backup mongo DB
backup on docker
docker ps
docker exec -it 71da07ceb777 /bin/bash
mongodump
exit
docker cp 71da07ceb777:/dump /mnt/data/backupsbackup on kubernetes
kubectl -n <namespace> get pod
kubectl -n <namespace> exec -ti <podname> -- /bin/bash
mongodump -u <username> -p <password> --authenticationDatabase admin -o <place for backup>
kubectl -n <namespace> cp <podname>:/<pathtobackup> ~/<pathonyourmachine>upgrade RC
look up latest version available on dockerhub https://hub.docker.com/_/rocket-chat?tab=tags , select in Rancher Image:rocketchat/rocket.chat:3.5.1 (all three digits) or Image:rocketchat/rocket.chat:latest