MySQL 5.6 crashes often after upgrade -

i noticed in whm mysql 5.5 has eol december of 15' , upgraded 5.6 , mysql crashes @ least twice day, restarts after failing.

here sampling of error log.

any idea going on?

thank you.

---

8/23/15 here sampling of error log.

innodb: doing recovery: scanned log sequence number 579981897 2015-08-21 20:58:00 9080 [note] innodb: 128 rollback segment(s) active. 2015-08-21 20:58:00 9080 [note] innodb: waiting purge start 2015-08-21 20:58:00 9080 [note] innodb: 5.6.23 started; log sequence number 579981897 2015-08-21 20:58:00 9080 [note] server hostname (bind-address): '*'; port: 3306 2015-08-21 20:58:00 9080 [note] ipv6 not available. 2015-08-21 20:58:00 9080 [note]   - '0.0.0.0' resolves '0.0.0.0'; 2015-08-21 20:58:00 9080 [note] server socket created on ip: '0.0.0.0'. 2015-08-21 20:58:00 9080 [note] event scheduler: loaded 0 events 2015-08-21 20:58:00 9080 [note] /usr/sbin/mysqld: ready connections. version: '5.6.23'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  mysql community server (gpl) 150821 23:25:59 mysqld_safe number of processes running now: 0 150821 23:25:59 mysqld_safe mysqld restarted 2015-08-21 23:25:59 0 [warning] timestamp implicit default value deprecated. please use --explicit_defaults_for_timestamp server option (see documentation more details). 2015-08-21 23:25:59 13544 [note] plugin 'federated' disabled. 2015-08-21 23:25:59 13544 [note] innodb: using atomics ref count buffer pool pages 2015-08-21 23:25:59 13544 [note] innodb: innodb memory heap disabled 2015-08-21 23:25:59 13544 [note] innodb: mutexes , rw_locks use gcc atomic builtins 2015-08-21 23:25:59 13544 [note] innodb: memory barrier not used 2015-08-21 23:25:59 13544 [note] innodb: compressed tables use zlib 1.2.3 2015-08-21 23:25:59 13544 [note] innodb: using linux native aio 2015-08-21 23:25:59 13544 [note] innodb: using cpu crc32 instructions 2015-08-21 23:25:59 13544 [note] innodb: initializing buffer pool, size = 128.0m 2015-08-21 23:25:59 13544 [note] innodb: completed initialization of buffer pool 2015-08-21 23:25:59 13544 [note] innodb: highest supported file format barracuda. 2015-08-21 23:25:59 13544 [note] innodb: log scan progressed past checkpoint lsn 581241150 2015-08-21 23:25:59 13544 [note] innodb: database not shutdown normally! 2015-08-21 23:25:59 13544 [note] innodb: starting crash recovery. 2015-08-21 23:25:59 13544 [note] innodb: reading tablespace information .ibd files... 2015-08-21 23:25:59 13544 [note] innodb: restoring possible half-written data pages 2015-08-21 23:25:59 13544 [note] innodb: doublewrite buffer... innodb: doing recovery: scanned log sequence number 581282693 2015-08-21 23:25:59 13544 [note] innodb: starting apply batch of log records database... innodb: progress in percent: 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 innodb: apply batch completed 2015-08-21 23:26:00 13544 [note] innodb: 128 rollback segment(s) active. 2015-08-21 23:26:00 13544 [note] innodb: waiting purge start 2015-08-21 23:26:00 13544 [note] innodb: 5.6.23 started; log sequence number 581282693 2015-08-21 23:26:00 13544 [note] server hostname (bind-address): '*'; port: 3306 2015-08-21 23:26:00 13544 [note] ipv6 not available. 2015-08-21 23:26:00 13544 [note]   - '0.0.0.0' resolves '0.0.0.0'; 2015-08-21 23:26:00 13544 [note] server socket created on ip: '0.0.0.0'. 2015-08-21 23:26:00 13544 [note] event scheduler: loaded 0 events 2015-08-21 23:26:00 13544 [note] /usr/sbin/mysqld: ready connections. version: '5.6.23'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  mysql community server (gpl) 2015-08-22 02:36:21 13544 [warning] ip address '223.100.49.242' not resolved: temporary failure in name resolution 2015-08-22 02:36:56 13544 [warning] ip address '223.100.49.242' not resolved: temporary failure in name resolution 2015-08-22 02:37:23 13544 [warning] ip address '223.100.49.242' not resolved: temporary failure in name resolution 2015-08-22 11:27:54 13544 [warning] ip address '122.224.6.150' not resolved: name or service not known 150822 20:54:11 mysqld_safe number of processes running now: 0 150822 20:54:11 mysqld_safe mysqld restarted 2015-08-22 20:54:11 0 [warning] timestamp implicit default value deprecated. please use --explicit_defaults_for_timestamp server option (see documentation more details). 2015-08-22 20:54:11 15947 [note] plugin 'federated' disabled. 2015-08-22 20:54:11 15947 [note] innodb: using atomics ref count buffer pool pages 2015-08-22 20:54:11 15947 [note] innodb: innodb memory heap disabled 2015-08-22 20:54:11 15947 [note] innodb: mutexes , rw_locks use gcc atomic builtins 2015-08-22 20:54:11 15947 [note] innodb: memory barrier not used 2015-08-22 20:54:11 15947 [note] innodb: compressed tables use zlib 1.2.3 2015-08-22 20:54:11 15947 [note] innodb: using linux native aio 2015-08-22 20:54:11 15947 [note] innodb: using cpu crc32 instructions 2015-08-22 20:54:11 15947 [note] innodb: initializing buffer pool, size = 128.0m 2015-08-22 20:54:11 15947 [note] innodb: completed initialization of buffer pool 2015-08-22 20:54:11 15947 [note] innodb: highest supported file format barracuda. 2015-08-22 20:54:11 15947 [note] innodb: log sequence numbers 506046855 , 506046855 in ibdata files not match log sequence number 589358444 in ib_logfiles! 2015-08-22 20:54:11 15947 [note] innodb: database not shutdown normally! 2015-08-22 20:54:11 15947 [note] innodb: starting crash recovery. 2015-08-22 20:54:11 15947 [note] innodb: reading tablespace information .ibd files... 2015-08-22 20:54:12 15947 [note] innodb: restoring possible half-written data pages 2015-08-22 20:54:12 15947 [note] innodb: doublewrite buffer... 2015-08-22 20:54:13 15947 [note] innodb: 128 rollback segment(s) active. 2015-08-22 20:54:13 15947 [note] innodb: waiting purge start 2015-08-22 20:54:13 15947 [note] innodb: 5.6.23 started; log sequence number 589358444 2015-08-22 20:54:13 15947 [note] server hostname (bind-address): '*'; port: 3306 2015-08-22 20:54:13 15947 [note] ipv6 not available. 2015-08-22 20:54:13 15947 [note]   - '0.0.0.0' resolves '0.0.0.0'; 2015-08-22 20:54:13 15947 [note] server socket created on ip: '0.0.0.0'. 2015-08-22 20:54:13 15947 [note] event scheduler: loaded 0 events 2015-08-22 20:54:13 15947 [note] /usr/sbin/mysqld: ready connections. version: '5.6.23'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  mysql community server (gpl) 150822 20:54:13 mysqld_safe number of processes running now: 0 150822 20:54:13 mysqld_safe mysqld restarted 2015-08-22 20:54:13 0 [warning] timestamp implicit default value deprecated. please use --explicit_defaults_for_timestamp server option (see documentation more details). 2015-08-22 20:54:13 15983 [note] plugin 'federated' disabled. 2015-08-22 20:54:13 15983 [note] innodb: using atomics ref count buffer pool pages 2015-08-22 20:54:13 15983 [note] innodb: innodb memory heap disabled 2015-08-22 20:54:13 15983 [note] innodb: mutexes , rw_locks use gcc atomic builtins 2015-08-22 20:54:13 15983 [note] innodb: memory barrier not used 2015-08-22 20:54:13 15983 [note] innodb: compressed tables use zlib 1.2.3 2015-08-22 20:54:13 15983 [note] innodb: using linux native aio 2015-08-22 20:54:13 15983 [note] innodb: using cpu crc32 instructions 2015-08-22 20:54:13 15983 [note] innodb: initializing buffer pool, size = 128.0m 2015-08-22 20:54:13 15983 [note] innodb: completed initialization of buffer pool 2015-08-22 20:54:13 15983 [note] innodb: highest supported file format barracuda. 2015-08-22 20:54:13 15983 [note] innodb: log sequence numbers 506046855 , 506046855 in ibdata files not match log sequence number 589358444 in ib_logfiles! 2015-08-22 20:54:13 15983 [note] innodb: database not shutdown normally! 2015-08-22 20:54:13 15983 [note] innodb: starting crash recovery. 2015-08-22 20:54:13 15983 [note] innodb: reading tablespace information .ibd files... 2015-08-22 20:54:13 15983 [note] innodb: restoring possible half-written data pages 2015-08-22 20:54:13 15983 [note] innodb: doublewrite buffer... 2015-08-22 20:54:14 15983 [note] innodb: 128 rollback segment(s) active. 2015-08-22 20:54:14 15983 [note] innodb: waiting purge start 2015-08-22 20:54:14 15983 [note] innodb: 5.6.23 started; log sequence number 589358444 2015-08-22 20:54:14 15983 [note] server hostname (bind-address): '*'; port: 3306 2015-08-22 20:54:14 15983 [note] ipv6 not available. 2015-08-22 20:54:14 15983 [note]   - '0.0.0.0' resolves '0.0.0.0'; 2015-08-22 20:54:14 15983 [note] server socket created on ip: '0.0.0.0'. 2015-08-22 20:54:14 15983 [note] event scheduler: loaded 0 events 2015-08-22 20:54:14 15983 [note] /usr/sbin/mysqld: ready connections. version: '5.6.23'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  mysql community server (gpl) 2015-08-22 21:28:15 15983 [warning] ip address '221.229.162.143' not resolved: name or service not known 150822 23:04:56 mysqld_safe number of processes running now: 0 150822 23:04:56 mysqld_safe mysqld restarted 2015-08-22 23:04:56 0 [warning] timestamp implicit default value deprecated. please use --explicit_defaults_for_timestamp server option (see documentation more details). 2015-08-22 23:04:56 19131 [note] plugin 'federated' disabled. 2015-08-22 23:04:56 19131 [note] innodb: using atomics ref count buffer pool pages 2015-08-22 23:04:56 19131 [note] innodb: innodb memory heap disabled 2015-08-22 23:04:56 19131 [note] innodb: mutexes , rw_locks use gcc atomic builtins 2015-08-22 23:04:56 19131 [note] innodb: memory barrier not used 2015-08-22 23:04:56 19131 [note] innodb: compressed tables use zlib 1.2.3 2015-08-22 23:04:56 19131 [note] innodb: using linux native aio 2015-08-22 23:04:56 19131 [note] innodb: using cpu crc32 instructions 2015-08-22 23:04:56 19131 [note] innodb: initializing buffer pool, size = 128.0m 2015-08-22 23:04:57 19131 [note] innodb: completed initialization of buffer pool 2015-08-22 23:04:57 19131 [note] innodb: highest supported file format barracuda. 2015-08-22 23:04:57 19131 [note] innodb: log scan progressed past checkpoint lsn 590358682 2015-08-22 23:04:57 19131 [note] innodb: database not shutdown normally! 2015-08-22 23:04:57 19131 [note] innodb: starting crash recovery. 2015-08-22 23:04:57 19131 [note] innodb: reading tablespace information .ibd files... 2015-08-22 23:04:57 19131 [note] innodb: restoring possible half-written data pages 2015-08-22 23:04:57 19131 [note] innodb: doublewrite buffer... innodb: doing recovery: scanned log sequence number 590373690 2015-08-22 23:04:57 19131 [note] innodb: starting apply batch of log records database... innodb: progress in percent: 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 innodb: apply batch completed 2015-08-22 23:04:57 19131 [note] innodb: 128 rollback segment(s) active. 2015-08-22 23:04:57 19131 [note] innodb: waiting purge start 2015-08-22 23:04:57 19131 [note] innodb: 5.6.23 started; log sequence number 590373690 2015-08-22 23:04:57 19131 [note] server hostname (bind-address): '*'; port: 3306 2015-08-22 23:04:57 19131 [note] ipv6 not available. 2015-08-22 23:04:57 19131 [note]   - '0.0.0.0' resolves '0.0.0.0'; 2015-08-22 23:04:57 19131 [note] server socket created on ip: '0.0.0.0'. 2015-08-22 23:04:57 19131 [note] event scheduler: loaded 0 events 2015-08-22 23:04:57 19131 [note] /usr/sbin/mysqld: ready connections. version: '5.6.23'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  mysql community server (gpl) 2015-08-23 02:42:47 19131 [warning] ip address '221.229.162.143' not resolved: name or service not known 2015-08-23 10:27:43 19131 [warning] hostname 'unassigned.psychz.net' not resolve '45.34.1.137'. 2015-08-23 10:27:43 19131 [note] hostname 'unassigned.psychz.net' has following ip addresses: 2015-08-23 10:27:43 19131 [note]  - 199.15.112.8 2015-08-23 20:42:45 19131 [warning] ip address '60.191.129.138' not resolved: name or service not known 150823 20:54:08 mysqld_safe number of processes running now: 0 150823 20:54:08 mysqld_safe mysqld restarted 2015-08-23 20:54:08 0 [warning] timestamp implicit default value deprecated. please use --explicit_defaults_for_timestamp server option (see documentation more details). 2015-08-23 20:54:08 9837 [note] plugin 'federated' disabled. 2015-08-23 20:54:08 9837 [note] innodb: using atomics ref count buffer pool pages 2015-08-23 20:54:08 9837 [note] innodb: innodb memory heap disabled 2015-08-23 20:54:08 9837 [note] innodb: mutexes , rw_locks use gcc atomic builtins 2015-08-23 20:54:08 9837 [note] innodb: memory barrier not used 2015-08-23 20:54:08 9837 [note] innodb: compressed tables use zlib 1.2.3 2015-08-23 20:54:08 9837 [note] innodb: using linux native aio 2015-08-23 20:54:08 9837 [note] innodb: using cpu crc32 instructions 2015-08-23 20:54:08 9837 [note] innodb: initializing buffer pool, size = 128.0m 2015-08-23 20:54:08 9837 [note] innodb: completed initialization of buffer pool 2015-08-23 20:54:08 9837 [note] innodb: highest supported file format barracuda. 2015-08-23 20:54:08 9837 [note] innodb: log sequence numbers 506046855 , 506046855 in ibdata files not match log sequence number 599201345 in ib_logfiles! 2015-08-23 20:54:08 9837 [note] innodb: database not shutdown normally! 2015-08-23 20:54:08 9837 [note] innodb: starting crash recovery. 2015-08-23 20:54:08 9837 [note] innodb: reading tablespace information .ibd files... 2015-08-23 20:54:08 9837 [note] innodb: restoring possible half-written data pages 2015-08-23 20:54:08 9837 [note] innodb: doublewrite buffer... 150823 20:54:08 mysqld_safe mysqld pid file /var/lib/mysql/{hostname}.pid ended 150823 20:57:33 mysqld_safe starting mysqld daemon databases /var/lib/mysql 2015-08-23 20:57:34 0 [warning] timestamp implicit default value deprecated. please use --explicit_defaults_for_timestamp server option (see documentation more details). 2015-08-23 20:57:34 10285 [note] plugin 'federated' disabled. 2015-08-23 20:57:34 10285 [note] innodb: using atomics ref count buffer pool pages 2015-08-23 20:57:34 10285 [note] innodb: innodb memory heap disabled 2015-08-23 20:57:34 10285 [note] innodb: mutexes , rw_locks use gcc atomic builtins 2015-08-23 20:57:34 10285 [note] innodb: memory barrier not used 2015-08-23 20:57:34 10285 [note] innodb: compressed tables use zlib 1.2.3 2015-08-23 20:57:34 10285 [note] innodb: using linux native aio 2015-08-23 20:57:34 10285 [note] innodb: using cpu crc32 instructions 2015-08-23 20:57:34 10285 [note] innodb: initializing buffer pool, size = 128.0m 2015-08-23 20:57:34 10285 [note] innodb: completed initialization of buffer pool 2015-08-23 20:57:34 10285 [note] innodb: highest supported file format barracuda. 2015-08-23 20:57:34 10285 [note] innodb: log sequence numbers 506046855 , 506046855 in ibdata files not match log sequence number 599201345 in ib_logfiles! 2015-08-23 20:57:34 10285 [note] innodb: database not shutdown normally! 2015-08-23 20:57:34 10285 [note] innodb: starting crash recovery. 2015-08-23 20:57:34 10285 [note] innodb: reading tablespace information .ibd files... 2015-08-23 20:57:34 10285 [note] innodb: restoring possible half-written data pages 2015-08-23 20:57:34 10285 [note] innodb: doublewrite buffer... 2015-08-23 20:57:34 10285 [note] innodb: 128 rollback segment(s) active. 2015-08-23 20:57:34 10285 [note] innodb: waiting purge start 2015-08-23 20:57:34 10285 [note] innodb: 5.6.23 started; log sequence number 599201345 2015-08-23 20:57:34 10285 [note] server hostname (bind-address): '*'; port: 3306 2015-08-23 20:57:34 10285 [note] ipv6 not available. 2015-08-23 20:57:34 10285 [note]   - '0.0.0.0' resolves '0.0.0.0'; 2015-08-23 20:57:34 10285 [note] server socket created on ip: '0.0.0.0'. 2015-08-23 20:57:34 10285 [note] event scheduler: loaded 0 events 2015-08-23 20:57:34 10285 [note] /usr/sbin/mysqld: ready connections. version: '5.6.23'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  mysql community server (gpl) 

mysql 5.6 not supposed use 5.5 unmodified data files - format changes in every version and, sometimes, changes patch versions.

after upgrade should run mysql_upgrade. then, can use database normally.