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====== Munin ======
===== Általános problémák =====

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


===== Grafikon generálás oldalnyitáskor =====
Forrás: [[http://munin-monitoring.org/wiki/CgiHowto]]

  - Függőségek telepítése:<code bash>
apt-get install libapache2-mod-fastcgi libcgi-fast-perl</code>
  - Munin FastCGI beállítása:<code xml /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>
</code>
  - Engedélyezd a következő beállításokat:<code bash /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
</code>
  - Hozzáférési jogok beállítása:<code bash>
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
</code>
  - Logrotate beállítások módosítása:<code bash /etc/logrotate.d/munin>
/var/log/munin/munin-graph.log {
        daily
        missingok
        rotate 7
        compress
        notifempty
        create 660 munin www-data   # <<<
}</code>
  - Apache újraindítása:<code bash>
/etc/init.d/apache2 restart
</code>


===== Plugin telepítése =====
  - Elérhető plugin-ek lekérdezése:<code bash>
munin-node-configure --suggest</code>
  - Symlink létrehozása
    * Egyszerű eset:<code bash>
ln -s /usr/share/munin/plugins/raid /etc/munin/plugins/</code>
    * Paraméterezett eset:<code bash>
ln -s /usr/share/munin/plugins/if_ /etc/munin/plugins/if_eth0
ln -s /usr/share/munin/plugins/if_ /etc/munin/plugins/if_eth1</code>
  - 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: <file bash /etc/munin/plugin-conf.d/munin-node>
...

[dhcpd3]
user root
group adm
</file>
  - Plugin tesztelése: <code bash>
munin-run dhcpd3
</code>
  - Változások életbeléptetése: <code bash>
service munin-node restart
</code>
==== Pluginek ====
  * git clone https://github.com/pkhamre/flashcache-munin.git
  * git clone https://github.com/munin-monitoring/contrib.git

<code>
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
</code>


===== Ajánlott pluginek telepítése =====
<code bash>
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
</code>


===== Windows node =====
  * http://sourceforge.net/projects/munin-nodewin32/


===== Egyéb Munin pluginek =====
<code bash>
git clone 'https://github.com/munin-monitoring/contrib.git' /opt/git-3th/munin-monitoring_contrib
</code>

===== Plugin futtatása =====
<code bash>
munin-run "plugin-name"
</code>


===== TLS kapcsolat =====
  * http://munin-monitoring.org/wiki/MuninTLSSetup

===== Munin terhelés csökkentése NICE-al =====
<file bash /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
</file>




{{tag>munin}}\\
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