Nagios Core安装报错：无效组‘nagios’问题求助

Looks like the issue is straightforward: even though you've created the nagios user, the nagios group doesn't exist (or the user isn't properly associated with it). The make install-config step tries to set file permissions for the nagios group, which fails because it can't find the group.

Here's how to resolve this step-by-step:

• First, verify if the nagios group exists on your system:

  getent group nagios
  

  If you get no output, the group is missing.

• Create the nagios group:

  groupadd nagios
  

• Ensure the nagios user is added to the nagios group (in case it wasn't linked during user creation):

  usermod -a -G nagios nagios
  

• While you're at it, double-check that the nagcmd group (required for external command access) exists too, since your earlier logs mention it:

  groupadd nagcmd
  usermod -a -G nagcmd nagios
  # Add your web server user to nagcmd as well (use www-data for Debian/Ubuntu, httpd for RHEL/CentOS)
  usermod -a -G nagcmd www-data
  

• Now re-run the failed installation step:

  make install-config
  

This should fix the group permission error and let you proceed with the Nagios Core installation.

内容的提问来源于stack exchange，提问作者Manikandan