Looking at the code in trunk, the stopdemon command invokes the CassandraDaemon.stop() function which does a graceful shutdown by stopping jmxServer and drains the node by the shutdown hook.
On 10/20/17, Simon Fontana Oscarsson <simon.fontana.oscars...@ericsson.com> wrote: > Yes, drain will always be run when Cassandra exits normally. > > On 2017-10-20 00:57, Varun Gupta wrote: >> Does, nodetool stopdaemon, implicitly drain too? or we should invoke >> drain and then stopdaemon? >> >> On Mon, Oct 16, 2017 at 4:54 AM, Simon Fontana Oscarsson >> <simon.fontana.oscars...@ericsson.com >> <mailto:simon.fontana.oscars...@ericsson.com>> wrote: >> >> Looking at the code in trunk, the stopdemon command invokes the >> CassandraDaemon.stop() function which does a graceful shutdown by >> stopping jmxServer and drains the node by the shutdown hook. >> >> /Simon >> >> >> On 2017-10-13 20:42, Javier Canillas wrote: >>> As far as I know, the nodetool stopdaemon is doing a "kill -9". >>> >>> Or did it change? >>> >>> 2017-10-12 23:49 GMT-03:00 Anshu Vajpayee >>> <anshu.vajpa...@gmail.com <mailto:anshu.vajpa...@gmail.com>>: >>> >>> Why are you killing when we have nodetool stopdaemon ? >>> >>> On Fri, Oct 13, 2017 at 1:49 AM, Javier Canillas >>> <javier.canil...@gmail.com >>> <mailto:javier.canil...@gmail.com>> wrote: >>> >>> That's what I thought. >>> >>> Thanks! >>> >>> 2017-10-12 14:26 GMT-03:00 Hannu Kröger >>> <hkro...@gmail.com <mailto: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 >>> <mailto: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. >>>> >>>> >>> >>> >>> >>> >>> -- >>> *Regards,* >>> *Anshu * >>> * >>> * >>> >>> >> >> > > -- Lutaaya Shafiq Web: www.ronzag.com | i...@ronzag.com Mobile: +256702772721 | +256783564130 Twitter: @lutayashafiq Skype: lutaya5 Blog: lutayashafiq.com http://www.fourcornersalliancegroup.com/?a=shafiqholmes "The most beautiful people we have known are those who have known defeat, known suffering, known struggle, known loss and have found their way out of the depths. These persons have an appreciation, a sensitivity and an understanding of life that fills them with compassion, gentleness and a deep loving concern. Beautiful people do not just happen." - *Elisabeth Kubler-Ross* --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
