When trying to sync all accounts in a large scale environment, the sync fails. The log shows that there are too many open files and the sync fails to open any additional files.
To resolve this issue, update the limit of the number of files on the Cortex XSOAR service level as follows:
Open the demisto.service file on each host. It is located
Under [Service], update the following parameters with a number that will be large enough to avoid the error. if these parameters do not exist, add them.
[Unit] Description=Demisto Server Service After=network.target [Service] LimitNOFILE=100000000 LimitNOFILESoft=100000000 WorkingDirectory=/usr/local/demisto Type=simple User=demisto ExecStart=/usr/local/demisto/server EnvironmentFile=/etc/environment Restart=always RestartPreventExitStatus=29 [Install] WantedBy=multi-user.target
Reload the daemon.
Restart the service.
systemctl restart demisto