etcd backup and recovery in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to create a snapshot backup of etcd.

Kubernetes

ETCDCTL_API=3 etcdctl snapshot save [1]

Drag options to blanks, or click blank then click option'

A/etc/etcd/etcd.conf

B/var/lib/etcd/backup.db

C/usr/local/bin/etcd

D/var/log/etcd.log

Attempts:

3 left

💡 Hint

Common Mistakes

Using a directory path instead of a file path.

Using a config or log file path instead of a backup file.

The etcdctl snapshot save command requires the path where the snapshot file will be saved. Here, /var/lib/etcd/backup.db is a common location for backups.

2fill in blank

medium

Complete the command to check the status of the etcd cluster.

Kubernetes

ETCDCTL_API=3 etcdctl endpoint [1]

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Amember

Bbackup

Crestore

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'backup' or 'restore' which are unrelated to status checking.

Using 'member' which lists cluster members but not status.

The etcdctl endpoint status command shows the health and status of the etcd cluster endpoints.

3fill in blank

hard

Fix the error in the restore command by completing the missing flag.

Kubernetes

ETCDCTL_API=3 etcdctl snapshot restore backup.db [1] /var/lib/etcd-new

Drag options to blanks, or click blank then click option'

A--data-dir

B--backup-dir

C--config-file

D--log-dir

Attempts:

3 left

💡 Hint

Common Mistakes

Using --backup-dir which is not a valid flag for restore.

Confusing data directory with config or log directories.

The --data-dir flag specifies the directory where the restored etcd data will be stored.

4fill in blank

hard

Fill both blanks to set environment variables for etcdctl to connect securely.

Kubernetes

export ETCDCTL_API=3
export ETCDCTL_ENDPOINTS=[1]
export ETCDCTL_CACERT=[2]

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Ahttps://127.0.0.1:2379

B/etc/ssl/etcd/ca.crt

C/var/lib/etcd/data

Dhttp://localhost:2380

Attempts:

3 left

💡 Hint

Common Mistakes

Using HTTP instead of HTTPS for secure connection.

Using data directory path instead of CA certificate path.

The ETCDCTL_ENDPOINTS variable sets the etcd server address, usually with HTTPS and port 2379. The ETCDCTL_CACERT points to the CA certificate file for secure TLS connection.

5fill in blank

hard

Fill all three blanks to create a snapshot, check its status, and restore it to a new directory.

Kubernetes

ETCDCTL_API=3 etcdctl snapshot save [1]
ETCDCTL_API=3 etcdctl endpoint status --write-out=table
ETCDCTL_API=3 etcdctl snapshot restore [2] [3]

Drag options to blanks, or click blank then click option'

A/var/backups/etcd-snapshot.db

C--data-dir /var/lib/etcd-restored

D--data-dir /var/lib/etcd-new

Attempts:

3 left

💡 Hint

Common Mistakes

Using different snapshot file names for save and restore.

Omitting the --data-dir flag or using wrong directory.

First, save the snapshot to /var/backups/etcd-snapshot.db. Then check the cluster status. Finally, restore the snapshot from the same file to a new data directory /var/lib/etcd-new using the --data-dir flag.