Install ZABBIX agent on Linux (CentOS)
This was tested on Centos5, but should just about work on any similar OS.
1. Install the Zabbix-Agent on the Linux server that you want to monitor.
#
# tar -xzvf zabbix-1.6.2.tar.gz
# cd zabbix-1.6.2 #the version should be suit for your current software
#./configure --enable-agent --prefix=/usr/local/zabbix # make install
Possible errors = error: no acceptable C compiler found in $PATH
The solution depends on what has already been installed on the server. Usually ‘yum install gcc’ is all that is required.
[*]yum install gcc
[*]Still not working? Try ‘yum update yum’, then ‘yum remove gcc gcc.x86_64’ then ‘yum install gcc’. It should work!
2. Configure the Zabbix-Agent.
First we need to add the zabbix user.
#
# adduser zabbix
Add the zabbix agent ports to your /etc/services file.
#
# echo ‘zabbix_agent 10050/tcp’ >> /etc/services # echo ‘zabbix_trap 10051/tcp’ >> /etc/services
#
Copy the sample configs to /etc/zabbix for the agentd.
#
# mkdir /etc/zabbix
# cp misc/conf/zabbix_agentd.conf /etc/zabbix
#
Now go to /etc/zabbix/zabbix_agentd.conf, and edit:
Server=192.168.0.69Hostname=Mail_Server
Next, configure /etc/init.d/
Note: If you are not using a redhat OS, look in zabbix-1.6.2/misc/init.d/ and choose a more appropriate directory before executing the following command.
#
# cp misc/init.d/redhat/zabbix_agentd_ctl /etc/init.d/zabbix_agentd
#
Now go to /etc/init.d/zabbix_agentd, and edit
Just below #!/bin/sh: add these two lines, including the # hash marks.
# chkconfig: 345 95 95 # description: Zabbix Agentd
Then edit these two lines, to read as shown below:
BASEDIR=/usr/local/zabbix ZABBIX_AGENTD=$BASEDIR/sbin/zabbix_agentd
Configure automatic starting and stopping of services.
#
# chkconfig --level 345 zabbix_agentd on
#
Next, edit /etc/hosts.allow on the Linux agent to allow the Zabbix Server IP address.
3. Dealing with the Firewall.
If using Webmin, you need to insert a line such as this:
If protocol is TCP and source is <IPofZabbix-Server> and destination port is 10050
This will result in a line in iptables as follows:
ACCEPT tcp – <IPofZabbix-Server> 0.0.0.0/0 tcp dpt: 10050
If you don’t have Webmin, you may need to ‘man iptables’ to check the commands necessary to insert that line in your iptables.
Almost there now:
#
# /etc/init.d/zabbix_agentd start
#
Check the zabbix_agentd log to see if all is okay!
# cat /tmp/zabbix_agentd.log 5392:20090202:115848 zabbix_agentd started. ZABBIX 1.6.2. 5393:20090202:115848 zabbix_agentd collector started 5394:20090202:115848 zabbix_agentd listener started 5395:20090202:115848 zabbix_agentd listener started 5396:20090202:115848 zabbix_agentd listener started 5397:20090202:115848 zabbix_agentd active check started
Log looks ok!
Now go back to the Zabbix Server web-interface and enable the Mail_Server(by default is zabbix_server) host. After a few moments you should be able to see data in Monitoring –> Latest data.
Before enabling the Triggers, check Configuration –> Items and disable any item that is shown as ‘Unsupported’, and any item that you don’t need (e.g. FTP server, etc.).
PS: If the zabbix server still cannot monitor the host, you should check out the outgoing IPaddr in you zabbix_server.conf.
cited from: http://www.zabbix.com/wiki/howto/monitor/os/linux/agentinstallonlinux and made a little revision
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