shell脚本一键安装MySQL5.7.29的方法

本文参考51CTO博客作者wjw555的作品

脚本内容：

vim install.mysql.sh

#!/bin/bash

[ -f /etc/init.d/functions ]&& . /etc/init.d/functions

###Check if user is root
if [ $UID -ne 0 ]; then
 echo "Error: You must be root to run this script, please use root to install"
 exit 1
fi

clear
echo "========================================================================="
echo "A tool to auto-compile & install MySQL 5.7.29 on Redhat/CentOS Linux "
echo "========================================================================="
#pkill -9 mysql
#date +%Y-%m-%d-%H-%M
#卸载系统自带的Mysql
#/bin/rpm -e $(/bin/rpm -qa | grep mysql|xargs) --nodeps
#/bin/rpm -e $(/bin/rpm -qa | grep mariadb|xargs) --nodeps
#/bin/rm -f /etc/my.cnf

#set mysql root password
 echo "==========================="
  mysqlrootpwd="$1"
  if [ "$1" = "" ]; then
    mysqlrootpwd="rootmysql"
  fi

#which MySQL Version do you want to install?
echo "==========================="

 isinstallmysql57="5.7.29"
 echo "Install MySQL 5.7.29,Please input y"
 read -p "(Please input y , n):"
# Initialize the installation related content.
 #Delete Old Mysql program
 rpm -qa|grep mysql
 rpm -e mysql

cat >>/etc/security/limits.conf<<EOF
* soft nproc 65535
* hard nproc 65535
* soft nofile 65535
* hard nofile 65535
EOF

echo "fs.file-max=65535" >> /etc/sysctl.conf

echo "============================Install MySQL 5.7.29=================================="

#Backup old my.cnf
#rm -f /etc/my.cnf
if [ -s /etc/my.cnf ]; then
 mv /etc/my.cnf /etc/my.cnf.`date +%Y%m%d%H%M%S`.bak
fi
echo "============================MySQL 5.7.29 installing…………========================="

##define mysql directory configuration variable
Datadir=/data/mysql/data
Binlogdir=/data/mysql/binlog
Logdir=/data/mysql/logs

##yum install devel and wget mysql
yum install numactl
/usr/bin/wget -P /tmp http://mirrors.163.com/mysql/Downloads/MySQL-5.7/mysql-5.7.29-linux-glibc2.12-x86_64.tar.gz
sleep 2
tar xf /tmp/mysql-5.7.29-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
ln -s /usr/local/mysql-5.7.29-linux-glibc2.12-x86_64 /usr/local/mysql
grep mysql /etc/passwd
RETVAL=$?
if [ $RETVAL -ne 0 ];then
 useradd mysql -s /sbin/nologin -M
  action "mysql user added successfully" /bin/true
 else
  action " $(echo -e "\e[31;47;5m mysql user already exists\e[0m")" /bin/false
fi

if [ ! -d "$Datadir" ]
then
 mkdir -p /data/mysql/data
fi

if [ ! -d "$Binlogdir" ]
then
 mkdir -p /data/mysql/binlog
fi

if [ ! -d "$Logdir" ]
then
 mkdir -p /data/mysql/logs
fi

chown -R mysql:mysql /data/mysql
chown -R mysql:mysql /usr/local/mysql

#edit /etc/my.cnf
#SERVERID=`ifconfig eth0 | grep "inet addr" | awk '{ print $2}'| awk -F. '{ print $3$4}'`
cat >>/etc/my.cnf<<EOF
[client]
port   = 3306

[mysql]
auto-rehash
prompt="\\u@\\h [\\d]>"
#pager="less -i -n -S"
#tee=/opt/mysql/query.log

[mysqld]
####: for global
user        =mysql
basedir        =/usr/local/mysql/
datadir        =/data/mysql/data
server_id       =2333306
port        =3306
character_set_server    =utf8
explicit_defaults_for_timestamp  =off
log_timestamps      =system
socket        =/tmp/mysql.sock
read_only       =0
skip_name_resolve     =1
auto_increment_increment   =1
auto_increment_offset    =1
lower_case_table_names    =1
secure_file_priv     =
open_files_limit     =65536
max_connections      =1000
thread_cache_size     =64
table_open_cache     =81920
table_definition_cache    =4096
table_open_cache_instances   =64
max_prepared_stmt_count    =1048576      

####: for binlog
binlog_format      =row
log_bin        =/data/mysql/binlog/mysql-bin
binlog_rows_query_log_events  =on
log_slave_updates     =on
expire_logs_days     =7
binlog_cache_size     =65536
#binlog_checksum     =none
sync_binlog       =1
slave-preserve-commit-order   =ON       

####: for error-log
log_error       =/data/mysql/logs/error.log      

general_log       =off
general_log_file     =/data/mysql/logs/general.log     

####: for slow query log
slow_query_log      =on
slow_query_log_file     =/data/mysql/logs/slow.log
#log_queries_not_using_indexes  =on
long_query_time      =1.000000      

####: for gtid
#gtid_executed_compression_period =1000
gtid_mode       =on
enforce_gtid_consistency   =on        

####: for replication
skip_slave_start      =1
#master_info_repository    =table
#relay_log_info_repository   =table
slave_parallel_type     =logical_clock
slave_parallel_workers    =4
#rpl_semi_sync_master_enabled  =1
#rpl_semi_sync_slave_enabled   =1
#rpl_semi_sync_master_timeout  =1000
#plugin_load_add      =semisync_master.so
#plugin_load_add      =semisync_slave.so
binlog_group_commit_sync_delay  =100
binlog_group_commit_sync_no_delay_count = 10      

####: for innodb
default_storage_engine       =innodb
default_tmp_storage_engine      =innodb
innodb_data_file_path       =ibdata1:1024M:autoextend
innodb_temp_data_file_path      =ibtmp1:12M:autoextend
innodb_buffer_pool_filename      =ib_buffer_pool
innodb_log_group_home_dir      =/data/mysql/data
innodb_log_files_in_group      =3
innodb_log_file_size       =1024M
innodb_file_per_table       =on
innodb_online_alter_log_max_size    =128M
innodb_open_files        =65535
innodb_page_size        =16k
innodb_thread_concurrency      =0
innodb_read_io_threads       =4
innodb_write_io_threads       =4
innodb_purge_threads       =4
innodb_page_cleaners       =4
     # 4(刷新lru脏页)
innodb_print_all_deadlocks      =on
innodb_deadlock_detect       =on
innodb_lock_wait_timeout      =20
innodb_spin_wait_delay       =128
innodb_autoinc_lock_mode      =2
innodb_io_capacity        =200
innodb_io_capacity_max       =2000
#--------Persistent Optimizer Statistics
innodb_stats_auto_recalc      =on
innodb_stats_persistent       =on
innodb_stats_persistent_sample_pages   =20      

innodb_adaptive_hash_index      =on
innodb_change_buffering       =all
innodb_change_buffer_max_size     =25
innodb_flush_neighbors       =1
#innodb_flush_method        =
innodb_doublewrite        =on
innodb_log_buffer_size       =128M
innodb_flush_log_at_timeout      =1
innodb_flush_log_at_trx_commit     =1
innodb_buffer_pool_size       =4096M
innodb_buffer_pool_instances     =4
autocommit          =1
#--------innodb scan resistant
innodb_old_blocks_pct       =37
innodb_old_blocks_time       =1000
#--------innodb read ahead
innodb_read_ahead_threshold      =56
innodb_random_read_ahead      =OFF
#--------innodb buffer pool state
innodb_buffer_pool_dump_pct      =25
innodb_buffer_pool_dump_at_shutdown    =ON
innodb_buffer_pool_load_at_startup    =ON      

EOF

/usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql/data
Pass=$(grep 'A temporary password' /data/mysql/logs/error.log |awk '{print $NF}')
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
chkconfig --add mysqld
chkconfig mysqld on
/etc/init.d/mysqld start
echo "export PATH=$PATH:/usr/local/mysql/bin" > /etc/profile.d/mysql.sh
source /etc/profile.d/mysql.sh
echo "============================MySQL 5.7.29 install completed========================="
ps -eo start,cmd,pid|grep mysql
/usr/local/mysql/bin/mysqladmin -uroot -p"$Pass" password $mysqlrootpwd

[root@localhost ~]# sh install.mysql.sh mysqlroot
[root@localhost ~]# source /etc/profile.d/mysql.sh

说明： mysqlroot 为安装脚本修改MySQL服务默认密码后的新的密码

[root@localhost ~]# mysql -uroot -p'mysqlroot' -e "select now()"
mysql: [Warning] Using a password on the command line interface can be insecure.
+---------------------+
| now()    |
+---------------------+
| 2020-10-13 16:18:47 |
+---------------------+

到此处MySQL服务启动成功！

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