Posted in Linux/UNIX Server Computing

Install Zabbix Proxy on a Synology

Install Zabbix Proxy on a Synology

These small Synology servers are becoming more and more comprehensive, and for several years now have allowed the installation of various Docker packages and containers, thus increasing the possibilities with these servers. Today we will see how to install a Zabbix Proxy instance on them via Docker

We will install the package with the SQLite database, which will be easier to manage
We will configure the proxy to contact the Zabbix server (called an active proxy). In this configuration, it is not guaranteed that the Zabbix server will be able to query the proxy.

Creating the file containing the PSK

It is not possible to store the file containing the PSK directly in the container, so we store it in another share and mount it in the container.

To do this, create a new share, or create a new folder in an existing share, and create the file "zabbix_proxy_psk.psk". Put the PSK in it.

I recommend putting it in the "docker" share created when installing the package

Installing the Docker package

If you haven't already, you can install Docker Manager via Synology Package Center

Download the Zabbix-Proxy image and create the container

Once installed, you can open the container management package called Container manager. Then go to the Registry tab and search for "Zabbix-Proxy". Then click on the zabbix/zabbix-proxy-sqlite3 image, and finally on the Download button

Choose the latest image and confirm; the download will then start.

If you have an older version of Zabbix Server, you can set the version to download at this step

Once the download is complete you can go to the Container tab, and click on the Create button. Choose the previously downloaded image, check the Enable automatic restart box, and set the name you want for the container.

Mount the file created at the beginning in the Volume Settings section by clicking the Add File button. In the mount point, put it at the root, and read-only

Leave all options as default, and in the Environment section, remove the NMAP_PRIVILEGED setting by clicking the - button

Then add the settings below:

  • ZBX_HOSTNAME
    • Proxy server DNS name (must match the configuration made in the Zabbix server)
  • ZBX_PROXYMODE
    • Set to 0 to define that the proxy is active
  • ZBX_SERVER_HOST
    • IP address or hostname of the Zabbix server
  • ZBX_TLSCONNECT
    • Set "psk" to enable pre-shared key
  • ZBX_TLSPSKIDENTITY
    • Put the identity for the PSK here
  • ZBX_TLSPSKFILE
    • Put the path to the PSK here.
      In our example: "/zabbix_proxy_psk.psk"

Then validate with the Next button

In the next window, click the Done button, and the container will be created.

If you have any settings to change, you will need to duplicate the container. Once created, these settings cannot be changed.

Now all that's left is to add the proxy to the Zabbix Server, and that's it.