How To Identify the Master Node With Latest ETCD Backup

Problem

How to identify which Master node has the latest ETCD backup/snapshot?

Environment

• Platform9 Managed Kubernetes - All Versions
• ETCD

Procedure

1. The backup is run on only one of the master nodes part of the cluster. You can identify the master node on which the recent backup was completed successfully. The output will give you the NodeIP/Nodename on which the most recent backups are stored.

Sample Output

# kubectl get pods -n kube-system -o wide | grep -i etcd-backup
NAME                                     READY   STATUS      RESTARTS   AGE   IP              NODE
etcd-backup-27407100-njkb6               0/2     Completed   0          87m   10.128.147.106  track2
etcd-backup-27407130-4kf9g               0/2     Completed   0          57m   10.128.147.106  track2
etcd-backup-27407160-vj9w9               0/2     Completed   0          27m   10.128.147.106  track2

Sample Output

[root@track2 ~]# ls -lrt /etc/pf9/etcd-backup
total 74172
-rw-------. 1 root root 25313312 Feb  9 17:30 etcd-snapshot-2022-02-09_17:30:04_UTC.db
-rw-------. 1 root root 25313312 Feb  9 18:00 etcd-snapshot-2022-02-09_18:00:05_UTC.db
-rw-------. 1 root root 25313312 Feb  9 18:30 etcd-snapshot-2022-02-09_18:30:04_UTC.db

Info

The default backup path is /etc/pf9/etcd-backup. The backup path and interval are configurable from the U/I during cluster creation OR using the Edit Cluster option on existing clusters.

The steps to enable/disable ETCD Backup and configure its parameters using Qbert API can be referenced here How-To Enable ETCD Backup Using Qbert API.