====== openvpn 納入 Zabbix 監控 ======

===== @openvpn Server 設定程序 =====
  * 安裝相關的套件 <code sh>
yum install zabbix-sender nc
</code>
  * OpenVPN 設定啟用 management 功能
    * /etc/selinux/config 內要關閉 SELINUX=disabled
    * <code sh>vi /etc/openvpn/server.conf</code><file>
:
:
management 127.0.0.1 7505
</file><code sh>
service openvpn restart
</code><code sh>
netstat -na | grep 7505
</code><file>
[root@openvpn ~]# netstat -na | grep 7505
tcp        0      0 127.0.0.1:7505              0.0.0.0:*                   LISTEN
</file>
  * 加入 zabbix script
    * <code sh>
cd /usr/local/bin/
wget https://gist.githubusercontent.com/alice-xu/bf89c5f1174a3e793ff8/raw/316719f654f4b95b3277c4bc08f210c3fdce2bcd/zbx_functions
wget https://gist.githubusercontent.com/alice-xu/2cfd97766cf61c1d1ba4/raw/3d87c94db64fdcd60b072e2500d2e317aa7d3178/openvpn_stats.sh
chmod a+x openvpn_stats.sh
</code>
  * 測試 zabbix script - openvpn_stats.sh<code sh>
/usr/local/bin/openvpn_stats.sh
</code><file>
[root@openvpn bin]# /usr/local/bin/openvpn_stats.sh
SUCCESS: nclients=7,bytesin=204069,bytesout=208556
zabbix_sender [2861]: DEBUG: answer [{"response":"success","info":"processed: 0; failed: 3; total: 3; seconds spent: 0.000113"}]
info from server: "processed: 0; failed: 3; total: 3; seconds spent: 0.000113"
sent: 3; skipped: 0; total: 3
</file>
  * 設定每分鐘回報一次 <code sh>
vi /etc/crontab</code><file>
:
# Zabbix - openvpn
* * * * * root /usr/local/bin/openvpn_stats.sh > /tmp/openvpn_stats.log
:
</file><code sh>
service crond restart
</code>

==== @Zabbix Server 設定程序 =====
  * 下載 [[https://gist.githubusercontent.com/alice-xu/c0831c26f8ac86f51779/raw/197206b4e44461d872683c74860250a8e8a1196e/zabbix_custom_template_for_OpenVPN.xml|zabbix_custom_template_for_OpenVPN.xml]]
  * 將 zabbix_custom_template_for_OpenVPN.xml 匯入至 Zabbix Server → Configuration → Templates → Import

===== 參考網址 =====
  * https://gist.github.com/alice-xu
  * https://gist.github.com/alice-xu/2cfd97766cf61c1d1ba4
  * https://gist.github.com/alice-xu/bf89c5f1174a3e793ff8
  * https://gist.github.com/alice-xu/c0831c26f8ac86f51779
  * https://openvpn.net/index.php/open-source/documentation/howto.html#server

{{tag>openvpn zabbix}}