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Article ID: 132495, created on Apr 8, 2018, last review on Apr 26, 2018

  • Applies to:
  • Operations Automation 7.3

Symptoms

When accessing Linux File Manager, the following error is displayed:

Invalid backend configuration.
Readable volumes not available.

Cause

During the upgrade, the configuration files of ProFTPd as well as branding rewrite rules were changed.

Resolution

  • Make sure the firewall is configured according to the guide. Note: The default range for passive port in /usr/local/etc/proftpd_vhost_confs_pem/ is 49152 65534. It should be either modified according to the Firewall Guide to 60000:65535, or firewall must enable connections to the ports 49152 to 65534.

  • Make sure the proftpd service is running and listening the port 21:

    [root@web1 ~]# netstat -ntpl | grep ftp
    tcp        0      0 192.168.0.3:21         0.0.0.0:*     LISTEN      19123/proftpd
    tcp        0      0 192.168.0.3:2021       0.0.0.0:*     LISTEN      19123/proftpd
    

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