This lab aims to guide you to take a complete backup of your ESXi host and restore it whenever required.
- Access of vCenter through vSphere Web Client.
- Access of CLI of ESXi Host and SSH enabled.
- Knowledge of Basic ESXi commands: im-cmd.
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After completing this lab, you will be able:
- Understand the need for Backup and Restore of ESXi servers
- To back up the ESXi host in the .tgz file
- To restore the ESXi host from the backup file
- Verify the restoration of ESXi Host and Unregistered VMs
Step-by-Step Lab Guide
PART-I Taking backup of ESXi host
- Open vSphere host client and Login to ESXi host (sa-ESXi-01 –> 172.20.10.51) using root.
- View all details of the ESXi host as we will back up the sa-ESXi-01 host for backup.
- Access the console of an ESXi-01 as a root through SSH, as we will take file-based backup using commands.
- First, sync the configuration setting of the ESXi host using:vim-cmd hostsvc/firmware/sync_config
- Now Take backup using the command: vim-cmd hostsvc/firmware/backup_configIt will give a URL for downloading the backup bundle in .tgz file format.
- Copy the URL and replace FQDN or IP of the ESXi host with *. Here we replaced * with 172.20.10.51 IP. Now using the wget command, download the backup in the current directory.
- Create Directory “Backup” under VMFS01-01 datastore.
- Copy this .tgz backup file to /vmfs/volumes/VMFS01-01/Backup path.
- Cross-check from the datastore tab of the ESXi host client that this backup file should be available in the Backup folder of VMFS01-01 datastore.
PART-II To restore ESXi from Back Up file.
- Go to ESXi Host web client and unregister one VM – Ubuntu Server from ESXi host– so automatic VM restoration happens after backup.
- copy the backup bundle file from the datastore folder to the /tmp directory.
- Put ESXi host into maintenance mode using command and cross verify from ESXi host web client.vim-cmd hostsvc/maintenance_mode_enter
- Rename the backup file to configBundle.tgz
- Now restore the backup using the following command:vim-cmd hostsvc/firmware/restore_config /tmp/configBundle.tgz Here, reboot the ESXi host as we are restoring from the backup.
- Now log in to the ESXi host client again and verify the automatic restoration of the VM – Ubuntu Server and backup.
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WRITTEN BY Rahulkumar Shrimali