Problem

You receive error messages like the following.

Fetcher for host "$HOST" times out after X seconds

Background

Read this section about helper processes in Checkmk, to understand the following.

There are several reasons, why a fetcher might time out. Below is a listing of some typical reasons.

Plugins

Sometimes a plugin needs a very long time to provide data or will not provide data at all.
Depending on your Microcore timeout - which defaults to 60 seconds - you reach the timeout and receive the error message from above.

Solution

Find possible solutions below, based on the possible problem.

Plugins

Plugin never finishes

If the plugins throws errors or never finishes, you need to learn how to fix this.

Plugin finishes after a long time

In case the plugin finished, but needs longer than the Microcore timeout, you can run the plugin asynchronously.

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