Nagios Plugins for Linux v31

What's new in version v31 "Counter-intuitive"

Fixes

• Libraries

  • lib/container_docker_memory: fix an issue reported by clang-analyzer.
  • Make sure sysfs is mounted in the plugins that require it.

Enhancements / Changes

• Plugin check_filecount

  • New plugin check_filecount that returns the number of files found in one or more directories.

• Plugin check_memory

  • check_memory: support new units kiB/MiB/GiB. Feature asked by mdicss. See discussion #120.

• contrib/icinga2/CheckCommands.conf

  • Contribution from Lorenz RincewindsHat: add icinga2 command configurations.

• Build

  • configure: ensure libprocps is v4.0.0 or better if the experimental option --enable-libprocps is passed to configure.

• Test framework

  • Add some unit tests for lib/xstrton.
  • New unit tests tslibfiles_{filecount,hiddenfile,size}.

• Package creation

  • Add Linux Alpine 3.16 and remove version 3.13.
  • Do not package experimental plugins in the rpm nagios-plugins-linux-all.
  • Add Fedora 36 and drop Fedora 33 support.
  • CentOS 8 died a premature death at the end of 2021. Add packages for CentOS Stream 8 and 9.

• GitHub Workflows

  • Build the Nagios Plugins Linux on the LTS Ubuntu versions only. The version 21 seems dead.
  • Add build tests for all the supported oses.
  • Update the os versions used in tests.
  • CentOS 8 died a premature death at the end of 2021. Remove it from the list of test oses.
  • Add CodeQL analysis