I installed LAMP on Ubuntu 12.04 LTS (Precise Pangolin) and then set root password on phpMyAdmin. I forgot the password and now I am unable to login. When I try to change password through terminal I get:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
How can I fix this? I am unable to open LAMP, uninstall it or reinstall it.
I once had this problem and solved it by installing mysql-server, so make sure that you have installed the mysql-server, not the mysql-client or something else.
That error means the file /var/run/mysqld/mysqld.sock doesn't exists, if you didn't install mysql-server, then the file would not exist. So in that case, install it with
sudo apt-get install mysql-server
But if the mysql-server is already installed and is running, then you need to check the config files.
The config files are:
/etc/my.cnf
/etc/mysql/my.cnf
/var/lib/mysql/my.cnf
In /etc/my.cnf, the socket file config may be /tmp/mysql.sock and in /etc/mysql/my.cnf the socket file config may be /var/run/mysqld/mysqld.sock. So, remove or rename /etc/mysql/my.cnf, let mysql use /etc/my.cnf, then the problem may solved.
sudo apt-get install mysql-server to install mysql on ubuntu –
Cory etc/mysql/mysql.conf.d/mysqld.cnf . It was the only file where /var/run/mysqld/mysqld.sock was present –
Myeshamyhre Try this:
mysql -h 127.0.0.1 -P 3306 -u root -p <database>
Also (to see if it's running):
telnet 127.0.0.1 3306
Probably it is just a misconfiguration in the my.cnf file, in /etc/somewhere (depending on the Linux distribution).
/etc/my.cnf and commented #bind-address = 127.0.0.1 Reference 1 Reference 2. Then I could connect. After this, I realized I was getting now this 2002 error which took me to this answer and now it's working again.Definitely I agree with you by getting an explanation about why just typing mysql without -h throws an error. –
Scholar mysql -h localhost does not work. Make sure to use mysql -h 127.0.0.1 as specified in the answer. –
Purpleness I am seeing all these answers, but none offer the option to reset the password and no accepted answer. The actual question being he forgot his password, so he needs to reset, not see if it's running or not (installed or not) as most of these answers imply.
Follow these steps (can be helpful if you really forget your password and you can try it anytime, even if you're not in the situation at the moment):
Stop mysql
sudo /etc/init.d/mysql stop
Or for other distribution versions:
sudo /etc/init.d/mysqld stop
Start MySQL in safe mode
sudo mysqld_safe --skip-grant-tables &
Log into MySQL using root
mysql -u root
Select the MySQL database to use
use mysql;
Reset the password
-- MySQL version < 5.7
update user set password=PASSWORD("mynewpassword") where User='root';
-- MySQL 5.7, mysql.user table "password" field -> "authentication_string"
update user set authentication_string=password('mynewpassword') where user='root';
Flush the privileges
flush privileges;
Restart the server
quit
Stop and start the server again
Ubuntu and Debian:
sudo /etc/init.d/mysql stop
...
sudo /etc/init.d/mysql start
On CentOS, Fedora, and RHEL:
sudo /etc/init.d/mysqld stop
...
sudo /etc/init.d/mysqld start
Login with a new password
mysql -u root -p
Type the new password and enjoy your server again like nothing happened
This was taken from Reset a MySQL root password.
repair table user use_frm worked for me to solve this problem. - #4298092 –
Elmaelmajian update user set authentication_string=password('mynewpassword') where user='root'; –
Circumscissile passowrd() argument. –
Inexistent In my case it was that the disk was full and mysqld couldn't start anymore.
Try to restart mysql service.
> service mysql restart
or
> service mysql stop
> service mysql start
If it doesn't recognize stop command then it's definitely the disk space. You should make some space in the partition mysql is allocated or make the disk larger.
Check the disk space with
> df -h
Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xeu mysql.service" for details. –
Ghostwrite I tried the following steps:
super user or use sudo/etc/mysql/my.cnf using geditbind-address, and change its value to the database server host machine's IP address. For me, it was localhost or 127.0.0.1sudo service mysql startAnd it worked for me.
I fixed this problem by executing the following command:
mysql.server start
And if you are on a mac and used brew to install mysql, simply use:
brew services start mysql
I had a similar problem. mysql wouldn't start:
sudo service mysql start
start: Job failed to start
If I disabled apparmor:
sudo aa-complain /etc/apparmor.d/*
the problem went away. The issue was that mysqld was trying to access /run/mysqld/mysqld.sock but the apparmor profile only gave permission to /var/run/mysqld/mysqld.sock (/var/run is symlinked to /run, so these are actually the same). Not sure why mysqld isn't using the var path since that's what's set in all the configuration files, but you can fix the problem by adding the following to /etc/apparmor.d/usr.sbin.mysqld
/run/mysqld/mysqld.pid rw,
/run/mysqld/mysqld.sock rw,
I solved this by killing the mysql process:
ps -ef | grep mysql
kill [the id]
And then I started the server again with:
sudo /etc/init.d/mysql restart
But start works as well:
sudo /etc/init.d/mysql start
Then I logged in as admin, and I was done.
Somehow the MySQL server process did not create the socket, or the client is looking for the socket in the wrong place.
My first suggestion would be to check if the MySQL server is running. Second suggestion might be, is the MySQL server running on another host? If so, add the -h <hostname> flag to your MySQL client in the terminal.
If MySQL is indeed running, and running locally, check your my.cnf file. There should be a line like
socket = /var/run/mysqld/mysqld.sock
See if that matches the socket location that you mentioned in your post.
From experience, I would say the most likely scenario is your MySQL server either is not running at all or is not running on the same host as where you run your MySQL client from the terminal.
I just experienced the same issue after I had to restart my production server. I am running Debian 8.1 (Jessie) on a DigitalOcean droplet.
This is what I did to resolve my issue:
Check if the file /var/run/mysqld/mysqld.sock exists. If it doesn't, manually create it by entering touch /var/run/mysqld/mysqld.sock (which is what I had to do).
So the MySQL process can use this file. Change ownership of said file by entering chown mysql /var/run/mysqld/mysqld.sock.
Once '2' has been done, restart the MySQL service by entering service mysql restart or /etc/init.d/mysql restart.
After going through the above steps, my issue was solved. I rarely have this issue, and there is probably a better way, so by all means provide constructive feedback if need be :).
Check the "bind-adress" parameter in my.cnf.
Else try with the command:
mysql -h 127.0.0.1 -P 3306 -u root -p
-h for host 127.0.0.1, that is, localhost
-P (notice -P as uppercase) for port 3306, that is, the default port for MySQL
Your mysql-server might not be running. Ensure it runs by typing mysql.server start into the terminal.
If you're using Amazon EC2, and you're having this problem on the instance, then you only need to do:
sudo yum install mysql-server
sudo service mysqld restart
Amazon EC2 doesn't have a server installed (only the client is installed), so in case of that you need to install that on your instance, and after that try
mysql -u root -p
to check if that worked.
Fist,try to restart it with
service mysql stop
service mysql start
If above not resolve the issue, now let's go...
Uninstall completely MySQL
sudo apt-get remove --purge mysql\*
reinstall it
sudo apt install mysql-server mysql-client
test if it run
sudo mysql
Install php drivers
sudo apt install php7.4 php7.4-fpm php7.4-mysql php7.4-cgi php7.4-cli php7.4-common
You can replace php7.4 by php7.x or php8.0.12 or later Very nice !
❗️Be careful, you lose your data if they are not saved. Please backup your data if possible yet.
I think whenever you get the error
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'
I will recommend first to check whether your mysql daemon is running... Most of the time it will not running by default. You can check it by /etc/init.d/mysqld status.
If it's not running then start it first:
.../etc/init.d/mysqld start.
I bet it will 110% work.
sudo /etc/init.d/mysql start is the correct solution also if you are using WSL since the upstart service is not supported: github.com/Microsoft/WSL/issues/745 –
Premer service mysqld start –
Drugget Instead of using localhost:
mysql -u myuser -pmypassword -h localhost mydatabase
Use 127.0.0.1
mysql -u myuser -pmypassword -h 127.0.0.1 mydatabase
(also note, no space between -p and mypassword)
Enjoy :)
127.0.0.1 works while localhost does not?! –
Amenity Make sure you have backups of important databases and then try uninstall MySQL related stuff:
apt-get remove --purge mysql\*
Then install it again:
apt-get install mysql-server mysql-client
This worked for me and data was kept.
If PHP MySQL shows errors you might have to reinstall PHP MySQL:
apt-get install php5-fpm php5-mysql
Here's what worked for me:
ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
service mysql restart
This creates a link.
I also facing same problem it will be occur if your mysql server is not running by default it will again stop after some sec so you again run ($ sudo service mysql start ) command you can change if know.
for that use command
$ sudo service mysql start
(put user password if required because we use sudo )
and then run
$ sudo mysql -u root -p (put user password if required )
now you got your database
I got this problem too, but I just did:
sudo service mysql restart
It worked for me.
It seems your MYSQL is stopped. use below command to start MySQL again
sudo service mysql start
If you have XAMPP installed on your Linux machine, try to copy your my.cnf file from /opt/lampp/etc/my.cnf to /etc/my.cnf.
Then, run the mysql -u root again... You should now have the correct socket and be able to run the MySQL client.
I FOUND THE SOLUTION
Before firing the command : mysql_secure_installation
sudo systemctl stop mariadb sudo systemctl start mariadbmysql_secure_installationThen it will ask root password and you can simply press Enter and set your new root password.
If your installation was recent, you should to confirm if your installation is the installation SERVER... as mysql-server-5.5.. Maybe you installed only "mysql" .. this is only client instead of the server.
On Debian server Jessie, my working solution was to simply do
service mysql restart
service mysql reload
as root user
i solved this problem with restart mysql
/etc/init.d/mysql stop
and
/etc/init.d/mysql start
that's it.
You are missing permission to create /var/run/mysqld directory.So please create and give permission as following.
chown 750 /var/mysql instead of chmod 750 /var/mysql, and suddenly the user 750 owned the folder instead of the user mysql. The server immediately crashed because it no longer had write access to the mysql folder. To fix it, I ran chown -R mysql:mysql /var/mysql to restore the correct permissions, then did service mysql start to restart the service. –
Eolian In my case, the default port 3306 was being used by some other process and thus it was not starting. After I stopped the other service and did sudo service mysql start, it worked fine. BTW, you can use something like sudo lsof -Pn -iTCP:3306 to see who may be using the port.
Check if you have the correct rights:
sudo chmod 755 /var/lib/mysql/mysql
I had the same problems and this worked for me. After doing this I was able to start MySQL.
In my case it worked by doing some R&D:
I am able to connect to MySQL using
root-debian#mysql -h 127.0.0.1 -u root -p
But it's not working with mysql -u root -p.
I did not find any bind-address in my.cnf. So I outcommented the parameter socket=/var/lib/mysql/mysqld.sock in my.cnf which was causing me a problem with login.
After restarting the service it went fine:
root@debian:~# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.6.19 MySQL Community Server (GPL)
In my case, It seems like I wasnt really able to kill the mysql process, when I run
sudo service mysql stop
ps -ef | grep mysql
The mysql process was always there, it looks like it was blocking the socket file and new mysql process wasnt able to create it itself.
so this helped
cd /var/run
sudo cp mysqld/ mysqld.bc -rf
sudo chown mysql:mysql mysqld.bc/
sudo service mysql stop
sudo cp mysqld.bc/ mysqld -rf
sudo chown mysql:mysql mysqld -R
sudo /usr/sbin/mysqld --skip-grant-tables --skip-networking &
Now Im able to log in database using
mysql -u root
Then to update root password:
UPDATE user SET authentication_string=password('YOURPASSWORDHERE') WHERE user='root';
FLUSH PRIVILEGES;
PS: I had trouble updating root passwod, seems like problem with "auth_socket" plugin, so I had to create new user with full privileges
insert into user set `Host` = "localhost", `User` = "super", `plugin` = "mysql_native_password", `authentication_string` = NULL, `password_expired` = "N", `password_lifetime` = NULL, `account_locked` = "N", `Select_priv` = "Y",
`Insert_priv` = "Y", `Update_priv` = "Y", `Delete_priv` = "Y", `Create_priv` = "Y", `Drop_priv` = "Y", `Reload_priv` = "Y", `Shutdown_priv` = "Y", `Process_priv` = "Y", `File_priv` = "Y",
`Grant_priv` = "Y", `References_priv` = "Y", `Index_priv` = "Y", `Alter_priv` = "Y", `Show_db_priv` = "Y", `Super_priv` = "Y", `Create_tmp_table_priv` = "Y", `Lock_tables_priv` = "Y",
`Execute_priv` = "Y", `Repl_slave_priv` = "Y", `Repl_client_priv` = "Y", `Create_view_priv` = "Y", `Show_view_priv` = "Y", `Create_routine_priv` = "Y", `Alter_routine_priv` = "Y",
`Create_user_priv` = "Y", `Event_priv` = "Y", `Trigger_priv` = "Y", `Create_tablespace_priv` = "Y";
This creates user "super" with no password and then you can connect with mysql -u super
use mysql; <br> and the you can now use <br> UPDATE user SET authentication_string=password('YOURPASSWORDHERE') WHERE user='root'; FLUSH PRIVILEGES; –
Avarice By experience I say that you need to check if the server is running first and then try configuring MySQL. The last solution is to re-install MySQL.
The same on Ubuntu 14.04 (Trusty Tahr).
If you have installed XAMPP, installing mysql-server isn't the solution, because you'll access another MySQL!
You have to use the right socket to access. Usually it is this:
/opt/lampp/var/mysql/mysql.sock
Instead, change it to:
/var/run/mysqld/mysqld.sock
I had the same issue. Sometimes this happens if your MySQL service is turned down.
So you have to start it:
sudo service mysql start
Open the terminal and type:
sudo apt-get purge mysql-client-core-5.6
sudo apt-get autoremove
sudo apt-get autoclean
sudo apt-get install mysql-client-core-5.5
sudo apt-get install mysql-server
Both MySQL database core client and MySQL Server packages will be the same version 5.5. MySQL Client 5.5 and MySQL Server 5.5 are the current "best" versions of these packages in Ubuntu 14.04 as determined by the package maintainers.
If you would rather install MySQL Client 5.6 and MySQL Server 5.6 you can also find the mysql-client-core-5.6 and mysql-server-5.6 packages in the Ubuntu Software Center. The important thing is that the client and server version numbers match in either case.
This worked for me.
For CentOS Linux release 7.3
The mysql.sock file path is /var/lib/mysql/mysql.sock
Edit /etc/my.cnf file and put below entry
This will solve your problem.
[client]
user=root
password=Passw0rd
port=3306
socket=/var/lib/mysql/mysql.sock
[mysqld]
bind-address=0.0.0.0
After this restart the service
service mysql restart
I had the same problem. After much searching I didn't find any answer.
At last, I checked the /tmp directory, and its permissions were 755. I changed its permissions to 777 and mysqld started well without any problem.
For me an update solved the problem:
On Ubuntu:
sudo apt-get update
sudo apt-get upgrade
On CentOS:
sudo yum update
It works now...
I have followed the tutorial Installing MariaDB 10.1.16 on Mac OS X with Homebrew to overcome this issue.
But don't forget to kill or uninstall the old installation of MariaDB.
This issue happen because MySQL server was not started. check active status using below command.
service mysql status
If the active status is stop, then ry starting the MySQL server,
service mysql start
Try restarting the server with
sudo /usr/local/mysql/support-files/mysql.server start
If there is any error then follow the below steps
mysqldYou will see the the below log. Notice the highlighted portion of the MySQL directory here
mysqld: Can't change dir to '/usr/local/mysql-5.7.14-osx10.11-x86_64/data/' (Errcode: 13 - Permission denied) 2016-10-04T14:09:19.392581Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2016-10-04T14:09:19.392847Z 0 [Warning] Insecure configuration for --secure-file-priv: Current value does not restrict location of generated files. Consider setting it to a valid, non-empty path. 2016-10-04T14:09:19.392921Z 0 [Note] mysqld (mysqld 5.7.14) starting as process 1402 ... 2016-10-04T14:09:19.397569Z 0 [Warning] Can't create test file
/usr/local/mysql-5.7.14-osx10.11-x86_64/data/Sudharshan.lower-test
2016-10-04T14:09:19.397597Z 0 [Warning] Can't create test file /usr/local/mysql-5.7.14-osx10.11-x86_64/data/Sudharshan.lower-test
2016-10-04T14:09:19.397712Z 0 [ERROR] failed to set datadir to /usr/local/mysql-5.7.14-osx10.11-x86_64/data/
2016-10-04T14:09:19.397776Z 0 [ERROR] Aborting
2016-10-04T14:09:19.397795Z 0 [Note] Binlog end
2016-10-04T14:09:19.397925Z 0 [Note] mysqld: Shutdown complete
sudo chown -R _mysql:_mysql /usr/local/mysql-5.7.14-osx10.11-x86_64Note the MySQL folder path /usr/local on the the previous log, and in my case it was mysql-5.7.14-osx10.11-x86_64, and you have to update it based on the log you get on your machine to provide read access to the MySQL directory
sudo /usr/local/mysql/support-files/mysql.server startStarting MySQL
SUCCESS!
I got exactely the same error when I have stopped mysql service, and here how to solve it: by (re)starting mysql using these commands:
sudo systemctl start mysql
or
sudo systemctl restart mysql
sudo systemctl start mysql worked for me as well on Lubuntu 20.04. –
Neff Installing mysql-server solved the issue
sudo apt-get install mysql-server
For me mysql wasn't running so I fixed it with
sudo /etc/init.d/mysql start
It might be silly to some extent. Like you forgot to start the server first. If you run the mysql -u root -p command before starting the server, you gonna get the same error.
Just start the server first
sudo service mysql startYou could first check whether the service is running, with:
ps ax | grep mysql
I got this response:
6104 pts/0 S 0:00 /bin/sh /usr/bin/mysqld_safe
6431 pts/0 Sl 0:01 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/mysql/plugin --user=mysql --pid-file=/var/run/mysqld/m
No response means the service isn't running, so do:
service mysql start
sudo /etc/init.d/mysqld status or sudo service mysqld status –
Alms In my case, the problem was page corruption in all my databases (check the mysql error log).
I solved it with Forcing InnoDB Recovery. The trick is editing /etc/mysql/my.cnf and adding
innodb_force_recovery = 4
just below
[mysqld]
And then restart mysql. After checking everything works correctly now, remove the line back again.
Just copy your /opt/lampp/etc/my.cnf file to /etc/mysql/my.cnf.
And in the terminal type:
mysql -u root
You will be getting the mysql> prompt:
mysql> Update mysql.user set Password=PASSWORD('your_password') where user='root';
mysql> FLUSH PRIVILEGES;
Install mysql-server:
sudo apt-get install mysql-server
enter password as root
Login:
mysql -u root -p root
Here -u user name and -p password was given while installing MySQL server. It will work as it has worked for me.
My server storage was full, this was preventing Mysql from starting. Got the idea from here. Increasing the HD and rebooting fixed the issue.
In my case, I'm not able to access mysql and after 3 days research, I have got a solution. This is perfect solution because I have searched /var/run/mysqld/mysqld.sock and I did not find the folder. You can run on putty the commands listed below.
sudo mkdir /var/run/mysqld/
sudo chown -R mysql:mysql /var/log/mysql
sudo mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --socket=/var/run/mysqld/mysqld.sock
sudo /etc/init.d/mysql restart
You will save your valuable time.
I can't explain it, but in kubuntu 12.04.2 after
sudo apt-get autoremove linux-headers-3.2.0-37 linux-headers-3.2.0-37-generic
it started to work
If you're using Ubuntu, it could be a matter of privileges.
Check your directory privileges. It's not enough to be in the root group, also use a chmod on directories which MySQL writes (for example, /var/run/mysqld/ for the creation of the mysqld.pid file).
This was helpful for me.
To prevent the problem from occurring, you must perform a graceful shutdown of the server from the command line rather than powering off the server.
shutdown -h now
This will stop the running services before powering down the machine.
Based on Centos, an additional method for getting it back up again when you run into this problem is to move mysql.sock:
mv /var/lib/mysql/mysql.sock /var/lib/mysql/mysql.sock.bak
service mysqld start
Restarting the service creates a new entry called mqsql.sock
I just had this problem now and solved it.
Although you installed mysql-server, the daemon needs to be running in order for the client to connect to it.
First check to see if mysql server is running:
netstat -tap | grep mysql
You should see something like this:
$ sudo netstat -tap | grep mysql
tcp 0 0 localhost:mysql *:* LISTEN 6639/mysqld
If you don't have the server running, start the daemon by the following command:
/etc/init.d/mysql restart
This should solve your problem if it's installed.
You are running locally, meaning that your client runs on the same machine as your server.
Make sure that your Unix user can actually reach/read /var/run/mysqld/mysqld.sock:
ls -als /var
ls -als /var/run
ls -als /var/run/mysqld
ls -als /var/run/mysqld/mysqld.sock
If not, check with your system administrator or database administrator to provide adequate read/execute access to those directories, or move the socket file elsewhere.
Also check your my.conf (/etc/mysql/my.cnf) and see if bind-address is set to 127.0.0.1.
If not, this might cause this issue.
I had the same issue. I found this.
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’
This is because you are not running the mysqld daemon before launching the MySQL client. The file /var/lib/mysql/mysql.sock will be automatically created upon running the first instance of MySQL.
To fix:
First start the MySQL daemon, then type mysql:
/etc/init.d/mysqld start
mysql
By default, the root password is empty for the MySQL database. It is a good idea to change the MySQL root password to a new one from a security point of view.
mysql> USE mysql;
mysql> UPDATE user SET Password=PASSWORD('newpassword') WHERE user='root';
mysql> FLUSH PRIVILEGES;
Once done, check by logging in:
mysql -u root -p
Enter Password: <your new password>
Starting mysqld: [ OK ] but still its when i run mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) –
Tequilater This answer is related to updating to MySQL 5.6 on machines with a small amount of RAM
I had the same problem when upgrading from MySQL 5.5 to 5.6 on my Debian 8 (Jessie). MySQL was not started (the status was showing active/exited) and simply making service mysql start did not work, because as I found from the /var/logs/mysql/error.log log file:
InnoDB: Initializing buffer pool, size = 128.0M
InnoDB: mmap(136019968 bytes) failed; errno 12
Cannot allocate memory for the buffer pool
The memory was not enough: I had only 256 MB of RAM.
In MySQL there is a setting, performance_schema. By default, it is turned off in MySQL 5.5.
https://dev.mysql.com/doc/refman/5.5/en/performance-schema-startup-configuration.html
But in MySQL 5.6 the default is on, and simply by adding the following line in /etc/mysql/my.cnf file and restarting, it worked.
performance_schema = off
Warning: Turning this setting off you might experience performance issues, but I guess in a development environment it won't be a problem.
Also, here is an article that might be helpful configuring MySQL to use minimal memory, Configuring MySQL to use minimal memory (web archive link in case the original link expires in the future https://web.archive.org/web/20201112041608/http://www.tocker.ca/2014/03/10/configuring-mysql-to-use-minimal-memory.html).
An advice: Always ask MySQL what the problem is. In my case, less /var/log/mysql/error.log and see this:
2015-07-28 12:01:48 23224 [ERROR] /usr/sbin/mysqld: unknown variable 'log_slow_queries=/var/log/mysql/mysql-slow.log'
2015-07-28 12:01:48 23224 [ERROR] Aborting
It is complaining, because I uncommented this option in my.cnf, but after commenting this option, it started without any problem.
For me it was:
Open /etc/mysql/my.cnf or /etc/my.cnf and search for 'bind-address'. It was 127.0.0.1. I converted it to localhost, so the line result should be 'bind-address = localhost'.
Otherwise, you should run the your MySQL server with an IP address that existed in the bind-address directive, i.e. mysql -h 127.0.0.1.
Simple solution on my server: After migrating to a new Debian 7 server with my MySQL databases, the second local IP address, 127.0.1.1, was missing in my hosts file. Adding this resolved the warnings:
echo -e "\n127.0.1.1 $(hostname)" >> /etc/hosts
In Ubuntu 18:10 Linode 1GB Ram, I experienced this error. After examining /var/log/mysql/error.log , I came across this:
[Note] InnoDB: innodb_empty_free_list_algorithm has been changed to legacy because of small buffer pool size. In order to use backoff, increase buffer pool at least up to 20MB.
I upgraded my linode to 2GB and restarted mariadb with sudo mysql. Next mysql_secure_admin ran, but the root password did not set for the user-as ususl unitl changing the root user to use the mysql_native_password plugin. Not sure, but it appears that the sock was created, but the server shutdown due to the lack of memory in my VPS.
In my case, i had files corrupted in my folder of mysql data
mv /var/lib/mysql /var/lib/mysql_old
so as i had a backup, i moved the directory to "_old", and started the docker again. it created a new folder mysql with clean data, and the socket worked.
In my case I was missing mysql-server. So after installing it via sudo apt-get install mysql-server I was able to connect again.
For me, on CentOS, I had to restart the mariadb service like this :
systemctl start mariadb.service
In my case my problem was that I was trying to access from my linux terminal, and not from my docker container with the mysql.
If your server/db was working fine and suddenly this issue appear, then just try restarting your db server. For Centos i do with below command and my issue 'connection refused' 'Cann't connect to local mysql through socket' fixed
sudo systemctl start mysqld
service mariadb start –
Mojica Please ensure that your bind-address is set to 'localhost'. This issue could arise from a misconfiguration where the bind-address is not properly set.
I solved this problem by removing this line from my /etc/mysql/my.conf in the mysqld section ([mysqld]):
default-character-set=utf8
Restart and it works fine.
You should verify the owner of the group for /var/run/mysqld. If it isn't mysql.mysql, then do:
su root
chown mysql.mysql /var/run/mysqld
Upgrading MySQL fixed it for me. On RHEL-based servers, just run:
sudo yum upgrade mysql-server
Did you check if LAMPP is running?
sudo bash <path>/lampp start
For me, path is
sudo bash /opt/lampp/lampp start
It may be an issue with the configuration file. I had a similar problem, and I couldn't find a solution on the web. I noticed that I had two my.cnf files, one in /etc/mysql and the other in /etc.
Follow the steps below:
Check for my.cnf files on your computer using locate my.cnf.
If there are two entries, i.e. /etc/my.cnf and /etc/mysql/my.cnf,
rename /etc/mysql/my.cnf to something else, e.g /etc/mysql/my.cnf.old
Try to run MySQL again.
sudo touch /var/lib/mysql/.force_upgrade
sudo rcmysql restart
worked for me when I had this issue
I had this on Ubuntu and as I've figured out, there was more than one instance of mysqld.
It looked like the previous one had not been completely stopped, while the new one has already started. Running '/etc/init.d/mysql stop' didn't help, it was always returning 'OK' and a new instance has been launched automatically immediately after that:
$ sudo /etc/init.d/mysql stop
* Stopping MySQL database server mysqld [ OK ]
$ pgrep mysql
28315
$ sudo /etc/init.d/mysql stop
* Stopping MySQL database server mysqld [ OK ]
$ pgrep mysql
28570
$ sudo /etc/init.d/mysql stop
* Stopping MySQL database server mysqld [ OK ]
$ pgrep mysql
28763
..... etc ...
Fortunately, the following command has fixed the problem:
$ sudo service mysql stop
mysql stop/waiting
$ ps -ef | grep mysql
29841 26858 0 10:59 pts/8 00:00:00 grep --color=auto mysql <--- IT's gone !
After that I was able to start mysql again and see that mysql.sock has been successfully created.
In /etc/mysql/my.cnf, check the last line be:
!includedir /etc/mysql/conf.d/
I was having this problem too and neither of these answers helped me. The issue was different, but the error was the described by the OP.
I check the logs of MySQL in /var/log/mysql, and I saw this:
150309 5:03:19 [ERROR] /usr/sbin/mysqld: unknown variable 'lower_case_tables_names=1'
I opened the /etc/mysql/my.cnf file and outcommented that line #. After doing that, I was able to connect to the database.
Honestly I don't know what the problem was. The linode server was scheduled to restart due to maintenance, and this error came out of nowhere.
This error can also occur if you try to change the directory where the database is stored, but imput the wrong directory in the configuration file (like a typo in the second drive as D instead of the accurate D_). Instead of telling you the typo directory does not exist, it will tell you that you lack permission to access it (leading you to try to change the permissions for the typo directory, which it will let you do). So if you get this error while changing directories, double check the configuration file and make sure you don't have a typo.
I my case it was just because mysql was stopped because of the missing /var/log/mysql folder defined in /etc/mysql/my.cnf. After creating it I could start mysql and it ran as usual.
This answer is likely to drown here, but maybe somebody stumbles upon it accidentally.
In my case, SELinux prevented the user/application from connecting to the MySQL (MariaDB) server socket. On RHEL, check /var/log/audit/audit.log if you have SELinux enabled.
SOLUTION 1 Purge out (or remove if you want to keep databases) any mysql packages to repeat the installation anew:
sudo apt purge "mysql*"
-Autoremove packages
sudo apt autoremove
-Stop the apparmor service
sudo systemctl stop apparmor
-Make apparmor drop its profiles (I thought with stop it was enough, but for me it wasn't. With systemctl it doesn't work)
sudo service apparmor teardown
-Reinstall mysql-server
sudo apt install mysql-server
-Install apparmor-utils, to create a profile for mysql in apparmor that allows mysql to run
sudo apt install apparmor-utils
-Check the status of mysql-server (must be Active(running))
sudo systemctl status mysql
-Generate a profile for mysql in apparmor
sudo aa-genprof mysql
-In other terminal run mysql (enter root password)
mysql -u root -p
-do things in MySQL while apparmor is generating the profile in the other terminal
mysql> CREATE DATABASE fooDB
-Swith to the other terminal and press "s" (the prompt tells you it's for "scan")
-Say yes to the policies from apparmor you see fit (I guess all of them for mysql), say yes pressing "a" for Allow
-Press "f" to Finish the apparmor profile
-Restart the apparmor service
sudo systemctl start apparmor
-Check to see if you still can use mysql in the other terminal
mysql>exit
mysql -u root -p
If all is well you can use mysql from the command line.
Another cause of this issue, surprisingly, is the deletion of the folder /var/log/mariadb This was my case after i deleted this log folder. After the creation, the error disappeared.
I had previously this problem in Kubuntu 20.04. How It solved for me was to just run:
sudo dpkg --configure -a
The cause was that dpkg had crashed.
I had the problem other time, and I solved it by running:
sudo /etc/init.d/mysql start
Think the service was stopped.
I faced same issue and the problem was that mysql-server was installed but it was not running.
Try, service mysql start Or systemctl start mysql
You can check the logs /var/log/mysql.log
for me it was not working bcs of this error:
Cannot allocate memory for the buffer pool error
I added this line in /etc/my.cnf and started service:
innodb_buffer_pool_size=100M
I was facing this issue in termux for mariadb, which resolved my issue is these following two lines of command -
pkill mysql
mysqld_safe -u root
I have faced the same problem. For me, I loaded a snapshot of Garuda Linux and I haven't restored it and thus getting the mentioned error.
The fix for this is to restore the snapshot. Once it's done everything will be fine.
WordPress users take note - all of these answers refer to a non-running or failing MySQL or MariaDB install and when using WordPress that can mean that you just updated a Plugin and it caused the database to fail. The fix, in that case, is to disable the offending Plugin and (sometimes needed) restart the server. In your wp-content/plugins folder (you can get there in a command line, with FTP like FileZilla, or with the Files function on your cPanel) you will find all of the plugins. You can rename the offending one and it will be automatically disabled in WordPress. You can rename them all (or remove them to another folder) and this will disable all of them so that you can move them in one at a time to find the one that is killing your MySQL if you have no idea what the offending plugin is. All of your plugin settings are stored in the database, so you will not lose anything by disabling them (as long as you move the plugin back in the plugins folder or rename it the way it was). Once MySQL is not being clobbered anymore the database will be available and you will not have to do any reinstall (other than perhaps to go back to the previous version of the offending plugin).
You could resolve the issue by using the following commands
sudo chown -R $USER:$GROUP /var/lib/mysql
sudo chown -R $USER:$GROUP /var/log/mysql
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