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From "Hiller, Dean" <>
Subject is upgradesstables required for 1.1.4 to 1.2.2? (I don't think it is)
Date Wed, 27 Feb 2013 18:54:40 GMT
My script to upgrade our first node in QA is thus (basically, snapshot, drain, stop, then switch
over then start)…


export NODE=$1
export VERSION=1.1.4
export USER=cassandra

#NOTE: This script requires you have cassandra 1.2.2 in /opt/cassandra-1.2.2 but
# feel free to modify if you like

#Move the newest cassandra.yaml to the node
scp cassandra.yaml $USER@$NODE:/opt/cassandra/conf

#As cassandra user, snapshot then drain the node
# and finally shut down cassandra on that node
ssh $USER@$NODE <<\EOF
   nodetool snapshot $VERSION
   nodetool drain
   pkill -f 'java.*cassandra'

#Now, our .bashrc for cassandra has /opt/cassandra/bin in it's path
# so we unlink and the link to the new cassandra as root since only root has
# access to the opt directory.
ssh root@$NODE <<\EOF
   rm /opt/cassandra
   ln -s /opt/cassandra-1.2.2 /opt/cassandra

#We should start cassandra ourselves we can watch the cluster as it joins the
#especially for the very first node we do...
#Now as cassandra user, start up the cassandra node and then do manual health checks
#ssh $USER@$NODE <<\EOF
#   cassandra

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