title: Version 3.0.0-rc1 Released
author: Lorenz Kästle
date: 2025-12-03
---

The Monitoring Plugins Development Team announces version 3.0.0-rc1 of
the Monitoring Plugins! 
This release is different in several regards to previous releases.
Due the a significant refactoring and the unintented side effect this
may have, the "real" release will be following release candidates which
are intented to for early adapters and testing.
<end-of-teaser>

The core parts of this release are significant changes to the C part of this
project, which should be mostly internal and not change the results in a
significant way (meaning the input parameters mostly stay as they are and the
exit code should remain the same if the parameters are the same in the old
version and context did not change).
The reality is, that big changes have
unintented consequences which are not covered in the test cases or some
consequences were not in our scope at all.
For the list of notable changes in this release, see below.

You can get the tarball from our [download page][download].

### General changes
* In the C part of the project
  * Heavy refactoring to simplify and unify the code base
  * Introduction of a generalized output mechanism for most plugins
  * Standardized code formatting via `clang-format`

### Specific changes 
#### check_curl
`check_curl` received a lot of changes which improve the documentation and
fix several bugs.
It is also not considered experimental anymore.

Additionaly `check_curl` can now be configured to handle cookies internally
without saving cookies to the filesystem.

#### check_http
`check_http` is now considered deprecated and will not receive attention any
more. It is replaced by `check_curl`

#### check_snmp
`check_snmp` does not execute `snmpget` or `snmpgetnext` anymore but executes
the net-snmp calls natively now.

#### check_nwstat
`check_nwstat` was removed, due to its perceived insignificance in the current
IT world. This reduces the maintenance load and ressource consumption in
general.

#### check_by_ssh
`check_by_ssh` ignores output on `stderr` by default now. This should
avoid false positives for warnings by the OpenSSH client (especially
about the server missing Post-Quantum cryptography.

#### check_dns
`check_dns` now ignores CNAMES in reverse DNS mode.

#### check_fping
If during compilation `fping` 5.2, 5.3 or higher are present, `check_fping` 
will be able to use new options which were introduced with these versions.
These options are (equivalent to the ones with the same name in `fping`)
`--fwmark`, `--icmp-timestamp` and `--check-source`.
The older flags `--dontfrag` and `--random` were also added.

Also the `-4` and `-6` flags may not have worked as intented and should be
fixed now.

#### check_mysql
`check_mysql` should now be able to correctly detect whether a replica is
attached and working correctly.
Changes were necessary here to adapt to changes in the naming convention in
MySQL.

[download]: /download.html

<!--% # vim:set filetype=markdown textwidth=78 joinspaces expandtab: # %-->