Install Zabbix Agent2 on Centos 7

Install Zabbix Agent2 on Centos 7: My Guide

ByMark Posted on Updated on

Zabbix is a great tool to watch and track how well your servers are doing. I’ll guide you step by step to put Zabbix Agent2 on Centos 7. You’ll learn to watch your servers better. You can even check on docker containers for more details.

First, we must add the Zabbix repository to our Centos 7. This makes it easy to get Zabbix-agent2 from the repository. Not sure how? Just run these commands on Debian 10:

“`
$ sudo wget rpm -Uvh https://repo.zabbix.com/zabbix/6.4/rhel/7/x86_64/zabbix-release-6.4-1.el7.noarch.rpm
$ sudo rpm -Uvh zabbix-release-6.4-1.el7.noarch.rpm
“`

Now that the repository is in, we install Zabbix Agent2. Run this command:

“`
$ sudo yum install zabbix-agent2
“`

To set up Zabbix Agent2, we have to tweak the zabbix_agent2.conf file. Open it with any text editor:

“`
$ sudo vi /etc/zabbix/zabbix_agent2.conf
“`

After changing the configuration, make sure to restart the Zabbix Agent2 service:

“`
$ sudo systemctl restart zabbix-agent
“`
or
“`
$ sudo service zabbix-agent restart
“`

To actually start monitoring with Zabbix Agent2, the server needs to join Zabbix. Here’s how:

1. Log in to Zabbix on the web.
2. Click on Configuration > Hosts, then “Create host”.
3. Enter the Centos 7 server’s IP .
4. Hit “Add” to finish.

If Zabbix Agent2 isn’t working right, fix it by:

1. Making sure Zabbix Agent2 is on.
2. Checking that ports like 10050/tcp are not blocked.
3. Telnet the Zabbix server to test the connection.
4. Reading the Zabbix Agent2 logs for hints.

Key Takeaways:

  • Zabbix Agent2 helps you keep an eye on server health and performance.
  • Putting Zabbix Agent2 on Centos 7 means adding its repository, installing the agent, and setting it up.
  • To make changes, always restart the Zabbix Agent2 service.
  • Monitoring starts after adding your server to Zabbix.
  • Troubleshooting means checking on the agent service, ports, connections, and logs.

Add Zabbix Repository to Known Repositories

Before installing Zabbix Agent2 on CentOS 7, let’s add its repository. This allows installing Zabbix-agent2 package from the repository. Follow these steps to add the Zabbix repository:

    1. For RHEL-based systems, open the terminal and run the following command:


1
rpm -Uvh https://repo.zabbix.com/zabbix/6.4/rhel/7/x86_64/zabbix-release-6.4-1.el7.noarch.rpm

Once you’ve run these commands, Zabbix repository’s added to your system. Now you can install Zabbix Agent2 on CentOS 7.

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With the Zabbix repository added, the next step is to install Zabbix Agent2.

Install Zabbix Agent2

Now we’re ready to install Zabbix Agent2 on our Centos 7. Just follow these easy steps:

  1. Open your Centos 7 terminal.
  2. Type in this command to start the Zabbix Agent2 install:


1
sudo yum install zabbix-agent2 -y

Let the installation finish.

Configure Zabbix Agent2 service

After setting up, it’s time to configure the Zabbix Agent2 service. Open the config file with this command:



1
sudo nano /etc/zabbix/zabbix_agent2.conf

Now, adjust the settings in the configuration file as needed.

Start Zabbix Agent2 service

After setting up, save and close the editor. Start Zabbix Agent2 with this command:



1
sudo systemctl start zabbix-agent2

Zabbix Agent2 is now running on your Centos 7.

Verify Zabbix Agent2 installation

Check if Zabbix Agent2 is set up right by using this command:



1
sudo systemctl status zabbix-agent2
Component Status
Zabbix Agent2 Installed
Configuration Completed
Service Running

Configure Zabbix Agent2

After installing Zabbix Agent2 on your Centos 7, the next step is setting it up for the best use. You have to tweak the

1
zabbix_agent2.conf

file. This file holds key info on how the agent talks to the Zabbix server and what it gathers.

First, use a text editor to open the

1
zabbix_agent2.conf

file. The file’s spot could change but it’s usually in the

1
/etc/zabbix

folder. Find and open it.

Inside the file, you’ll see settings to change to fit your needs. For example, the

1
Server

setting says where the agent sends data. You should update this with Zabbix server info.

Other than

1
Server

, there are options like

1
Hostname

and

1
Timeout

.

1
Hostname

tells what name the server uses for the agent. You can also set how long the agent waits for a server response with

1
Timeout

.

When you’re done editing

1
zabbix_agent2.conf

, remember to save and close the file. Now, restart Zabbix Agent2 so the changes can take effect.

To restart, use this command:

1
systemctl restart zabbix-agent2

After the restart, the agent will follow the new settings. You can keep an eye on the agent’s work by looking at the

1
zabbix_agentd.log

file.

Properly setting up Zabbix Agent2 on your Centos 7 helps it collect and send server info correctly. This way, you can keep your server environment in top shape.

Configuration Parameter Description
Server The hostname or IP address of the Zabbix server
Hostname The hostname used to identify the agent on the Zabbix server
Timeout The maximum time the agent will wait for a server response

Restart Zabbix Agent2

After changing the Zabbix agent config file, restart the Zabbix Agent2 service. This action is key to making your new settings work. By restarting, the agent can talk to the Zabbix server with the updated rules.

On CentOS 7, to restart Zabbix Agent2, type this command:

1
systemctl restart zabbix-agent2.service

This command power cycles the Zabbix Agent2 service. It halts then starts again with the fresh settings. Use it every time your config file changes.

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Restarting Zabbix Agent2 links the agent back to the Zabbix server. Now, it begins sending current monitoring news. This action keeps the server in the know about your host’s latest status.

A Zabbix Agent2 restart makes sure your monitoring system is in shape. It confirms all config tweaks are in place. This step is critical for correct monitoring on CentOS 7 with Zabbix.

Centos 7 Zabbix Agent configuration

To dive deeper into Zabbix Agent2’s core, Alexey Petrov’s blog post is a great read. It explains new features and updates in detail. It’s a solid resource for understanding Zabbix Agent2 better.

Add Host to Zabbix Interface

You’ve set up the Zabbix Agent2 on your Centos 7 server. Now let’s add your server to Zabbix.

Step 1: Login to the Zabbix Admin Site

First, log in to Zabbix’s admin page with your credentials. You’ll then see the Zabbix dashboard.

Step 2: Access the Host Configuration

On the dashboard, go to “Configuration” and pick “Hosts” from the drop-down. You’ll land on the host settings page.

Step 3: Create a New Host

Next, press “Create host” at the top right to make a new host. A form will pop up for you to fill.

Step 4: Provide Host Details

Complete the host form with these details:

  • Hostname: Enter your server’s hostname.
  • Visible name: Give a name for easy recognition in Zabbix.
  • Group selection: Choose the right group for your server.
  • Interfaces setup: Set up your network settings like IP address and communication port.

Step 5: Apply Monitoring Templates

Scroll down to “Templates” in the form. Choose “Template OS Linux by Zabbix agent active” from the Linux templates. This one is for Linux servers with Zabbix Agent2 setup.

Step 6: Save and Monitor

Now, after adding details and templates, hit “Add” at the bottom to save. Your new host will join the list.

Zabbix will start pulling data from your server soon. You can now watch your server’s performance, see key data, and set alerts to keep it running smoothly.

Zabbix Monitoring on Centos 7
Step 1: Login to the Zabbix Admin Site
Step 2: Access the Host Configuration
Step 3: Create a New Host
Step 4: Provide Host Details
Step 5: Apply Monitoring Templates
Step 6: Save and Monitor

 

Great job! You’ve added your server to Zabbix. Now you can keep an eye on important metrics and maintain your system’s performance. Use Zabbix Agent2 to actively solve any problems.

Troubleshooting

Having trouble with Zabbix Agent2 on Centos 7? Don’t worry. There are steps to help you fix it. You’ll have your Zabbix Agent2 running smoothly soon.

1. Check Zabbix Agent2 Status

First, check your Zabbix Agent2’s status. Run this terminal command:

1
systemctl status zabbix-agent2

If the status is ‘inactive’ or ‘failed’, you need to look deeper to find the issue.

2. Verify Open Ports

Make sure Zabbix Agent2 can talk to the Zabbix Server. Usually, you need port 10050/tcp open. Check open ports like this:

1
sudo firewall-cmd --list-ports

If you don’t see port 10050/tcp, add it to your firewall settings.

3. Check Zabbix Agent2 Configuration

Check the Zabbix Agent2 configuration by looking at the

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1
zabbix_agent2.conf

file. Use a text editor to open it:

1
sudo nano /etc/zabbix/zabbix_agent2.conf

Make sure the

1
Server

setting has your Zabbix Server’s IP address or name. Also, check that

1
Hostname

has the right name for your machine.

4. Restart Zabbix Agent2

If you changed the Zabbix Agent2 settings, restart it. Use this command:

1
sudo systemctl restart zabbix-agent2

Make sure it restarts without any issues.

5. Review Zabbix Agent2 Logs

If your issue persists, check the Zabbix Agent2 logs. Look for them in

1
/var/log/zabbix

. Open the log file with a text editor:

1
sudo nano /var/log/zabbix/zabbix_agent2.log

Check for errors or warnings to pinpoint the problem.

If you still can’t solve the problem, check the Zabbix documentation or ask the Zabbix community for help.

Zabbix Agent2 Troubleshooting Checklist
✓ Check Zabbix Agent2 status using “systemctl status zabbix-agent2”
✓ Verify open ports, especially port 10050/tcp
✓ Review Zabbix Agent2 configuration in “zabbix_agent2.conf”
✓ Restart Zabbix Agent2 service with “systemctl restart zabbix-agent2”
✓ Inspect Zabbix Agent2 logs in “/var/log/zabbix/zabbix_agent2.log”

Conclusion

You’ve now set up Zabbix Agent2 on your CentOS 7 server. This lets you watch your server’s performance closely, including docker containers. You get to see real-time data on how your servers, virtual machines, and more are doing.

This guide has helped you improve your server monitoring. By following the steps, you installed Zabbix server, web frontend, and the agent. You figured out how to make a MySQL database, set up files, adjust PHP settings, and start Zabbix.

It’s a good idea to add a TLS/SSL certificate for Zabbix’s safety. This keeps your server and data safe from outsiders.

Now, with Zabbix Agent2 and what you’ve learned, you can look after your CentOS 7 server well. Use Zabbix to watch how your network and apps are running. Keep everything in great shape with Zabbix’s help.

FAQ

How do I add the Zabbix repository to my Centos 7 system?

Run these commands to add the Zabbix repository:

What command should I use to install Zabbix Agent2 on Centos 7?

Use this command to install Zabbix Agent2:

How do I configure Zabbix Agent2 on Centos 7?

To set up Zabbix Agent2, edit the zabbix_agent2.conf file with a text editor.

How can I restart the Zabbix Agent2 service?

To start the Zabbix Agent2 service again, run this command:

How do I add a host to the Zabbix interface for monitoring?

Adding a host to the Zabbix interface is easy. Just follow these steps:

What should I do if I encounter issues during the installation or configuration process?

If you face problems, troubleshoot them with these steps:

What are the benefits of using Zabbix Agent2 on Centos 7?

Zabbix Agent2 lets you keep an eye on your Centos 7 server. This includes monitoring docker containers.

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