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tudasbazis:linux:munin

Tartalomjegyzék

Munin

Általános problémák

  1. Munin bind address beállítása az /etc/munin/munin-node.conf-ban:
    # Which address to bind to;
#host *
host 127.0.0.1

Grafikon generálás oldalnyitáskor

Forrás: http://munin-monitoring.org/wiki/CgiHowto

  1. Függőségek telepítése:
    apt-get install libapache2-mod-fastcgi libcgi-fast-perl
  2. Munin FastCGI beállítása:
    /etc/apache2/conf.d/munin
    #Alias /munin /var/cache/munin/www
 
<Location /cgi-bin/munin-fastcgi-graph>
    SetHandler  fastcgi-script
</Location>
 
<Directory /var/cache/munin/www>
        Order allow,deny
        Allow from localhost 127.0.0.0/8 ::1
        Options None
 
        # This file can be used as a .htaccess file, or a part of your apache
        # config file.
        #
        # For the .htaccess file option to work the munin www directory
        # (/var/cache/munin/www) must have "AllowOverride all" or something
        # close to that set.
        #
 
        # AuthUserFile /etc/munin/munin-htpasswd
        # AuthName "Munin"
        # AuthType Basic
        # require valid-user
 
        # This next part requires mod_expires to be enabled.
        #
 
        # Set the default expiration time for files to 5 minutes 10 seconds from
        # their creation (modification) time.  There are probably new files by
        # that time.
        #
 
    <IfModule mod_expires.c>
        ExpiresActive On
        ExpiresDefault M310
    </IfModule>
 
</Directory>
  3. Engedélyezd a következő beállításokat:
    /etc/munin/munin.conf
    includedir /etc/munin/munin-conf.d
 
graph_strategy cgi
munin_cgi_graph_jobs 6
cgiurl_graph /cgi-bin/munin-fastcgi-graph
max_graph_jobs 6
 
[szerver.tim]
    address 127.0.0.1
    use_node_name yes
  4. Hozzáférési jogok beállítása:
    chgrp www-data /usr/share/munin/munin-graph
chgrp www-data /var/log/munin /var/log/munin/munin-graph.log
chmod g+w /var/log/munin /var/log/munin/munin-graph.log
 
chgrp -R www-data /var/cache/munin/www/tim
chmod -R g+w /var/cache/munin/www/tim
  5. Logrotate beállítások módosítása:
    /etc/logrotate.d/munin
    /var/log/munin/munin-graph.log {
        daily
        missingok
        rotate 7
        compress
        notifempty
        create 660 munin www-data   # <<<
}
  6. Apache újraindítása:
    /etc/init.d/apache2 restart

Plugin telepítése

  1. Elérhető plugin-ek lekérdezése:
    munin-node-configure --suggest
  2. Symlink létrehozása
    • Egyszerű eset:
      ln -s /usr/share/munin/plugins/raid /etc/munin/plugins/
    • Paraméterezett eset:
      ln -s /usr/share/munin/plugins/if_ /etc/munin/plugins/if_eth0
ln -s /usr/share/munin/plugins/if_ /etc/munin/plugins/if_eth1
  3. Ellenőrizni kell a scriptet, hogy van-e benne olyan paraméter, amit be kell állítani (elérési út, felhasználó, …) Pl. felhasználót és/vagy csoportot így lehet beállítani az dhcpd3 modulnak:
    /etc/munin/plugin-conf.d/munin-node
    ...
 
[dhcpd3]
user root
group adm
  4. Plugin tesztelése: 
    munin-run dhcpd3
  5. Változások életbeléptetése: 
    service munin-node restart

Pluginek

lrwxrwxrwx 1 root root   40 Jun  3 16:19 apache_accesses -> /usr/share/munin/plugins/apache_accesses
lrwxrwxrwx 1 root root   60 Jun 15 12:27 apcupsd_ww -> /opt/git-3th/munin-monitoring_contrib/plugins/ups/apcupsd_ww
lrwxrwxrwx 1 root root   28 Jun  3 16:23 apt -> /usr/share/munin/plugins/apt
lrwxrwxrwx 1 root root   32 Jun  3 16:24 apt_all -> /usr/share/munin/plugins/apt_all
lrwxrwxrwx 1 root root   30 Jun  3 16:24 bind9 -> /usr/share/munin/plugins/bind9
lrwxrwxrwx 1 root root   35 Jun  3 16:25 bind9_rndc -> /usr/share/munin/plugins/bind9_rndc
lrwxrwxrwx 1 root root   28 Jun  3 14:39 cpu -> /usr/share/munin/plugins/cpu
lrwxrwxrwx 1 root root   33 Jun  3 14:39 cpuspeed -> /usr/share/munin/plugins/cpuspeed
lrwxrwxrwx 1 root root   27 Jun  3 14:39 df -> /usr/share/munin/plugins/df
lrwxrwxrwx 1 root root   33 Jun  3 14:39 df_inode -> /usr/share/munin/plugins/df_inode
lrwxrwxrwx 1 root root   34 Jun  3 14:39 diskstats -> /usr/share/munin/plugins/diskstats
lrwxrwxrwx 1 root root   32 Jun  3 14:39 entropy -> /usr/share/munin/plugins/entropy
lrwxrwxrwx 1 root root   54 Jun 19 13:42 flashcache_stats -> /opt/git-3th/pkhamre_flashcache-munin/flashcache_stats
lrwxrwxrwx 1 root root   30 Jun  3 14:39 forks -> /usr/share/munin/plugins/forks
lrwxrwxrwx 1 root root   35 Jun  3 14:39 fw_packets -> /usr/share/munin/plugins/fw_packets
lrwxrwxrwx 1 root root   33 Jun  3 16:25 hddtemp2 -> /usr/share/munin/plugins/hddtemp2
lrwxrwxrwx 1 root root   38 Jun  3 14:39 http_loadtime -> /usr/share/munin/plugins/http_loadtime
lrwxrwxrwx 1 root root   32 Jun  3 14:39 if_err_eth0 -> /usr/share/munin/plugins/if_err_
lrwxrwxrwx 1 root root   32 Jul  2 14:23 if_err_eth1 -> /usr/share/munin/plugins/if_err_
lrwxrwxrwx 1 root root   28 Jun  3 14:39 if_eth0 -> /usr/share/munin/plugins/if_
lrwxrwxrwx 1 root root   28 Jul  2 14:24 if_eth1 -> /usr/share/munin/plugins/if_
lrwxrwxrwx 1 root root   35 Jun  3 14:39 interrupts -> /usr/share/munin/plugins/interrupts
lrwxrwxrwx 1 root root   31 Jun  3 14:39 iostat -> /usr/share/munin/plugins/iostat
lrwxrwxrwx 1 root root   35 Jun  3 14:39 iostat_ios -> /usr/share/munin/plugins/iostat_ios
lrwxrwxrwx 1 root root   33 Jun  3 14:39 irqstats -> /usr/share/munin/plugins/irqstats
lrwxrwxrwx 1 root root   29 Jun  3 14:39 load -> /usr/share/munin/plugins/load
lrwxrwxrwx 1 root root   31 Jun 14 10:27 memory -> /usr/share/munin/plugins/memory
lrwxrwxrwx 1 root root   36 Jun  3 14:39 munin_stats -> /usr/share/munin/plugins/munin_stats
lrwxrwxrwx 1 root root   39 Jun  3 14:39 ntp_kernel_err -> /usr/share/munin/plugins/ntp_kernel_err
lrwxrwxrwx 1 root root   44 Jun  3 14:39 ntp_kernel_pll_freq -> /usr/share/munin/plugins/ntp_kernel_pll_freq
lrwxrwxrwx 1 root root   43 Jun  3 14:39 ntp_kernel_pll_off -> /usr/share/munin/plugins/ntp_kernel_pll_off
lrwxrwxrwx 1 root root   35 Jun  3 14:39 ntp_offset -> /usr/share/munin/plugins/ntp_offset
lrwxrwxrwx 1 root root   35 Jun  3 14:39 open_files -> /usr/share/munin/plugins/open_files
lrwxrwxrwx 1 root root   36 Jun  3 14:39 open_inodes -> /usr/share/munin/plugins/open_inodes
lrwxrwxrwx 1 root root   42 Jun  3 14:39 postfix_mailqueue -> /usr/share/munin/plugins/postfix_mailqueue
lrwxrwxrwx 1 root root   43 Jun  3 14:39 postfix_mailvolume -> /usr/share/munin/plugins/postfix_mailvolume
lrwxrwxrwx 1 root root   34 Jun  3 14:39 processes -> /usr/share/munin/plugins/processes
lrwxrwxrwx 1 root root   33 Jun  3 14:39 proc_pri -> /usr/share/munin/plugins/proc_pri
lrwxrwxrwx 1 root root   29 Jun  3 14:39 swap -> /usr/share/munin/plugins/swap
lrwxrwxrwx 1 root root   32 Jun  3 14:39 threads -> /usr/share/munin/plugins/threads
lrwxrwxrwx 1 root root   31 Jun  3 14:39 uptime -> /usr/share/munin/plugins/uptime
lrwxrwxrwx 1 root root   31 Jun  3 14:39 vmstat -> /usr/share/munin/plugins/vmstat

Ajánlott pluginek telepítése

munin-node-configure --suggest 2>/dev/null | grep '| no   | yes' | cut -d' ' -f1 | grep -v '_$' | \
  while read a; do echo -e "\n### $a"; ln -s /usr/share/munin/plugins/$a /etc/munin/plugins/; \
  /etc/munin/plugins/$a autoconf yes; done
service munin-node restart

Windows node

Egyéb Munin pluginek

git clone 'https://github.com/munin-monitoring/contrib.git' /opt/git-3th/munin-monitoring_contrib

Plugin futtatása

munin-run "plugin-name"

TLS kapcsolat

Munin terhelés csökkentése NICE-al

/etc/init/munin-node.conf
# munin-node
 
description "munin-node"
author "Chuck Short <zulcss@ubuntu.com>"
 
start on (filesystem and net-device-up IFACE=lo)
stop on runlevel [!2345]
 
env DAEMON=/usr/sbin/munin-node
 
nice 10 ### itt csokkentjuk a prioritast
expect fork
respawn
 
pre-start script
    mkdir -p /var/run/munin
    chown munin:munin /var/run/munin
    chmod 0755 /var/run/munin
end script
 
script
    [ -r /etc/default/munin-node ] && . /etc/default/munin-node
 
    exec $DAEMON $DAEMON_ARGS
end script


tudasbazis/linux/munin.txt · Utolsó módosítás: 2014.10.24 00:33 (külső szerkesztés)

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