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各位大侠,大仙,救命啊!我的mysql数据库,隔1天死一次。 [复制链接]

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发表于 2009-03-19 09:42 |只看该作者 |倒序浏览
10可用积分
病状:
1、数据大概每隔一天,时间不是很有规律,就会倒掉。
我在lvs 中ipvsadm,看到web 都没有连接
在mysql中,show processlist 看到很多进程被locked掉。都是查询进程,一个样(下面简称A).
后来我把A这个查询进程做成静态的,数据库又变成其他进程locked,也是查询进程,一个样的。

2、我测试过很多方法,比如更换apache为nginx,不行;独立数据库服务器上面的图片服务到单独的图片服务起,也不行。

在web前面在加个SQUID也不行;,更改数据库的my.cnf,也没有效果。

3、下面是我的my.cnf
# Example MySQL config file for large systems.
#
# This is for a large system with memory = 512M where the system runs mainly
# MySQL.
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /usr/local/webserver/mysql/var) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
#password       = your_password
port            = 3306
socket          = /var/lib/mysql/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port            = 3306
socket          = /var/lib/mysql/mysql.sock
#skip-innodb
skip-name-resolve
skip-locking
join_buffer_size = 64M
max_connections = 2048
old_passwords=1
key_buffer = 1024M
back_log = 200
max_allowed_packet = 8M
table_cache = 2048
sort_buffer_size = 64M
read_buffer_size = 32M
read_rnd_buffer_size = 16M
myisam_sort_buffer_size = 512M
thread_cache = 32
wait_timeout=10
max_connect_errors = 30000
tmp_table_size = 2048M
max_heap_table_size = 1024M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 16
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking
# Disable Federated by default
#skip-federated
# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin
# binary logging format - mixed recommended
binlog_format=mixed
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id       = 1
# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
#    the syntax is:
#
#    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
#    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
#    where you replace <host>, <user>, <password> by quoted strings and
#    <port> by the master's port number (3306 by default).
#
#    Example:
#
#    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
#    MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
#    start replication for the first time (even unsuccessfully, for example
#    if you mistyped the password in master-password and the slave fails to
#    connect), the slave will create a master.info file, and any later
#    change in this file to the variables' values below will be ignored and
#    overridden by the content of the master.info file, unless you shutdown
#    the slave server, delete master.info and restart the slaver server.
#    For that reason, you may want to leave the lines below untouched
#    (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id       = 2
#
# The replication master for this slave - required
#master-host     =   <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user     =   <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password =   <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port     =  <port>
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin
# Point the following paths to different dedicated disks
#tmpdir         = /tmp/
#log-update     = /path-to-dedicated-directory/hostname
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /usr/local/webserver/mysql/var/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /usr/local/webserver/mysql/var/
#innodb_log_arch_dir = /usr/local/webserver/mysql/var/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 256M
#innodb_additional_mem_pool_size = 20M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 64M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer = 128M
sort_buffer_size = 128M
read_buffer = 2M
write_buffer = 2M
[myisamchk]
key_buffer = 128M
sort_buffer_size = 128M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout


这个问题出现很久了,Google过,baidu过,都找不出原因。

晚上12点被叫起来,网站倒掉了,每天接电话都提心掉胆的,真不是人活的样。

最后实在没有招了,来这里找人了。

论坛徽章:
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白银圣斗士
日期:2015-11-23 08:33:04
2 [报告]
发表于 2009-03-19 09:46 |只看该作者
挂 掉是什么意思?
是因为负载太高连接不上还是说进程退出了?

有日志吧?

论坛徽章:
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3 [报告]
发表于 2009-03-19 09:49 |只看该作者

回复 #1 zsp226 的帖子

CPU、内存负载都不是很高

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4 [报告]
发表于 2009-03-19 09:50 |只看该作者
看应用的SQL语句吧。

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5 [报告]
发表于 2009-03-19 09:50 |只看该作者
数据库死掉的过程中,通过抓包工具抓包,没有什么异常情况。一开始还以为dos,后面发现根本没有。

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6 [报告]
发表于 2009-03-19 09:52 |只看该作者
sql语句很普通,执行一次才发0.07秒。

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白银圣斗士
日期:2015-11-23 08:33:04
7 [报告]
发表于 2009-03-19 09:58 |只看该作者
所以问题你都否定了。。 难怪解决不了

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8 [报告]
发表于 2009-03-19 10:05 |只看该作者
数据库的并发数不足?

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9 [报告]
发表于 2009-03-19 10:05 |只看该作者
都不是很想麻烦大家,能够自己解决的自己解决。

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10 [报告]
发表于 2009-03-19 10:07 |只看该作者
改过了,以前是1024,死掉掉;现在是2048,也死掉掉了。
show processlist; 一大堆的locked 。
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