mysql to syslog - mysql

I would like to log information on mysql database performances (tables spaces, number of queries...) in a file and then forward to a syslog remote server. Mysql is installed
on Linux. Is it possible?
Thanks

Creating a log file for example:
% sudo touch filename.log
Setting owner/group
% sudo chown mysql:wheel filename.log
Setting permissions to -rw-r-----
% sudo chmod 644 filename.log
To log queries taking longer than 2 seconds to a log file in /var/log directory add these to the my.cnf file:
[mysqld]
log_slow_queries=/var/log/mysql_slow_query.log
long_query_time=2

Related

Reinstall MySQL (mariadb) in Debian Stretch

I removed mysql completely including configuration files and when I try to reinstall, there is no mysql.socket (I searched in /var/lib/mysql/ and there's nothing.
Typically you will see mysql.sock file when you start the mysql daemon process. This is create the sock file.
But you can also search and see whether it has created somewhere.
netstat -ln | grep -o -m 1 -E '\S*mysqld?\.sock'
or
you can check with this command:
% mysqladmin variables
If you want to create the file, you can do this
mkdir /var/mysql
ln -s /tmp/mysql.sock /var/mysql/mysql.sock
This thread explains things in more details.

Job for mysqld.service failed See "systemctl status mysqld.service"

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.

use mysqlbinlog command can't find file

when I use mysqlbinlog command I can't find the file.
lihaodeMacBook-Pro:data lihao$ mysqlbinlog --start-position=106 --stop-position=125 mysqlbin.000001 > ~/tmp1.sql
mysqlbinlog: File 'mysql-bin.000001' not found (Errcode: 13)
lihaodeMacBook-Pro:data lihao$ ls -a
. ib_logfile0 library mysql-bin.000001
.. ib_logfile1 lihaodeMacBook-Pro.local.err mysql-bin.000002
lihaodeMacBook-Pro:data lihao$ mysqlbinlog /usr/local/mysql-5.1.63-osx10.6-x86_64/data/mysql-bin.000001
/*!40019 SET ##session.max_insert_delayed_threads=0*/;
/*!50003 SET #OLD_COMPLETION_TYPE=##COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
mysqlbinlog: File '/usr/local/mysql-5.1.63-osx10.6-x86_64/data/mysql-bin.000001' not found (Errcode: 13)
I find the solution of the question by myself.I can't find the file because I don't have permission to read or write the file.I can use the command by add sudo at front of the commend.
Mysql Server 5.7 issue resolved:
there are two possibilities over here.
One is either your bin-log file is in /var/log/mysql in that case:
cd /var/log/mysql/
then access the file as sudo user
sudo mysqlbinlog mysql-bin.00000x
if file is in /var/lib/mysql then one needs sudo access to even read the file so follow these two steps:
Login as sudo root user
sudo -i
Once u are sudo user then go to the following directory: (without being a sudo user this location will deny the permission to even enter the directory)
cd /var/lib/mysql/
after that access the file
sudo mysqlbinlog mysql-bin.00000x
In my case it was permission related. Ensure you're sudo when using mysqlbinglong utility.
Should somebody submit an issue to the creators of the mysqlbinlog utility ? The error should be a bit more clear in my opinion.

MySQL Job failed to start

I'm on Kubuntu 12.04, and after installing mysql via an apt-get (mysql ver: 5.5.35), i'm trying to start mysql service, but I got this error:
sudo service mysql start
start: Job failed to start
So I googled this problem, it says i have to go to the /var/log/mysql/error.log
But my error.log file is empty :(
Then I checked the permissions
:
drwxr-s--- 2 mysql adm 4096 Apr 7 11:21 mysql
-rw-r----- 1 mysql adm 0 Apr 7 11:21 error.log
So I don't know what to do... Why this error ? Why is the error file empty ?
First make a backup of your /var/lib/mysql/ directory just to be safe.
sudo mkdir /home/<your username>/mysql/
cd /var/lib/mysql/
sudo cp * /home/<your username>/mysql/ -R
Next purge MySQL (this will remove php5-mysql and phpmyadmin as well as a number of other libraries so be prepared to re-install some items after this.
sudo apt-get purge mysql-server-5.1 mysql-common
Remove the folder /etc/mysql/ and it's contents
sudo rm /etc/mysql/ -R
Next check that your old database files are still in /var/lib/mysql/ if they are not then copy them back in to the folder then chown root:root
(only run these if the files are no longer there)
sudo mkdir /var/lib/mysql/
sudo chown root:root /var/lib/mysql/ -R
cd ~/mysql/
sudo cp * /var/lib/mysql/ -R
Next install mysql server
sudo apt-get install mysql-server
Finally re-install any missing packages like phpmyadmin and php5-mysql.
My problem was running out of memory. Digital ocean has great instruction for adding swap memory for Ubuntu: https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-14-04
This solved the issue and enabled me to restart the Mysql that otherwise would not start.
Reinstallation will works because it will reset all the value to default. It is better to find what the real culprits (my.cnf editing mistake does happens, e.g. bad/outdated parameter suggestion during mysql tuning.)
Here is the mysql diagnosis if you suspect some value is wrong inside my.cnf : Run the mysqld to show you the results.
sudo -u mysql mysqld
Afterwards, fix all the my.cnf key error that pop out from the screen until mysqld startup successfully.
Then restart it using
sudo service mysql restart
In my case, it simply because the disk is full.
Just clear some disk space and restart and everything is fine.
In most cases, just purging the mysql-server package and re-installing it will do the job.
Run,
sudo apt-get purge mysql-server-5.1 mysql-common
followed by
sudo apt-get install mysql-server
This line did solve the issue in my case,
sudo apt clean
In my case, i do:
sudo nano /etc/mysql/my.cnf
search for bind names and IPs
remove the specific, and let only localhost 127.0.0.1 and the hostname
Check the file permissions, if edited
Fail:
$ sudo chmod 776 /etc/mysql/my.cnf
$ sudo service mysql restart
mysql stop/waiting
start: Job failed to start
Ok:
$ sudo chmod 774 /etc/mysql/my.cnf
$ sudo service mysql restart
stop: Unknown instance:
mysql start/running, process 9564
To help others who do not have a full disk to troubleshoot this problem, first inspect your error log (for me the path is given in my /etc/mysql/my.cnf file):
tail /var/log/mysql/error.log
My problem turned out to be a new IP address allocated after some network router reconfiguration, so I needed to change the bind-address variable.
In my case the problem was the /var/log disk full (check with df -h)
Just deleted some log files and mysql started, no big deal!
The given solution requires enough free HDD, the actual problem was the HDD memory shortage. So If you don't have an alternative server or free disk space, you need some other alternative.
I faced this error with my production server (Linode VPS) when I was running a bulk download into MySQL. Its not a proper solution but VERY QUICK FIX, which we often need in production to bring things UP FAST.
Resize our VPS Server to higher Hard Disk size
Start MySQL, it works.
Login to your MySQL instance and make appropriate adjustments that caused this error (e.g. remove some records, table, or take DB backup to your local machine that are not required at production, etc. After all you know, what caused this issue.)
Downgrade your VPS Server to previous package you was already using
In my case:
restart server
restart mysql
create .socket in directory
I had the same problem. But i discover that my hd is full.
$ sudo cat /var/log/upstart/mysql.log
/proc/self/fd/9: ERROR: The partition with /var/lib/mysql is too full!
So, I run
$ df -h
And I got the message
/dev/xvda1 7.8G 7.4G 0 100% /
Then I found out which folder was full by running the following command on the terminal
$ cd /var/www
$ for i in *; do echo $i; find $i |wc -l; done
This give me the number of files on each folder on /var/www. I logged into the folder with most files, and deleted some backup files, and i continued deleting useless files and cache files.
then I run $ sudo /etc/init.d/mysql start and it work again

Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist

I am on a server that has afresh install on RHEL 5. I was able to install Apache and PHP just fine., but I am having serious trouble with my MySQL installation. I tried the following:
yum install mysql-server mysql
And didn't get any errors or conflicts. Then I tried to start mysql with the following commands:
chkconfig --levels 235 mysqld on
service mysqld start
And get Timeout error occurred trying to start MySQL Daemon.
I checked my logs and see this error:
[ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist
I'm not sure where to go from here.
For reference I am using RHEL 5 and installed the latest versions of PHP 5 and Apache.
After chown and chgrp'ing /var/lib/mysql per the answer by #Bad Programmer, you may also have to execute the following command:
sudo mysql_install_db --user=mysql --ldata=/var/lib/mysql
Then restart your mysqld.
Uninstall mysql using yum remove mysql*
Recursively delete /usr/bin/mysql and /var/lib/mysql
Delete the file /etc/my.cnf.rmp
Use ps -e to check the processes to make sure mysql isn't still running.
Reboot server with reboot
Run yum install mysql-server. This also seems to install the mysql client as a dependency.
Give mysql ownership and group priveleges with:
chown -R mysql /var/lib/mysql
chgrp -R mysql /var/lib/mysql
Use service mysqld start to start MySQL Daemon.
I had this issue on arch linux as well. The issue was pacman installed the package in a different location than MySQL was expecting. I was able to fix the issue with this:
sudo mysql_install_db --user=mysql --basedir=/usr/ --ldata=/var/lib/mysql/
Hope this helps someone!
The root of my problem seemed to be selinux, which was turned on (enforcing)
automatically on OS install.
I wanted my mysql in /data.
After verifying that my.cnf had:
datadir=/data/mysql
(and leaving the socket at /var/lib/mysql)
I executed the command to turn off selinux for mysqld
(alternative is to turn it off completely):
setsebool -P mysqld_disable_trans=1
I ran the following commands:
> chown -R mysql .
> chgrp -R mysql .
> mysql_install_db --user=mysql
I started the mysql daemon and everything worked fine after that.
mysql_install_db –-user=mysql --ldata=/var/lib/mysql
Worked for me in Centos 7
initialize mysql before start on windows.
mysqld --initialize
When download mysql zip version, if run mysqld directly, you'll get this error:
2016-02-18T07:23:48.318481Z 0 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist
2016-02-18T07:23:48.319482Z 0 [ERROR] Aborting
You have to run below command first:
mysqld --initialize
Make sure your data folder is empty before this command.
Just this command is enough to do the magic on centos 6.6
mysql_install_db
I just met the same problem with mysql 5.7 on OSX:
rm -rf {datadir}
mysqld --initialize --datadir {datadir}
mysqld --datadir {datadir}
If you move your datadir, you not only need to give the new datadir permissions, but you need to ensure all parent directories have permission.
I moved my datadir to a hard drive, mounted in Ubuntu as:
/media/*user*/Data/
and my datadir was Databases.
I had to set permissions to 771 to each of the media, user and Data directories:
sudo chmod 771 *DIR*
If this does not work, another way you can get mysql to work is to change user in /etc/mysql/my.cnf to root; though there are no doubt some issues with doing that from a security perspective.
For myself, I had to do:
yum remove mysql*
rm -rf /var/lib/mysql/
cp /etc/my.cnf ~/my.cnf.bkup
yum install -y mysql-server mysql-client
mysql_install_db
chown -R mysql:mysql /var/lib/mysql
chown -R mysql:mysql /var/log/mysql
service mysql start
Then I was able to get back into my databases and configure them again after I nuked them the first go around.
In my case the path of MySQL data folder had a special character "ç" and it make me get...
Fatal error: Can't open and lock privilege tables: Table 'mysql.host'
doesn't exist.
I'm have removed all special characters and everything works.
On CentOS EL 6 and perhaps on earlier versions there is one way to get into this same mess.
Install CentOS EL6 with a minimal installation. For example I used kickstart to install the following:
%packages
#core
acpid
bison
cmake
dhcp-common
flex
gcc
gcc-c++
git
libaio-devel
make
man
ncurses-devel
perl
ntp
ntpdate
pciutils
tar
tcpdump
wget
%end
You will find that one of the dependencies of the above list is mysql-libs. I found that my system has a default my.cnf in /etc and this contains:
[mysqld]
dataddir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
When you build from the Generic Linux (Architecture Independent), Compressed TAR Archive your default data directory is /usr/local/mysql/data which conflicts with the /etc/my.cnf already present which defines datadir=/var/lib/mysql. Also the pid-file defined in the same file does not have permissions for the mysql user/group to write to it in /var/run/mysqld.
A quick remedy is to mv /etc/my.cnf /etc/my.cnf.old which should get your generic source procedure working.
Of course the experience is different of you use the source RPMs.
I had the same issue in trying to start the server and followed the "checked" solution.
But still had the problem. The issue was the my /etc/my.cnf file was not pointing to my
designated datadir as defined when I executed the mysql_install_db with --datadir defined. Once I updated this, the server started correctly.
If you have a server which used to happily run MySQL, but now gives this error, then an uninstall and re-install of MySQL is overkill.
In my case, the server died and took a few disk blocks with it. This affected a few files, including /var/lib/mysql/mysql/host.frm and /var/lib/mysql/mysql/proc.frm
Luckily, I could copy these from another server, and this got me past that table error.
I got similar error on overlayfs (overlay2) that is the default on Docker for Mac.
The error happens when starting mysql on the image, after creating a image with mysql.
2017-11-15T06:44:22.141481Z 0 [ERROR] Fatal error: Can't open and lock privilege tables: Table storage engine for 'user' doesn't have this option
Switching to "aufs" solved the issue.
(On Docker for Mac, the "daemon.json" can be edited by choosing "Preferences..." menu, and selecting "Daemon" tab, and selecting "Advanced" tab.)
/etc/docker/daemon.json :
{
"storage-driver" : "aufs",
"debug" : true,
"experimental" : true
}
Ref:
https://github.com/moby/moby/issues/35503
https://qiita.com/Hige-Moja/items/7b1208f16997e2aa9028
In Windows run the following commands in the command prompt as adminstrator
Step 1:
mysql_install_db.exe
Step 2:
mysqld --initialize
Step 3:
mysqld --console
Step 4:
In windows
Step 4:
mysqladmin -u root password "XXXXXXX"
Step 5:
mysql -u root -p
My case on Ubuntu 14.04.2 LTS was similar to others with my.cnf, but for me the cause was a ~/.my.cnf that was leftover from a previous installation. After deleting that file and purging/re-installing mysql-server, it worked fine.