That's what I thought. Thanks!
2017-10-12 14:26 GMT-03:00 Hannu Kröger <hkro...@gmail.com>: > Hi, > > Drain should be enough. It stops accepting writes and after that > cassandra can be safely shut down. > > Hannu > > On 12 October 2017 at 20:24:41, Javier Canillas (javier.canil...@gmail.com) > wrote: > > Hello everyone, > > I have some time working with Cassandra, but every time I need to shutdown > a node (for any reason like upgrading version or moving instance to another > host) I see several errors on the client applications (yes, I'm using the > official java driver). > > By the way, I'm starting C* as a stand-alone process > <https://docs.datastax.com/en/cassandra/3.0/cassandra/initialize/referenceStartCprocess.html?hl=start>, > and C* version is 3.11.0. > > The way I have implemented the shutdown process is something like the > following: > > *# Drain all information from commitlog into sstables* > > *bin/nodetool drain* > > > *cassandra_pid=`ps -ef|grep "java.*apache-cassandra"|grep -v "grep"|awk > '{print $2}'`* > *if [ ! -z "$cassandra_pid" ] && [ "$cassandra_pid" -ne "1" ]; then* > * echo "Asking Cassandra to shutdown (nodetool drain doesn't stop > cassandra)"* > * kill $cassandra_pid* > > * echo -n "+ Checking it is down. "* > * counter=10* > * while [ "$counter" -ne 0 -a ! kill -0 $cassandra_pid > /dev/null > 2>&1 ]* > * do* > * echo -n ". "* > * ((counter--))* > * sleep 1s* > * done* > * echo ""* > * if ! kill -0 $cassandra_pid > /dev/null 2>&1; then* > * echo "+ Its down."* > * else* > * echo "- Killing Cassandra."* > * kill -9 $cassandra_pid* > * fi* > *else* > * echo "Care there was a problem finding Cassandra PID"* > *fi* > > Should I add at the beginning the following lines? > > echo "shutdowing cassandra gracefully with: nodetool disable gossip" > $CASSANDRA_HOME/$CASSANDRA_APP/bin/nodetool disablegossip > echo "shutdowing cassandra gracefully with: nodetool disable binary > protocol" > $CASSANDRA_HOME/$CASSANDRA_APP/bin/nodetool disablebinary > echo "shutdowing cassandra gracefully with: nodetool thrift" > $CASSANDRA_HOME/$CASSANDRA_APP/bin/nodetool disablethrift > > The shutdown log is the following: > > *WARN [RMI TCP Connection(10)-127.0.0.1] 2017-10-12 14:20:52,343 > StorageService.java:321 - Stopping gossip by operator request* > *INFO [RMI TCP Connection(10)-127.0.0.1] 2017-10-12 14:20:52,344 > Gossiper.java:1532 - Announcing shutdown* > *INFO [RMI TCP Connection(10)-127.0.0.1] 2017-10-12 14:20:52,355 > StorageService.java:2268 - Node /10.254.169.36 <http://10.254.169.36> state > jump to shutdown* > *INFO [RMI TCP Connection(12)-127.0.0.1] 2017-10-12 14:20:56,141 > Server.java:176 - Stop listening for CQL clients* > *INFO [RMI TCP Connection(16)-127.0.0.1] 2017-10-12 14:20:59,472 > StorageService.java:1442 - DRAINING: starting drain process* > *INFO [RMI TCP Connection(16)-127.0.0.1] 2017-10-12 14:20:59,474 > HintsService.java:220 - Paused hints dispatch* > *INFO [RMI TCP Connection(16)-127.0.0.1] 2017-10-12 14:20:59,477 > Gossiper.java:1532 - Announcing shutdown* > *INFO [RMI TCP Connection(16)-127.0.0.1] 2017-10-12 14:20:59,480 > StorageService.java:2268 - Node /127.0.0.1 <http://127.0.0.1> state jump to > shutdown* > *INFO [RMI TCP Connection(16)-127.0.0.1] 2017-10-12 14:21:01,483 > MessagingService.java:984 - Waiting for messaging service to quiesce* > *INFO [ACCEPT-/192.168.6.174 <http://192.168.6.174>] 2017-10-12 > 14:21:01,485 MessagingService.java:1338 - MessagingService has terminated > the accept() thread* > *INFO [RMI TCP Connection(16)-127.0.0.1] 2017-10-12 14:21:02,095 > HintsService.java:220 - Paused hints dispatch* > *INFO [RMI TCP Connection(16)-127.0.0.1] 2017-10-12 14:21:02,111 > StorageService.java:1442 - DRAINED* > > Disabling Gossip seemed a good idea, but watching the logs, it may use it > to gracefully telling the other nodes he is going down, so I don't know if > it's good or bad idea. > > Disabling Thrift and Binary protocol should only avoid new connections, > but the one stablished and running should be attempted to finish. > > Any thoughts or comments? > > Thanks > > Javier. > > >
