commit bd3e49a80ec70a9619d339a03a39ba3f580fba04 · pyrox.dev/nixpkgs

+31 -37
nixos/modules/services/monitoring/munin.nix
···

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         nodeCfg = config.services.munin-node;

     

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         cronCfg = config.services.munin-cron;

     

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       -
         muninPlugins = pkgs.stdenv.mkDerivation {

     

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       -
           name = "munin-available-plugins";

     

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           buildCommand = ''

     

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             mkdir -p $out

     

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       -
       

     

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             cp --preserve=mode ${pkgs.munin}/lib/plugins/* $out/

     

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       -
       

     

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             for file in $out/*; do

     

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               case "$file" in

     

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                   */plugin.sh|*/plugins.history)

     

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                     chmod +x "$file"

     

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                     continue;;

     

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               esac

     

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       -
       

     

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       -
               # read magic makers from the file

     

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       -
               family=$(sed -nr 's/.*#%#\s+family\s*=\s*(\S+)\s*/\1/p' $file)

     

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               cap=$(sed -nr 's/.*#%#\s+capabilities\s*=\s*(.+)/\1/p' $file)

     

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       -
       

     

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               wrapProgram $file \

     

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                 --set PATH "/run/wrappers/bin:/run/current-system/sw/bin" \

     

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                 --set MUNIN_LIBDIR "${pkgs.munin}/lib" \

     

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                 --set MUNIN_PLUGSTATE "/var/run/munin"

     

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       -
       

     

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               # munin uses markers to tell munin-node-configure what a plugin can do

     

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               echo "#%# family=$family" >> $file

     

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               echo "#%# capabilities=$cap" >> $file

     

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             done

     

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       -
       

     

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             # NOTE: we disable disktstats because plugin seems to fail and it hangs html generation (100% CPU + memory leak)

     

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             rm -f $out/diskstats

     

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       -
           '';

     

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       -
           buildInputs = [ pkgs.makeWrapper ];

     

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         };

     

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       -
       

     

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         muninConf = pkgs.writeText "munin.conf"

     

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           ''

     

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             dbdir     /var/lib/munin

     
···

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             ${nodeCfg.extraConfig}

     

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           '';

     

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       +
       

     

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       +
         pluginConf = pkgs.writeText "munin-plugin-conf"

     

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       +
           ''

     

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             [hddtemp_smartctl]

     

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       +
             user root

     

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             group root

     

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       +
       

     

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             [meminfo]

     

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             user root

     

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             group root

     

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       +
       

     

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             [ipmi*]

     

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             user root

     

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             group root

     

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       +
           '';

     

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       +
       

     

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       +
         pluginConfDir = pkgs.stdenv.mkDerivation {

     

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           name = "munin-plugin-conf.d";

     

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       +
           buildCommand = ''

     

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             mkdir $out

     

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             ln -s ${pluginConf} $out/nixos-config

     

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           '';

     

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       +
         };

     

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       in

     

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       {

     
···

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             description = "Munin Node";

     

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             after = [ "network.target" ];

     

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             wantedBy = [ "multi-user.target" ];

     

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       -
             path = [ pkgs.munin ];

     

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       +
             path = with pkgs; [ munin smartmontools "/run/current-system/sw" "/run/wrappers" ];

     

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       +
             environment.MUNIN_LIBDIR = "${pkgs.munin}/lib";

     

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             environment.MUNIN_PLUGSTATE = "/var/run/munin";

     

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       +
             environment.MUNIN_LOGDIR = "/var/log/munin";

     

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             preStart = ''

     

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               echo "updating munin plugins..."

     

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               mkdir -p /etc/munin/plugins

     

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               rm -rf /etc/munin/plugins/*

     

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       -
               PATH="/run/wrappers/bin:/run/current-system/sw/bin" ${pkgs.munin}/sbin/munin-node-configure --shell --families contrib,auto,manual --config ${nodeConf} --libdir=${muninPlugins} --servicedir=/etc/munin/plugins 2>/dev/null | ${pkgs.bash}/bin/bash

     

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       +
               ${pkgs.munin}/bin/munin-node-configure --suggest --shell --families contrib,auto,manual --config ${nodeConf} --libdir=${pkgs.munin}/lib/plugins --servicedir=/etc/munin/plugins --sconfdir=${pluginConfDir} 2>/dev/null | ${pkgs.bash}/bin/bash

     

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       +
       

     

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               # NOTE: we disable disktstats because plugin seems to fail and it hangs html generation (100% CPU + memory leak)

     

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               rm /etc/munin/plugins/diskstats || true

     

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             '';

     

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             serviceConfig = {

     

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       -
               ExecStart = "${pkgs.munin}/sbin/munin-node --config ${nodeConf} --servicedir /etc/munin/plugins/";

     

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       +
               ExecStart = "${pkgs.munin}/sbin/munin-node --config ${nodeConf} --servicedir /etc/munin/plugins/ --sconfdir=${pluginConfDir}";

     

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             };

     

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           };

     

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