION
52.15.212.134   Ready      controlplane,etcd,worker   4m        v1.10.5
52.15.238.179   NotReady   controlplane,etcd,worker   36m       v1.10.5

kubectl delete node 52.15.238.179