signal 6 in service.cc

2019-05-27 02:03:15 alert : (542) Fatal: MaxScale 2.3.6 received fatal signal 6. Attempting backtrace.

2019-05-27 02:03:19 alert : (542) Commit ID: 03dc969cf203decb4d0bc65280fe4f901da87830 System name: Linux Release string: Ubuntu 16.04.5 LTS

2019-05-27 02:03:24 error : (541) Could not route session command: All connections have failed. Connection information:

name: [server1] status: [Down] state: [NOT_IN_USE] last opened at: [Mon May 27 00:12:05 2019] last closed at: [Mon May 27 02:02:34 2019] last close reason: [] num sescmd: [0]

2019-05-27 02:03:24 error : (288) Could not route session command: All connections have failed. Connection information:

name: [server1] status: [Down] state: [NOT_IN_USE] last opened at: [Sat May 25 12:55:33 2019] last closed at: [Mon May 27 02:02:38 2019] last close reason: [] num sescmd: [0]

2019-05-27 02:03:26 error : (541) Routing the query failed. Session will be closed.

2019-05-27 02:03:26 error : (288) Routing the query failed. Session will be closed.

2019-05-27 02:03:31 warning: Error during monitor permissions test for server 'server1': Query 'SHOW SLAVE STATUS;' failed: 'Lost connection to MySQL server at 'handshake: reading inital communication packet', system error: 110'.

2019-05-27 02:03:34 notice : Server changed state: server1[127.0.0.1:3307]: master_up. [Down] -> [Master, Auth Error, Running]

2019-05-27 02:03:34 warning: (515) [Read-Write-Service] Write query received from adtraction@::ffff:172.30.3.135. Could not find a valid master connection. Closing client connection.

2019-05-27 02:03:34 error : (515) Could not find valid server for target type TARGET_MASTER, closing connection.

2019-05-27 02:03:34 error : (515) Routing the query failed. Session will be closed.

2019-05-27 02:03:34 error : (519) Could not find valid server for target type TARGET_SLAVE, closing connection.

2019-05-27 02:03:34 error : (519) Routing the query failed. Session will be closed.

2019-05-27 02:03:34 error : (531) Could not route session command: All connections have failed. Connection information:

name: [server1] status: [Master, Auth Error, Running] state: [NOT_IN_USE] last opened at: [Sun May 26 22:54:40 2019] last closed at: [Mon May 27 02:02:45 2019] last close reason: [] num sescmd: [0]

2019-05-27 02:03:34 error : (531) Routing the query failed. Session will be closed.

2019-05-27 02:03:34 alert : (542) /usr/bin/maxscale(_ZN7maxbase15dump_stacktraceESt8functionIFvPKcS2_EE+0x3a) [0x40cf9a]: /home/vagrant/MaxScale/maxutils/maxbase/src/stacktrace.cc:130

2019-05-27 02:03:34 alert : (542) /usr/bin/maxscale(_ZN7maxbase15dump_stacktraceEPFvPKcS1_E+0x48) [0x40d368]: /usr/include/c++/5/functional:1829

2019-05-27 02:03:34 alert : (542) /usr/bin/maxscale() [0x409930]: ??:0

2019-05-27 02:03:34 alert : (542) /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390) [0x7effc7177390]: ??:?

2019-05-27 02:03:35 alert : (542) /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(service_get_version+0x93) [0x7effc76b7263]: /home/vagrant/MaxScale/server/core/service.cc:2285

2019-05-27 02:03:35 alert : (542) /usr/lib/x86_64-linux-gnu/maxscale/libmariadbclient.so(+0x5892) [0x7effc0a15892]: /home/vagrant/MaxScale/server/modules/protocol/MySQL/mariadbclient/mysql_client.cc:1141

2019-05-27 02:03:35 alert : (542) /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(+0x84957) [0x7effc7670957]: /home/vagrant/MaxScale/server/core/dcb.cc:3136

2019-05-27 02:03:35 alert : (542) /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(+0x84a11) [0x7effc7670a11]: /home/vagrant/MaxScale/server/core/dcb.cc:3228

2019-05-27 02:03:35 alert : (542) /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker15poll_waiteventsEv+0x1b3) [0x7effc76cb203]: /home/vagrant/MaxScale/maxutils/maxbase/src/worker.cc:844

2019-05-27 02:03:35 alert : (542) /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker3runEPNS_9SemaphoreE+0x53) [0x7effc76cb423]: /home/vagrant/MaxScale/maxutils/maxbase/src/worker.cc:545

2019-05-27 02:03:35 alert : (542) /usr/bin/maxscale(main+0x1fa5) [0x408a15]: /home/vagrant/MaxScale/server/core/gateway.cc:2259

nm: /lib/x86_64-linux-gnu/libc.so.6: no symbols

2019-05-27 02:03:35 alert : (542) /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0) [0x7effc5ad2830]: ??:0

2019-05-27 02:03:35 alert : (542) /usr/bin/maxscale(_start+0x29) [0x409329]: ??:?