Question
Job for mysqld.service failed See “systemctl status mysqld.service , journalctl -xe & tail -30 /var/log/mysql/error.log "
- Posted August 23, 2017
- MySQLWordPressUbuntu 16.04
I don’t know what i have to do now seeing this error(mysql.service won’t start) bcz i’m that much linux guy… Pls give some solution asap
systemctl status mysqld.service
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: activating (start-post) (Result: exit-code) since Wed 2017-08-23 19:17:34 UTC; 24s ago
Process: 26606 ExecStart=/usr/sbin/mysqld (code=exited, status=1/FAILURE)
Process: 26597 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Main PID: 26606 (code=exited, status=1/FAILURE); : 26607 (mysql-systemd-s)
Tasks: 2
Memory: 324.0K
CPU: 520ms
CGroup: /system.slice/mysql.service
└─control
├─26607 /bin/bash /usr/share/mysql/mysql-systemd-start post
└─26676 sleep 1
Aug 23 19:17:34 ubuntu-1gb-nyc3-01 systemd[1]: Starting MySQL Community Server...
Aug 23 19:17:35 ubuntu-1gb-nyc3-01 systemd[1]: mysql.service: Main process exited, code=exited, status=1/FAILURE
journalctl -xe
-- Unit mysql.service has begun starting up.
Aug 23 19:19:05 ubuntu-1gb-nyc3-01 audit[26888]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/26888/status" pid=2688
Aug 23 19:19:05 ubuntu-1gb-nyc3-01 audit[26888]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" p
Aug 23 19:19:05 ubuntu-1gb-nyc3-01 audit[26888]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/26888/status" pid=2688
Aug 23 19:19:05 ubuntu-1gb-nyc3-01 kernel: audit: type=1400 audit(1503515945.954:748): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld"
Aug 23 19:19:05 ubuntu-1gb-nyc3-01 kernel: audit: type=1400 audit(1503515945.954:749): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld"
Aug 23 19:19:05 ubuntu-1gb-nyc3-01 kernel: audit: type=1400 audit(1503515945.954:750): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld"
Aug 23 19:19:06 ubuntu-1gb-nyc3-01 systemd[1]: mysql.service: Main process exited, code=exited, status=1/FAILURE
Aug 23 19:19:23 ubuntu-1gb-nyc3-01 sshd[26930]: Connection closed by 116.31.116.40 port 40327 [preauth]
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 systemd[1]: Failed to start MySQL Community Server.
-- Subject: Unit mysql.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysql.service has failed.
--
-- The result is failed.
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 systemd[1]: mysql.service: Unit entered failed state.
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 systemd[1]: mysql.service: Failed with result 'exit-code'.
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 systemd[1]: mysql.service: Service hold-off time over, scheduling restart.
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 systemd[1]: Stopped MySQL Community Server.
-- Subject: Unit mysql.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysql.service has finished shutting down.
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 systemd[1]: Starting MySQL Community Server...
-- Subject: Unit mysql.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysql.service has begun starting up.
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 audit[26981]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/26981/status" pid=2698
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 audit[26981]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" p
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 audit[26981]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/26981/status" pid=2698
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 kernel: audit: type=1400 audit(1503515976.446:751): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld"
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 kernel: audit: type=1400 audit(1503515976.446:752): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld"
Aug 23 19:19:36 ubuntu-1gb-nyc3-01 kernel: audit: type=1400 audit(1503515976.446:753): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld"
Aug 23 19:19:37 ubuntu-1gb-nyc3-01 systemd[1]: mysql.service: Main process exited, code=exited, status=1/FAILURE
Aug 23 19:19:48 ubuntu-1gb-nyc3-01 sudo[27025]: root : TTY=pts/0 ; PWD=/root ; USER=root ; COMMAND=/bin/journalctl -xe
Aug 23 19:19:48 ubuntu-1gb-nyc3-01 sudo[27025]: pam_unix(sudo:session): session opened for user root by root(uid=0)
tail -30 /var/log/mysql/error.log
2017-08-23T19:22:08.951104Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2017-08-23T19:22:08.951207Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)
2017-08-23T19:22:09.177161Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-08-23T19:22:09.181318Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.19-0ubuntu0.16.04.1) starting as process 27514 ...
2017-08-23T19:22:09.190896Z 0 [Note] InnoDB: PUNCH HOLE support available
2017-08-23T19:22:09.190945Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-08-23T19:22:09.190960Z 0 [Note] InnoDB: Uses event mutexes
2017-08-23T19:22:09.190971Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2017-08-23T19:22:09.190980Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.8
2017-08-23T19:22:09.190990Z 0 [Note] InnoDB: Using Linux native AIO
2017-08-23T19:22:09.191768Z 0 [Note] InnoDB: Number of pools: 1
2017-08-23T19:22:09.192044Z 0 [Note] InnoDB: Using CPU crc32 instructions
2017-08-23T19:22:09.195523Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2017-08-23T19:22:09.213977Z 0 [Note] InnoDB: Completed initialization of buffer pool
2017-08-23T19:22:09.219177Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2017-08-23T19:22:09.233451Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2017-08-23T19:22:09.252993Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2017-08-23T19:22:09.253125Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2017-08-23T19:22:09.264465Z 0 [Warning] InnoDB: 1048576 bytes should have been written. Only 851968 bytes written. Retrying for the remaining bytes.
2017-08-23T19:22:09.264519Z 0 [Warning] InnoDB: Retry attempts for writing partial data failed.
2017-08-23T19:22:09.264539Z 0 [ERROR] InnoDB: Write to file ./ibtmp1failed at offset 5242880, 1048576 bytes should have been written, only 851968 were written. Operating system error number 28. Check that your OS and file s2017-08-23T19:22:09.866980Z 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2017-08-23T19:22:09.867026Z 0 [ERROR] Plugin 'InnoDB' init function returned error.
2017-08-23T19:22:09.867033Z 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2017-08-23T19:22:09.867040Z 0 [ERROR] Failed to initialize plugins.
2017-08-23T19:22:09.867043Z 0 [ERROR] Aborting
2017-08-23T19:22:09.867049Z 0 [Note] Binlog end
2017-08-23T19:22:09.867098Z 0 [Note] Shutting down plugin 'MyISAM'
2017-08-23T19:22:09.867485Z 0 [Note] /usr/sbin/mysqld: Shutdown complete
and i’m using ubuntu 16.04(1gb) Droplet
Thanks in advance
Subscribe
Share
Submit an answer
You can type!ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
Sign in to AnswerThese answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
You should first setup a swapfile. and also add line like this
innodb_buffer_pool_size = 20M to the end of the line of your /etc/mysql/my.cnf
!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/
[mysqld]
innodb_buffer_pool_size = 20M```
I tried start and stop mysql.service and install mysql tuner… and try to open my.cnf … that’s it
Could you let us know what you’ve already tried to do to resolve your issue? Have you googled your error? If so have you tried those solutions? Have you tried purging mysql-server and start again?
Thanks not letting rest of the people know how did you solve the issue?
@iteagle03 I solved all issue…Thanks a lot last… can you help how to use any tool that can help to optimize or delete unnecessary file in ubuntu or any command???
Is the directory present? If so, is the access.log, error.log, and other_vhosts_access.log log files present in the directory?
@iteagle03 write to the directory ‘/var/log/apache2/’… what i need to do??? Thanks
So, in regards to your apache2 error it can’t write to the directory ‘/var/log/apache2/’. I have no idea what the problem is with mysql.
@iteagle03 now my apache2 and mysql both service is not starting it shows apache2.service:
and mysql.service:
@iteagle03
i just delete btmp.1 file and and i use this command “sudo du -aBM 2>/dev/null | sort -nr | head -n 10” & i see there is a file in this directory "/var/www/html/wp-content/log/oooo here is file named dbcache(24gb) " and deleted that file now disk space is:
but till mysql won’t start… what i need to do now???
@iteagle03 ok then we remove that btmp.1 file… i think it’s a size(89mb) to run ‘sudo du -aBM 2>/dev/null | sort -nr | head -n 10’… is it ok??? basically i don’t have that much skill on that…& that’s why i asked repeatedly…sorry
It’s ultimately up to you what you delete but do you see what I am trying to do? I’m trying to go through your logs and clear up some space. Hopefully after clear out some big log files we’ll have enough disk space to run the ‘sudo du -aBM 2>/dev/null | sort -nr | head -n 10’ command (lets add sudo to include some directories that might only be accessible as a sudo or root user). From there you can really dive into where your disk usage is and attempt to resolve that roadblock.
Another command you can run after clearing out your log files might be ‘sudo apt-get autoremove’ which will remove any packages that aren’t needed by your system.
It’s that or we add some block storage. You will know your sever better than anyone but something has eaten up all your available disk space.
am i need to delete auth.log.1 & btmp.1 or not???
apache2: