Re: MySQL server has gone away
>well, who did set it that low? ِDon't know. Maybe the previous admin hadn't used mysql for sending emails!! Anyway, thanks. Regards, Mahmood On Monday, April 3, 2017 11:37 PM, Reindl Harald <h.rei...@thelounge.net> wrote: Am 03.04.2017 um 20:41 schrieb Mahmood N: > Good news! > > I changed wait_timeout=30 to wait_timeout=600 and now the error > disappears... I don't know if long_query_time=1 has effect. well, who did set it that low? https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_wait_timeout http://orbisius.com/howto/web-development/change-mysqls-wait_timeout-interactive_timeout-variables/ > On Monday, April 3, 2017 10:32 PM, Mahmood N <nt_mahm...@yahoo.com> wrote: > I tested with both 5 and 1 and see the log files are empty. > > I am really confused about that error and it is taking more than 2 weeks > about that! -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql
Re: MySQL server has gone away
Good news! I changed wait_timeout=30 to wait_timeout=600 and now the error disappears... I don't know if long_query_time=1 has effect. Regards, Mahmood On Monday, April 3, 2017 10:32 PM, Mahmood N <nt_mahm...@yahoo.com> wrote: Dear reindl, I tested with both 5 and 1 and see the log files are empty. I am really confused about that error and it is taking more than 2 weeks about that! Regards, Mahmood
Re: MySQL server has gone away
Dear reindl, I tested with both 5 and 1 and see the log files are empty. I am really confused about that error and it is taking more than 2 weeks about that! Regards, Mahmood
Re: MySQL server has gone away
So I set long_query_time=5 and restarted the service. Test the email page again. Still the logs are empty. Regards, Mahmood
Re: MySQL server has gone away
>since when is phpinfo() - the *real* active configuration be it changed >by some config snippet, vhost-configuration or even ini_set() - the same >than a random file in /etc? Sorry I totally didn't understand that sentence... Regards, Mahmood
Re: MySQL server has gone away
>given that a reasonable server should be able to >handle hunredts to thousands of requests per second anything above 1 >second is a alert sign Excuse me, do you mean higher values are better? I didn't understand. I said in my posts that when I submit the email test, the refresh time for that page is about 5 minutes. >look also in phpinfo() for mysqlnd and mysql params containing "timeout" >and/or "max" in /etc/php/7.0/apache2/php.ini I see ;mysqlnd.net_read_timeout = 31536000 Note that is comment. Regards, Mahmood
Re: MySQL server has gone away
The my.conf file contains log_error=/var/log/mysql/error.log slow_query_log=1 slow_query_log_file=/var/log/mysql/error_slow.log max_connections=200 max_user_connections=30 wait_timeout=30 interactive_timeout=50 long_query_time=5 character-set-client-handshake = FALSE thread_concurrency = 8 query_cache_size = 16M thread_cache_size = 8 max_allowed_packet = 8M I restarted the mysql server (/etc/init.d/mysql restart on ubuntu) and tested the email page one again. I again see that error message on the browser, however, the log files are empty. Regards, Mahmood
Re: MySQL server has gone away
Dear all, Currently max_allowed_packet is set to 8M. That test email is simply a test email containing some basic information in the message body to assure that the email system works. Thing that can help me is to put mysql in the debug mode in one terminal and at the same time, submit a test email from the browser. Then I can see what is going there in sql. This process is similar to sshd debug mode where I can turn on the ssh service in the debug mode and see what is what. Is there is any other option for debugging, please let me know. >The MySQL Error Log may contain details explaining why mysqld was unable to >stay running If you are referring to /var/log/musql/error.log then I have to say it is empty! >Perhaps you could connect your mysql client, load the screen, then run show >full processlist every second or so to see what queries are going on. As I said, I know few things about mysql. Please let me know the steps to do that Regards, Mahmood Show original message
Re: MySQL server has gone away
When I click on the submit button in Moodle and it is waiting for refresh, I execute the mysql command but the output is not meaningful mahmood@ce:/var/www/html/courses$ mysql -u moodle -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 30912 Server version: 5.5.54-0ubuntu0.14.04.1 (Ubuntu) Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show full processlist -> -> Meanwhile using Webmin, I execute the same command for that user and see Output from SQL command show full processlist .. | Id | User | Host | db | Command | Time | State | Info | | 30912 | moodle | localhost | | Sleep | 42 | I am not expert with MySQL, however as the Moodle admin I am trying to fix the problems. Regards, Mahmood
Re: MySQL server has gone away
Thanks for the quick reply. So, how can I get further information? Thing is that, after 5 minutes, when I refresh the page every thing is normal. Regards, Mahmood On Monday, April 3, 2017 3:39 PM, Ken D'Ambrosio <k...@jots.org> wrote: Basically, it says that MySQL is not responding to queries. So it likely has died, or perhaps is mis-configured. On April 3, 2017 7:07:25 AM EDT, Mahmood N <nt_mahm...@yahoo.com> wrote: Hi,I am using Moodle which itself uses SQL for the database. Problem is that, when I run the email plugin and execute the command, the refresh time of the page becomes high (in the order of 3-5 minutes) and at the end, I see this message Debug info: MySQL server has gone away SELECT id, sid, state, userid, lastip, timecreated, timemodified FROM mdl_sessions WHERE sid = ? [array ( 0 => 'jqfbgd5b0q6e2l81bb5gb87mn3', )] Error code: dmlreadexceptionStack trace: - line 479 of /lib/dml/moodle_database.php: dml_read_exception thrown - line 1175 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end() - line 1551 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->get_records_sql() - line 1523 of /lib/dml/moodle_database.php: call to moodle_database->get_record_sql() - line 1502 of /lib/dml/moodle_database.php: call to moodle_database->get_record_select() - line 286 of /lib/classes/session/manager.php: call to moodle_database->get_record() - line 82 of /lib/classes/session/manager.php: call to core\session\manager::initialise_user_session() - line 785 of /lib/setup.php: call to core\session\manager::start() - line 27 of /config.php: call to require_once() - line 30 of /index.php: call to require_once() Although it looks like a bug in Moodle, but the guys said it is a MySQL issue. I am confused about that. If you have any idea please let me know. What does this error say exactly? Regards, Mahmood -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
MySQL server has gone away
Hi,I am using Moodle which itself uses SQL for the database. Problem is that, when I run the email plugin and execute the command, the refresh time of the page becomes high (in the order of 3-5 minutes) and at the end, I see this message Debug info: MySQL server has gone away SELECT id, sid, state, userid, lastip, timecreated, timemodified FROM mdl_sessions WHERE sid = ? [array ( 0 => 'jqfbgd5b0q6e2l81bb5gb87mn3', )] Error code: dmlreadexceptionStack trace: - line 479 of /lib/dml/moodle_database.php: dml_read_exception thrown - line 1175 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end() - line 1551 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->get_records_sql() - line 1523 of /lib/dml/moodle_database.php: call to moodle_database->get_record_sql() - line 1502 of /lib/dml/moodle_database.php: call to moodle_database->get_record_select() - line 286 of /lib/classes/session/manager.php: call to moodle_database->get_record() - line 82 of /lib/classes/session/manager.php: call to core\session\manager::initialise_user_session() - line 785 of /lib/setup.php: call to core\session\manager::start() - line 27 of /config.php: call to require_once() - line 30 of /index.php: call to require_once() Although it looks like a bug in Moodle, but the guys said it is a MySQL issue. I am confused about that. If you have any idea please let me know. What does this error say exactly? Regards, Mahmood
