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communitycloud:services:monitoring [2012/09/08 16:42]
tkilla 		communitycloud:services:monitoring [2017/05/12 17:54]
tkilla [Plugins]
Line 3: Line 3:
   * munin graphs   * munin graphs
   * monit service check & alarm system   * monit service check & alarm system
 +
 +
 +===== monit =====
 +
 +syntax is a bit tricky, but it is a reliable system..
 +
 +TBD
 +
 +
 +monit mailq via external script: https://lists.nongnu.org/archive/html/monit-general/2015-01/msg00015.html
  
 ===== munin ===== ===== munin =====
Line 8: Line 18:
 "Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems"... http://munin-monitoring.org/ "Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems"... http://munin-monitoring.org/
  
-...tbd...  +  * "munin" is the central server - run as cronjob every 5 min 
-\\ +  * "munin-node" is a client - run as service 
-\\+ 
 + 
 +**Configuration:** 
 + 
 +http://munin-monitoring.org/wiki/munin-node-configure 
 + 
 +**Plugin base setup:** 
 + 
 +  munin-node-configure --suggest   # test  
 +  munin-node-configure --shell     # install symlinks 
 + 
 +**Test a plugin:** 
 + 
 +  munin-run <plugin-name> 
 + 
 +**Test Server connection:** 
 + 
 +It should reply with the same hostname as setup in munin.conf. If not, edit munin-node.conf host_name on client 
 + 
 +  telnet <ip or localhost> <port>   # default port is 4949 
 + 
 + 
 +**Debug:** 
 + 
 +http://munin-monitoring.org/wiki/FAQ_no_graphs 
  
 ==== access munin-nodes via SSH tunnel ==== ==== access munin-nodes via SSH tunnel ====
Line 47: Line 82:
  
 more info: http://munin-monitoring.org/wiki/faq#Q:HowcanIuseanSSHtunneltoconnecttoanode more info: http://munin-monitoring.org/wiki/faq#Q:HowcanIuseanSSHtunneltoconnecttoanode
 +
 +
 +==== Plugins ====
 +
 +=== smart ===
 +
 +  ln -s /usr/share/munin/plugins/smart_ /etc/munin/plugins/smart_sda
 +  ln -s /usr/share/munin/plugins/smart_ /etc/munin/plugins/smart_sdb
 +
 +
 +=== nginx ===
 +
 +http://localhost/nginx_status required for nginx plugin
 +  ln -s /usr/share/munin/plugins/nginx_* /etc/munin/plugins/
 +
 +nginx vhost /sites-available/local:
 +
 +  server {
 +    listen   127.0.0.1:80;
 +
 +    access_log off;
 +    server_name _; 
 +    server_name_in_redirect off;
 +    root  /home/local;
 +
 +    # nginx_status configuration, need for Munin
 +    location /nginx_status {
 +        stub_status on;
 +        access_log   off;
 +        allow 127.0.0.1;
 +        deny all;
 +    }
 +    location / {
 +        return 301 http://<domain>$request_uri;
 +    }
 +  }
 +
 +required packages:
 +
 +  apt-get install  libio-all-lwp-perl 
 +
 +/etc/munin/plugin-conf.d/munin-node:
 +
 +  [nginx*]
 +   env.url http://127.0.0.1/nginx_status
 +
 +
 +=== apache ===
 +
 +needs the apache status page
 +
 +config:
 +  [apache]
 +   env.url   http://127.0.0.1:%d/server-status?auto
 +   env.ports 80
 +
 +packages:
 +  apt install libwww-perl
 +
 +symlinks:
 +  ln -s /usr/share/munin/plugins/apache_* /etc/munin/plugins/
 +
 +
 +
 +=== mysql / mariadb ===
 +
 +mysql user required:
 +  CREATE USER 'munin'@'localhost' IDENTIFIED BY 'PASSWD_HERE';
 +  GRANT PROCESS, REPLICATION CLIENT ON *.* TO 'munin'@'localhost';
 +
 +  apt-get install libcache-{perl,cache-perl} libdbd-mysql-perl
 +
 +
 +/etc/munin/plugin-conf.d/munin-node:
 +
 +  [mysql*]
 +   env.mysqlconnection DBI:mysql:information_schema;host=127.0.0.1;port=3306
 +   env.mysqluser munin
 +   env.mysqlpassword PASSWD_HERE
 +   env.cachenamespace munin_mysql_pri
 +  
 +   # for myisam / queries..:
 +   env.mysqlopts -h localhost -u munin --password=PASSWD_HERE
 +
 +enable replication graph:
 +  ln -s /usr/share/munin/plugins/mysql_ /etc/munin/plugins/mysql_replication
 +
 +bugfix: https://github.com/munin-monitoring/munin/pull/109/
 +
 +=== php-fpm ===
 +
 +https://github.com/MorbZ/munin-php-fpm
 +
 +follow install howto
 +
 +=== http wget website loadtime ===
 +  ln -s /usr/share/munin/plugins/http_loadtime /etc/munin/plugins/
 +
 +/etc/munin/plugin-conf.d/munin-node:
 +
 +  [http_loadtime]
 +  env.target https://<domain>/
 +
 +
 +=== todo ===
 +
 +very good list and setup of plugins: http://kevin.deldycke.com/2011/06/munin-monitor-debian-squeeze-server/
 +
 +
 +nginx access by project
 +
 +log analyser:  https://github.com/munin-monitoring/contrib/blob/master/plugins/nginx/nginx_byprojects/byprojects_access
 +  * needs logtail
 +  * access.logs must be configured in /usr/share/munin/plugins/nginx_byprojects_access
 +  * FIXME: doesn't work
 +
 +
 +Alerts:
 +
 +Do not work..for me.. yet..:
 +
 +  * https://www.linuxquestions.org/questions/linux-software-2/munin-changing-cpu-notify-threshold-606308/
 +  * http://blog-en.openalfa.com/how-to-configure-alerts-in-munin
  
  
communitycloud/services/monitoring.txt · Last modified: 2017/09/23 04:09 by tkilla

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