25.4. munin-node and plugins

config: /etc/munin/munin-node.conf

plugins: /usr/share/munin/plugins/

25.4.1. munin-node.conf

allow ^127\.0\.0\.1$
allow ^192\.168\.3\.5$

25.4.2. mysql plugin

mysql

# ln -s /usr/share/munin/plugins/mysql_* /etc/munin/plugins

# vim /etc/munin/plugin-conf.d/munin-node
env.mysqlopts -uneo -pchen

# or

env.mysqlopts -h 172.16.1.17 -u monitor -ppassword

# service munin-node start

验证安装，telnet localhost 4949 之后，执行 fetch mysql_queries

25.4.3. apache plugin

apache

# ln -s /usr/share/munin/plugins/apache_* /etc/munin/plugins

# vim /etc/httpd/conf/httpd.conf
ExtendedStatus On
<Location /server-status>
    SetHandler server-status
    Order deny,allow
    Deny from all
    Allow from .example.com
	Allow from localhost    
</Location>

# /etc/init.d/httpd restart
# service munin-node restart

验证安装,telnet localhost 4949 之后，执行 fetch apache_processes

25.4.4. memcached plugin

memcached plugin要求符号链接名字的格式是: memcached_connections_[IP Address]_[Port], IP与Port是在符号链接名字中配置的

ln -s /usr/share/munin/plugins/memcached_bytes_ /etc/munin/plugins/memcached_bytes_127_0_0_1_11211
ln -s /usr/share/munin/plugins/memcached_connections_ /etc/munin/plugins/memcached_connections_127_0_0_1_11211
ln -s /usr/share/munin/plugins/memcached_hits_ /etc/munin/plugins/memcached_hits_127_0_0_1_11211
ln -s /usr/share/munin/plugins/memcached_items_ /etc/munin/plugins/memcached_items_127_0_0_1_11211
ln -s /usr/share/munin/plugins/memcached_requests_ /etc/munin/plugins/memcached_requests_127_0_0_1_11211
ln -s /usr/share/munin/plugins/memcached_traffic_ /etc/munin/plugins/memcached_traffic_127_0_0_1_11211

验证安装，telnet localhost 4949 之后，执行 fetch memcached_requests_127_0_0_1_11211

原文出处：Netkiller 系列 手札
本文作者：陈景峯
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