Centralized Monitoring is not displaying the statistics

Issue

Centralized Monitoring statistics is idle. No data is showing on the page.

Environment

• CloudLinux OS Shared Pro license
• Cloudlinux 6/7/8 
• rhn-client-tools:
  - for CloudLinux OS Legacy 6 package version 1.1.15-3.el6.cloudlinux.26 or later 
  - for CloudLinux OS Legacy 7 package version 2.0.2-31.el7.clouldinux or later 
  - for CloudLinux OS Legacy 8 package version 2.8.16-14.module_el8.1.0+6074+9dc6073e.cloudlinux.2 or later 
• cl-end-server-tools package version 1.0.7-1 or later
• cl-node-exporter package version 1.1.0-2  or later
• lve-stats package version 3.0.7-2 or later 
• lve-utils package version 4.2.21-2 or later
• alt-python27-cllib package version 2.1.13-1 or later
• lvemanager package version  6.2.10-1 or later

Solution

1. Check that you have the CloudLinux OS Shared Pro license activated
2. Check that required packages (see the list above) are installed on the end server
3. Check that service collecting and sending statistics is running:

   # service cl_plus_sender status

   If you receive such output:

   Redirecting to /bin/systemctl restart cl_plus_sender.service
   Failed to restart cl_plus_sender.service: Unit not found.

   Please try to enable the service:

   # /usr/share/cloudlinux/cl_plus/manage_clplus enable

   If it hasn't helped, and you're still receiving the next output:

   Failed to restart cl_plus_sender.service: Unit not found. 

   Please do the next steps:
   - perform rhn_check command to receive a new registration token (JWT token);
   - remove related lve packages this way:

   # rpm -e --nodeps --justdb lve-stats lve-utils alt-python27-cllib lvemanager

   - install them again

   # yum install lve-stats lve-utils alt-python27-cllib lvemanager

   - perform installation of cl_plus_sender service and check its status:

   # /usr/share/cloudlinux/cl_plus/manage_clplus enable 
   # service cl_plus_sender status 

4. If an issue exists still - please collect the logs:
   /var/log/clplus_sender.log 
   And provide them with a new ticket to the support team.

Cause

The issue can happen if there is no JWT token with CloudLinux OS Shared Pro sign on the server.

Useful links

Centralized Monitoring