mysql多实例安装步骤以及解决Mysql多实例（同ip不同端口）...

54324

                        mysql多实例安装步骤以及解决Mysql多实例（同ip不同端口）重启后登录不上
1 mysql多实例安装和配置yum install ncurses-devel libaio-devel-y   ##安装Mysql相关依赖包
rpm -qa ncurses-devel libaio-devel  ##检查
cat /etc/cache/yum.conf
keepcache=1 ##改为1，存为yum包
ll /var/cache/yum/   ##yum包保存目录

tar xf cmake-2.8.8.tar.gz   ##安装cmake包，mysql编译软件
cd cmake-2.8.8
./configure
gmake
gmake install

useradd mysql -s /sbin/nologin -M

tar zxf mysql-5.5.32.tar.gz
cd mysql-5.5.32
cmake . -DCMAKE_INSTALL_PREFIX=/application/mysql-5.5.32\   #安装路径
-DMYSQL_DATADIR=/application/mysql/data      \    #数据文件存放位置
-DWITH_MYISAM_STORAGE_ENGINE=1   \       #支持MyIASM引擎
-DWITH_INNOBASE_STORAGE_ENGINE=1 \    #支持InnoDB引擎
-DWITH_MEMORY_STORAGE_ENGINE=1 \       #支持Memory引擎
-DWITH_FEDERATED_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITHOUT_EXAMPLE_STORAGE_ENGINE=1 \
-DWITHOUT_PARTITION_STORAGE_ENGINE=1 \
-DWITH_FAST_MUTEXES=1 \
-DWITH_ZLIB=bundled \            
-DENABLED_LOCAL_INFILE=1           \                #允许从本地导入数据
-DWITH_PARTITION_STORAGE_ENGINE=1  \  #安装支持数据库分区
-DEXTRA_CHARSETS=all                 \                   #安装所有的字符集
-DDEFAULT_CHARSET=utf8             \                   #默认字符
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_EMBEDDED_SERVER=1 \
-DWITH_READLINE=1 \
-DWITH_DEBUG=0

make  && make install
ln -s /application/mysql-5.5.32/  /application/mysql

mkdir -p /data/{3306,3307}/data
tree /data
ls -l /application/mysql/support-files/my*.cnf  ##mysql配置文件
my-innodb-heavy-4G.cnf  ##my.cnf详细配置文件解释

vim /data/3306/my.cnf  ##创建mysql配置文件
vim /data/3307/my.cnf

3306   my.cnf

3307   my.cnf

[client] port   = 3306 socket = /data/3306/mysql.sock [mysql] no-auto-rehash [mysqld] user     = mysql port     = 3306 socket   = /data/3306/mysql.sock basedir = /aplication/mysql datadir = /data/3306/data open_files_limit    = 1024 back_log = 600 max_connections = 800 max_connect_errors = 3000 table_cache = 614 external-locking = FALSE max_allowed_packet =8M sort_buffer_size = 1M join_buffer_size = 1M thread_cache_size = 100 thread_concurrency = 2 query_cache_size = 2M query_cache_limit = 1M query_cache_min_res_unit = 2k #default_table_type = InnoDB thread_stack = 192K #transaction_isolation = READ-COMMITTED tmp_table_size = 2M max_heap_table_size = 2M long_query_time = 1 pid-file = /data/3306/mysql.pid relay-log = /data/3306/relay-bin relay-log-info-file =  /data/3306/relay-log.info binlog_cache_size = 1M max_binlog_cache_size = 1M max_binlog_size = 2M key_buffer_size = 16M read_buffer_size = 1M read_rnd_buffer_size = 1M bulk_insert_buffer_size = 1M lower_case_table_names = 1 skip-name-resolve slave-skip-errors = 1032,1062 replicate-ignore-db=mysql server-id = 1 innodb_additional_mem_pool_size = 4M innodb_buffer_pool_size = 32M innodb_data_file_path =  ibdata1:128M:autoextend innodb_file_io_threads = 4 innodb_thread_concurrency = 8 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 2M innodb_log_file_size = 4M innodb_log_files_in_group = 3 innodb_max_dirty_pages_pct = 90 innodb_lock_wait_timeout = 120 innodb_file_per_table = 0 [mysqldump] quick max_allowed_packet = 2M [mysqld_safe] log-error=/data/3306/mysql_3306.err pid-file=/data/3306/mysqld.pid

[client]    ##客户端 port  = 3307 socket =  /data/3307/mysql.sock [mysql] no-auto-rehash [mysqld]    ##服务端 user     = mysql port    = 3307 socket  = /data/3307/mysql.sock basedir = /aplication/mysql  ##安装路径 datadir = /data/3307/data   ##数据文件 open_files_limit    = 1024 back_log = 600 max_connections = 800 max_connect_errors = 3000 table_cache = 614 external-locking = FALSE max_allowed_packet =8M sort_buffer_size = 1M join_buffer_size = 1M thread_cache_size = 100 thread_concurrency = 2 query_cache_size = 2M query_cache_limit = 1M query_cache_min_res_unit = 2k #default_table_type = InnoDB thread_stack = 192K #transaction_isolation = READ-COMMITTED tmp_table_size = 2M max_heap_table_size = 2M long_query_time = 1 pid-file =  /data/3307/mysql.pid relay-log = /data/3307/relay-bin relay-log-info-file =  /data/3307/relay-log.info binlog_cache_size = 1M max_binlog_cache_size = 1M max_binlog_size = 2M key_buffer_size = 16M read_buffer_size = 1M read_rnd_buffer_size = 1M bulk_insert_buffer_size = 1M lower_case_table_names = 1 skip-name-resolve slave-skip-errors = 1032,1062 replicate-ignore-db=mysql server-id = 3 innodb_additional_mem_pool_size = 4M innodb_buffer_pool_size = 32M innodb_data_file_path =  ibdata1:128M:autoextend innodb_file_io_threads = 4 innodb_thread_concurrency = 8 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 2M innodb_log_file_size = 4M innodb_log_files_in_group = 3 innodb_max_dirty_pages_pct = 90 innodb_lock_wait_timeout = 120 innodb_file_per_table = 0 [mysqldump] quick max_allowed_packet = 2M [mysqld_safe] log-error=/data/3307/mysql_3307.err  ##错误信息 pid-file=/data/3307/mysqld.pid

vim /data/3306/mysql   ##mysql多实例启动文件
vim /data/3307/mysql

3306/mysql

3307/mysql

#!/bin/sh #init port=3306 mysql_user="root" mysql_pwd="a13593029788" CmdPath="/aplication/mysql/bin" mysql_sock="/data/${port}/mysql.sock" #startup function function_start_mysql() {     if [ ! -e "$mysql_sock" ];then       printf "Starting MySQL...\n"      /bin/sh ${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf  2>&1   >  /dev/null  &    else    printf "MySQL is running ...\n"    exit    fi } #stop function function_stop_mysql() {    if [ ! -e "$mysql_sock" ];then    printf "MySQL is stopped...\n"    exit    else      printf "Stoping MySQL...\n"     ${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock shutdown fi } #restart function function_restart_mysql() { printf "Restarting MySQL...\n" function_stop_mysql sleep 2 function_start_mysql } case $1 in start) function_start_mysql ;; stop) function_stop_mysql ;; restart) function_restart_mysql ;; *)    printf "Usage: /data/${port}/mysql{start|stop|restart}\n" esac

#/bin/sh #init port=3307 mysql_user="root" mysql_pwd="a13593029788" CmdPath="/aplication/mysql/bin" mysql_sock="/data/${port}/mysql.sock" #startup function function_start_mysql() {     if [ ! -e "$mysql_sock" ];then       printf "Starting MySQL...\n"      /bin/sh ${CmdPath}/mysqld_safe  --defaults-file=/data/${port}/my.cnf   2>&1  >  /dev/null   &    else    printf "MySQL is running ...\n"    exit    fi } #stop function function_stop_mysql() {    if [ ! -e "$mysql_sock" ];then    printf "MySQL is stopped...\n"    exit    else      printf "Stoping MySQL...\n"     ${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock  shutdown fi } #restart function function_restart_mysql() { printf "Restarting MySQL...\n" function_stop_mysql sleep 2 function_start_mysql } case $1 in start) function_start_mysql ;; stop) function_stop_mysql ;; restart) function_restart_mysql ;; *)    printf "Usage: /data/${port}/mysql{start|stop|restart}\n" esac

chown -R mysql.mysql /data
find /data -type f -name ”my.cnf” |xargs ls-l
find /data -type f -name ”mysql” |xargschmod 700 ##控制权限，除了mysql和root，其他看不了

ls -l /aplication/mysql/bin/mysql

echo ’exportPATH=/aplication/mysql/bin:$PATH’  >>/etc/profile

source/etc/profile

echo$PATH

whichmysql                                       

或：

ln -s /aplication/mysql/bin/*/usr/local/sbin/  ##通过软链接设置环境变量

ls -s /usr/local/sbin/mysql*

初始化mysql数据：
cd /aplication/mysql/scripts/
./mysql_install_db --basedir=/aplication/mysql/--datadir=/data/3306/data/ --user=mysql
./mysql_install_db --basedir=/aplication/mysql/--datadir=/data/3307/data/ --user=mysql
有2个OK即成功。有error不能忽略。
/data/3306/mysql start  ##启动
/data/3307/mysql start
netstat -lntup |grep 330  ##查看启动进程
tree /data  ##查看data目录结构

排错：
grep log-error my.cnf|tail -1
tail -100 /data/3306/mysql_3306.err ##查看错误日志
2 mysql多实例登录登录：
mysqladmin -uroot password oldboy -S /data/3306/mysql.sock##给3306数据库创建账号密码
mysql -S /data/3306/mysql.sock  ##登录3306数据库
或 mysql -uroot-pa13593029788  -S  /data/3307/mysql.sock  ##带账号密码登录3307数据库（一定注意命令格式，否则容易登不上）
sed -n ’13p’ /data/3306/mysql
sed -e ’13 s#oldboy#oldboy123#g’/data/3306/mysql ##改密码
sed -e ’13 s#oldboy#oldboy456#g’/data/3307/mysql
/data/3306/mysql stop  ##停止数据库
ss -lntuo|grep 3306 ##查看进程是否停止
本地登陆，根据mysql.sock文件建立本地连接，确定具体登陆到那个实例。
远程登录，通过TCP端口port制定所需登录的mysql实例：端口port——例：mysql –uroot –pa13593029788 –h10.0.0.7 –P 3307，-P为端口参数，接具体实例端口。提前在10.0.0.7对root用户做授权。
3 增加一个Mysql实例mkdir –p /data/3308/data
\cp /data/3306/my.cnf  /data/3308/
\cp /data/3306/mysql  /data/3308/
sed –i ’s/3306/3308/g’ /data/3308/my.cnf
sed –i ’s/server-id=1/ server-id=8/g’/data/3308/my.cnf
sed –i ’s/3306/3308/g’ /data/3308/mysql
chown –R mysql:mysql /data/3308
chmod 700 /data/3308/mysql
cd /aplication/mysql/scripts
./mysql_install_db--basedir=/aplication/mysql/ --datadir=/data/3308/data/ --user=mysql
chown –R mysql:mysql /data/3308
/data/3308/mysql start
sleep 5
netstat –lntup|grep 3308
mysql –S /data/3308/mysql.sock

4 重启后多实例登录不上解决办法
service mysqld stop  ##mysqld占用3306端口，与多实例的3306冲突，先关掉。
cd /data/3306  
rm -rf mysql.sock mysqld.pid  ##删掉.pid文件和.sock文件，重新生成

cd /data/3307  

rm -rf mysql.sock mysqld.pid

cd /data/3308  

rm -rf mysql.sock mysqld.pid

/data/3306/mysql start  ##再次开启mysql服务
/data/3307/mysql start
/data/3308/mysql start
netstat -lntup|grep 330  ##查看端口服务是否开启
若出现mysql的PID文件找不到，则杀掉相关进程。

[iyunv@leslie data]# service mysqld status
ERROR! Multiple MySQL running but PID file could not be found (5209 4477 3710)
[iyunv@leslie data]# kill 5209
[iyunv@leslie data]# kill 4488
[iyunv@leslie data]# kill 3710
[iyunv@leslie data]# service mysqld restart
ERROR! MySQL server PID file could not be found!
Starting MySQL.. SUCCESS!
[iyunv@leslie 3306]# service mysqld stop