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Copy Zabbix Server From One Server to Another

Video Lecture

Description

Move Zabbix Server from One Cloud Provider to Another.

In my case, it was Digital Ocean to Hetzner

My Zabbix Server configuration is using Ubuntu 18.04 and MySQL

TODO:

  • Reinstall Zabbix Server Code (server processes and PHP front end code)
  • Database (MySQL, Create a SQL dump file and copy to new server)
  • Custom Scripts (Alertscripts, and CheckSSL script)
  • Repoint the domains A name record to the new IP from the new cloud provider
  • Get a new SSL cert
  • Reinstall Postfix

Reinstall Zabbix Server

Server Processes

wget https://repo.zabbix.com/zabbix/4.4/ubuntu/pool/main/z/zabbix-release/zabbix-release_4.4-1+bionic_all.deb
dpkg -i zabbix-release_4.4-1+bionic_all.deb
apt update

Front End PHP

apt -y install zabbix-server-mysql zabbix-frontend-php zabbix-apache-conf zabbix-agent

Configs

sudo nano /etc/zabbix/zabbix_server.conf

In server config file Set,

DBPassword=password

sudo nano /etc/zabbix/apache.conf

In apache config change to your region. I changed Riga to London,

php_value date.timezone Europe/Riga

Restart and Enable After Reboot

$ systemctl restart zabbix-server zabbix-agent apache2 $ systemctl enable zabbix-server zabbix-agent apache2

Copy Custom Scripts

Copy the secret.psk, and checkssl.sh scripts. Give the checkssl.sh script execute permissions (0755)

sudo chmod a+x checkssl.sh

Copy alert scripts sendsms.sh and slackalert.sh anb give execute permissions (0755)

sudo chmod a+x sendsms.sh
sudo chmod a+x slackalert.sh

Setup and Copy Database

On new server ensure mysql is already installed.

sudo apt-get install mysql-server

On old server create a snapshot of the DB.

mysqldump --quick zabbix | gzip > zabbix.gz
mysqladmin -uroot create zabbix
gunzip < zabbix.gz | mysql -uroot zabbix

Copy the file zabbix.gz to new server

Create User on new Server

mysql

CREATE USER 'zabbix'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON zabbix.* TO 'zabbix'@'localhost';
FLUSH PRIVILEGES;
QUIT;

Repoint Domain Name

Log onto your domain name provider and update your domain name A name record to the new ip address.

Install SSL Certificate

sudo apt-get install certbot
sudo apt-get install python-certbot-apache
sudo certbot --apache -d zabbix.seanwasere.com

Install Postfix

sudo apt install mailutils
sudo nano /etc/postfix/main.cf

Change value

...
inet_interfaces = loopback-only
inet_protocols = ipv4
...

Restart

sudo service postfix reload

Reconfigure the Zabbix Agent which is also running on the new server.

sudo nano /etc/zabbix/zabbix_agentd.conf

Since I also use scripts, I need to enable remote commands, and to update the agent to require PSK encryption, and then restart.

sudo service zabbix-agent restart

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