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mysqld не работает в ubuntu 12.04


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Обновился с 10.10 последовательно на 11.04, 11.10, потом на 12.04. Перестал отвечать mysqld .

mysql -h127.0.0.1 -uroot
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 0

При этом без хоста работает

 mysql -uroot
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 16
Server version: 5.5.24-0ubuntu0.12.04.1-log (Ubuntu)

Copyright (c) 2000, 2011, 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> 

mysqld запущен на 3306

 netstat -ntpl | grep mysql
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      6856/mysqld  

Во время неудачной попытки идет обмен

[stark => ~]$ sudo tcpdump -i lo -n  port 3306 
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on lo, link-type EN10MB (Ethernet), capture size 65535 bytes
11:14:49.844506 IP 127.0.0.1.51486 > 127.0.0.1.3306: Flags [S], seq 2744153817, win 32792, options [mss 16396,sackOK,TS val 16970367 ecr 0,nop,wscale 4], length 0
11:14:49.844526 IP 127.0.0.1.3306 > 127.0.0.1.51486: Flags [S.], seq 1395965413, ack 2744153818, win 32768, options [mss 16396,sackOK,TS val 16970367 ecr 16970367,nop,wscale 4], length 0
11:14:49.844540 IP 127.0.0.1.51486 > 127.0.0.1.3306: Flags [.], ack 1, win 2050, options [nop,nop,TS val 16970367 ecr 16970367], length 0
11:14:49.844673 IP 127.0.0.1.3306 > 127.0.0.1.51486: Flags [F.], seq 1, ack 1, win 2048, options [nop,nop,TS val 16970367 ecr 16970367], length 0
11:14:49.844734 IP 127.0.0.1.51486 > 127.0.0.1.3306: Flags [F.], seq 1, ack 2, win 2050, options [nop,nop,TS val 16970367 ecr 16970367], length 0
11:14:49.844753 IP 127.0.0.1.3306 > 127.0.0.1.51486: Flags [.], ack 2, win 2048, options [nop,nop,TS val 16970367 ecr 16970367], length 0

Не знаю что делать . iptables почистил , в /etc/hosts.allow прописал

mysqld: all

Не помогает

Ответ на: комментарий от uspen

при обновлении dpkg спрашивал, заменить ли конфиг? или у тебя дефолтный?

Спрашивал и перетер . Старый остался в my.cnf.dpkg-old(Хотя я не уверен что это именно он, так как я обновлялся последовательно через несколько версий). Пробовал его вернуть, тоже не работает, diff принципиальной разницы не показывает. Взял рабочий конфиг у коллеги с соседней машины (тоже Ubuntu 12.04) - у меня тоже не работает ( у него работает).

Могу выложить дефолтный конфиг, но там вроде не заметил ничего критичного.

# 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

.

Есть bind-address на нем поднимается , начинает отвечать , потом сбрасывает соединение .

ubunter
() автор топика
Ответ на: комментарий от Pinkbyte

my.cnf в студию

#
# 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.
[client]
port= 3306
socket= /var/run/mysqld/mysqld.sock

# Here is entries for some specific programs
# The following values assume you have at least 32M ram

# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[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
#bind-address= 0.0.0.0
#
# * Fine Tuning
#
key_buffer= 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         = BACKUP
#max_connections        = 100
#table_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 logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# Here you can see queries with especially long duration
#log_slow_queries= /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



[mysqldump]
quick
quote-names
max_allowed_packet= 100M

[mysql]
#no-auto-rehash# faster start of mysql but no tab completition

[isamchk]
key_buffer= 16M

#
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/

.

ubunter
() автор топика

Решено. mysql не хватало дискриптеров для открытия файлов . Об этом ругалось в /var/log/syslog.

Увеличил параметр

open-files-limit=2048
. и все заработало

ubunter
() автор топика
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