Initial commit.

script/munin/README

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+to activate the munin plugins
+ - copy "osm_replication_lag" to "/usr/share/munin/plugins"
+ - make "/usr/share/munin/plugins/osm_replication_lag" executable
+ - symlink "/usr/share/munin/plugins/osm_replication_lag" to "/etc/munin/plugins"
+ - copy "osm_replication.conf" to "/etc/munin/plugin-conf.d"
+ - edit "/etc/munin/plugin-conf.d/osm_replication.conf" and set the workingDirectory
+ - restart the munin-node

script/munin/osm_replication.conf

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+[osm*]
+
+# the osmosis invocation may take some time
+timeout 60
+
+# the system user that has access to the working directory, if it'S different
+# from "munin"
+#user osm
+
+# path to the osmosis binary. if not set, osmosis is assumed to be in $PATH
+#env.osmosis /opt/osmosis/bin/osmosis
+
+# working directory of the osmosis replication.
+# this must be set to make the munin plugin work
+#env.workingDirectory /path/to/state.txt

script/munin/osm_replication_lag

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+#!/bin/sh
+# -*- sh -*-
+
+# load the munin plugin helper
+. $MUNIN_LIBDIR/plugins/plugin.sh
+
+# if no workingDirectory has been configures
+if [ ! $workingDirectory ]; then
+	# exit with an error
+	echo "no workingDirectory configured" >&2
+	exit 1
+fi
+
+# path to osmosis binary
+[ $osmosis ]  || osmosis="osmosis"
+
+# configuration section
+if [ "$1" = "config" ]; then
+
+	echo 'graph_title OSM PostGIS Database Replag'
+	echo 'graph_args --base 1000'
+	echo 'graph_vlabel seconds behind main database'
+	echo 'graph_category osm'
+	
+	echo 'lag.label replication lag'
+	echo 'lag.draw LINE'
+	
+	exit 0
+fi
+
+# invoke osmosis to calculate the replication lag
+lag=$($osmosis --read-replication-lag workingDirectory="$workingDirectory" 2>/dev/null)
+echo "lag.value $lag"
+
+exit 0