Problem Description:

Understanding the flow of Linux TurboTier backups

If the backup Job Log shows the below line, it means the backup is mapped to Linux TurboTier.
Attempting to connect to cache... Communication from Server / Backup Proxy to Linux TurboTier is configured on port 443. u'cacheaddr': u'DRUVA-CC:443'
If unable to connect to Linux TurboTier, there is a re-attempt every 30 Seconds. (Total 10 attempts)
Error Connecting to cache server. Error:[Errno -2] Name or service not known Retrying...[9]
Once the 10 attempts are exhausted and if:
- Option - Backup to Cloud if unable to backup to Cache is selected in Phoenix TurboTier configuration then backups are uploaded on Cloud
  Setting cache state as retried after retry cycle 'Could not connect to TurboTier. Backup operation falling back to Cloud.'
- Option - Backup to Cloud if unable to backup to Cache is not selected in Phoenix TurboTier configuration then backups will fail.
  'Could not connect to TurboTier. Failing the cache-only backup operation.’

Resolution

To ensure the Phoenix Linux TurboTier server is functioning correctly and connected to the Druva Console, follow these steps:

Confirm that the Phoenix Linux TurboTier server is in a connected state on the Druva Console.
Use the following commands on the Linux TurboTier server to manage or check the service status:
- Agent Version 4.x.x:
  /etc/init.d/PhoenixCacheServer start / stop / restart / status
- Agent Version 6.x.x:
  service Druva-EnterpriseWorkloads start / stop / restart /status
Ensure the Phoenix Linux TurboTier is upgraded to the latest version.
Test connectivity from the Backup Server/Backup Proxy to the Phoenix TurboTier server using:
- telnet <TurboTier-name> 443
Check for DNS issues by pinging the Phoenix TurboTier server using its IP, short name, and FQDN:
- ping <TurboTier-fqdn/TurboTier-ip/TurboTier-shortname>
If there are connection issues, add the Phoenix Linux TurboTier server entries to the Hosts file of the Backup Server/Backup Proxy in the format:
- IP FQDN Short_name
Verify that the time on the Phoenix Linux TurboTier server is correctly set according to the selected time zone.
Ensure the data volume (PhoenixCacheStore) path configured during setup is accessible on the Phoenix TurboTier server.
Confirm that port 443 is not being used by any other application on the Phoenix TurboTier server. Use the following commands to verify:
- netstat -an
- netstat -an | grep 443
Check the PhoenixTurboTier.log file for errors:
- /var/log/PhoenixTurboTier/PhoenixTurboTier.log