Hi, With Koha 16.11.11 / Package Installation/ Ubuntu 14.04 Desktop with MySQL - mysql Ver 14.14 Distrib 5.5.57 I am not able to access to Koha Server. however, I can connect to System (from SSH, putty). I am unable to connect to mysql database. I am not sure about any reason, because, it was running successfully and only during weekend (sunday), system was not accessed. but, when I tried to access Koha for Checkout and Checkin today, I am facing problem It is very critical for me to get this fixed, as it is a busy day for users and for me. Kindly help to fix this error. I am looking forward to hearing from you. #Critical Problem #Priority 1 So for I tried to know the status of MySQL: (as 'root' user) 1) mysql login ------------------------ mysql -u root -p Enter password: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) 2) Mysql Status --------------------------- service mysql start start: Job failed to start 3) System Log Verification ---------------------------- tail -f syslog Sep 3 11:07:42 gechlibrary bluetoothd[786]: Failed to init time plugin Sep 3 11:07:42 gechlibrary kernel: [ 0.000000] Linux version 3.13.0-91-generic (buildd@lgw01-35) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) ) #138-Ubuntu SMP Fri Jun 24 15:58:13 UTC 2016 (Ubuntu 3.13.0-91.138-generic 3.13.11-ckt39) Sep 3 11:07:42 gechlibrary kernel: [ 0.000000] KERNEL supported cpus: Sep 3 11:07:42 gechlibrary bluetoothd[786]: Failed to init alert plugin Sep 3 11:07:42 gechlibrary kernel: [ 0.000000] Intel GenuineIntel Sep 3 11:07:42 gechlibrary bluetoothd[786]: Failed to init thermometer plugin Sep 3 11:07:42 gechlibrary kernel: [ 0.000000] AMD AuthenticAMD Sep 3 11:07:42 gechlibrary bluetoothd[786]: Failed to init gatt_example plugin Sep 3 11:07:42 gechlibrary kernel: [ 0.000000] NSC Geode by NSC Sep 3 11:07:42 gechlibrary bluetoothd[786]: Bl 4) PID ps aux | grep mysqld root 3603 0.0 0.0 4688 832 pts/2 S+ 11:19 0:00 grep --color=auto mysqld 5) MySQL log ----------------- /var/log/mysql/error.log is empty 6) MySQL Status ------------------------------ # mysqld status 190903 11:30:48 [Warning] Using unique option prefix key_buffer instead of key_buffer_size is deprecated and will be removed in a future release. Please use the full name instead. 190903 11:30:48 [Warning] The syntax '--log-slow-queries' is deprecated and will be removed in a future release. Please use '--slow-query-log'/'--slow-query-log-file' instead. 190903 11:30:48 [Warning] Can't create test file /var/lib/mysql/gechlibrary.lower-test 190903 11:30:48 [Note] mysqld (mysqld 5.5.57-0ubuntu0.14.04.1-log) starting as process 4036 ... 190903 11:30:48 [Warning] Can't create test file /var/lib/mysql/gechlibrary.lower-test 190903 11:30:48 [Warning] Can't create test file /var/lib/mysql/gechlibrary.lower-test 190903 11:30:48 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead. 190903 11:30:48 [Note] Plugin 'FEDERATED' is disabled. 190903 11:30:48 InnoDB: The InnoDB memory heap is disabled 190903 11:30:48 InnoDB: Mutexes and rw_locks use GCC atomic builtins 190903 11:30:48 InnoDB: Compressed tables use zlib 1.2.8 190903 11:30:48 InnoDB: Using Linux native AIO mysqld: Can't create/write to file '/tmp/ibg0My0n' (Errcode: 30) 190903 11:30:48 InnoDB: Error: unable to create temporary file; errno: 30 190903 11:30:48 [ERROR] Plugin 'InnoDB' init function returned error. 190903 11:30:48 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. mysqld: Too many arguments (first extra is 'status'). Use --verbose --help to get a list of available options 190903 11:30:48 [ERROR] Aborting 190903 11:30:48 [Note] mysqld: Shutdown complete -- *Satish MV* Librarian - Govt. Engineering College Opp. Dairy Circle, B.M.Road, Hassan 573 201 Karnataka, INDIA Mobile: +91 9449765737 Personal Email: lis4satish@gmail.com College Website: www.gechassan.ac.in Library OPAC: http://library.gechassan.ac.in Library Portal : https://librarygechassan.wixsite.com/library