All it takes is one frustrated `sudo cassandra` run. Checking only the top level directory ownership is insufficient, since root could own files/dirs created below the top level. Find all files not owned by user cassandra: `find /mnt/cassandra/ \! -user cassandra`
Just another thought. -- Michael On 04/06/2017 05:23 AM, Cogumelos Maravilha wrote: > From cassandra.yaml: > > hints_directory: /mnt/cassandra/hints > data_file_directories: > - /mnt/cassandra/data > commitlog_directory: /mnt/cassandra/commitlog > saved_caches_directory: /mnt/cassandra/saved_caches > > drwxr-xr-x 3 cassandra cassandra 23 Apr 5 16:03 mnt/ > > drwxr-xr-x 6 cassandra cassandra 68 Apr 5 16:17 ./ > drwxr-xr-x 3 cassandra cassandra 23 Apr 5 16:03 ../ > drwxr-xr-x 2 cassandra cassandra 80 Apr 6 10:07 commitlog/ > drwxr-xr-x 8 cassandra cassandra 124 Apr 5 16:17 data/ > drwxr-xr-x 2 cassandra cassandra 72 Apr 5 16:20 hints/ > drwxr-xr-x 2 cassandra cassandra 49 Apr 5 20:17 saved_caches/ > > cassand+ 2267 1 99 10:18 ? 00:02:56 java > -Xloggc:/var/log/cassandra/gc.log -ea -XX:+UseThreadPriorities -XX:Threa... > > /dev/mapper/um_vg-xfs_lv 885G 27G 858G 4% /mnt > > On /etc/security/limits.conf > > * - memlock unlimited > * - nofile 100000 > * - nproc 32768 > * - as unlimited > > On /etc/security/limits.d/cassandra.conf > > cassandra - memlock unlimited > cassandra - nofile 100000 > cassandra - as unlimited > cassandra - nproc 32768 > > On /etc/sysctl.conf > > vm.max_map_count = 1048575 > > On /etc/systcl.d/cassanda.conf > > vm.max_map_count = 1048575 > net.ipv4.tcp_keepalive_time=600 > > On /etc/pam.d/su > ... > session required pam_limits.so > ... > > Distro is the currently Ubuntu LTS. > Thanks > > > On 04/06/2017 10:39 AM, benjamin roth wrote: >> Cassandra cannot write an SSTable to disk. Are you sure the >> disk/volume where SSTables reside (normally /var/lib/cassandra/data) >> is writeable for the CS user and has enough free space? >> The CDC warning also implies that. >> The other warnings indicate you are probably not running CS as root >> and you did not set an appropriate limit for max open files. Running >> out of open files can also be a reason for the IO error. >> >> 2017-04-06 11:34 GMT+02:00 Cogumelos Maravilha >> <cogumelosmaravi...@sapo.pt <mailto:cogumelosmaravi...@sapo.pt>>: >> >> Hi list, >> >> I'm using C* 3.10 in a 6 nodes cluster RF=2. All instances type >> i3.xlarge (AWS) with 32GB, 2 cores and SSD LVM XFS formated 885G. >> I have >> one node that is always dieing and I don't understand why. Can anyone >> give me some hints please. All nodes using the same configuration. >> >> Thanks in advance. >> >> INFO [IndexSummaryManager:1] 2017-04-06 05:22:18,352 >> IndexSummaryRedistribution.java:75 - Redistributing index summaries >> ERROR [MemtablePostFlush:22] 2017-04-06 06:00:26,800 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:22,5,main] >> org.apache.cassandra.io >> <http://org.apache.cassandra.io>.FSWriteError: >> java.io.IOException: Input/output >> error >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncDataOnlyInternal(SequentialWriter.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncInternal(SequentialWriter.java:185) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.compress.CompressedSequentialWriter.access$100(CompressedSequentialWriter.java:38) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.compress.CompressedSequentialWriter$TransactionalProxy.doPrepare(CompressedSequentialWriter.java:307) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.prepareToCommit(SequentialWriter.java:358) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.format.big.BigTableWriter$TransactionalProxy.doPrepare(BigTableWriter.java:367) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.format.SSTableWriter.prepareToCommit(SSTableWriter.java:281) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.SimpleSSTableMultiWriter.prepareToCommit(SimpleSSTableMultiWriter.java:101) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1153) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1086) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) >> ~[na:1.8.0_121] >> at >> >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) >> [na:1.8.0_121] >> at >> >> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:79) >> [apache-cassandra-3.10.jar:3.10] >> at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_121] >> Caused by: java.io.IOException: Input/output error >> at sun.nio.ch.FileDispatcherImpl.force0(Native Method) >> ~[na:1.8.0_121] >> at sun.nio.ch.FileDispatcherImpl.force(FileDispatcherImpl.java:76) >> ~[na:1.8.0_121] >> at sun.nio.ch.FileChannelImpl.force(FileChannelImpl.java:388) >> ~[na:1.8.0_121] >> at org.apache.cassandra.utils.SyncUtil.force(SyncUtil.java:158) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncDataOnlyInternal(SequentialWriter.java:169) >> ~[apache-cassandra-3.10.jar:3.10] >> ... 15 common frames omitted >> INFO [IndexSummaryManager:1] 2017-04-06 06:22:18,366 >> IndexSummaryRedistribution.java:75 - Redistributing index summaries >> ERROR [MemtablePostFlush:31] 2017-04-06 06:39:19,525 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:31,5,main] >> org.apache.cassandra.io >> <http://org.apache.cassandra.io>.FSWriteError: >> java.io.IOException: Input/output >> error >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncDataOnlyInternal(SequentialWriter.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncInternal(SequentialWriter.java:185) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.compress.CompressedSequentialWriter.access$100(CompressedSequentialWriter.java:38) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.compress.CompressedSequentialWriter$TransactionalProxy.doPrepare(CompressedSequentialWriter.java:307) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.prepareToCommit(SequentialWriter.java:358) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.format.big.BigTableWriter$TransactionalProxy.doPrepare(BigTableWriter.java:367) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.format.SSTableWriter.prepareToCommit(SSTableWriter.java:281) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.SimpleSSTableMultiWriter.prepareToCommit(SimpleSSTableMultiWriter.java:101) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1153) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1086) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) >> ~[na:1.8.0_121] >> at >> >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) >> [na:1.8.0_121] >> at >> >> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:79) >> [apache-cassandra-3.10.jar:3.10] >> at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_121] >> Caused by: java.io.IOException: Input/output error >> at sun.nio.ch.FileDispatcherImpl.force0(Native Method) >> ~[na:1.8.0_121] >> at sun.nio.ch.FileDispatcherImpl.force(FileDispatcherImpl.java:76) >> ~[na:1.8.0_121] >> at sun.nio.ch.FileChannelImpl.force(FileChannelImpl.java:388) >> ~[na:1.8.0_121] >> at org.apache.cassandra.utils.SyncUtil.force(SyncUtil.java:158) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncDataOnlyInternal(SequentialWriter.java:169) >> ~[apache-cassandra-3.10.jar:3.10] >> ... 15 common frames omitted >> INFO [main] 2017-04-06 07:11:57,289 YamlConfigurationLoader.java:89 - >> Configuration location: file:/etc/cassandra/cassandra.yaml >> >> >> Some ERRORs messages: >> >> ERROR [MemtablePostFlush:2] 2017-04-05 23:35:46,339 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:2,5,main] >> ERROR [MemtablePostFlush:3] 2017-04-05 23:44:08,471 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:3,5,main] >> ERROR [MemtablePostFlush:4] 2017-04-05 23:54:41,224 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:4,5,main] >> ERROR [MessagingService-Incoming-/10.0.120.52 >> <http://10.0.120.52>] 2017-04-06 03:19:13,453 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MessagingService-Incoming-/10.0.120.52 >> <http://10.0.120.52>,5,main] >> ERROR [epollEventLoopGroup-2-6] 2017-04-06 03:24:41,006 >> CassandraDaemon.java:229 - Exception in thread >> Thread[epollEventLoopGroup-2-6,10,main] >> ERROR [Native-Transport-Requests-36] 2017-04-06 03:25:45,915 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-49] 2017-04-06 03:25:45,915 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [IndexSummaryManager:1] 2017-04-06 03:25:45,915 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-69] 2017-04-06 03:25:45,916 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-46] 2017-04-06 03:26:18,465 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [SharedPool-Worker-136] 2017-04-06 03:26:18,465 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-156] 2017-04-06 03:26:18,465 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [SharedPool-Worker-92] 2017-04-06 03:26:24,696 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-48] 2017-04-06 03:26:24,696 ?:? - JVM >> state determined to be unstable. Exiting forcefully due to: >> ERROR [Native-Transport-Requests-66] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-77] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [GossipTasks:1] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-133] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-135] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [ScheduledFastTasks:1] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-70] 2017-04-06 03:27:11,569 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [IndexSummaryManager:1] 2017-04-06 03:27:17,821 >> CassandraDaemon.java:229 - Exception in thread >> Thread[IndexSummaryManager:1,1,main] >> ERROR [Native-Transport-Requests-103] 2017-04-06 03:27:24,049 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-69] 2017-04-06 03:27:24,049 >> SEPWorker.java:145 - Failed to execute task, unexpected exception >> killed >> worker: {} >> ERROR [SharedPool-Worker-98] 2017-04-06 03:27:24,049 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [MessagingService-Incoming-/10.0.120.52 >> <http://10.0.120.52>] 2017-04-06 03:27:55,079 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [epollEventLoopGroup-2-5] 2017-04-06 03:27:55,079 >> JVMStabilityInspector.java:142 - JVM state determined to be unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-64] 2017-04-06 03:28:43,285 >> SEPWorker.java:145 - Failed to execute task, unexpected exception >> killed >> worker: {} >> ERROR [MemtablePostFlush:22] 2017-04-06 06:00:26,800 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:22,5,main] >> ERROR [MemtablePostFlush:31] 2017-04-06 06:39:19,525 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:31,5,main] >> >> Also some WARNs: >> >> WARN [main] 2017-04-06 09:26:49,725 CLibrary.java:178 - Unable to >> lock >> JVM memory (ENOMEM). This can result in part of the JVM being swapped >> out, especially with mmapped I/O enabled. Increase RLIMIT_MEMLOCK >> or run >> Cassandra as root. >> >> WARN [main] 2017-04-06 09:25:07,355 StartupChecks.java:157 - JMX >> is not >> enabled to receive remote connections. Please see cassandra-env.sh for >> more info. >> >> WARN [main] 2017-04-06 09:25:07,369 SigarLibrary.java:174 - Cassandra >> server running in degraded mode. Is swap disabled? : true, Address >> space adequate? : true, nofile limit adequate? : false, nproc limit >> adequate? : true >> >> WARN [main] 2017-04-06 09:25:07,091 DatabaseDescriptor.java:493 - >> Small >> cdc volume detected at /var/lib/cassandra/cdc_raw; setting >> cdc_total_space_in_mb to 2502. You can override this in >> cassandra.yaml >> >> >> >
