How to Deploy Zabbix Server on Linode?

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To deploy Zabbix server on Linode, you can follow these steps:

  1. Choose a plan and create a new Linode instance on the Linode platform.
  2. Connect to your Linode instance using SSH.
  3. Update the system by running the following commands: sudo apt update sudo apt upgrade
  4. Install the required dependencies by executing the command: sudo apt install apache2 php-fpm php-mysql php-gd php-ldap php-xml libapache2-mod-php7.2
  5. Install and configure the MariaDB database server by executing the following commands: sudo apt install mariadb-server sudo mysql_secure_installation sudo mysql -u root -p Create a new database for Zabbix: CREATE DATABASE zabbix CHARACTER SET utf8 COLLATE utf8_bin; Create a new database user and grant privileges: GRANT ALL PRIVILEGES on zabbix.* to zabbix@localhost identified by 'password'; Flush the changes and exit: FLUSH PRIVILEGES; and EXIT;
  6. Download and install the Zabbix server and frontend packages by running the commands: wget https://repo.zabbix.com/zabbix/4.4/ubuntu/pool/main/z/zabbix-release/zabbix-release_4.4-1+xenial_all.deb sudo dpkg -i zabbix-release_4.4-1+xenial_all.deb sudo apt update sudo apt install zabbix-server-mysql zabbix-frontend-php
  7. Import the initial schema and data to the Zabbix database by executing: zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -u zabbix -p zabbix Enter the password when prompted.
  8. Configure the Zabbix server options by editing the configuration file: sudo nano /etc/zabbix/zabbix_server.conf Set the following parameters: DBHost=localhost DBName=zabbix DBUser=zabbix DBPassword=password
  9. Restart the Apache and Zabbix services: sudo systemctl restart apache2 sudo systemctl restart zabbix-server
  10. Access the Zabbix web interface by opening a browser and navigating to your Linode's IP address or domain name.
  11. Follow the Zabbix setup wizard to complete the installation, where you'll configure initial settings and provide the database details.
  12. After the installation is complete, you can log in to the Zabbix web interface using the default credentials:
  • Username: Admin
  • Password: zabbix


These steps should help you deploy Zabbix server on Linode successfully.

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How to create a Zabbix database and user on Linode?

To create a Zabbix database and user on Linode, you can follow these steps:

  1. Connect to your Linode server through SSH.
  2. Update the package index and upgrade installed packages by running the following command: sudo apt update && sudo apt upgrade
  3. Install the MySQL server: sudo apt install mysql-server During the installation, you'll be prompted to set a password for the MySQL "root" user. Make sure to remember this password as you'll need it later.
  4. Secure the MySQL installation by running the following command: sudo mysql_secure_installation Follow the prompts to set a secure root password and remove any default test databases.
  5. Log in to the MySQL server as the root user: sudo mysql -u root -p Enter the password you set during installation.
  6. Create a new database for Zabbix: CREATE DATABASE zabbix CHARACTER SET utf8 COLLATE utf8_bin;
  7. Create a new user for the Zabbix database: CREATE USER 'zabbix'@'localhost' IDENTIFIED BY 'password'; Replace 'password' with a strong password of your choice.
  8. Grant the necessary privileges to the Zabbix user: GRANT ALL PRIVILEGES ON zabbix.* TO 'zabbix'@'localhost'; FLUSH PRIVILEGES;
  9. Exit the MySQL prompt: EXIT;
  10. You have now created the Zabbix database and user on your Linode server. You can proceed with the Zabbix installation and configuration.


How to install PHP and its required modules for Zabbix server?

To install PHP and the required modules for Zabbix server, you can follow these steps:

  1. Update your package lists by running the following command: sudo apt update
  2. Install PHP and its required modules using the following command: sudo apt install php php-mbstring php-bcmath php-xml php-gd php-gettext
  3. Check the installed PHP version by running: php -v Verify that you have installed PHP successfully and note down the installed version.
  4. Configure PHP settings for Zabbix server by editing the PHP configuration file. Open the file /etc/php//apache2/php.ini in your preferred text editor. Replace with the installed PHP version noted in the previous step.
  5. Locate the following lines in the php.ini file and modify them as shown: max_execution_time = 300 memory_limit = 128M post_max_size = 16M upload_max_filesize = 2M These values are recommended for Zabbix server but can be adjusted based on your specific requirements.
  6. Save the changes and exit the text editor.
  7. Restart the Apache web server to apply the changes to PHP settings: sudo systemctl restart apache2


Once you have completed these steps, PHP and its required modules will be installed and configured for the Zabbix server.


How to configure email notifications in Zabbix server on Linode?

To configure email notifications in Zabbix server on a Linode, follow these steps:

  1. Install Zabbix: First, you need to install Zabbix server on your Linode. You can follow the official Zabbix documentation or use a one-click Zabbix image available in the Linode Marketplace.
  2. Configure Email Settings: Open the Zabbix server configuration file using a text editor:
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sudo nano /etc/zabbix/zabbix_server.conf


Find the following lines in the file and modify them according to your email server settings:

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# Email settings
#SMTP server
StartSMTP


Replace StartSMTP with the SMTP server address provided by your email service provider. Save the changes and exit the editor.

  1. Configure Email Notifications in Zabbix Web Interface:
  • Log in to the Zabbix web interface as an administrator.
  • Go to "Administration" > "Media Types" and click on "Email" to edit the email media type.
  • Fill in the required fields such as "SMTP server", "SMTP port", "SMTP helo", etc., with the details of your email server.
  • Scroll down and enter your email address in the "Username" field, and your email account password in the "Password" field.
  • Click on the "Test" button to ensure the email settings are correct. If the test is successful, you should receive a test email.
  1. Configure Users for Email Notifications:
  • Go to "Administration" > "Users" and select the user for whom you want to configure email notifications.
  • Click on the "Media" tab and then click on "Add" to create a new media entry.
  • From the "Type" dropdown, select "Email".
  • Fill in the email address in the "Send to" field and set the "Default" checkbox to enable this media for the user.
  • Save the changes.
  1. Configure Notification Triggers:
  • Go to "Configuration" > "Hosts" and select the host for which you want to configure email notifications.
  • Click on the "Triggers" tab and select the trigger for which you want to configure email notifications.
  • On the "Recovery operations" section, click on "Add" to add a new operation.
  • From the "Send to Users" dropdown, select the user for whom you configured email notifications.
  • Set the "Subject" and "Message" fields according to your requirements.
  • Save the changes.


Repeat steps 4 and 5 for all the users and triggers you want to configure email notifications for.


That's it! You have now successfully configured email notifications in Zabbix server on Linode. Whenever a trigger condition is met, an email notification will be sent to the specified email addresses.


What is the command to check the Zabbix server status on Linode?

To check the Zabbix server status on Linode, you can use the following command:

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sudo systemctl status zabbix-server


This command will provide you with the current status of the Zabbix server, including whether it is running or not, any error messages, and other relevant information.


What are the recommended Apache/Nginx web server settings for Zabbix on Linode?

The recommended Apache/Nginx web server settings for Zabbix on Linode are as follows:

  1. Apache Settings:
  • Disable unnecessary modules: Disable any Apache modules that are not needed for running Zabbix, as they can consume server resources. Some modules that can typically be disabled are mod_info, mod_userdir, mod_autoindex, and mod_status.
  • Adjust worker processes: Set the appropriate number of worker processes and threads based on your server's available resources. This can be done by modifying the StartServers, MinSpareServers, MaxSpareServers, and MaxClients directives in the Apache configuration file (usually located at /etc/httpd/conf/httpd.conf or /etc/apache2/apache2.conf).
  • Enable compression: Enable compression to reduce the size of the transferred data and improve response time. Add the following lines to the Apache configuration file: SetOutputFilter DEFLATE DeflateCompressionLevel 6
  1. Nginx Settings:
  • Adjust worker processes: Similar to Apache, set the appropriate number of worker processes based on your server's resources. This can be done by modifying the worker_processes directive in the nginx.conf file (usually located at /etc/nginx/nginx.conf).
  • Enable gzip compression: Enable gzip compression to compress the transferred data. Add the following lines to the nginx.conf file within the http block: gzip on; gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript; gzip_comp_level 6;
  • Configure timeouts: Adjust the timeouts to prevent idle connections from occupying server resources. Set the keepalive_timeout, send_timeout, and client_body_timeout directives according to your requirements.
  • Configure server blocks: Set up server blocks to define the configuration for various virtual hosts. Each server block should include the necessary directives for proxying requests to the Zabbix frontend.
  • Disable unnecessary modules: Disable any unnecessary nginx modules to reduce resource consumption. Some modules that can typically be disabled are autoindex, access, and status.


Remember to restart the Apache or Nginx service after making any configuration changes.


Please note that these recommendations may vary depending on your specific requirements, server resources, and traffic load. It is advisable to monitor your server's performance and adjust the settings accordingly.


How to configure the Zabbix repository on Ubuntu Linode?

To configure the Zabbix repository on Ubuntu Linode, you can follow these steps:

  1. Connect to your Linode server via SSH: ssh [email protected]
  2. Update the apt package list: sudo apt update
  3. Install the curl package for downloading files: sudo apt install curl -y
  4. Download the repository configuration file for Zabbix: curl -LO https://repo.zabbix.com/zabbix/5.4/ubuntu/pool/main/z/zabbix-release/zabbix-release_5.4-1+focal_all.deb
  5. Install the downloaded package to add the Zabbix repository: sudo dpkg -i zabbix-release_5.4-1+focal_all.deb
  6. Import the GPG key used for signing the Zabbix packages: sudo apt-key --keyring /etc/apt/trusted.gpg.d/zabbix-archive.gpg adv --recv-keys --keyserver keyserver.ubuntu.com 8F3DA4B5B62808C3
  7. Update the apt package list again: sudo apt update


You have now successfully configured the Zabbix repository on your Ubuntu Linode. You can proceed with the installation and setup of Zabbix by installing the required packages using sudo apt install zabbix-server-mysql zabbix-frontend-php zabbix-apache-conf zabbix-sql-scripts -y.

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