安装Munin监控替代Cacti | Alex's blog

这次添加第二台服务器的时候是在受不了Cacti了，全都换成了Munin监控。

在CentOS5上安装的话，Munin并没有在官方的yum源中，需要自己手工添加yum源：

#rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm

#wget http://download.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm

#rpm -Uvh epel-release-5-4.noarch.rpm

centos6的话可能需要安装epel6.5的版本：

wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-5.noarch.rpm

rpm -ivh epel-release-6-5.noarch.rpm

然后在创建一个文件:/etc/yum.repos.d/dag.repo

#vim /etc/yum.repos.d/dag.repo

[dag]

name=Dag RPM Repository for Red Hat Enterprise Linux

baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag

gpgcheck=1

gpgkey=http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt

enabled=1

弄完以后就可以通过yum来安装Munin了。

1. 监控端（生成Munin图表的server）安装：

#yum -y install munin

2. 被监控端（提供运行数据的server）安装：

#yum -y install munin-node

3. 监控端配置:

Munin不用设置用户，只需要制定一个发布图表的目录即可，当然这个目录最好是web服务器中的目录，这样就能够直接通过web服务器查看监控信息了：

# vim /etc/munin/munin.conf

Configfile for Munin master

dbdir /var/lib/munin/

htmldir /var/www/munin/

#如果/var/www是web服务器的主目录的话，就在里面创建一个用户名为munin的目录否则munin无法写入；名称随便可以起，例子中的名称也是munin

logdir /var/log/munin

rundir /var/run/munin/

# This is an example of the correct way to activate Nagios warnings

contact.nagios.command /usr/local/nagios/bin/send_nsca nagioshost.example.com -c /usr/local/nagios/etc/send_nsca.cfg -to 60

# From and including the first host, no more global directives can be defined.

# Everything after one host definition belongs to that host, until another host definition is found.

[foo.example.com] # 创建一个名为foo.example.com的监控

#

address 12.23.34.56 #被监控的IP地址为12.23.34.56

4. 被监控端配置

# vim /etc/munin/munin-node.conf

log_level 4

log_file /var/log/munin/munin-node.log

port 4949

pid_file /var/run/munin/munin-node.pid

background 1

host *

user root

group root

setsid yes

ignore_file ~$

ignore_file \.bak$

ignore_file %$

ignore_file \.dpkg-(tmp|new|old|dist)$

ignore_file \.rpm(save|new)$

# host_name localhost.localdomain

allow ^127\.0\.0\.1$

#指定自己允许被那个IP地址监控,写成正则表达式的格式，例如允许被12.21.34.43监控就写成allow ^12\.21\.34\.43$

然后分别启动监控端的munin服务和被监控端的munin-node服务即可。第一次画图会比较慢，等几个小时后图形就正常了。

监控服务端启动：

#service munin start

#chkconfig munin on //为了保证服务开机启动

被监控段启动：

#service munin-node start

#chkconfig munin-node on //为了保证服务开机启动