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    Statement regarding the closure of the Kopano community forum and the end of the community edition

    Problems after upgrade KC 8.7.9 to 8.7.12

    Kopano Groupware Core
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    • fbartels
      fbartels Kopano last edited by

      Hi @xthbx, @Sinux.

      8.7.13 is now available in the pre-final download directory. Your feedback would be appreciated.

      See https://forum.kopano.io/topic/3215/kopano-core-8-7-13-pre-final for more information.

      Regards Felix

      Resources:
      https://kopano.com/blog/how-to-get-kopano/
      https://documentation.kopano.io/
      https://kb.kopano.io/

      Support overview:
      https://kopano.com/support/

      xthbx 2 Replies Last reply Reply Quote 0
      • xthbx
        xthbx @fbartels last edited by xthbx

        @fbartels thanks

        i gave it a try and keep you updated

        Update after 1 day since upgrade 8.7.13: still no problems. Looks great

        1 Reply Last reply Reply Quote 0
        • xthbx
          xthbx @fbartels last edited by xthbx

          @fbartels i’m sorry but the Problem is still there. It just happened again.

          ==> /var/log/kopano/server.log <==
          Wed May 27 16:00:33 2020: [error  ] mysql_real_connect: Can't create a new thread (errno 11); if you are not out of available memory, you can consult the manual for a possible OS-dependent bug
          Wed May 27 16:00:33 2020: [error  ] Unable to get database connection: MYSQL not initialized
          Wed May 27 16:00:33 2020: [error  ] ECSearchFolders::Search() GetStore failed: disk error (80000007)
          Wed May 27 16:00:40 2020: [error  ] mysql_real_connect: Can't create a new thread (errno 11); if you are not out of available memory, you can consult the manual for a possible OS-dependent bug
          Wed May 27 16:00:40 2020: [error  ] Unable to get database connection: MYSQL not initialized
          Wed May 27 16:00:40 2020: [error  ] ECSearchFolders::Search() GetStore failed: disk error (80000007)
          Wed May 27 16:00:45 2020: [error  ] mysql_real_connect: Can't create a new thread (errno 11); if you are not out of available memory, you can consult the manual for a possible OS-dependent bug
          Wed May 27 16:00:45 2020: [error  ] Unable to get database connection: MYSQL not initialized
          Wed May 27 16:00:45 2020: [error  ] ECSearchFolders::Search() GetStore failed: disk error (80000007)
          Wed May 27 16:01:00 2020: [error  ] mysql_real_connect: Can't create a new thread (errno 11); if you are not out of available memory, you can consult the manual for a possible OS-dependent bug
          
          1 Reply Last reply Reply Quote 0
          • jengelh
            jengelh Banned last edited by

            ER_CANT_CREATE_THREAD  
            ...
                    eng "Can't create a new thread (errno %M); if you are not out of available memory, you can consult the manual for a pos>
            

            –>

            ## sql/mysqld.cc:void create_thread_to_handle_connection(CONNECT *connect)
            
              /* Create new thread to handle connection */
              inc_thread_created();
              DBUG_PRINT("info",(("creating thread %lu"), (ulong) connect->thread_id));
              connect->prior_thr_create_utime= microsecond_interval_timer();
            
              if ((error= mysql_thread_create(key_thread_one_connection,
                                              &connect->real_id, &connection_attrib,
                                              handle_one_connection, (void*) connect)))
              {
                /* purecov: begin inspected */
                DBUG_PRINT("error", ("Can't create thread to handle request (error %d)",
                            error));
                my_snprintf(error_message_buff, sizeof(error_message_buff),
                            ER_DEFAULT(ER_CANT_CREATE_THREAD), error);
                connect->close_with_error(ER_CANT_CREATE_THREAD, error_message_buff,
                                          ER_OUT_OF_RESOURCES);
                DBUG_VOID_RETURN;
                /* purecov: end */
              }
            

            –>

            #ifdef HAVE_PSI_THREAD_INTERFACE
              #define mysql_thread_create(K, P1, P2, P3, P4) \
                inline_mysql_thread_create(K, P1, P2, P3, P4)
            #else
              #define mysql_thread_create(K, P1, P2, P3, P4) \
                pthread_create(P1, P2, P3, P4)
            #endif
            

            So no check for connection limit exceeded (at this point), this is directly the result of pthread_create. If pthread_create fails, then you are running into some ulimit of your mysqld/system. Without further analysis of the Linux installation, I at this time conclude the fault is with your mysqld process, or the ulimits and cgroups that it has been configured with.

            1 Reply Last reply Reply Quote 0
            • jengelh
              jengelh Banned last edited by

              /usr/include/asm-generic/errno-base.h:#define   EAGAIN          11      /* Try again */
              
              man pthread_create:
              
                     EAGAIN Insufficient resources to create another thread.
              
                     EAGAIN A system-imposed limit on the number of threads was encountered.  There are a number of limits that may  trig-
                            ger  this  error: the RLIMIT_NPROC soft resource limit (set via setrlimit(2)), which limits the number of pro-
                            cesses and threads for a real user ID, was reached; the kernel's system-wide limit on the number of  processes
                            and  threads,  /proc/sys/kernel/threads-max,  was  reached  (see  proc(5));  or  the  maximum  number of PIDs,
                            /proc/sys/kernel/pid_max, was reached (see proc(5)).
              
              1 Reply Last reply Reply Quote 0
              • xthbx
                xthbx last edited by

                hmm strange the server worked fine for months with KC 8.7.9. I guess i have to keep looking. And i’m not a Linux pro so i dont really know where to look next.

                1 Reply Last reply Reply Quote 0
                • xthbx
                  xthbx last edited by xthbx

                  mysql> show processlist;
                  +----+--------+-----------+--------+---------+-------+----------+------------------+
                  | Id | User   | Host      | db     | Command | Time  | State    | Info             |
                  +----+--------+-----------+--------+---------+-------+----------+------------------+
                  |  6 | kopano | localhost | kopano | Sleep   |    89 |          | NULL             |
                  |  7 | kopano | localhost | kopano | Sleep   |    15 |          | NULL             |
                  |  8 | kopano | localhost | kopano | Sleep   |     5 |          | NULL             |
                  |  9 | kopano | localhost | kopano | Sleep   |    10 |          | NULL             |
                  | 10 | kopano | localhost | kopano | Sleep   |    10 |          | NULL             |
                  | 11 | kopano | localhost | kopano | Sleep   |    35 |          | NULL             |
                  | 12 | kopano | localhost | kopano | Sleep   |     5 |          | NULL             |
                  | 13 | kopano | localhost | kopano | Sleep   |    15 |          | NULL             |
                  | 16 | kopano | localhost | kopano | Sleep   |  1761 |          | NULL             |
                  | 55 | kopano | localhost | kopano | Sleep   | 28726 |          | NULL             |
                  | 56 | kopano | localhost | kopano | Sleep   | 28666 |          | NULL             |
                  | 57 | kopano | localhost | kopano | Sleep   | 25905 |          | NULL             |
                  | 58 | kopano | localhost | kopano | Sleep   | 25124 |          | NULL             |
                  | 59 | kopano | localhost | kopano | Sleep   | 25064 |          | NULL             |
                  | 62 | kopano | localhost | kopano | Sleep   |    25 |          | NULL             |
                  | 63 | kopano | localhost | kopano | Sleep   | 22307 |          | NULL             |
                  | 64 | kopano | localhost | kopano | Sleep   | 21527 |          | NULL             |
                  | 65 | kopano | localhost | kopano | Sleep   | 21467 |          | NULL             |
                  | 66 | kopano | localhost | kopano | Sleep   | 18704 |          | NULL             |
                  | 67 | kopano | localhost | kopano | Sleep   | 17923 |          | NULL             |
                  | 68 | kopano | localhost | kopano | Sleep   | 17863 |          | NULL             |
                  | 76 | kopano | localhost | kopano | Sleep   | 15106 |          | NULL             |
                  | 77 | kopano | localhost | kopano | Sleep   | 14326 |          | NULL             |
                  | 78 | kopano | localhost | kopano | Sleep   | 14266 |          | NULL             |
                  | 81 | kopano | localhost | kopano | Sleep   |  4307 |          | NULL             |
                  | 82 | kopano | localhost | kopano | Sleep   |  3527 |          | NULL             |
                  | 83 | kopano | localhost | kopano | Sleep   |  3467 |          | NULL             |
                  | 98 | kopano | localhost | kopano | Sleep   |   704 |          | NULL             |
                  | 99 | root   | localhost | NULL   | Query   |     0 | starting | show processlist |
                  +----+--------+-----------+--------+---------+-------+----------+------------------+
                  29 rows in set (0.00 sec)
                  

                  is it a normal behavior that with every new search in webapp a new process is generated and not reset ?

                  here is my mysqld.cnf:

                  #
                  # The MySQL database server configuration file.
                  #
                  # You can copy this to one of:
                  # - "/etc/mysql/my.cnf" to set global options,
                  # - "~/.my.cnf" to set user-specific options.
                  #
                  # One can use all long options that the program supports.
                  # Run program with --help to get a list of available options and with
                  # --print-defaults to see which it would actually understand and use.
                  #
                  # For explanations see
                  # http://dev.mysql.com/doc/mysql/en/server-system-variables.html
                  
                  # This will be passed to all mysql clients
                  # It has been reported that passwords should be enclosed with ticks/quotes
                  # escpecially if they contain "#" chars...
                  # Remember to edit /etc/mysql/debian.cnf when changing the socket location.
                  
                  # Here is entries for some specific programs
                  # The following values assume you have at least 32M ram
                  
                  [mysqld_safe]
                  socket          = /var/run/mysqld/mysqld.sock
                  nice            = 0
                  
                  [mysqld]
                  #
                  # * Basic Settings
                  #
                  user            = mysql
                  pid-file        = /var/run/mysqld/mysqld.pid
                  socket          = /var/run/mysqld/mysqld.sock
                  port            = 3306
                  basedir         = /usr
                  datadir         = /var/lib/mysql
                  tmpdir          = /tmp
                  lc-messages-dir = /usr/share/mysql
                  skip-external-locking
                  #
                  # Instead of skip-networking the default is now to listen only on
                  # localhost which is more compatible and is not less secure.
                  bind-address            = 127.0.0.1
                  #
                  # * Fine Tuning
                  #
                  ##KopanoDB
                  innodb_buffer_pool_size = 768M
                  innodb_log_file_size = 192M
                  innodb_log_buffer_size = 48M
                  max_connections = 500
                  innodb_file_per_table
                  ##KopanoDB
                  key_buffer_size         = 16M
                  max_allowed_packet      = 16M
                  thread_stack            = 192K
                  thread_cache_size       = 8
                  # This replaces the startup script and checks MyISAM tables if needed
                  # the first time they are touched
                  myisam-recover-options  = BACKUP
                  #max_connections        = 100
                  #table_open_cache       = 64
                  #thread_concurrency     = 10
                  #
                  # * Query Cache Configuration
                  #
                  query_cache_limit       = 1M
                  query_cache_size        = 16M
                  #
                  # * Logging and Replication
                  #
                  # Both location gets rotated by the cronjob.
                  # Be aware that this log type is a performance killer.
                  # As of 5.1 you can enable the log at runtime!
                  #general_log_file        = /var/log/mysql/mysql.log
                  #general_log             = 1
                  #
                  # Error log - should be very few entries.
                  #
                  log_error = /var/log/mysql/error.log
                  #
                  # Here you can see queries with especially long duration
                  #slow_query_log         = 1
                  #slow_query_log_file    = /var/log/mysql/mysql-slow.log
                  #slow_query_log         = 1
                  #slow_query_log_file    = /var/log/mysql/mysql-slow.log
                  #long_query_time = 2
                  #log-queries-not-using-indexes
                  #
                  # The following can be used as easy to replay backup logs or for replication.
                  # note: if you are setting up a replication slave, see README.Debian about
                  #       other settings you may need to change.
                  #server-id              = 1
                  #log_bin                        = /var/log/mysql/mysql-bin.log
                  expire_logs_days        = 10
                  max_binlog_size   = 100M
                  #binlog_do_db           = include_database_name
                  #binlog_ignore_db       = include_database_name
                  #
                  # * InnoDB
                  #
                  # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
                  # Read the manual for more InnoDB related options. There are many!
                  #
                  # * Security Features
                  #
                  # Read the manual, too, if you want chroot!
                  # chroot = /var/lib/mysql/
                  #
                  # For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
                  #
                  # ssl-ca=/etc/mysql/cacert.pem
                  # ssl-cert=/etc/mysql/server-cert.pem
                  # ssl-key=/etc/mysql/server-key.pem
                  
                  root@xxx:/home/xxx# free -m
                                total        used        free      shared  buff/cache   available
                  Mem:           4096        2167        1576          10         352        1917
                  Swap:             0           0           0
                  
                  1 Reply Last reply Reply Quote 0
                  • xthbx
                    xthbx last edited by xthbx

                    @fbartels i just installed 8.7.14 (pre-final) and keep you updated…

                    1 Reply Last reply Reply Quote 1
                    • xthbx
                      xthbx last edited by

                      so far it looks better:

                      mysql> show processlist;
                      +-----+--------+-----------+--------+---------+------+----------+------------------+
                      | Id  | User   | Host      | db     | Command | Time | State    | Info             |
                      +-----+--------+-----------+--------+---------+------+----------+------------------+
                      |   6 | kopano | localhost | kopano | Sleep   |  111 |          | NULL             |
                      |   7 | kopano | localhost | kopano | Sleep   |    9 |          | NULL             |
                      |   8 | kopano | localhost | kopano | Sleep   |   29 |          | NULL             |
                      |   9 | kopano | localhost | kopano | Sleep   |   19 |          | NULL             |
                      |  10 | kopano | localhost | kopano | Sleep   |   34 |          | NULL             |
                      |  11 | kopano | localhost | kopano | Sleep   |    4 |          | NULL             |
                      |  12 | kopano | localhost | kopano | Sleep   |   29 |          | NULL             |
                      |  13 | kopano | localhost | kopano | Sleep   |    9 |          | NULL             |
                      |  14 | kopano | localhost | kopano | Sleep   |    4 |          | NULL             |
                      |  16 | kopano | localhost | kopano | Sleep   |  218 |          | NULL             |
                      | 110 | root   | localhost | NULL   | Query   |    0 | starting | show processlist |
                      +-----+--------+-----------+--------+---------+------+----------+------------------+
                      11 rows in set (0.00 sec)
                      
                      xthbx 1 Reply Last reply Reply Quote 0
                      • xthbx
                        xthbx @xthbx last edited by

                        @fbartels it looks great. No problem since installation. Still only 11 connections.

                        fbartels 1 Reply Last reply Reply Quote 1
                        • fbartels
                          fbartels Kopano @xthbx last edited by

                          @xthbx thanks for you feedback

                          Regards Felix

                          Resources:
                          https://kopano.com/blog/how-to-get-kopano/
                          https://documentation.kopano.io/
                          https://kb.kopano.io/

                          Support overview:
                          https://kopano.com/support/

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