Install Zabbix Agent on Ubuntu 22.04/Debian 11

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In this tutorial, you will learn how to easily install Zabbix agent on Ubuntu 22.04/Debian 11.

Install Zabbix Agent on Ubuntu 22.04/Debian 11

Zabbix agent can be used to poll various system metrics as outlined below and push them to Zabbix server for visualization.

NetworkPackets/bytes transferred
Errors/dropped packets
Collisions
CPULoad average
CPU idle/usage
CPU utilization data per individual process
MemoryFree/used memory
Swap/pagefile utilization
DiskSpace free/used
Read and write I/O
ServiceProcess status
Process memory usage
Service status (ssh, ntp, ldap, smtp, ftp, http, pop, nntp, imap)
Windows service status
DNS resolution
TCP connectivity
TCP response time
FileFile size/time
File exists
Checksum
MD5 hash
RegExp search
LogText log
Windows eventlog
OtherSystem uptime
System time
Users connected
Performance counter (Windows)
Zabbix Agent capabilities

Install Zabbix agent on Ubuntu 22.04

  • Install Zabbix DEB Repositories on Ubuntu 22.04;
wget https://repo.zabbix.com/zabbix/6.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_6.0-2+ubuntu22.04_all.deb
dpkg -i zabbix-release_6.0-2+ubuntu22.04_all.deb
  • Run system package cache update and install Zabbix agent on Ubuntu 22.04
apt update
apt install zabbix-agent

Install Zabbix agent on Debian 11

  • Install Zabbix DEB Repositories on Debian 11;
wget https://repo.zabbix.com/zabbix/6.0/debian/pool/main/z/zabbix-release/zabbix-release_6.0-1+debian11_all.deb
dpkg -i zabbix-release_6.0-1+debian11_all.deb
  • Install Zabbix Agent
apt update
apt install zabbix-agent

Configure Zabbix Agent

Once the installation is done, configure Zabbix agent to be able to communicate with the Zabbix server.

vim /etc/zabbix/zabbix_agentd.conf
The only change we make here is to set Zabbix server IP address for passive and active checks, and just hostname.
...
Server=192.168.60.22             ## IP for Zabbix Server
...
ServerActive=192.168.60.22       
...
Hostname=jellyfish

Save and exit the file.

Ensure the agent hostname is resolvable to an IP address that it will use to communicate with the Zabbix server and not a loopback address. Exact Hostname will be required while adding hosts to the Zabbix server for monitoring.

If no DNS in place, use host file;

ping jellyfish -c 4
PING jellyfish (192.168.60.23) 56(84) bytes of data.
64 bytes from jellyfish (192.168.60.23): icmp_seq=1 ttl=64 time=0.030 ms
64 bytes from jellyfish (192.168.60.23): icmp_seq=2 ttl=64 time=0.092 ms
64 bytes from jellyfish (192.168.60.23): icmp_seq=3 ttl=64 time=0.035 ms
64 bytes from jellyfish (192.168.60.23): icmp_seq=4 ttl=64 time=0.071 ms

--- jellyfish ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3028ms
rtt min/avg/max/mdev = 0.030/0.057/0.092/0.025 ms

Running Zabbix Service on Ubuntu 22.04/Debian 11

Start and enable Zabbix service on Ubuntu 22.04/Debian 11 to run on boot;

systemctl enable --now zabbix-agent

Check the status;

systemctl status zabbix-agent
● zabbix-agent.service - Zabbix Agent
     Loaded: loaded (/lib/systemd/system/zabbix-agent.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2022-05-14 22:26:15 EAT; 7min ago
   Main PID: 6340 (zabbix_agentd)
      Tasks: 6 (limit: 1693)
     Memory: 5.7M
        CPU: 190ms
     CGroup: /system.slice/zabbix-agent.service
             ├─6340 /usr/sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf
             ├─6341 /usr/sbin/zabbix_agentd: collector [idle 1 sec]
             ├─6342 /usr/sbin/zabbix_agentd: listener #1 [waiting for connection]
             ├─6343 /usr/sbin/zabbix_agentd: listener #2 [waiting for connection]
             ├─6344 /usr/sbin/zabbix_agentd: listener #3 [waiting for connection]
             └─6345 /usr/sbin/zabbix_agentd: active checks #1 [idle 1 sec]

May 14 22:26:13 debian11 systemd[1]: Starting Zabbix Agent...
May 14 22:26:15 debian11 systemd[1]: Started Zabbix Agent.

Zabbix Agent listens on port 10050/TCP.

ss -altnp | grep 10050
LISTEN 0      4096         0.0.0.0:10050      0.0.0.0:*    users:(("zabbix_agentd",pid=2412,fd=4),("zabbix_agentd",pid=2411,fd=4),("zabbix_agentd",pid=2410,fd=4),("zabbix_agentd",pid=2409,fd=4),("zabbix_agentd",pid=2408,fd=4),("zabbix_agentd",pid=2407,fd=4))
LISTEN 0      4096            [::]:10050         [::]:*    users:(("zabbix_agentd",pid=2412,fd=5),("zabbix_agentd",pid=2411,fd=5),("zabbix_agentd",pid=2410,fd=5),("zabbix_agentd",pid=2409,fd=5),("zabbix_agentd",pid=2408,fd=5),("zabbix_agentd",pid=2407,fd=5))

The server should be able to connect to the agent via this port. Hence, open this port on firewall;

ufw allow from <zabbix-server-IP> to any port 10050 proto tcp comment "Allow Zabbix Server"

Also, ensure that you can connect to Zabbix server on port 10051/tcp.

Monitor the Host from Zabbix Server

You can now add the host to the Zabbix server and start monitoring.

See the link below on how to add and monitor Linux hosts using Zabbix server.

That concludes our guide on how to install Zabbix agent on Ubuntu 22.04/Debian 11 systems for monitoring.

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