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Getting Started with Monitoring

Checkmk Manual
Last updated: March 10 2016

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After installing Check_MK – with our appliances or provided distribution packages, and creating your first monitoring instance (site), it is time to add devices. In the following examples you will learn all about how to bring your site to life - we will assume that has been named mysite.

Tip: If you're not sure how to use a specific function, you can use, in addition to the book, the context-sensitive online help. You will find it at the top right, next to the Check_MK logo.

1. Login on the Web-GUI

The default login URL is http://HOSTNAME/mysite/ browser. With an installation using a package the user is always named omdadmin and has the preinstalled password omd. Starting at 1.4.0 the user will be cmkadmin and there will be a random password generated which should be noted. When using an appliance, you will use the name and password you created earlier.

2. Installing a monitoring agent on the monitoring server

As the first host, we will include the monitoring server itself as host. The agent (Check_MK Agent) is already installed on Check_MK appliances. When working with your own server you must install the agent. Select the option Monitoring Agents in the WATO · Configuration element in the sidebar.

Now select, depending on distribution, the RPM-, TGZ- or DEB-Package and install them on your monitoring server. This is achieved as usual with gdebi, yum install or zypper install.

3. Activating a server in monitoring

The management of the server and devices to be monitored can be found in Hosts:

Go to New host, enter localhost as the host name, and click on Save & go to Services. In the following listing add individual services with or all with .

On the screen that follows, click on the orange 2 Changes button which opens the next menu. There click on the Activate affected button, in order to activate the changes and to start the monitoring. On releases before 1.4.0 this button is called Activate Changes!.

That's it! The server will now be monitored with standard settings:

4. Activating additional servers and network devices

You can add additional devices to your monitoring in the same way. Here are a couple of tips:

  • To monitor Windows, use the MSI packages which automatically install the Check_MK Agent service.
  • You can also monitor SNMP devices (switches, etc.). For this, when configuring the host, in the Host Tags submenu, select the Agent Type option, and choose SNMP (Networking Device, Appliance) in the drop down menu. If your SNMP community is not public, then enter it in SNMP Community option.
  • If the host name cannot be translated via DNS, enter the IP Address by hand in the appropriate field.