No suitable servers found (set `serverSelectionTryOnce`): [connection closed by calling ismaster at 'localhost: 27217']

Symptoms

Attempting to reindex your backups, within Jetbackup, may result in an error similar to the following:

[August 12, 2020 05:43:53 PM -0300] Indexing account "account" ... [August 12, 2020 05:43:53 PM -0300] [ERROR] interrupted at shutdown 
No suitable servers found (set `serverSelectionTryOnce`): [connection closed by calling ismaster at 'localhost: 27217']

Description 

This can sometimes occur if the mongod service is down.

Workaround

To resolve the issue, you will want to restart the mongod service with the following:

systemctl restart jetmongod

For CentOS or CloudLinux 6 systems, you can run the following to restart the mongod service:

service jetmongod restart