Advice and Troubleshooting
- queueprocd fails to start with "Unable to redirect stderr" error
- How-to run MTR to check network behavior of a specific service
- cPanel updates fail with package conflicts after a CloudLinux installation removal
- Kernel vulnerability CVE-2020-14386
- KernelCare Logrotate Configuration Fails with "Anacron job 'cron.daily' on $DOMAIN.TLD" Error
- MySQL Fails To Restart With The "Failed at step NAMESPACE spawning /bin/sh: No space left on device" Error
- Can't Update RPMs on an RHEL 7 Server
- cpanel-dovecot-solr.service Fails with "solr: Port 8984 is already being used by another process (pid: ###)" Error
- Failed to start service: Unit is masked.
- Out of memory errors with free memory and no limits set
- dig Fails With the "dig: error while loading shared libraries: libGeoIP.so.1: cannot open shared object file: No such file or directory" Error
- /bin/sh: COMMAND: command not found
- Filesystem Performance Tuning
- "su USER" Fails With "su: cannot create child process: Resource temporarily unavailable" Error
- Yum failing with "This system is not registered with CLN" message
- CloudLinux License Activation Fails with "Yours `rhn-client-tools` is outdated" Error
- su: cannot open session: Cannot make/remove an entry for the specified session
- Hostname resets on restart using Virtuozzo
- Understanding Memory Usage On Linux Operating Systems
- kernel: TCP: out of memory -- consider tuning tcp_mem
- Chkservd Service Status Troubleshooting
- yum update fails due to matio and vips dependency conflict
- I'm using Amazon's EC2 and I can't access cPanel, WHM, or Webmail
- SSH won't start: bad configuration options
- How to handle "Error: Multilib version problems found."
- How can I determine a problem is due to File System Errors?
- I added additional space to my partition and it's not showing up, what else do I need to do?
- Error: Too many open files
- Certain Servers Using Cent7/8 or RHEL 7/8 Not Booting After Update
- Message "audit: backlog limit exceeded" reported and possibly hung system