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[[Category: Monitoring]]
In this setup there is a central rrd server that collects we're using [http://oss.oetiker.ch/rrdtool/ rrdtool] to collect data from several openvz hardware nodesto a central [http://oss.oetiker.ch/rrdtool/doc/rrdtool.en.html#IRRD_Server rrd server].
=== Setting up rrd server ===
}
Add service in 'rrdsrv' to /etc/services
rrdsrv 13900/tcp
done
VPSIDS=$(vzlist | awk ' BEGIN { ORS=" "; getline } { print $1 }'-H -o veid)
PARAMS=$(cat /proc/bc/0/resources | awk '{ print $1 }'| sort -u | xargs)
send - use this to send commands to rddtool
=== Migration and new vps container ===
When you have this script running in cron on every hardware node and you're migrating a vps container from one node to the other the script will automatically detect this and pick it up on the other node.
When you create a new vps container you have to run <code>ubc_rrd_collect.sh init send</code> and it will ping rddtool to create a new rrd database. It won't overwrite existing databases because it first checks if a database already exists.
=== Setting up cron ===