Redis is no longer opensource and has been forked/replaced by valkey (in terms of opensource). Valkey is largely a dropin replacement, but checkmk no longer recognises it. Redis/Valkey is a widely used component so I’m surprised to not see any search hits in this forum about it - has anyone got th…

If it is a real drop-in replacement then you only need to look at this agent script. Checkmk/checkmk/blob/master/agents/plugins/mk_redis #!/bin/bash # Copyright (C) 2019 Checkmk GmbH - License: GNU General Public License v2 # This file is part of Checkmk (https://checkmk.com). It is …

OK so it’s just the hardcoded process name that is the problem. I added a new REDIS_PROCNAME config variable and adapted mk_redis to use this variable and it then works as expected. main() { set -e -o pipefail REDIS_INSTANCES=() IS_DETECTED=false load_config if [[ "${REDIS_P…

in /etc/check_mk/mk_redis.cfg: REDIS_PROCNAME="valkey-server"

You may also need to change from redis-cli to valkey-cli (or create a symlink for the cli to work with mk_redis script)

I tried to improve mk_redis in PR #860 . We’ll see what will happen.

@martin.hirschvogel Maybe you can tell us if modifying the redis plugin is the right approach. This mimics how the MySQL plugin is handling MariaDB. An alternative would be copying the redis plugin and rename redis to valkey.

Given that Valkey and Redis will eventually diverge, I would recommend to create a dedicated agent plug-in. Otherwise changes at Valkey will impact Redis visa versa. See: 15336 FIX Add support for MariaDB 11 · Checkmk/checkmk@7ed5059 · GitHub Creates a lot of special case handling eventually if yo…

If we make a separate plugin for Valkey - because it is so close to Redis - should this still be a PR for inclusion in Checkmk or should this be in its own and live in Checkmk exchange?

I would put it into the Exchange. A new plug-in requires implementing the entire testing as well, so that we can guarantee that the plug-in really works now and in the future. That is beyond a typical pull request and only done for special cases (Hyper-V, Redfish, Nutanix).

I’ve started to fork out the Redis check to a standalone Valkey plugin: checkmk-extensions/valkey/src at valkey · mayrstefan/checkmk-extensions · GitHub Now I’m missing two files which are not part of the open source version: The bakery plugin The ruleset for the bakery I have access to an Enter…

Valkey support as well as redis?

General

martin.hirschvogel (Martin Hirschvogel) April 7, 2026, 9:08am 14

All bakery plug-ins are now available as GPLv2: