cmk-monitor-*: avoid creation of user session

When using `su`in a systemd service it triggers the creation of
a user session in systemd, which causes audio services (e.g. pipewire)
to be started.
By using `sudo` the created of a `systemd --user` process is avoided
and hence to audio services are started.

CMK-21932

Change-Id: If03ff9c06e057e8f9d23e5f474d05bcaa7b86505

Author: mo-ki

agents/check_mk_agent.linux

@@ -1230,11 +1230,8 @@ section_omd() {
         ${MK_RUN_SYNC_PARTS} || return
 
         for sitedir in /omd/sites/*; do
-            site_version="$(basename "$(realpath "${sitedir}/version")")"
-            site=${sitedir#/omd/sites/}
-            for script in /omd/versions/"${site_version}"/bin/cmk-monitor-*; do
-                [ -e "${script}" ] && [ "$(stat "${script}" -c '%U')" = "root" ] && sudo_as_root OMD_SITE="${site}" "${script}"
-            done
+            site="${sitedir#/omd/sites/}"
+            find -L "/omd/sites/${site}/bin" -type f -user "root" -name "cmk-monitor-*" -exec sudo --non-interactive --user="${site}" {} \;
         done
 
         echo '<<<mknotifyd:sep(0)>>>'

bin/cmk-monitor-broker

@@ -3,12 +3,6 @@
 # This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
 # conditions defined in the file COPYING, which is part of this source code package.
 
-[ "$(whoami)" = "root" ] && {
-    # Don't accept further arguments when called as root, since we would put them after an 'su' unseen.
-    su - "${OMD_SITE:?}" -c "${0}"
-    exit
-}
-
 MANAGEMENT_API_PORT="$(grep "^CONFIG_RABBITMQ_MANAGEMENT_PORT=" ~/etc/omd/site.conf | cut -d"'" -f2)"
 MONITORING_USER="cmk-internal-monitoring"
 MONITORING_ROLE="monitoring"