Mysql server on MAMP won't start

问题

My Mysql server on MAMP won't start. This is the error:

161224 00:15:00 mysqld_safe Logging to '/Applications/MAMP/logs/mysql_error_log.err'. 161224 00:15:00 mysqld_safe Starting mysqld daemon with databases from /Applications/MAMP/db/mysql56 161224 00:15:01 mysqld_safe mysqld from pid file /Applications/MAMP/tmp/mysql/mysql.pid ended

I already tried the following commands:

> ps aux | grep mysql
> lsof -i
> sudo killall -9 mysqld

But the server is still not working.

Help ?

回答1:

Remove the files ib_logfileN (N being the number) from the MAMP/db/mysql56 folder.

Then restart MAMP.

Should Work!!

Edit: If the above step doesn't work completely, please remove the ibdata<n> file as well, based on the comments.

回答2:

I am working on oS-X (Mac), I was wondering around and came to see this post which help me a lot.
Many readers are being able to solve this problem thanks to the amazing here are the step to fix it out--

This issue generally occur due to explicitly closing of MAMP serves.

1. Quit MAMP.
2. In the finder go to Applications/MAMP/db/mysql/
3. Delete the last log file (look for a file named ib_logfileN – being N the log number Eg-ib_logfile0 and ib_logfile1) we can see in below image.

4. Please back up these before you delete them.
5. Restart MAMP.

It Worked for me, hope will work for you too..

回答3:

I killed the process mysqlid via Activity Monitor on MacOS and restarted MAMP and MySql run successfully.

Update: Even this solution works without restarting MAMP.

回答4:

My MAMPs MySQL stopped working after a power failure, this worked for me:

1. Stop servers from terminal

   • cd /Applications/MAMP/bin
   • ./stop.sh

2. Create my.cnf file in /Applications/MAMP/conf with the following: [mysqld] innodb_force_recovery = 1

3. Start MySQL from same terminal window.

   • ./startMysql.sh

4. Stop MySQL once it has recovered (Check the log in /Applications/MAMP/logs/mysql_error_log.err).

   • ./stopMysql.sh

5. Remove the lines from my.cnf, save and start the servers as usual from the MAMP app.

回答5:

In some cases it may possible that the MySQL is already running on 3306 port. So, you can change the port number with 3307.

P.S: If you are bound to use 3306 in that case I think you can stop existing MySql server and let MAMP to do it for you.

回答6:

MAMP is so touchy. Here's what worked for me:

cd /Applications/MAMP

Move or rename: mv tmp tmp_OLD.

Recreate the folder and a subfolder: mkdir tmp; mkdir tmp/mysql

Now start mysql from MAMP. I think it's possible the socket lock file (tmp/mysql/mysql.sock.lock) gets corrupted and needs to be regenerated.

来源：https://stackoverflow.com/questions/41309275/mysql-server-on-mamp-wont-start