MAMP mysql server won t start No mysql processes are running

Question

My MAMP mysql server won t start  All of the suggestions I ve seen on the web say to check for other mysqld processes running and kill them if they exist  and that it should fix the problem  but it has not for me    Here s the error log   130415 13 42 12 mysqld safe Starting mysqld daemon with databases from  Library Application Support appsolute MAMP PRO db mysql 130415 13 42 12  Warning  Setting lower case table names 2 because file system for  Library Application Support appsolute MAMP PRO db mysql  is case insensitive 130415 13 42 12  Note  Plugin  FEDERATED  is disabled  130415 13 42 12 InnoDB  The InnoDB memory heap is disabled 130415 13 42 12 InnoDB  Mutexes and rw locks use GCC atomic builtins 130415 13 42 12 InnoDB  Compressed tables use zlib 1 2 3 130415 13 42 12 InnoDB  Initializing buffer pool  size   128 0M 130415 13 42 12 InnoDB  Completed initialization of buffer pool 130415 13 42 12 InnoDB  highest supported file format is Barracuda  130415 13 42 13  InnoDB  Waiting for the background threads to start 130415 13 42 14 InnoDB  1 1 8 started  log sequence number 1707549 130415 13 42 14  Note  Event Scheduler  Loaded 0 events 130415 13 42 14  Note   Applications MAMP Library bin mysqld  ready for connections  Version   5 5 25   socket    Applications MAMP tmp mysql mysql sock   port  0  Source distribution   It looks like the connection is open to me  but MAMP stil errors out with this message   MySQL wasn t able to start  Please check log for more information    Any suggestions

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If you are using MAMP PRO 5 7   18029  1 Just stop MAMPRO  2 Goto to directory  Applications MAMP db mysql    Where    is the Number of your Mysql version  3 List the files with command  ls -l   4  Type command  rm ib logfile   Just must delete theses 2 files  5 Restart MAMPRO and its must works fine  Caution  If you remove the files ibdata1 will destroy all you  quot databases quot

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Im posting this as a potensial Answer    What i did to solve this was the following     Restart the computer   to make sure no mysqld processes are running  even if it crashed and tries to restart itself   Delete everything that has anything to do with mysql on the computer by running these commands   sudo rm  usr local mysql sudo rm -rf  usr local mysql  sudo rm -rf  Library StartupItems MySQLCOM sudo rm -rf  Library PreferencePanes MySQL  vim  etc hostconfig and removed the line MYSQLCOM -YES- rm -rf   Library PreferencePanes MySQL  sudo rm -rf  Library Receipts mysql  sudo rm -rf  Library Receipts MySQL  sudo rm -rf  var db receipts com mysql   Delete MAMP by running the MAMP PRO uninstaller  then deleting the applications MAMP folder Delete the Library Application Support appsolute folder  MAMP application support folder  Reinstall MAMP PRO   Hopefully this helps

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Most of the answers here are offering to delete random files  Most of the time  this is the worst thing to do especially if it is important for you to keep the integrity of your development environment  As explained in the log file  if this problem is not related to a read access permission nor to a file you deleted in your mysql then the only solution is to   Open your my conf file from the File menu in MAMP  File  gt  Edit Template  gt  MySQL  Find and edit this line to be  innodb force recovery   1 Save with ctrl S MAMP will offer you to restart your servers Go back building the next unicorn

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I just ran this in terminal  sudo killall -9 mysqld and then I force quit MAMP  Reopen Mamp and everything works perfectly   Sometimes  just turning off and restarting your computer does the trick

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Ok  so I tried EVERY suggestion i found here on SO and other forums I nothing worked for me  The only solution  that worked for me was to install MAMP 3 version  since I use MAMP for wordpress projects version 3 works just fine

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I   ve seen on different answers that we have to remove ib logfile0 and ib logfile1 in Applications MAMP db mysql56   If you use MAMP PRO 4  these files are in  Library Application Support appsolute MAMP PRO db mysql56   Removing theses fils works for me  the serveur doesn   t start after a system crash

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Here s what worked for me    Check to see if you accidentally installed mysql via Brew or something  brew list mysql Uninstall it brew uninstall mysql Try to fire up MAMP  Might need to reinstall  Eventually upgrade to Vagrant and stop fighting with MAMP

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Since none of the answers here solved my particular issue  I should probably add my own solution to to the list  I had to hard reset my computer while MAMP was still running  This sometimes leads to a problem where  after restarting the machine MAMP can start the Apache Server  but can not start the MySQL server for some reason  My solution for this issue was to   Close MAMP Go to Applications MAMP tmp mysql delete the file mysql sock lock Restart MAMP

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What worked for me was removing all files  but not directories  in the mysql dir   Edit  2 As per answers below  you only need to delete the log files   ib logfile0  ib logfile1   So quit MAMP and then in the terminal   rm  Applications MAMP db mysql ib logfile    or wherever your MAMP is installed    Edit   A few people have mentioned that you may want to back up these files first in case anything goes wrong  so maybe just use mv instead   mv  Applications MAMP db mysql     tmp     If this doesn t work go back and kill all processes  sudo killall -9 mysqld  This is also duplicated here  mysql server won  39 t start MAMP

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What worked for me was   I had a process called  mysqld  running even when MAMP had been quit  I force quit the process  restarted MAMP and it worked again

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For me the line innodb additional mem pool size in my cnf was causing it

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This is what worked for me  Windows 10     Click on Start Servers in MAMP Manually click on mysql exe in MAMP installation folder  C  MAMP bin mysql bin mysql exe   Tip   You can pin mysql exe to Start Menu so you don t always have to search for this folder

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Stop MAMP server  Then go in following folder       Applications MAMP db mysql56    In this folder  please remove all direct files except folders  This means that you have to remove only auto cnf  ibdata  ib logfile  not any folders    Restart MAMP server    It should work   Thank you

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rm  Applications MAMP db mysql56     Works fine  but then it shows  No database found  in phpmyadmin although there are databases  so my drupal gave me errors because of this   All I need to do is simply remove two files ib logfile0 and ib logfile1 from  Applications MAMP db mysql56  and that did the trick for me

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Remove the files ib logfileN  N being the number  from the MAMP db mysql56 folder   Then restart MAMP   Should Work

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None of the above answers worked for me  I did MAMP upgrade to latest 5 7 on MacOS   After a while of digging through the error log   Applications MAMP logs mysql error log err  i found out that there s an error  ERROR  unknown variable  thread concurrency 8   that causes termination  Based on a post about upgrades i removed the directive from my cnf and restarted MAMP  All worked well afterwards  was prompted to upgrade DBs  etc

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The easiest solution  quit MAMP and remove the log files from MAMP db mysql directory  ib logfile0  ib logfile1  and restart MAMP   For more visit http   juanfra me 2013 01 mysql-not-starting-mamp-fix

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I ve tried all the solutions above with version 4 2 of MAMP and none of them worked to me in El Capitan OS  so the only thing that worked was uninstalled MAMP with Clean My Mac and then install the older 3 5 2 version  that one worked right away

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I just had this problem  These are the steps that worked for me     Open Preferences in MAMP  make a note of your current Apache and MySQL Port numbers     Click both Set to default Apache and MySQL ports and Reset MAMP buttons then OK  Quit MAMP Delete all files  not folders  from  Applications MAMP db mysql directory  Reboot MAMP and click Start Servers   Note  if MySQL starts fine but Apache doesn t  go back to Preferences and set Apache Port back to what it was before  MAMP should refresh after you click OK and both Apache and MySQL should start  If http   localhost MAMP index php fails to load  open Developer Tools  Chrome   right-click on refresh button and select Empty Cache and Hard Reload  The phpAdmin page should load  If not try going to Application panel in Developer tools  select Clear Storage from the menu and click Clear Site Data    I hope those steps provide a quick fix for someone without needed to destroy your database tables

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Best way to find the real cause is to check the MAMP error log in MAMP   logs   mysql error log err  I found the ERROR  Do you already have another mysql server running on port  3306    - which was actually the cause for my MAMP MYSQL not starting   Port 3306 was already  busy   so I have changed it to 8306 and that solved my issue

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I had to do a combination of things  First I had to change the permissions on my mysql directory  applications MAMP db mysql56 mysql see Stackoverflow here   If that doesn t work add in a my cnf file to applications MAMP conf folder with the following   mysqld  innodb force recovery   1   see Adel  Sean  Helal   answer  This is what ended up working for me

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In case of MAMP PRO you need to remove ib logfiles here   rm -rf  Library Application  Support appsolute MAMP  PRO db mysql56 ib logfile

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I was running MAMP 4 1 on windows and MYSQL 5 7  Was having this problem many times and found out a fix for this  For me deleting the log files was not working then just delete    mysql-bin index YOUR PC NAME pid   and boom it starts working again  If this also doesn t work for your  remember to delete each file one by one and keep checking if any works for you  Make sure to backup always

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Just type below command in terminal   rm  Applications MAMP db mysql56 ib logfile     and then restart the MAMP   It works back perfectly

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I looked at the MAMP site   Go into MAMP db mysql56 and rename both the log files  I just changed the number at the end    Voila  restarted MAMP and all was well   Log File names    ib logfile0 ib logfile1

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MAMP  amp  MAMP PRO 4 0 6 was starting MySql server correctly but stopped doing so after my machine updated the OS to macOS Sierra  10 12 2   I tried a few options mentioned here including setting folder permissions and re-install etc  Nothing seemed fixed the issue for me so I shifted to XAMPP and it is serving OK so far   Update  I ve got MAMP working with this simple solution here

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You need to leave the mysql database AS IS     Uninstall and reinstall MAMP Pro  For every WP instance that you want to have on your server  localhost   you need to create a NEW database that is not mysql  Go into SequelPro and add database  Use Duplicator to transfer your WP    Do not use mysql for anything  it appears to be required by MAMP

[mysql] MAMP mysql server won't start. No mysql processes are running

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