Managing backup hosts
A backup host acts as a proxy client which hosts all the backup and restore operations for Hadoop clusters. For the Hadoop plug-in for NetBackup, the backup host performs all the backup and restore operations without the need to install a separate agent on the Hadoop cluster.
The backup host must be a Linux computer. NetBackup 11.2 release supports only RHEL and SUSE platforms as a backup host.
The backup host can be a NetBackup client or a media server or a primary server. The recommendation is that you have a media server as a backup host.
Consider the following before adding a backup host:
For backup operations, you can add one or more backup hosts.
For restore operations, you can add only one backup host.
A primary, media, or client can perform the role of a backup host.
Hadoop plug-in for NetBackup is installed on all the backup hosts.
To add a backup host
- Open the NetBackup web UI.
- Create a BigData policy.
- In the Backup selections tab, click Add and add the backup host in the following format:
Backup_Host=IP_address or hostname
Alternatively, you can also add a backup host using the following command:
For Windows:
<install_path>\NetBackup\bin\admincmd\bpplinclude PolicyName -add Backup_Host=IP_address or hostname
For UNIX:
/usr/openv/var/global/bin/admincmd/bpplinclude PolicyName -add Backup_Host=IP_address or hostname
- As a best practice, add the entries of all the NameNodes and DataNodes to the
/etc/hostsfile on all the backup hosts. You must add the host name in FQDN format.OR
Add the appropriate DNS entries in the
/etc/resolv.conffile.
To remove a backup host
- Open the policy that you want to edit.
- In the Backup selections tab, locate the backup selection that contains backup host that you want to remove.
- Click Actions > Delete.
Alternatively, you can also remove a backup host using the following command:
For Windows:
install_path\NetBackup\bin\admincmd\bpplinclude PolicyName -delete Backup_Host=IP_address or hostname
For UNIX:
/usr/openv/var/global/bin/admincmd/bpplinclude PolicyName -delete 'Backup_Host=IP_address or hostname'