Werk #13170: check_dns: added option to use default DNS server

Component

Checks & agents

Title

check_dns: added option to use default DNS server

Date

Oct 27, 2021

Level

Trivial Change

Class

New Feature

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.1.0b1	Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
2.0.0p14	Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

If no DNS server is specified the error message "CRITICAL - Plugin timed out while executing system call" could have been reported. The reason for this error is that the check_dns option "-s" is used with the hostname as DNS server. The host might not be a DNS server and a timeout occurs.

The new option "Use default DNS server" will omit the option "-s" for check_dns. In this case the default DNS server of the checkmk server will be used and no timeout occurs any more.

To the list of all Werks