ERROR 2013 HY000 Lost connection to MySQL server at reading authorization packet system error 0

Question

I am getting the following error   ERROR 2013  HY000   Lost connection to MySQL server at   reading authorization packet   system error  0   when trying to connect to my MySQL server   What I am doing    I have Master - Slave replication in MySQL that is working and just added load balance capabilities using F5   I have configured the F5 according to their site     But when I am trying to connect to my MySQL server using the IP that the F5 was configured with I get   ERROR 2013  HY000   Lost connection to MySQL server at   reading authorization packet   system error  0    Any ideas     Update on my progress   ZERO - i am getting the same error  I get no entries in the  var log secure as if somebody would try to authenticate coming form the ip where i had created my load balance server  No enties in the mysql error log  The command - returns nothing  mysql gt  SHOW GLOBAL STATUS LIKE  Aborted connections   Empty set  0 00 sec    I ve already altered my my cnf file and add the    mysqld  skip-name-resolve   Alterd the connect timeout to 10   So it seems i get no response for the server i have created on my F5  I finally convinced the F5 admin to pass me the log for the F5 server and i have exctraced all i need form it  Here is the output      Jan 28 15 46 39 tmm debug tmm 6459   Rule  Common iRule-f5 mysql proxy  lt CLIENT ACCEPTED gt   BIG-IP MySQL Proxy -- clientside initial connection Jan 28 15 46 39 tmm debug tmm 6459   Rule  Common iRule-f5 mysql proxy  lt CLIENT ACCEPTED gt   BIG-IP MySQL Proxy -- clientside responding with server WELCOME packet Jan 28 15 46 39 tmm debug tmm 6459   Rule  Common iRule-f5 mysql proxy  lt CLIENT DATA gt   BIG-IP MySQL Proxy -- clientside authenticated flag not set Jan 28 15 46 39 tmm err tmm 6459   Rule  Common iRule-f5 mysql proxy  lt CLIENT DATA gt   BIG-IP MySQL Proxy -- mysql client  attempting to do something before authentication Jan 28 15 46 39 tmm debug tmm 6459   Rule  Common iRule-f5 mysql proxy  lt LB SELECTED gt   BIG-IP MySQL Proxy -- serverside selected pool  Common foss-mysql-slave pool node SLAVE-IP Jan 28 15 46 39 tmm debug tmm 6459   Rule  Common iRule-f5 mysql proxy  lt CLIENT CLOSED gt   BIG-IP MySQL Proxy -- clientside connection closed from MASTER-IP XXXXXXX  Jan 28 15 46 39 tmm debug tmm 6459   Rule  Common iRule-f5 mysql proxy  lt SERVER CLOSED gt   BIG-IP MySQL Proxy -- serverside connection closed from node SLAVE-IP XXXXXXXX    I ve replaced the ip for security sake     just as an extra - and i think is here the problem - my mysql version is 5 1 69-log Thx All

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My case was that the server didn t accept the connection from this IP  The server is a SQL server from Google Apps Engine  and you have to configure allowed remote hosts that can connect to the server   Adding the  new  host to the GAE admin page solved the issue

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I got both errors  mostly reading initial communication packet and reading authorization packet one time  It seems random  but sometimes I was able to establish a connection after reboots  but after some time the error creeped back   Avoiding the 5GHz WiFi in the client seems to have fixed the issue  That s what worked for me  server was always connected to 2 4GHz    I tried everything from server versions  odbc connector versions  firewall settings  installing some windows update  and then uninstalling them   some of the answers posted here  etc    lost my entire sleep time for today  Super tired day awaits me

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I solved this by stopping mysql several times     mysql server stop Shutting down MySQL    ERROR  The server quit without updating PID file   usr local var mysql xxx local pid     mysql server stop Shutting down MySQL    SUCCESS     mysql server stop ERROR  MySQL server PID file could not be found   note  this is good    mysql server start   All good from here  I suspect mysql had been started more than once

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I ve struggled a lot with this error  Tried every single answer I found on the internet   In the end  I ve connected my computer to my cell phone s hotspot and everything worked  I turned out that my company s internet was blocking the connection with MySQL   This is not a complete solution  but maybe someone faces the same problem  It worths to check the connection

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This is usually caused by an aborted connect  You can verify this by checking the status   mysql gt  SHOW GLOBAL STATUS LIKE  Aborted connects     If this counter keeps increasing as you get the lost connections  that s a sign you re having a problem during connect   One remedy that seems to work in many cases is to increase the timeout   A suggested value is 10 seconds   mysql gt  SET GLOBAL connect timeout   10    Another common cause of connect timeouts is the reverse-DNS lookup that is necessary when authenticating clients   It is recommended to run MySQL with the config variable in my cnf    mysqld  skip-name-resolve   This means that your GRANT statements need to be based on IP address rather than hostname     I also found this report from 2012 at the f5 com site  now protected by login  but I got it through Google cache      It is likely the proxy will not work unless you are running BIG-IP 11 1 and MySQL 5 1  which were the versions I tested against  The MySQL protocol has a habit of changing    I suggest you contact F5 Support and confirm that you are using a supported combination of versions

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I use several mysql connections  connecting to different sets of databases  in localhost   This happened to me after I shut my computer down and mysql was not properly shutdown  After starting my machine I was able to successfully connect to multiple db connections except one  I used this a lot before my machine shutdown   As per the instructions in this posts I doubled connect timeout but I was not able to connect to that one database connection   I restarted my machine and i can successfully connect now  This will help you unblock yourself but it d be great if it can be fixed without restarting the machine    Another concern is  connection timeout seemed to me delay related problem but I was getting the error immediately in localhost when there is no network in the equation

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From documentation      More rarely  it can happen when the client is attempting the initial   connection to the server  In this case  if your connect timeout value   is set to only a few seconds  you may be able to resolve the problem   by increasing it to ten seconds  perhaps more if you have a very long   distance or slow connection  You can determine whether you are   experiencing this more uncommon cause by using SHOW STATUS LIKE    aborted connections   It will increase by one for each initial   connection attempt that the server aborts  You may see    reading   authorization packet    as part of the error message  if so  that also   suggests that this is the solution that you need    Try increasing connect timeout in your my cnf file  Another style   MySQL  Lost connection to MySQL server at  reading initial communication packet    At some point  it was impossible for remote clients to connect to the MySQL server  The client  some application on a Windows platform  gave a vague description like Connection unexpectedly terminated  When remotely logging in with the MySQL client the following error appeared   ERROR 2013  HY000   Lost connection to MySQL server at  reading initial communication packet   system error  0   On FreeBSD this happens because there was no match found in  etc hosts allow  Adding the following line before the line saying ALL ALL fixes this   mysqld  ALL  allow   On non-FreeBSD Unix systems  it is worth to check the files  etc hosts allow and  etc hosts deny  If you are restricting connections  make sure this line is in  etc hosts allow   mysqld  ALL   or check if the host is listed in  etc hosts deny   In Arch Linux  a similar line can be added to  etc hosts allow   mysqld  ALL

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Another possibility can be connection reset from the TCP wrappers   etc hosts deny and  etc hosts allow   Just check what is coming in from the telnet to port 3306 - if it is nothing  then there is something is in the middle preventing communication from happening

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I have a mac but would assume all linux are the same for this part     In my case I got this   2018-12-03 11 13 27 - Start server   2018-12-03 11 13 27 - Server start done  2018-12-03 11 13 27 - Checking server status    2018-12-03 11 13 27 - Trying to connect to MySQL    2018-12-03 11 13 27 - Lost connection to MySQL server at  reading authorization packet   system error  0  2013  2018-12-03 11 13 27 - Assuming server is not running   I ran this   sudo killall mysqld   And then started the mysql again through mysqlworkbench although in your case it might be like this   mysql server start    sidenote  I tried running mysql server stop and got this Shutting down MySQL      SUCCESS  but after running ps aux   grep mysql I saw that it hasn t really shut down

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If you get this when using DevDesktop - just restart DevDesktop

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In my case  it happened when there were a lot of connection to the MySQL server  15 000 connections  and the free memory was about 120M   After I added more memory to the server  the error was gone

[mysql] ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0

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