Job for mysqld service failed See systemctl status mysqld service

Question

Console says   root ip-172-31-18-2 mysql   service mysqld start Starting mysqld  via systemctl    Job for mysqld service failed because the control process exited with error code  See  systemctl status mysqld service  and  journalctl -xe  for details    mysqld service   root ip-172-31-18-2 mysql   systemctl status mysqld service   mysqld service - SYSV  MySQL database server     Loaded  loaded   etc rc d init d mysqld     Active  failed  Result  exit-code  since Sat 2017-02-18 20 59 17 IST  36s ago      Docs  man systemd-sysv-generator 8    Process  9925 ExecStart  etc rc d init d mysqld start  code exited  status 1 FAILURE   Feb 18 20 59 16 ip-172-31-18-2 ap-southeast-1 compute internal systemd 1   Starting SYSV  MySQL database server     Feb 18 20 59 17 ip-172-31-18-2 ap-southeast-1 compute internal mysqld 9925   MySQL Daemon failed to start  Feb 18 20 59 17 ip-172-31-18-2 ap-southeast-1 compute internal mysqld 9925   Starting mysqld    FAILED  Feb 18 20 59 17 ip-172-31-18-2 ap-southeast-1 compute internal systemd 1   mysqld service  control process exited  code exited status 1 Feb 18 20 59 17 ip-172-31-18-2 ap-southeast-1 compute internal systemd 1   Failed to start SYSV  MySQL database server   Feb 18 20 59 17 ip-172-31-18-2 ap-southeast-1 compute internal systemd 1   Unit mysqld service entered failed state  Feb 18 20 59 17 ip-172-31-18-2 ap-southeast-1 compute internal systemd 1   mysqld service failed    What I have tried until now   mysqld safe --defaults-file  etc my cf  chown -R mysql mysql  var lib mysql   etc init d mysqld start    etc init d mysqld stop  systemctl restart systemd-logind   rebooted the server  Still no luck   my cnf file    For advice on how to change settings please see   http   dev mysql com doc refman 5 7 en server-configuration-defaults html   mysqld      Remove leading   and set to the amount of RAM for the most important data   cache in MySQL  Start at 70  of total RAM for dedicated server  else 10     innodb buffer pool size   128M     Remove leading   to turn on a very important data integrity option  logging   changes to the binary log between backups    log bin     Remove leading   to set options mainly useful for reporting servers    The server defaults are faster for transactions and fast SELECTs    Adjust sizes as needed  experiment to find the optimal values    join buffer size   128M   sort buffer size   2M   read rnd buffer size   2M datadir  var lib mysql socket  var lib mysql mysql sock    Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links 0  log-error  var log mysqld log pid-file  var run mysqld mysqld pid

User · Answer

In my particular case  the error was appearing due to missing  var log mysql with mysql-server package 5 7 21-1 on Debian-based Linux distro  Having ran strace and sudo  usr sbin mysqld --daemonize --pid-file  run mysqld mysqld pid   which is what the systemd service actually runs   it became apparent that the issue was due to this   2019-01-01T09 09 22 102568Z 0  ERROR  Could not open file   var log mysql error log  for error logging  No such file or directory   I ve recently removed contents of several directories in  var log so it was no surprise  The solution was to create the directory and make it owned by mysql user as in    sudo mkdir  var log mysql   sudo chown -R mysql mysql  var log mysql   Having done that I ve happily logged in via sudo mysql -u root and greeted with the old and familiar mysql gt  prompt

User · Answer

try   sudo chown mysql mysql -R  var lib mysql   then start your mysql service  systemctl start mysqld

User · Answer

open my cnf and copy the log-error path  then check the permission for the copied log file using   ls -l  var log mysql log  if any log file permission may changed from mysql mysql  please change the file permission to   chown -R mysql mysql  var log mysql log  then restart the mysql server   service mysql restart    systemctl restart mysqld   note  this kind of errors formed by the permission issues  all the mysql service start commands using the log file for writing the status of mysql  If the permission has been changed  the service can t be write anything into the log files  If it happens it will stopped to run the service

User · Answer

Had the same problem  Solved as given below  Use command    sudo tail -f  var log messages grep -i mysql   to check if SELinux policy is causing the issue  If so  first check if SELinux policy is enabled using command  sestatus  If it shows enabled  then disable it  To disable      vi  etc sysconfig selinux   change  SELINUX enforcing  to  SELINUX disabled     restart linux   check with sestatus and it should show  disabled    Uninstall and reinstall mysql  It should be working

User · Answer

remove any command of  quot secure file priv quot  in  etc mysql my cnf and restart mysql  If you want to use a file in mysql  copy those files to the main folder  The main folder is obtained this way   SHOW VARIABLES LIKE  quot secure file priv quot

User · Answer

the issue is with the  quot  etc mysql my cnf quot   this file must be modified by other libraries that you installed  this is how it originally should look like    This program is free software  you can redistribute it and or modify   it under the terms of the GNU General Public License  version 2 0    as published by the Free Software Foundation      This program is also distributed with certain software  including   but not limited to OpenSSL  that is licensed under separate terms    as designated in a particular file or component or in included license   documentation   The authors of MySQL hereby grant you an additional   permission to link the program and your derivative works with the   separately licensed software that they have included with MySQL      This program is distributed in the hope that it will be useful    but WITHOUT ANY WARRANTY  without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE   See the   GNU General Public License  version 2 0  for more details      You should have received a copy of the GNU General Public License   along with this program  if not  write to the Free Software   Foundation  Inc   51 Franklin St  Fifth Floor  Boston  MA 02110-1301  USA      The MySQL  Server configuration file      For explanations see   http   dev mysql com doc mysql en server-system-variables html      IMPORTANT  Additional settings that can override those from this file      The files must end with   cnf   otherwise they ll be ignored      includedir  etc mysql conf d        includedir  etc mysql mysql conf d

User · Answer

I met this problem today  and fix it with bellowed steps   1  Check the log file  var log mysqld log   tail -f  var log mysqld log   2017-03-14T07 06 53 374603Z 0  ERROR   usr sbin mysqld  Can t create write to file   var run mysqld mysqld pid   Errcode  2 - No such file or directory   2017-03-14T07 06 53 374614Z 0  ERROR  Can t start server  can t create PID file  No such file or directory   The log says that there isn t a file or directory  var run mysqld mysqld pid  2  Create the directory  var run mysqld  mkdir -p  var run mysqld    3  Start the mysqld again service mysqld start  but still fail  check the log again  var log mysqld log  2017-03-14T07 14 22 967667Z 0  ERROR   usr sbin mysqld  Can t create write to file   var run mysqld mysqld pid   Errcode  13 - Permission denied  2017-03-14T07 14 22 967678Z 0  ERROR  Can t start server  can t create PID file  Permission denied   It saids permission denied   4  Grant the permission to mysql chown mysql mysql  var run mysqld   5  Restart the mysqld    service mysqld restart Restarting mysqld  via systemctl                              OK

User · Answer

I had the same error  the problem was because I no longer had disk space  to check the space run this     df -h     Then delete some files that you didn t need   After this commands   service mysql start systemctl status mysql service mysql -u root -p   After entering with the root password verify that the mysql service was active

User · Answer

These are the steps I took to correct this   Back up your my cnf file in  etc mysql and remove or rename it  sudo mv  etc mysql my cnf  etc mysql my cnf bak   Remove the folder  etc mysql mysql conf d  using  sudo rm -r  etc mysql mysql conf d    Verify you don t have a my cnf file stashed somewhere else  I did in my home dir   or in  etc alternatives my cnf use  sudo find   -name my cnf   Now reinstall every thing   sudo apt purge mysql-server mysql-server-5 7 mysql-server-core-5 7 sudo apt install mysql-server   In case your syslog shows an error like  mysqld  Can t read dir of   etc mysql conf d    create a symbolic link   sudo ln -s  etc mysql mysql conf d  etc mysql conf d   Then the service should be able to start with sudo service mysql start   I hope it work

User · Answer

This amazingly worked    etc init d mysql stop service mysql stop killall -KILL mysql mysqld safe mysqld  etc init d mysql start service mysql start

User · Answer

I was also facing same issue   root          root  gt mysql -uroot -password   mysql   Warning  Using a password on the command line interface can be insecure  ERROR 2002  HY000   Can t connect to local MySQL server through socket   var lib mysql mysql sock   2   I found ROOT FS was also full and then I killed below lock session    root             var lib mysql  gt ls -ltr total 0 -rw------- 1 mysql mysql 0 Sep  9 06 41 mysql sock lock  Finally Issue solved

[mysql] Job for mysqld.service failed See "systemctl status mysqld.service"

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