Merge ~axino/ubuntu-mirror-charm/+git/ubuntu-mirror-charm:axino into ubuntu-mirror-charm:master

[Junien F]

switch back to mpm_event, we've been using that in production for a while now

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

This merge proposal is being monitored by mergebot. Change the status to Approved to merge.

[🤖 Canonical IS Review Bot (canonical-is-reviewbot)]

Proxy approval for ballot

review: Approve

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

Change successfully merged at revision 46e4ebb6f3c9ca4770a89f1c011523d6dc4dcedc

diff --git a/hooks/hooks.py b/hooks/hooks.py
index e39276b..444fa52 100755
--- a/hooks/hooks.py
+++ b/hooks/hooks.py
@@ -672,12 +672,8 @@ def configure_apache_mpm(conf, hostname):  # noqa: C901
         status_set('blocked', error_message)
         sys.exit(1)
 
-    # Revert back to MPM worker for now:
-    #   https://bz.apache.org/bugzilla/show_bug.cgi?id=53555
-    # mpm_file = "/etc/apache2/mods-available/mpm_event.conf"
-    # mpm_module = "mpm_event"
-    mpm_file = "/etc/apache2/mods-available/mpm_worker.conf"
-    mpm_module = "mpm_worker"
+    mpm_file = "/etc/apache2/mods-available/mpm_event.conf"
+    mpm_module = "mpm_event"
     current_mpm_module = 'mpm_{}'.format(check_output(["/usr/sbin/a2query", "-M"]))
     if current_mpm_module == 'mpm_None':
         log("CHARM: Query for existing module failed, setting to {}"