mediawiki needs 6.8.23 and I needed to change this

[hboetes]

For the mediawiki version we are using elasticsearch 6.8.23 is needed https://github.com/voxpupuli/puppet-elasticsearch/blob/master/REFERENCE.md#version

So I installed like this:

  class { 'elasticsearch':
    version           => '6.8.23',
    manage_repo       => false,
    autoupgrade       => true,
    restart_on_change => true
  }

Then had to update the service file to make it work:

#  diff -u /lib/systemd/system/elasticsearch.service /etc/systemd/system/elasticsearch.service
--- /lib/systemd/system/elasticsearch.service	2024-03-08 13:14:01.696493107 +0100
+++ /etc/systemd/system/elasticsearch.service	2024-03-08 13:01:10.995586422 +0100
@@ -10,6 +10,7 @@
 Environment=DATA_DIR=/var/lib/elasticsearch
 Environment=LOG_DIR=/var/log/elasticsearch
 Environment=PID_DIR=/var/run/elasticsearch
+Environment=ES_PATH_CONF=/etc/elasticsearch
 EnvironmentFile=-/etc/default/elasticsearch
 
 WorkingDirectory=/usr/share/elasticsearch
@@ -19,12 +20,7 @@
 
 ExecStartPre=/usr/share/elasticsearch/bin/elasticsearch-systemd-pre-exec
 
-ExecStart=/usr/share/elasticsearch/bin/elasticsearch \
-                                                -p ${PID_DIR}/elasticsearch.pid \
-                                                --quiet \
-                                                -Edefault.path.logs=${LOG_DIR} \
-                                                -Edefault.path.data=${DATA_DIR} \
-                                                -Edefault.path.conf=${CONF_DIR}
+ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/elasticsearch.pid
 
 # StandardOutput is configured to redirect to journalctl since
 # some error messages may be logged in standard output before
@@ -39,7 +35,7 @@
 LimitNOFILE=65536
 
 # Specifies the maximum number of processes
-LimitNPROC=2048
+LimitNPROC=4096
 
 # Specifies the maximum size of virtual memory
 LimitAS=infinity

I noticed the service file in /lib wasn't managed by puppet, so perhaps it may be interesting to add that to the config.