Ubuntu 16.04 に Munin(CGI) + Nginx をインストール・設定

Ubuntu 16.04 に Munin(CGI) + Nginx をインストール・設定しました。
日本語の情報が見当たらなかったので、備忘録です。

Munin インストール

sudo apt-get install munin munin-node spawn-fcgi

Munin 設定

設定ファイルを変更

/etc/munin/munin.conf

$ diff munin.conf munin.conf.org 
12,15d11
< dbdir   /var/lib/munin
< htmldir /var/cache/munin/www
< logdir /var/log/munin
< rundir  /var/run/munin
20d15
< tmpldir /etc/munin/templates
46d40
< graph_strategy cgi
76d69
< html_strategy cgi

Munin 再起動

$ sudo /etc/init.d/munin restart
$ sudo /etc/init.d/munin-node restart

Munin CGI 設定

CGIログのオーナを設定

$ sudo chown munin /var/log/munin/munin-cgi-*.log

起動スクリプト 作成

$ cat /lib/systemd/system/munin-fastcgi-graph.service
[Unit]
Description=FastCGI spawner for Munin Graph

[Service]
ExecStart=/usr/bin/spawn-fcgi -s /var/run/munin/fastcgi-graph.sock \
-P /var/run/munin/fastcgi-graph.pid -U www-data -u munin -g munin \
/usr/lib/munin/cgi/munin-cgi-graph
Type=forking
PIDFile=/var/run/munin/fastcgi-graph.pid
Restart=always
SyslogIdentifier=munin-fastcgi-graph

[Install]
WantedBy=multi-user.target

$ cat /lib/systemd/system/munin-fastcgi-html.service
[Unit]
Description=FastCGI spawner for Munin Html

[Service]
ExecStart=/usr/bin/spawn-fcgi -s /var/run/munin/fastcgi-html.sock \
-P /var/run/munin/fastcgi-html.pid -U www-data -u munin -g munin \
/usr/lib/munin/cgi/munin-cgi-html
Type=forking
PIDFile=/var/run/munin/fastcgi-html.pid
Restart=always
SyslogIdentifier=munin-fastcgi-html

[Install]
WantedBy=multi-user.target

Munin CGI 起動・設定

$ sudo service munin-fastcgi-graph start
$ sudo service munin-fastcgi-html start
$ sudo systemctl enable munin-fastcgi-graph.service 
$ sudo systemctl enable munin-fastcgi-html.service

Nginx インストール

sudo apt-get install nginx

Nginx 設定

設定ファイルを変更

$ cat /etc/nginx/sites-available/default
server {
...
  location ^~ /munin-cgi/munin-cgi-graph/ {
    fastcgi_split_path_info ^(/munin-cgi/munin-cgi-graph)(.*);
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_pass unix:/var/run/munin/fastcgi-graph.sock;
    include fastcgi_params;
  }

  location /munin/static/ {
    alias /etc/munin/static/;
  }

  location /munin/ {
    fastcgi_split_path_info ^(/munin)(.*);
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_pass unix:/var/run/munin/fastcgi-html.sock;
    include fastcgi_params;
  }
...
}

※一部省略してます

Nginx 再起動

$ sudo /etc/init.d/nginx restart