02-mysql多实例操作指南

安装3306端口

1、安装前准备

#检查mysqld及安装依赖
netstat -antlp|grep mysqld
yum install -y perl perl-devel autoconf git gcc gcc-c++ pcre pcre-devel openssl openssl-devel zlib zlib-devel cmake ncurses ncurses-devel bison bison-devel

#检查mysql用户
id mysql
grep mysql /etc/passwd
adduser -u 1050 -s /sbin/nologin -M mysql

#创建多实例目录
mkdir -p /data/mysql3306/{data,etc,logs,var,tmp}

2、下载安装boost

cd /home/nameke/tools/
wget -c https://mirrors.tuna.tsinghua.edu.cn/mysql/downloads/MySQL-5.7/mysql-5.7.34.tar.gz --no-check-certificate
wget -c http://sourceforge.net/projects/boost/files/boost/1.59.0/boost_1_59_0.tar.gz
mkdir /usr/local/boost && cp -f boost_1_59_0.tar.gz /usr/local/boost/
cd /usr/local/boost/ && tar -zxf boost_1_59_0.tar.gz
chown -R root:root /usr/local/boost && chmod 755 /usr/local/boost/boost_1_59_0

3、安装mysql

cd /home/nameke/tools/ && tar -zxf mysql-5.7.34.tar.gz
cd /home/nameke/tools/mysql-5.7.34/ && cmake . -DCMAKE_INSTALL_PREFIX=/data/mysql3306 \
-DSYSCONFDIR=/data/mysql3306/etc \
-DDEFAULT_CHARSET=utf8mb4 \
-DDEFAULT_COLLATION=utf8mb4_general_ci \
-DENABLED_LOCAL_INFILE=ON \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_FEDERATED_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITHOUT_EXAMPLE_STORAGE_ENGINE=1 \
-DWITH_PARTITION_STORAGE_ENGINE=1 \
-DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \
-DMYSQL_UNIX_ADDR=/data/mysql3306/var/mysql.sock \
-DCOMPILATION_COMMENT='Mysqlma' \
-DWITH_READLINE=ON \
-DDOWNLOAD_BOOST=1 \
-DWITH_BOOST=/usr/local/boost

make && make install

4、配置mysql配置文件

cat >>/home/nameke/conf/my.cnf<<EOF
[mysqld]
port = 3306
socket = /data/mysql3306/var/mysql.sock
basedir = /data/mysql3306
datadir = /data/mysql3306/data
pid-file = /data/mysql3306/logs/mysql.pid
user = mysql
bind-address = 0.0.0.0
server-id = 1
init-connect = 'SET NAMES utf8mb4'
character-set-server = utf8mb4
#skip-name-resolve
#skip-networking
back_log = 300
max_connections = 1000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 128
max_allowed_packet = 1M
binlog_cache_size = 1M
max_heap_table_size = 2M
tmp_table_size = 4M
read_buffer_size = 1M
read_rnd_buffer_size = 2M
sort_buffer_size = 2M
join_buffer_size = 2M
key_buffer_size = 1M
thread_cache_size = 8
query_cache_type = 1
query_cache_size = 2M
query_cache_limit = 1M
ft_min_word_len = 4
log_bin = mysql-bin
binlog_format = mixed
expire_logs_days = 30
log_error = /data/mysql3306/logs/mysql-error.log
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /data/mysql3306/logs/mysql-slow.log
performance_schema = 0
explicit_defaults_for_timestamp
#lower_case_table_names = 1
skip-external-locking
default_storage_engine = InnoDB
#default-storage-engine = MyISAM
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 16M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 1M
innodb_log_file_size = 8M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 1G
myisam_repair_threads = 1
interactive_timeout = 28800
wait_timeout = 28800

[mysqldump]
quick
max_allowed_packet = 8M

[mysql]
prompt="\\R:\\m:\\s(\\u@\\h) [\\d]>\\_"
EOF

5、拷贝配置文件

cp -f /home/nameke/conf/my.cnf /data/mysql3306/etc/my.cnf 
chown -R mysql:mysql /data/mysql3306/ 
chown -R mysql:mysql /data/mysql3306

6、mysql初始化

/data/mysql3306/bin/mysqld --initialize-insecure --user=mysql --basedir=/data/mysql3306 --datadir=/data/mysql3306/data 
echo "export PATH=/data/mysql3306/bin:$PATH" >> /etc/profile && source /etc/profile

7、配置systemd开机自启动

cat >>/usr/lib/systemd/system/mysql3306.service<<EOF
[Unit]
Description = MySQL Server
Documentation = man:mysqld(8)
Documentation = http://dev.mysql.com/doc/refman/en/using-systemd.html
After = network.target
After = syslog.target

[Service]
User = mysql
Group = mysql
PIDFile=/data/mysql3306/logs/mysql.pid
ExecStopPost=/bin/rm -f /data/mysql3306/logs/mysql.pid
ExecStart = /data/mysql3306/bin/mysqld --defaults-file=/data/mysql3306/etc/my.cnf 
LimitNOFILE = 5000
#Restart=on-failure
#RestartPreventExitStatus=1
#PrivateTmp=false
[Install]
WantedBy = multi-user.target
EOF

8、启动mysql及设置密码

#启动mysql
netstat -antlp|grep mysqld
systemctl daemon-reload && systemctl start mysql3306.service
systemctl enable mysql3306.service

#登录数据库及修改密码
mysql -u root -p -S /data/mysql3306/var/mysql.sock
mysql>use mysql;

##MySql 5.7以后的user表中password字段已更新为authentication_string
mysql>update user set authentication_string=PASSWORD('zhong2021GUO') where user='root';
mysql>flush privileges;

安装3307端口

重复1-8步骤，注意修改对应的3306为3307即可

 

生产需求

批量扫描集群中带指定关键词的表，如带2021年份的表

[nameke@web01 ~]$ cat iplist 
3306
3307
[nameke@web01 ~]$ cat scripts/select_mysql_tables.sh 
#!/bin/bash
#Author:chenwei

#iplist集群地址列表
cat iplist

for i in `cat iplist` 
do
    #${i}/${i}-db存储集群的db
    mkdir mysql$i && mysql -S /data/mysql$i/var/mysql.sock -P $i -u root -p -e "show databases;"|egrep -iv "Database|sys|mysql|information_schema|performance_schema|test|dumbo" >>mysql${i}/mysql${i}-db
    for n in `cat mysql${i}/mysql${i}-db`
    do
        #${i}/${n}存储db中的带2021的表
        mysql -u root -p -S /data/mysql$i/var/mysql.sock -P $i -e "show tables from $n like '%2021%';" >>mysql${i}/${n}
    done
done