systemd-conf: journald.conf: default config with log rotation parameters

Use smaller journal file size.
Reapply persistent logging.

Install default journald.conf file for all machine targets - as long
no machine specific file is available.

BugzID: 63714

Signed-off-by: Ramon Moesching <ramon.moesching@netmodule.com>

recipes-core/systemd/systemd-conf/journald.conf

@@ -0,0 +1,43 @@
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+#
+# Entries in this file show the compile time defaults.
+# You can change settings by editing this file.
+# Defaults can be restored by simply deleting this file.
+#
+# See journald.conf(5) for details.
+
+[Journal]
+Storage=persistent
+#Compress=yes
+#Seal=yes
+#SplitMode=uid
+#SyncIntervalSec=5m
+#RateLimitIntervalSec=30s
+#RateLimitBurst=10000
+SystemMaxUse=256M
+#SystemKeepFree=
+SystemMaxFileSize=2M
+#SystemMaxFiles=100
+RuntimeMaxUse=16M
+#RuntimeKeepFree=
+#RuntimeMaxFileSize=
+#RuntimeMaxFiles=100
+#MaxRetentionSec=
+#MaxFileSec=1month
+ForwardToSyslog=yes
+#ForwardToKMsg=no
+#ForwardToConsole=no
+#ForwardToWall=yes
+#TTYPath=/dev/console
+#MaxLevelStore=debug
+#MaxLevelSyslog=debug
+#MaxLevelKMsg=notice
+#MaxLevelConsole=info
+#MaxLevelWall=emerg
+#LineMax=48K
+#ReadKMsg=yes

recipes-core/systemd/systemd-conf_%.bbappend

@@ -2,9 +2,13 @@ FILESEXTRAPATHS_prepend := "${THISDIR}/${MACHINE}/${PN}:${THISDIR}/${PN}:"
 
 SRC_URI_append = " \
                  file://system.conf \
+                 file://journald.conf \
                  "
 
 do_install_append() {
     mkdir -p ${D}/etc/systemd/
     cp ${WORKDIR}/system.conf ${D}/etc/systemd
+
+    install -d ${D}${sysconfdir}/systemd
+    install -m 644 ${WORKDIR}/journald.conf ${D}${sysconfdir}/systemd
 }