I run this command
service mysqld status
It show this
● mysqld.service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)
when i run this command to start sql server
sudo service mysql start
It show this
Failed to start mysql.service: Unit mysql.service not found.
I Found solution of this.
First i copy the database frm files for backup.
Then i removed sql server completely.
Then i install sql server again.
after that i copy the frm files and paste in /var/lib/mysql
run command sudo chown -R mysql:mysql /var/lib/mysql.
And last restart the sql server with sudo service mysql restart
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 an 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 a 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
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
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
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 ]
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
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> prompt
if your problem not fix, you can try check more problem.
maybe mysql crash , like this :
you can check log in
sudo cat /var/log/mysql/error.log
or you check
sudo ls /var/crash
try
sudo chown mysql:mysql -R /var/lib/mysql
then start your mysql service
systemctl start mysqld
the issue is with the "/etc/mysql/my.cnf". 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/
I was also facing same issue .
root#*******:/root >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 >ls -ltr
total 0
-rw------- 1 mysql mysql 0 Sep 9 06:41 mysql.sock.lock
Finally Issue solved .
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
remove any command of "secure_file_priv" 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 "secure_file_priv";
You can purge all mysql-related packages and reinstall them with the following commands:
PACKAGES="mysql-server mysql-community-server mysql-community-server-core mysql-client mysql-client mysql-community-client mysql-community-client-core mysql-common mysql-community-client-plugins php-mysql"
apt purge $PACKAGES
echo "any remaining installed packages:"
dpkg -l|grep ii|grep mysql
apt install --reinstall mysql-common
apt install $PACKAGES
If there are any remaining packages (apart from mysql-core), add those to your list
Backup your config or data and reinstall mysql
sudo apt remove --purge mysql-server
sudo apt purge mysql-server
sudo apt autoremove
sudo apt autoclean
sudo apt remove dbconfig-mysql
sudo apt-get remove --purge mysql* -y
sudo apt-get autoremove -y
sudo apt-get autoclean
Then install it again.
That works here.
i have got the same "systemctl status mysql.service" and "journalctl -xe" for details. ERROR.
after repeated deinstallation and installation does not work at all.
but this one work well> https://linuxtut.com/en/5a5b0f46620ae1b27b10/
you just need to remove everything from my.cnf file except [mysqld] and start the server. this really work. but you might not have the password for root in that case skip-grant-tables and restart server in safe mode and use mysql and
update mysql.user set authentication_string=null where user='root' and then can alter user 'root'#'localhost' identified by 'your_$$new_99pwd#';
then login to secure mode and then you can create new user.
Also don't forget to check on your docker containers, for me it was my docker has mysql running on the background.
Connect to the server using SSH.
Stop the affected MySQL service and the service plesk-web-socket to prevent it from attempting to start MySQL:
service mysql stop || service mariadb stop && service plesk-web-socket stop
Back up all the MySQL data storage files. By default, they are located in the directory /var/lib/mysql/.
For example:
cp -a /var/lib/mysql /root/mysql_backup
Add the parameter innodb_force_recovery to the section [mysqld] of the MySQL configuration file. This option allows starting MySQL service in the recovery mode and try creating dumps of databases.
For example:
vi /etc/my.cnf
[mysqld]
innodb_force_recovery = 2
Start the MySQL service.
after having tested several solutions without success, the one that finally worked is the following:
you can load the default configuration of your apache server
sudo a2ensite 000-default.conf
sudo a2dissite my.conf
systemctl reload apache2
then reload the configuration for your website
sudo a2ensite my.conf
sudo a2dissite 000-default.conf
systemctl reload apache2
I had the same issue and after hours the solution was for me:
Open this file nano /etc/mysql/my.cnf
#I use mysql service if you use mysqld service, type mysqld instead of mysql
[mysql]
innodb_force_recovery = 1
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.
I am trying to start mariadb with systemctl start mariadb also tried using sudo along.
This is what it says
Job for mariadb.service failed because the control process exited with
error code. See "systemctl status mariadb.service" and "journalctl
-xe" for details.
I saw this at many places but nothing helped.
It fails, I removed, installed again, nothing happened.
This is a part of /var/log/messages
Jun 17 18:03:09 controller systemd: Starting MariaDB 10.1 database
server...
Jun 17 18:03:09 controller mysqld: 2016-06-17 18:03:09 140477178509440
[Note] /usr/libexec/mysqld (mysqld 10.1.12-MariaDB) starting as process 120408 ...
Jun 17 18:03:12 controller systemd: mariadb.service: main process exited, code=exited, status=1/FAILURE
Jun 17 18:04:13 controller systemd: mariadb.service: control process exited, code=exited status=3
Jun 17 18:04:13 controller systemd: Failed to start MariaDB 10.1 database server.
Jun 17 18:04:13 controller systemd: Unit mariadb.service entered failed state.
Jun 17 18:04:13 controller systemd: mariadb.service failed.
I am really new to CentOS and mariadb, so I don't know how to proceed.
EDIT
The mariadb.log says
2016-06-17 19:24:39 140652810123392 [Note] Server socket created on IP: '::'.
2016-06-17 19:24:39 140652810123392 [ERROR] Can't start server: Bind on TCP/IP port. Got error: 98: Address already in use
2016-06-17 19:24:39 140652810123392 [ERROR] Do you already have another mysqld server running on port: 3306 ? 2016-06-17 19:24:39 140652810123392 [ERROR] Aborting
This is my my.cnf
#
# This group is read both both by the client and the server
# use it for options that affect everything
#
[client-server]
#
# This group is read by the server
#
[mysqld]
port=5555
bind-address = 10.23.77.68
default-storage-engine = innodb
innodb_file_per_table
collation-server = utf8_general_ci
init-connect = 'SET NAMES utf8'
character-set-server = utf8
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
I tried adding a line in my.cnf
port=5555
Didn't help, mariadb.log says the same thing as I have mentioned earlier.
I solved as follows:
After installing
Run: > mysql_install_db --user=mysql --basedir=/usr --datadir=/var/lib/
Then: >mysql_secure_installation
And then: systemctl start mariadb
With this this, I can resolved.
Just remove following files at location
/var/lib/mysql
ib_logfile0
ib_logfile1
fuser -k 3306/tcp will solve the probem.
-k is to Kill processes accessing the file.
This is my first post here, so I hope I do everything right and don't forget any important info. I'm glad for any hints, because I'm running out of ideas (if I ever had any ;)).
I am (or was) running owncloud on Raspbian Jessie (so I guess basically Debian). Suddenly owncloud stopped working. The nginx error points towards php5-fpm, further searches gave this error:
exception 'Doctrine\DBAL\DBALException' with message 'Failed to connect to the database: An exception occured in driver: SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' in /var/www/owncloud/lib/private/db/connection.php:54
So it looks like a mysql error, and /var/run/mysqld/ is actually empty.
Following these posts 1 and
2, I tried
sudo find / -type s
resulting in this output:
/run/php5-fpm.sock
/run/fail2ban/fail2ban.sock
/run/thd.socket
/run/dhcpcd.unpriv.sock
/run/dhcpcd.sock
/run/dbus/system_bus_socket
/run/avahi-daemon/socket
/run/udev/control
/run/systemd/journal/syslog
/run/systemd/journal/socket
/run/systemd/journal/stdout
/run/systemd/journal/dev-log
/run/systemd/shutdownd
/run/systemd/private
/run/systemd/notify
find: `/proc/30933/task/30933/fd/5': No such file or directory
find: `/proc/30933/task/30933/fdinfo/5': No such file or directory
find: `/proc/30933/fd/5': No such file or directory
find: `/proc/30933/fdinfo/5': No such file or directory
In the processes with top on the other hand, mysqld and mysqld_safe show up.
mysql-client, mysql-server and php5-mysql are installed and updated to the latest versions.
I also had a look at
/etc/mysql/my.cnf
/etc/mysql/debian.cnf
both show /var/run/mysqld/mysqld.sock as socket...
/var/lib/mysql/my.cnf
mentioned here does not exist.
Additionally, it seems that I can't connect to mysql through
mysql -u user -p
at least it results in the Error 2002 as well.
Finally, I tried stopping and starting the mysql service. This resulted in the following output of
systemctl status mysql.service
mysql.service - LSB: Start and stop the mysql database server daemon
Loaded: loaded (/etc/init.d/mysql)
Active: failed (Result: exit-code) since So 2016-04-10 11:54:23 CEST; 23s ago
Process: 9777 ExecStop=/etc/init.d/mysql stop (code=exited, status=0/SUCCESS)
Process: 12878 ExecStart=/etc/init.d/mysql start (code=exited, status=1/FAILURE)
So I'm kind of lost what is going on, the problem occurs since some updates a few days ago. While writing this post, I went through all the steps again, just to be safe. At one point, I had a short glimpse at my owncloud instance in the browser, but then it was gone again. So I appreciate any help/hints!!!
Thank you very much!!!
I faced the issue: Can't connect to '/var/run/mysqld/mysqld.sock'. The problem was that mysql service was not started after installation. Once I run the following command, then it worked properly:
systemctl start mysql.service
mysql -u root -p
1.Activate log in .my.cnf
log = /var/log/mysql/mysql.log
Error logging goes to syslog. This is a Debian improvement :)
Here you can see queries with especially long duration
log_slow_queries = /var/log/mysql/mysql-slow.log
long_query_time = 2
log-queries-not-using-indexes
$ ls -l /var/run/ | grep mysqld
$ ps -ef |grep mysql
tail -f /var/log/mysql/mysql.log
restart mysql
(option) delete socket & restart mysql
I trying to set up master replication server. When I try to start/restart the server after added log-bin directory as following in my.cnf,
log-bin = /var/log/mysql/mysql-bin.log
the server is not starting up.
MySQL status
mysqld.service - MySQL Server
Loaded: loaded (/etc/systemd/system/mysqld.service; enabled)
Active: inactive (dead) since Mon, 13 Jul 2015 17:46:47 +0800; 1s ago
Process: 14145 ExecStart=/usr/bin/mysqld_safe --defaults-file=/etc/my.cnf --datadir=/var/lib/mysql --socket=/var/lib/mysql/mysql.sock (code=exited, status=0/SUCCESS)
CGroup: name=systemd:/system/mysqld.service
But after I changed the log-bin as following (without folder path)
log-bin = mysql-bin.log
the server is running successfully.
MySQL status
mysqld.service - MySQL Server
Loaded: loaded (/etc/systemd/system/mysqld.service; enabled)
Active: active (running) since Mon, 13 Jul 2015 17:47:43 +0800; 2s ago
Main PID: 15272 (mysqld_safe)
CGroup: name=systemd:/system/mysqld.service
├ 15272 /bin/sh /usr/bin/mysqld_safe --defaults-file=/etc/my.cnf --datadir=/var/lib/mysql --socket=/var/lib/mysql/mysq...
└ 15615 /usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/...
Update
From mysqld.log :
/var/log/mysql/mysql-bin.index' not found (Errcode: 2)
But my mysql-bin.index by default at
/var/lib/mysql/mysql-bin.index
Could anyone please help me out as I just start to learn master-slave replication? Do I need to create a folder name mysql and change the permission to mysql and put in log directory or how I can make sure it locates my mysql-bin.index file correctly?
Finally I have found the solution. Not sure whether I did it in a right way.
After searched about (Errcode: 2), found that it is indicate that the file or directory does not exist. So I have created the folder named as mysql and added in log directory (Logged in as root user). When I try to restart the server, it gives me another error:
/var/log/mysql/mysql-bin.index' not found (Errcode: 13)
Errcode: 13 indicates permission denied. So I have change the ownership from root to mysql :
chown -R mysql:mysql /var/log/mysql
I restart the server and it runs successfully.
If there is an error in path access related to data and logs of mysql it will call the default /var/lib/mysql and /var/log/mysql. To ovveride mysql log file path do the following.
create new path
make the path with ownership of mysql user
example - sudo shown -R mysql:mysql /mnt/mysql/logs
pass the path to apparmor to read this directory.
file location - /etc/apparmor.d/usr.sbin.mysqld
content
# Allow log file access
/mnt/mysql/logs/ r,
/mnt/mysql/logs/** rw,
Note: if apparmor has not correct path then it will give issue of permission that confuses with simple chown and chmod