I just installed mysql via homebrew and I wanted to change the location where mysql stores the databases. All the stuff I've found so far online have paths that I don't understand and don't exist on my machine (OSX 10.8).
Any help is greatly appreciated. Thanks.
If you have MySQL running a simple ps ax | grep mysql will yeld the process path.
Otherwise search your fs for mysqld it will take some time but will get the job done:
sudo find / -type f -name "mysqld"
A find / | grep mysql will print every file containing mysql in its name.
Use MySQLWorkbench, it has a nice GUI which lets you configure INNODBs data path and will also help you managing your instances.
Otherwise edit /etc/my.cnf (or create it if you don't have any) insert a [mysqld] section and set innodb_data_home_dir = /path/to/where/you/moved/your/data
[mysqld]
innodb_data_home_dir = /path/to/where/you/moved/your/data
When started via homebrew services:
Stop the server: brew services stop mysql#5.6
Modify the plist file for your installed version, for example: /usr/local/Cellar/mysql#5.6/5.6.43/homebrew.mxcl.mysql#5.6.plist
Look for the --datadir=/usr/local/var/mysql key and set the value to the place you want to store your databases.
Copy over files from /usr/local/var/mysql to your new location.
Restart the server: brew services start mysql#5.6
Related
We have rhel 7.5 64-bit running and created a mount point say called "dbs"... if I were to do a yum install mysql .... I want it to go to my /dbs mount point instead of the default "var/lib/mysql".
In other words, can I modify the target folder where I want it to be installed?
Thank you
You might be able to do this by copying/moving your data to new location
cp /var/lib/mysql /dbs
And updating your /etc/my.cnf file
# vi /etc/my.cnf
datadir=/dbs
Remember to stop and start the server /etc/init.d/mysqld start / stop
For homebrew mysql installs, where's my.cnf? Does it install one?
There is no my.cnf by default. As such, MySQL starts with all of the default settings. If you want to create your own my.cnf to override any defaults, place it at /etc/my.cnf.
Also, you can run mysql --help and look through it for the conf locations listed.
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/etc/my.cnf ~/.my.cnf
The following groups are read: mysql client
The following options may be given as the first argument:
--print-defaults Print the program argument list and exit.
--no-defaults Don't read default options from any option file.
--defaults-file=# Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
As you can see, there are also some options for bypassing the conf files, or specifying other files to read when you invoke mysql on the command line.
The homebrew mysql contains sample configuration files in the installation's support-files folder.
ls $(brew --prefix mysql)/support-files/my-*
If you need to change the default settings you can use one of these as a starting point.
cp $(brew --prefix mysql)/support-files/my-default.cnf /usr/local/etc/my.cnf
As #rednaw points out, a homebrew install of MySQL will most likely be in /usr/local so the my.cnf file should not be added to the system /etc folder, so I’ve changed the command to copy the file into /usr/local/etc.
If you are using MariaDB rather than MySQL use the following:
cp $(brew --prefix mariadb)/support-files/my-small.cnf /usr/local/etc/my.cnf
One way to find out:
sudo /usr/libexec/locate.updatedb
# wait a few minutes for it to finish
locate my.cnf
in my system it was
nano /usr/local/etc/my.cnf.default
as template and
nano /usr/local/etc/my.cnf
as working.
Nothing really helped me - I could not overwrite settings in a /etc/my.cnf file.
So I searched like John suggested https://stackoverflow.com/a/7974114/717251
sudo /usr/libexec/locate.updatedb
# wait a few minutes for it to finish
locate my.cnf
It found another my.cnf in
/usr/local/Cellar/mysql/5.6.21/my.cnf
changing this file worked for me! Don't forget to restart the launch Agent:
launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
Update:
If you have a fairly recent installation of homebrew you should use the brew services commands to restart mysql (use your installed homebrew mysql version, i.e. mysql or mysql#5.7):
brew services stop mysql
brew services start mysql
Since mysql --help shows a list of files, I find it useful to pipe the result to ls to see which of them exist:
$ mysql --help | grep /my.cnf | xargs ls
ls: /etc/my.cnf: No such file or directory
ls: /etc/mysql/my.cnf: No such file or directory
ls: ~/.my.cnf: No such file or directory
/usr/local/etc/my.cnf
For my (Homebrew installed) MySQL 5.7, it seems the files is on /usr/local/etc/my.cnf.
Add another answer cause
The accepted anwser is right. Since we're talking about Homebrew installed mysql, not MySQL installed manually, there's more direct way to find the conf.
The former answers may be a little outdated, Homebrew on M1 Mac is stored in a different location
Conf
The my.cnf is copied by Homebrew to following places during installation
/usr/local/etc/my.cnf for x86 Mac
/opt/homebrew/etc/my.cnf for M1 Mac
Homebrew chooses /usr/local, or /opt/homebrew to store packages, so the default conf files are not stored in /etc/ but /usr/local/etc or /opt/homebrew/etc.
In fact, homebrew changed the -DSYSCONFDIR= (default conf location) flag during compiling mysql from source.
Start the Service
A short answer: run brew info mysql and check the tips.
The recommended way is brew services start mysql, which uses the launchd to manage services. (launchd is deemed a systemd alternative on macOS)
For anyone wanna start it manually, mysql.start without any option is enough to start the service. (mysql.start is a script provided by mysql to help start the service)
On your shell type my_print_defaults --help
At the bottom of the result, you should be able to see the file from which the server reads the configurations. It prints something like this:
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/local/etc/my.cnf ~/.my.cnf
Server version: 8.0.19 Homebrew. macOS Catalina 10.15.5 and installed MySQL via Homebrew. Found this file here:
/usr/local/etc/my.cnf
This solution helped :)
You can find where the my.cnf file has been provided by the specific package, e.g.
brew list mysql # or: mariadb
In addition to verify if that file is read, you can run:
sudo fs_usage | grep my.cnf
which will show you filesystem activity in real-time related to that file.
I believe the answer is no. Installing one in ~/.my.cnf or /usr/local/etc seems to be the preferred solution.
run
sudo find / -name my.cnf
Usually the first result is the correct one.
Should be in
/usr/local/etc/
In case of Homebrew, mysql would also look for my.cnf in it's Cellar directory, for example:
/usr/local/Cellar/mysql/5.7.21/my.cnf
For the case one prefers to keep the config close to the binaries - create my.cnf here if it's missing.
Restart mysql after change:
brew services restart mysql
If you are using mac m1 (Apple silicon), the my.cnf is located at
/opt/homebrew/etc/my.cnf
and can also be found by mysql --help
I have installed MySQL 5.7 using Homebrew
my.cnf file is located in "/opt/homebrew/etc/my.cnf"
For MacOS (High Sierra), MySQL that has been installed with home brew.
Increasing the global variables from mysql environment was not successful. So in that case creating of ~/.my.cnf is the safest option. Adding variables with [mysqld] will include the changes (Note: if you change with [mysql] , the change might not work).
<~/.my.cnf> [mysqld] connect_timeout = 43200 max_allowed_packet =
2048M net_buffer_length = 512M
Restart the mysql server. and check the variables.
y
sql> SELECT ##max_allowed_packet;
+----------------------+ | ##max_allowed_packet |
+----------------------+ | 1073741824 |
+----------------------+
1 row in set (0.00 sec)
$ps aux | grep mysqld
/usr/local/opt/mysql/bin/mysqld --basedir=/usr/local/opt/mysql --datadir=/usr/local/var/mysql --plugin-dir=/usr/local/opt/mysql/lib/plugin
Drop your my.cf file to /usr/local/opt/mysql
brew services restart mysql
I'm trying to access mysql and when I run the mysql command, I get the following.
[root#ip-10-229-65-166
tpdatabase-1.8.0.28356]# mysql
ERROR 2002 (HY000): Can't connect to
local MySQL server through socket
'/var/lib/mysql/mysql.sock' (2)
Doing this returns nothing
[root#ip-10-229-65-166 mysqld]# find
-name mysql*
[root#ip-10-229-65-166 mysqld]#
/etc/init.d/mysql stop
-bash: /etc/init.d/mysql: No such file or directory
[root#ip-10-229-65-173
tpdatabase-1.8.0.28356]# mysql_config
|grep -- --socket
--socket [/var/lib/mysql/mysql.sock]
Maybe a permissions problem?
I do have mysql installed using yum install mysql
I'm running CentOS 5.4 on a Amazon EC2 Cloud Instance
You need to install the server package:
sudo yum install mysql-server
After installation, you have to start the service:
sudo service mysqld start
rm -rvf /var/lib/mysql/ib_logfile*
touch /var/lib/mysql/mysql.sock
touch /var/lib/mysql/mysql.pid
chown -R mysql:mysql /var/lib/mysql
systemctl restart mysql
try this and check the permission of both /var/lib/mysql/mysql.sock and /tmp
We faced a similar problem in my office setup with the same OS. The actual thing that was happening was low space on the server. It is quite strange, but i believe if the server gets full the files cannot be loaded or of some other resort. Please check to be sure the space on the server is enough else you have to try removing the installed mysql and reinstall. Best of luck.
just search for mysqld, this is the server daemon:
find / | grep mysqld
If you found it, the server package may be correctly installed but without initd scripts. For testing, you may start the mysql server by hand executing the above file.
mysql might have been packaged separately as client and server. Check your package repositories to make sure that the server has been installed. The mysql package might only be the client. Check if there's a package called mysql-server or something similar. Check the list of files installed by the mysql package to see if it actually installs the server.
If the files are not even there, it's not a permissions problem. Also, you're running as root.
I recently encountered this problem after an upgrade on Ubuntu 18.04. The solution here solved it https://serverfault.com/a/957723/439448.
Make sure you have privileges to access the /var/lib/mysql/mysql.sock file. And if you still get the error, create a default my.cnf file with
[client]
socket = /path/to/mysql/data/mysql.sock
[mysqld]
server-id = 2
socket = /path/to/mysql/data/mysql.sock
port = 4000 #any port you wish
basedir = /path/to/mysql
datadir = /path/to/mysql/data
and initialize the database again. Make sure you give --defaults-file=/path/to/mysql/my.cnf when you initialize. If you get error saying files exist in /path/to/mysql/data, remove them and try again. Once done, when you run mysql also, give --defaults-file=/path/to/mysql/my.cnf.
Should work.
Before hitting mysql on command prompt make sure your correct my.cnf configuration file is in placed and set the permission of etc folder as
chmod -R 777
etc folder as below list to avoid
error MySQL - ERROR 2002 (HY000):
e.g /etc/my.cnf, /etc/mysql/my.cnf, $MYSQL_HOME/my.cnf [datadir]/my.cnf ~/.my.cnf
I just installed mysql on a mac running 10.6. The mysql version is 5.1.56. I need to have mysql run on port 3307. This article says we can change the port by modifying this file:
# vi /etc/my.cnf
http://www.cyberciti.biz/faq/change-default-mysql-port-under-linuxunix/
but there is no such file in /etc. I can see mysql is running ok because I can connect to it just fine, is the way we change the port # different now?
Thanks
Looks like the new installers are adding the port as 3307
To change that follow below steps
sudo vi /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist
change 3307 from this line <string>--port=3307</string> to 3306
On OSX you can create /etc/my.cnf if it does not exist. You can base it on samples found in /usr/local/mysql/support-files. Don't forget to restart MySQL for your my.cnf to take effect.
On MacOs High Sierra running MySql v8 server, you need the following:
Edit /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist
Under ProgramArguments, you will see many entries with
<string>...</string> etc,
Add the following line: <string>--port=16000</string>
Also, to restart you need to do the following:
launchctl unload -F /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist
and then
launchctl load -F /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist
I hope this helps.
By default, the install doesn't create a my.cnf file on Snow Leopard. You can create one yourself under /etc or you can copy one from /usr/local/mysql/support-files/
Then run :
sudo cp my-huge.cnf /etc/my.cnf
Check out the explanation here
I experienced a similar problem and here's what worked for me. If you installed MySQL using brew install mysql then this should work for you.
For context, I'm using macOS Monterey 12, Homebrew 3.4.5, and MySQL 8.0.
MySQL is installed in:
/opt/homebrew/Cellar/mysql/8.0.28_1/
The configuration file my.cnf is located at /opt/homebrew/etc.
You can change the default port by specifying a new port in the my.cnf file.
First navigate to the homebrew etc folder
cd /opt/homebrew/etc
Append the new port value to the my.cnf file
echo "port = 3307" >> my.cnf
restart the MySQL service
brew services restart mysql
I tried a long time to get mysql running on my Mac (OSX 10.11.13) with mysql 5.7.11 to develop wordpress sites on my local machine...
When I used the app duplicator to migrate a website to my local machine I got errors during the database import. This was caused by to stricked sql_mode...
The trick that made it was:
Going to
/usr/local/mysql-5.7.11/support-files/
and copy the content from my-default.cnf
and paste it to
/etc/my.cnf (if this file does not exist create it!)
at the very last line of my.cnf I added:
sql_mode="NO_ENGINE_SUBSTITUTION"
Et voilà: sql_mode is changed permanently!
Whoop whoop!
I installed docker and was having problems with my company wanting to use port 3306 (which is what I was using privately).
Similar problem to you. So this is what I did to fix it.
sudo vi /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist
Then you get a long list of script tags and
Insert <string>--port=3307</string> into the array. Make sure you put it under the other strings and within the array.
I changed my port to 3307 instead of 3306 and now docker is working.
How do I know which configuration file is used by MySQL currently? Is there any command or something to find it out?
The information you want can be found by running
mysql --help
or
mysqld --help --verbose
I tried this command on my machine:
mysql --help | grep "Default options" -A 1
And it printed out:
Default options are read from the following files in the given order:
/etc/my.cnf /usr/local/etc/my.cnf ~/.my.cnf
See if that works for you.
mysqld --help --verbose will find only location of default configuration file. What if you use 2 MySQL instances on the same server? It's not going to help.
Good article about figuring it out:
"How to find MySQL configuration file?"
If you are using terminal just type the following:
locate my.cnf
You can use the report process status ps command:
ps ax | grep '[m]ysqld'
You should find them by default in a folder like /etc/my.cnf, maybe also depends on versions. From MySQL Configuration File:
Interestingly, the scope of this file
can be set according to its location.
The settings will be considered global
to all MySQL servers if stored in
/etc/my.cnf. It will be global to a
specific server if located in the
directory where the MySQL databases
are stored (/usr/local/mysql/data for
a binary installation, or
/usr/local/var for a source
installation). Finally, its scope
could be limited to a specific user if
located in the home directory of the
MySQL user (~/.my.cnf). Keep in mind
that even if MySQL does locate a
my.cnf file in /etc/my.cnf (global to
all MySQL servers on that machine), it
will continue its search for a
server-specific file, and then a
user-specific file. You can think of
the final configuration settings as
being the result of the /etc/my.cnf,
mysql-data-dir/my.cnf, and ~/.my.cnf
files.
There are a few switches to package managers to list specific files.
RPM Sytems:
There are switches to rpm command, -q for query, and -c or --configfiles to list config files. There is also -l or --list
The --configfiles one didn't quiet work for me, but --list did list a few .cnf files held by mysql-server
rpm -q --list mysql-server
DEB Systems:
Also with limited success: dpkg --listfiles mysql-server
you can find it by running the following command
mysql --help
it will give you the mysql installed directory and all commands for mysql.
login to mysql with proper credential and used mysql>SHOW VARIABLES LIKE 'datadir'; that will give you path of where mysql stored