copr: enable multiprocessor on lighttpd

This will utilize more cores for lighttpd, but because lighttpd does not synchronize
writing to logs, we have to pipe it to cronolog.

roles/copr/backend/files/lighttpd/access_log.conf

@@ -0,0 +1,28 @@
+#######################################################################
+##
+## Corresponding documentation:
+##
+## https://redmine.lighttpd.net/projects/lighttpd/wiki/Docs_ModAccesslog
+##
+server.modules += ( "mod_accesslog" )
+
+##
+## Default access log.
+##
+#accesslog.filename          = log_root + "/access.log"
+accesslog.filename = "|/usr/sbin/cronolog /var/log/lighttpd/access.log"
+
+##
+## The default format produces CLF compatible output.
+## For available parameters see access.txt
+##
+#accesslog.format = "%h %l %u %t \"%r\" %b %>s \"%{User-Agent}i\" \"%{Referer}i\""
+
+##
+## If you want to log to syslog you have to unset the
+## accesslog.use-syslog setting and uncomment the next line.
+##
+#accesslog.use-syslog       = "enable"
+
+#
+#######################################################################

roles/copr/backend/files/lighttpd/lighttpd.conf

@@ -483,3 +483,5 @@ $HTTP["url"] =~ "^/archive/spacewalk/($|/)" {
   dir-listing.activate = "disable"
   index-file.names   = ( "index.html" )
 }
+# make sure logging use cronolog
+server.max-worker = 6 # this may break many things

roles/copr/backend/tasks/main.yml

@@ -21,6 +21,7 @@
   - python2-neutronclient
   - python2-keystoneclient
   - php-cli
+  - cronolog
 
 # disable this in favor of excluding it in /etc/dnf/dnf.conf. 
 # https://github.com/ansible/ansible/issues/33187
@@ -78,6 +79,11 @@
   copy: src="boto" dest=/home/copr/.boto owner=copr group=copr
 
 # setup webserver
+- name: add access_log.conf for lighttpd
+  copy: src="access_log.conf" dest=/etc/lighttpd/conf.d/access_log.conf owner=root group=root mode=0644
+  notify:
+  - restart lighttpd
+
 - name: add config for copr-repo path
   copy: src="{{ _lighttpd_conf_src }}" dest=/etc/lighttpd/lighttpd.conf owner=root group=root mode=0644
   notify: