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How To Upgrade Zabbix Server From 3.2.6 To 3.4.1

Zabbix is very much needed to monitor all your servers. Both updates have been released a few days ago. So how do you make a lot of updates on your server? I have many post on Zabbix features. Such as
Now very important think how can I upgrade my Zabbix server 3.2.6 to 3.4.1
Step #01: First you can stop your Zabbix server.
root@zabbix-server:~# service zabbix-server stop
Step #02: Backup your Zabbix databases for risk free. But I can’t needed.
root@zabbix-server:~#  mysqldump -u root -p zabbix > zabbix.sql
Step #03: Add Zabbix source list for update repository.
root@zabbix-server:~# vim /etc/apt/source.list.d/zabbix.list
Insert below two lines
deb http://repo.zabbix.com/zabbix/3.4/ubuntu trusty main
deb-src http://repo.zabbix.com/zabbix/3.4/ubuntu trusty main
Step #04: Now download Zabbix released deb package via wget command.
root@zabbix-server:~#  wget http://repo.zabbix.com/zabbix/3.4/ubuntu/pool/main/z/zabbix-release/zabbix-release_3.4-1+trusty_all.deb
Step #05: Install downloaded packages via dpkg command.
root@zabbix-server:~# dpkg -i zabbix-release_3.4-1+trusty_all.deb
Now update your Zabbix server command
root@zabbix-server:~# apt-get update
Step #06: Then Zabbix main update command
root@zabbix-server:~# apt-get install –only-upgrade zabbix-server-mysql zabbix-agent zabbix-frontend-php
Press N 2 times for zabbix agent, apache.conf and server config file overwrite. Wait for few times when update completed.
Very important issue Zabbix server config file contains DB name, DB password and DB server name on localhost or 
Step #07: Open Zabbix server config file check this issue.
root@zabbix-server:~# vim /etc/zabbix/zabbix_server.conf
Step #08: All is ok then finally Zabbix server start.
 root@zabbix-server:~# service zabbix-server start
Now goto your browser and type http://server-ip/zabbix/
You can see some databases error. But don’t worry wait for few minutes then reload your browser.

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