操作系统:CentOS 5.6 x86_64
硬件环境:
CPU:Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
内存:32G
硬盘:300G*2 10K
软件环境:
gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)
mysql 5.1.59.tar.gz
libunwind-1.0.tar.gz
google-perftools-1.8.3.tar.gz
上述软件假设存放在目录/root/soft下
实验目的:在CentOS下安装MySQL并实现多实例数据库服务器及innodb-plugin应用
步骤:
#创建日志和运行目录
mkdir -p /opt/logs /opt/run
chmod 777 /opt/run
#添加组和用户
groupadd mysql
useradd -g mysql -s /sbin/nologin mysql
#安装libunwind
- tar zxf libunwind-1.0.tar.gz
- cd libunwind-1.0
- autoreconf -fi
- CHOST="x86_64-redhat-linux" \
- CFLAGS="-O3 -fPIC -fomit-frame-pointer \
- -pipe -march=nocona -mfpmath=sse -m128bit-long-double \
- -mmmx -msse -msse2 -maccumulate-outgoing-args -m64 \
- -ftree-loop-linear -fprefetch-loop-arrays -fno-omit-frame-pointer \
- -freg-struct-return -fgcse-sm -fgcse-las -frename-registers \
- -fforce-addr -fivopts -ftree-vectorize -ftracer -frename-registers \
- -minline-all-stringops -fbranch-target-load-optimize2" CXXFLAGS="${CFLAGS}" ./configure
- make && make install
#安装google-perftools
echo "/usr/local/lib" > /etc/ld.so.conf.d/usr_local_lib.conf
- tar zxf google-perftools-1.8.3.tar.gz
- cd google-perftools-1.8.3
- CHOST="x86_64-redhat-linux" \
- CFLAGS="-O3 -fomit-frame-pointer -pipe -march=nocona \
- -mfpmath=sse -m128bit-long-double -mmmx -msse -msse2 \
- -maccumulate-outgoing-args -m64 -ftree-loop-linear \
- -fprefetch-loop-arrays -fno-omit-frame-pointer \
- -freg-struct-return -fgcse-sm -fgcse-las \
- -fforce-addr -fivopts -ftree-vectorize -ftracer \
- -frename-registers -minline-all-stringops \
- -fbranch-target-load-optimize2" \
- CXXFLAGS="${CFLAGS} -DTCMALLOC_LARGE_PAGES" \
- ./configure \
- --disable-heap-checker \
- --disable-debugalloc \
- --enable-frame-pointers
- make && make install
echo "/usr/lib" >> /etc/ld.so.conf.d/usr_local_lib.conf
echo "/usr/lib64" >> /etc/ld.so.conf.d/usr_local_lib.conf
echo "/usr/local/lib64" >> /etc/ld.so.conf.d/usr_local_lib.conf
/sbin/ldconfig
#安装MySQL
#创建数据库数据存放目录
- tar zxf mysql-5.1.59.tar.gz
- cd mysql-5.1.59
- CXX=gcc CHOST="x86_64-redhat-linux" 、
- CFLAGS="-O3 -fomit-frame-pointer -pipe -march=nocona -mfpmath=sse \
- -m128bit-long-double -mmmx -msse -msse2 -maccumulate-outgoing-args \
- -m64 -ftree-loop-linear -fprefetch-loop-arrays \
- -freg-struct-return -fgcse-sm -fgcse-las -fforce-addr \
- -fivopts -ftree-vectorize -ftracer -frename-registers \
- -minline-all-stringops -fno-exceptions -fno-omit-frame-pointer \
- -fbranch-target-load-optimize2" CXXFLAGS="${CFLAGS}" \
- LDFLAGS="-lrt -lunwind -ltcmalloc_minimal -lstdc++ " \
- ./configure \
- --prefix=/opt/mysql \
- --with-server-suffix=-greenshore \
- --with-mysqld-user=mysql \
- --with-plugins=federated,partition,innodb_plugin,myisam \
- --with-charset=utf8 \
- --with-collation=utf8_general_ci \
- --with-extra-charsets=gbk,utf8,ascii \
- --with-big-tables \
- --with-fast-mutexes \
- --with-zlib-dir=bundled \
- --with-readline \
- --with-pthread \
- --enable-assembler \
- --enable-profiling \
- --enable-local-infile \
- --enable-thread-safe-client \
- --without-embedded-server \
- --without-geometry \
- --without-debug \
- --without-ndb-binlog
- --without-ndb-debug
- make && make install
mkdir /opt/mysql/var
#添加mysql的目录到系统环境变量
echo "export PATH=$PATH:/opt/mysql/bin" >> /etc/profile
source /etc/profile //让环境变量生效
echo "/opt/mysql/lib/mysql" >> /etc/ld.so.conf
/sbin/ldconfig
ln -s /opt/mysql/lib/mysql /usr/lib64/mysql 创建库链接
ln -s /opt/mysql/include/mysql /usr/include/mysql 创建库链接
#创建mysql多实例启动脚本
vim /etc/init.d/rc.mysqlmulti
脚本内容:
- #!/bin/sh
- #
- # A simple startup script for mysqld_multi by Tim Smith and Jani Tolonen.
- # This script assumes that my.cnf file exists either in /etc/my.cnf or
- # /root/.my.cnf and has groups [mysqld_multi] and [mysqldN]. See the
- # mysqld_multi documentation for detailed instructions.
- #
- # This script can be used as /etc/init.d/mysql.server
- #
- # Comments to support chkconfig on RedHat Linux
- # chkconfig: 2345 64 36
- # description: A very fast and reliable SQL database engine.
- #
- # Version 1.0
- #
- basedir=/opt/mysql
- bindir=/opt/mysql/bin
- user=mysql
- if test -x $bindir/mysqld_multi
- then
- mysqld_multi="$bindir/mysqld_multi";
- else
- echo "Can't execute $bindir/mysqld_multi from dir $basedir";
- exit;
- fi
- case "$1" in
- 'start' )
- "$mysqld_multi" --defaults-extra-file=/etc/my.cnf start $2
- ;;
- 'stop' )
- "$mysqld_multi" --defaults-extra-file=/etc/my.cnf stop $2
- ;;
- 'report' )
- "$mysqld_multi" --defaults-extra-file=/etc/my.cnf report $2
- ;;
- 'restart' )
- "$mysqld_multi" --defaults-extra-file=/etc/my.cnf stop $2
- "$mysqld_multi" --defaults-extra-file=/etc/my.cnf start $2
- ;;
- *)
- echo "Usage: $0 {start|stop|report|restart}" >&2
- ;;
- esac
#编辑/etc/my.cnf
vim /etc/my.cnf
输入一下内容
- [mysqld_multi]
- mysqld = /opt/mysql/bin/mysqld_safe
- mysqladmin = /opt/mysql/bin/mysqladmin
- user = root
- password = VxAyENUSlAqWY2YTZx6G
- [mysqld0001]
- bind-address = 10.2.1.6
- default-storage-engine = innodb
- character-set-server = utf8
- collation-server = utf8_general_ci
- lower_case_table_names = 1
- basedir = /opt/mysql
- datadir = /opt/mysql/var/0001
- ft_min_word_len = 4
- user = mysql
- ## File
- back_log = 500
- open-files-limit = 102400
- open-files = 4096
- port = 3301
- socket = /tmp/mysql0001.sock
- pid-file = /opt/run/mysql0001.pid
- skip-external-locking
- skip-name-resolve
- ## Logging
- log_error = /opt/mysql/var/0001/mysql-error.err
- log_warnings
- log_bin = /opt/mysql/var/0001/mysql-bin
- expire_logs_days = 2
- #log-slow-queries =/opt/mysql/var/0001/slowquery.log
- #long_query_time = 1
- max_binlog_size = 512M #max size for binlog before rolling
- binlog_format = mixed
- ## Per-Thread Buffers * (max_connections) = total per-thread mem usage
- thread_stack = 256K #default: 32bit: 192K, 64bit: 256K
- sort_buffer_size = 8M #default: 2M, larger may cause perf issues
- read_buffer_size = 2M #default: 128K, change in increments of 4K
- read_rnd_buffer_size = 16M #default: 256K
- join_buffer_size = 8M #default: 128K
- binlog_cache_size = 64K #default: 32K, size of buffer to hold TX queries
- ## Query Cache
- query_cache_size = 64M #global buffer
- query_cache_limit = 2M #max query result size to put in cache
- ## Connections
- max_connections = 4000 #multiplier for memory usage via per-thread buffers
- max_connect_errors = 100 #default: 10
- concurrent_insert = 2 #default: 1, 2: enable insert for all instances
- connect_timeout = 30
- max_allowed_packet = 64M #max size of incoming data to allow
- net_buffer_length = 1024K
- ## Default Table Settings
- sql_mode = NO_AUTO_CREATE_USER
- ## Table and TMP settings
- max_heap_table_size = 1G
- bulk_insert_buffer_size = 1G
- tmp_table_size = 1G
- tmpdir = /dev/shm
- ## Table cache settings
- table_cache = 2048
- table_open_cache = 2048
- ## Thread settings
- thread_concurrency = 32
- thread_cache_size = 100
- ## MyISAM Specific options
- key_buffer_size = 256M
- bulk_insert_buffer_size = 64M
- myisam_sort_buffer_size = 128M
- myisam_max_sort_file_size = 2G
- myisam_repair_threads = 1
- myisam_recover
- # *** INNODB Specific options ***
- ignore-builtin-innodb
- plugin-load=innodb=ha_innodb_plugin.so;innodb_trx=ha_innodb_plugin.so;innodb_locks=ha_innodb_plugin.so;innodb_lock_waits=ha_innodb_plugin.so;innodb_cmp=ha_innodb_plugin.so;innodb_cmp_reset=ha_innodb_plugin.so;innodb_cmpmem=ha_innodb_plugin.so;innodb_cmpmem_reset=ha_innodb_plugin.so
- innodb_io_capacity = 400
- innodb_write_io_threads = 16
- innodb_read_io_threads = 16
- innodb_data_file_path = ibdata1:128M;ibdata2:10M:autoextend
- innodb_log_file_size = 512M
- innodb_log_files_in_group = 4
- innodb_buffer_pool_size = 4G
- innodb_additional_mem_pool_size = 16M
- innodb_status_file = 1
- innodb_file_per_table = 1
- innodb_flush_log_at_trx_commit = 2
- innodb_table_locks = 0
- innodb_log_buffer_size = 128M
- innodb_lock_wait_timeout = 60
- innodb_thread_concurrency = 32
- innodb_commit_concurrency = 8
- innodb_flush_method = O_DIRECT
- innodb_support_xa = 0
- skip-innodb-doublewrite
- ## Binlog sync settings
- sync_binlog = 0
- ## TX Isolation
- transaction-isolation = REPEATABLE-READ
- [mysqld0002]
- bind-address = 10.2.1.6
- default-storage-engine = innodb
- character-set-server = utf8
- collation-server = utf8_general_ci
- lower_case_table_names = 1
- basedir = /opt/mysql
- datadir = /opt/mysql/var/0002
- ft_min_word_len = 4
- user = mysql
- ## File
- back_log = 500
- open-files-limit = 102400
- open-files = 4096
- port = 3302
- socket = /tmp/mysql0002.sock
- pid-file = /opt/run/mysql0002.pid
- skip-external-locking
- skip-name-resolve
- ## Logging
- log_error = /opt/mysql/var/0002/mysql-error.err
- log_warnings
- log_bin = /opt/mysql/var/0002/mysql-bin
- expire_logs_days = 2
- #log-slow-queries =/opt/mysql/var/0002/slowquery.log
- #long_query_time = 1
- max_binlog_size = 512M #max size for binlog before rolling
- binlog_format = mixed
- ## Per-Thread Buffers * (max_connections) = total per-thread mem usage
- thread_stack = 256K #default: 32bit: 192K, 64bit: 256K
- sort_buffer_size = 8M #default: 2M, larger may cause perf issues
- read_buffer_size = 2M #default: 128K, change in increments of 4K
- read_rnd_buffer_size = 16M #default: 256K
- join_buffer_size = 8M #default: 128K
- binlog_cache_size = 64K #default: 32K, size of buffer to hold TX queries
- ## Query Cache
- query_cache_size = 64M #global buffer
- query_cache_limit = 2M #max query result size to put in cache
- ## Connections
- max_connections = 4000 #multiplier for memory usage via per-thread buffers
- max_connect_errors = 100 #default: 10
- concurrent_insert = 2 #default: 1, 2: enable insert for all instances
- connect_timeout = 30
- max_allowed_packet = 64M #max size of incoming data to allow
- net_buffer_length = 1024K
- ## Default Table Settings
- sql_mode = NO_AUTO_CREATE_USER
- ## Table and TMP settings
- max_heap_table_size = 1G
- bulk_insert_buffer_size = 1G
- tmp_table_size = 1G
- tmpdir = /dev/shm
- ## Table cache settings
- table_cache = 2048
- table_open_cache = 2048
- ## Thread settings
- thread_concurrency = 32
- thread_cache_size = 100
- ## MyISAM Specific options
- key_buffer_size = 256M
- bulk_insert_buffer_size = 64M
- myisam_sort_buffer_size = 128M
- myisam_max_sort_file_size = 2G
- myisam_repair_threads = 1
- myisam_recover
- # *** INNODB Specific options ***
- ignore-builtin-innodb
- plugin-load=innodb=ha_innodb_plugin.so;innodb_trx=ha_innodb_plugin.so;innodb_locks=ha_innodb_plugin.so;innodb_lock_waits=ha_innodb_plugin.so;innodb_cmp=ha_innodb_plugin.so;innodb_cmp_reset=ha_innodb_plugin.so;innodb_cmpmem=ha_innodb_plugin.so;innodb_cmpmem_reset=ha_innodb_plugin.so
- innodb_io_capacity = 400
- innodb_write_io_threads = 16
- innodb_read_io_threads = 16
- innodb_data_file_path = ibdata1:128M;ibdata2:10M:autoextend
- innodb_log_file_size = 512M
- innodb_log_files_in_group = 4
- innodb_buffer_pool_size = 4G
- innodb_additional_mem_pool_size = 16M
- innodb_status_file = 1
- innodb_file_per_table = 1
- innodb_flush_log_at_trx_commit = 2
- innodb_table_locks = 0
- innodb_log_buffer_size = 128M
- innodb_lock_wait_timeout = 60
- innodb_thread_concurrency = 32
- innodb_commit_concurrency = 8
- innodb_flush_method = O_DIRECT
- innodb_support_xa = 0
- skip-innodb-doublewrite
- ## Binlog sync settings
- sync_binlog = 0
- ## TX Isolation
- transaction-isolation = REPEATABLE-READ
- [mysqld0003]
- bind-address = 10.2.1.6
- default-storage-engine = innodb
- character-set-server = utf8
- collation-server = utf8_general_ci
- lower_case_table_names = 1
- basedir = /opt/mysql
- datadir = /opt/mysql/var/0003
- ft_min_word_len = 4
- user = mysql
- ## File
- back_log = 500
- open-files-limit = 102400
- open-files = 4096
- port = 3303
- socket = /tmp/mysql0003.sock
- pid-file = /opt/run/mysql0003.pid
- skip-external-locking
- skip-name-resolve
- ## Logging
- log_error = /opt/mysql/var/0003/mysql-error.err
- log_warnings
- log_bin = /opt/mysql/var/0003/mysql-bin
- expire_logs_days = 2
- #log-slow-queries =/opt/mysql/var/0003/slowquery.log
- #long_query_time = 1
- max_binlog_size = 512M #max size for binlog before rolling
- binlog_format = mixed
- ## Per-Thread Buffers * (max_connections) = total per-thread mem usage
- thread_stack = 256K #default: 32bit: 192K, 64bit: 256K
- sort_buffer_size = 8M #default: 2M, larger may cause perf issues
- read_buffer_size = 2M #default: 128K, change in increments of 4K
- read_rnd_buffer_size = 16M #default: 256K
- join_buffer_size = 8M #default: 128K
- binlog_cache_size = 64K #default: 32K, size of buffer to hold TX queries
- ## Query Cache
- query_cache_size = 64M #global buffer
- query_cache_limit = 2M #max query result size to put in cache
- ## Connections
- max_connections = 4000 #multiplier for memory usage via per-thread buffers
- max_connect_errors = 100 #default: 10
- concurrent_insert = 2 #default: 1, 2: enable insert for all instances
- connect_timeout = 30
- max_allowed_packet = 64M #max size of incoming data to allow
- net_buffer_length = 1024K
- ## Default Table Settings
- sql_mode = NO_AUTO_CREATE_USER
- ## Table and TMP settings
- max_heap_table_size = 1G
- bulk_insert_buffer_size = 1G
- tmp_table_size = 1G
- tmpdir = /dev/shm
- ## Table cache settings
- table_cache = 2048
- table_open_cache = 2048
- ## Thread settings
- thread_concurrency = 32
- thread_cache_size = 100
- ## MyISAM Specific options
- key_buffer_size = 256M
- bulk_insert_buffer_size = 64M
- myisam_sort_buffer_size = 128M
- myisam_max_sort_file_size = 2G
- myisam_repair_threads = 1
- myisam_recover
- # *** INNODB Specific options ***
- ignore-builtin-innodb
- plugin-load=innodb=ha_innodb_plugin.so;innodb_trx=ha_innodb_plugin.so;innodb_locks=ha_innodb_plugin.so;innodb_lock_waits=ha_innodb_plugin.so;innodb_cmp=ha_innodb_plugin.so;innodb_cmp_reset=ha_innodb_plugin.so;innodb_cmpmem=ha_innodb_plugin.so;innodb_cmpmem_reset=ha_innodb_plugin.so
- innodb_io_capacity = 400
- innodb_write_io_threads = 16
- innodb_read_io_threads = 16
- innodb_data_file_path = ibdata1:128M;ibdata2:10M:autoextend
- innodb_log_file_size = 512M
- innodb_log_files_in_group = 4
- innodb_buffer_pool_size = 4G
- innodb_additional_mem_pool_size = 16M
- innodb_status_file = 1
- innodb_file_per_table = 1
- innodb_flush_log_at_trx_commit = 2
- innodb_table_locks = 0
- innodb_log_buffer_size = 128M
- innodb_lock_wait_timeout = 60
- innodb_thread_concurrency = 32
- innodb_commit_concurrency = 8
- innodb_flush_method = O_DIRECT
- innodb_support_xa = 0
- skip-innodb-doublewrite
- ## Binlog sync settings
- sync_binlog = 0
- ## TX Isolation
- transaction-isolation = REPEATABLE-READ
- [mysqld0004]
- bind-address = 10.2.1.6
- default-storage-engine = innodb
- character-set-server = utf8
- collation-server = utf8_general_ci
- lower_case_table_names = 1
- basedir = /opt/mysql
- datadir = /opt/mysql/var/0004
- ft_min_word_len = 4
- user = mysql
- ## File
- back_log = 500
- open-files-limit = 102400
- open-files = 4096
- port = 3304
- socket = /tmp/mysql0004.sock
- pid-file = /opt/run/mysql0004.pid
- skip-external-locking
- skip-name-resolve
- ## Logging
- log_error = /opt/mysql/var/0004/mysql-error.err
- log_warnings
- log_bin = /opt/mysql/var/0004/mysql-bin
- expire_logs_days = 2
- #log-slow-queries =/opt/mysql/var/0004/slowquery.log
- #long_query_time = 1
- max_binlog_size = 512M #max size for binlog before rolling
- binlog_format = mixed
- ## Per-Thread Buffers * (max_connections) = total per-thread mem usage
- thread_stack = 256K #default: 32bit: 192K, 64bit: 256K
- sort_buffer_size = 8M #default: 2M, larger may cause perf issues
- read_buffer_size = 2M #default: 128K, change in increments of 4K
- read_rnd_buffer_size = 16M #default: 256K
- join_buffer_size = 8M #default: 128K
- binlog_cache_size = 64K #default: 32K, size of buffer to hold TX queries
- ## Query Cache
- query_cache_size = 64M #global buffer
- query_cache_limit = 2M #max query result size to put in cache
- ## Connections
- max_connections = 4000 #multiplier for memory usage via per-thread buffers
- max_connect_errors = 100 #default: 10
- concurrent_insert = 2 #default: 1, 2: enable insert for all instances
- connect_timeout = 30
- max_allowed_packet = 64M #max size of incoming data to allow
- net_buffer_length = 1024K
- ## Default Table Settings
- sql_mode = NO_AUTO_CREATE_USER
- ## Table and TMP settings
- max_heap_table_size = 1G
- bulk_insert_buffer_size = 1G
- tmp_table_size = 1G
- tmpdir = /dev/shm
- ## Table cache settings
- table_cache = 2048
- table_open_cache = 2048
- ## Thread settings
- thread_concurrency = 32
- thread_cache_size = 100
- ## MyISAM Specific options
- key_buffer_size = 256M
- bulk_insert_buffer_size = 64M
- myisam_sort_buffer_size = 128M
- myisam_max_sort_file_size = 2G
- myisam_repair_threads = 1
- myisam_recover
- # *** INNODB Specific options ***
- ignore-builtin-innodb
- plugin-load=innodb=ha_innodb_plugin.so;innodb_trx=ha_innodb_plugin.so;innodb_locks=ha_innodb_plugin.so;innodb_lock_waits=ha_innodb_plugin.so;innodb_cmp=ha_innodb_plugin.so;innodb_cmp_reset=ha_innodb_plugin.so;innodb_cmpmem=ha_innodb_plugin.so;innodb_cmpmem_reset=ha_innodb_plugin.so
- innodb_io_capacity = 400
- innodb_write_io_threads = 16
- innodb_read_io_threads = 16
- innodb_data_file_path = ibdata1:128M;ibdata2:10M:autoextend
- innodb_log_file_size = 512M
- innodb_log_files_in_group = 4
- innodb_buffer_pool_size = 4G
- innodb_additional_mem_pool_size = 16M
- innodb_status_file = 1
- innodb_file_per_table = 1
- innodb_flush_log_at_trx_commit = 2
- innodb_table_locks = 0
- innodb_log_buffer_size = 128M
- innodb_lock_wait_timeout = 60
- innodb_thread_concurrency = 32
- innodb_commit_concurrency = 8
- innodb_flush_method = O_DIRECT
- innodb_support_xa = 0
- skip-innodb-doublewrite
- ## Binlog sync settings
- sync_binlog = 0
- ## TX Isolation
- transaction-isolation = REPEATABLE-READ
- [mysqldump]
- quick
- max_allowed_packet = 128M
- [mysql]
- no-auto-rehash
- [myisamchk]
- key_buffer_size = 256M
- sort_buffer_size = 512M
- read_buffer = 8M
- write_buffer = 8M
- [mysqlhotcopy]
- interactive-timeout
- [mysqld_safe]
- open-files-limit = 102400
#执行如下命令用于关闭/etc/my.cnf跟innodb的参数
sed -i 's:^innodb:#innodb:' /etc/my.cnf
sed -i 's:skip-innodb-doublewrite:#skip-innodb-doublewrite:' /etc/my.cnf
sed -i 's:default-storage-engine = innodb:default-storage-engine = myisam:' /etc/my.cnf
#初始化数据库以及设置root密码
- for (( i=1;i<=4;i++ ))
- do
- mkdir /opt/mysql/var/000$i
- chown -R mysql.mysql /opt/mysql/var/000$i
- echo "Inition DB 000$i"
- /opt/mysql/bin/mysql_install_db --user=mysql --datadir=/opt/mysql/var/000$i > /dev/null 2>&1
- echo "Start MySQL instance 000$i"
- /etc/init.d/rc.mysqlmulti start 000$i
- sleep 30
- echo "Set root Password"
- /opt/mysql/bin/mysql --user=root --password='' -S /tmp/mysql000$i.sock -e "grant all privileges on *.* to root@'localhost' identified by 'VxAyENUSlAqWY2YTZx6G';grant all privileges on *.* to root@'127.0.0.1' identified by '**********';"
- /etc/init.d/rc.mysqlmulti stop 000$i
- rm -rf /opt/mysql/var/000$i/ib*
- done;
#开启innodb-plugin参数
sed -i 's:#innodb:innodb:' /etc/my.cnf
sed -i 's:#skip-innodb-doublewrite:skip-innodb-doublewrite:' /etc/my.cnf
sed -i 's:default-storage-engine = myisam:default-storage-engine = innodb:' /etc/my.cnf
#启动数据库0001-0004,执行下面的指令后,数据库0001-0004将重新生成innodb所需的文件
/etc/init.d/rc.mysqlmulti start
#连接数据库
mysql -uroot -p******** -S /tmp/mysql0001.sock //登陆数据库0001
mysql -uroot -p******** -S /tmp/mysql0002.sock //登陆数据库0002
mysql -uroot -p******** -S /tmp/mysql0003.sock //登陆数据库0003
mysql -uroot -p******** -S /tmp/mysql0003.sock //登陆数据库0004