MySQL5.7.25 初始化安装脚本（shell）

#!/bin/bash
echo "初始化安装脚本"
<<COMMENT
  注:
   AUTHOR: ws, [e-mail]
   CREATED: 2019.11.06
   MYSQL版本：5.7.25
   CentOS Linux release 6.6
COMMENT
######################定义变量######################
SOFT_DIR=/opt/mysql
RUN_DIR=/var/run/mysql
GROUP_NAME=mysql
USER_NAME=mysql
PORT=3306
MYSQLDB_HOME=/opt/apps/mysql
MYSQLDB_DATA_HOME=$MYSQLDB_HOME/data
BINLOG_DIR=$MYSQLDB_DATA_HOME
TMP_DIR=$MYSQLDB_HOME/tmp
MYSQL_VERSION="mysql-5.7.25-linux-glibc2.12-x86_64"
CPU_NUMBERS=$(cat /proc/cpuinfo |grep "processor"|wc -l)
MYSQL_ID=`ifconfig eth0 | grep "inet addr" | awk -F. '{print $4}' | awk '{print $1}'`

# 获取服务器内存
COMPUTER_MEM=`free -m |grep "Mem"|awk '{print $2}'`
###################################################
  
#check if user is root
if [ $(id -u) != "0" ];then
   echo "Error: You must be root to run this script!"
   exit 1
fi
  
echo "========================================================================="
echo " install MySQL 5.7.25 on Redhat/CentOS Linux "
echo "========================================================================="
  
#addGroup
if [ -z $(cat /etc/group|awk -F: '{print $1}'| grep -w "$GROUP_NAME") ]
then
  groupadd  $GROUP_NAME
    if(( $? == 0 ))
      then
         echo "group $GROUP_NAME add sucessfully!"
    fi
else
  echo "$GROUP_NAME is exsits"
fi
  
#addUser
if [ -z $(cat /etc/passwd|awk -F: '{print $1}'| grep -w "$USE_NAME") ]
then
  adduser -g $GROUP_NAME $USER_NAME
     if (( $? == 0 ))
       then
       echo "user $USER_NAME add sucessfully!"
     fi
else
  echo "$USER_NAME is exsits"
fi
  
#downMySQL
# 判断安装介质目录是否创建
if [ -d $SOFT_DIR ];then
    echo "目录已创建"
    else
    mkdir -p $SOFT_DIR
fi
  
#删除centos系统自带的mariadb数据库防止发生冲突
rpm -qa|grep mariadb
rpm -e mariadb-libs --nodeps
  
# 安装libaio
yum -y install libaio
  
if [ -s /etc/my.cnf ]; then
        mv /etc/my.cnf /etc/my.cnf.`date +%Y%m%d%H%M%S`.bak
fi
  
echo "====================安装mysql5.7.25=========================="
  
# 创建mysql配置文件：
cat >>/etc/my.cnf<<EOF
[mysql]
# CLIENT #
port                           = $PORT 
socket                         = $RUN_DIR/mysql_$PORT.sock
no-auto-rehash
prompt                         = "\\u@\\h [\\d]>"
   
[mysqld]
# GENERAL #
server-id                      = $MYSQL_ID
user                           = mysql
default-storage-engine         = InnoDB
socket                         = $RUN_DIR/mysql_$PORT.sock
pid-file                       = $RUN_DIR/mysqld_$PORT.pid
port                           = $PORT
local-infile                   = on
bind-address                   = 0.0.0.0
character-set-server           = utf8mb4
collation-server               = utf8mb4_general_ci
performance_schema             = OFF
# MyISAM #
key-buffer-size                = 128M
# SAFETY #
max-allowed-packet             = 16M
max-connect-errors             = 1000000
skip-name-resolve
#sql_mode                       = NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,STRICT_ALL_TABLES,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO
sql-mode                       = NO_ENGINE_SUBSTITUTION
sysdate-is-now                 = 1
#innodb                         = FORCE
symbolic-links                 = 0
explicit_defaults_for_timestamp
# DATA STORAGE #
datadir                        = $MYSQLDB_DATA_HOME
tmpdir                         = $TMP_DIR
lc-messages-dir                = $MYSQLDB_HOME/share
   
# BINARY LOGGING #
expire-logs-days               = 7
sync-binlog                    = 1
log_bin                        = $BINLOG_DIR/mysql-bin
max_binlog_size                = 1G
binlog_format                  = ROW
binlog_row_image               = full
   
# REPLICATION #
read-only                      = 0
skip-slave-start               = 1
log-slave-updates              = 1
relay-log                      = $BINLOG_DIR/relay-bin
slave-net-timeout              = 60
sync-master-info               = 1000
sync-relay-log                 = 1000
sync-relay-log-info            = 1000
master-info-repository         = TABLE
relay-log-info-repository      = TABLE
relay_log_recovery             = ON
   
# CACHES AND LIMITS #
tmp-table-size                 = 64M
max-heap-table-size            = 128M
query-cache-type               = 0
query-cache-size               = 0
max-connections                = 4096
thread-cache-size              = 100
open-files-limit               = 65535
table-definition-cache         = 4096
table-open-cache               = 4096
join_buffer_size               = 16M
# INNODB #
innodb_data_file_path          = ibdata1:100M:autoextend
innodb-flush-method            = O_DIRECT
innodb-log-files-in-group      = 2
innodb-log-file-size           = 256M
innodb-flush-log-at-trx-commit = 1
innodb-file-per-table          = 1
innodb-buffer-pool-size        = 6G
innodb_buffer_pool_instances   = 4
innodb_buffer_pool_dump_pct    = 80
innodb_buffer_pool_dump_at_shutdown = 1  #该命令用于在关闭时把热数据dump到本地磁盘
innodb_buffer_pool_load_at_startup  = 1  #在启动时把热数据加载到内存
innodb_flush_log_at_trx_commit      = 1  #事务提交时把log buffer写入log file，并flush(刷到磁盘)，系统默认。最安全也是最慢的。mysqld/主机crash，binlog可能丢最多一个语句或一个事务。
innodb_flush_method            = O_DIRECT #避免双写缓冲的参数
innodb_lock_wait_timeout       = 60 # 锁等待超时时间 单位秒
innodb_status_output           = OFF #启用标准InnoDB监视器
query_cache_size               = 0 # 关闭查询缓存
query_cache_type               = 0 # 关闭查询缓存
   
# LOGGING #
log-error                      = $RUN_DIR/error_$PORT.log
log-queries-not-using-indexes  = 1
slow-query-log                 = 1
slow-query-log-file            = $RUN_DIR/slow-query_$PORT.log
long_query_time                = 1
log_timestamps                 = system
  
# 半同步复制参数
#rpl_semi_sync_master_enabled = 1
#rpl_semi_sync_master_timeout = 1000 # 单位秒
  
## MGR START ##
gtid-mode                      = on #全局事务id
enforce-gtid-consistency       = on #强制GTID的一致性
##master-info-repository        = TABLE #将master.info元数据保存在系统表中
##relay-log-info-repository     = TABLE #将relay.info元数据保存在系统表中
#binlog-checksum               = none #禁用二进制日志事件校验
##log-slave-updates             = on #级联复制
##log-bin=binlog#开启二进制日志记录
##binlog-format=ROW#以行的格式记录
 
#transaction-write-set-extraction=XXHASH64#使用哈希算法将其编码为散列
#loose-group_replication_group_name='ce9be252-2b71-11e6-b8f4-00212844f856'#加入的组名，可以修改，只要格式对
#loose-group_replication_start_on_boot=off#不自动启用组复制集群
#loose-group_replication_local_address='mgr1:33061'#以本机端口33061接受来自组中成员的传入连接
#loose-group_replication_group_seeds='mgr1:33061,mgr2:33062,mgr3:33063'#组中成员访问表
#loose-group_replication_bootstrap_group=off#不启用引导组
## MGR END ##
   
[mysqld_safe]
socket                         = $RUN_DIR/mysql_$PORT.sock
pid-file                       = $RUN_DIR/mysqld_$PORT.pid
nice                           = 0
[mysqldump]
quick
quote-names
max-allowed-packet             = 16M
socket                         = $RUN_DIR/mysql_$PORT.sock
  
EOF
  
# 判断mysql软件包是否存在
if [ -f $SOFT_DIR/${MYSQL_VERSION}.tar.gz ]
 then
  cd $SOFT_DIR
  tar -zxvf $SOFT_DIR/$MYSQL_VERSION.tar.gz
  rm -rf $MYSQLDB_HOME
  mv -Tf $SOFT_DIR/$MYSQL_VERSION $MYSQLDB_HOME
else
 echo "没有发现mysql二进制文件"
 echo "下载mysql二进制文件放到和本脚本在同一目录中"
 wget https://downloads.mysql.com/archives/get/p/23/file/${MYSQL_VERSION}.tar.gz -P $SOFT_DIR
    if(( $? == 0 ))
      then
       echo "MySQL DownLoad sucessfully!"
       cd $SOFT_DIR
       tar -zxvf $SOFT_DIR/$MYSQL_VERSION.tar.gz
       rm -rf $MYSQLDB_HOME
       mv -Tf $SOFT_DIR/$MYSQL_VERSION $MYSQLDB_HOME
     else
      echo "MySQL DownLoad failed!"
      exit $ERROR_EXIT
    fi
fi

# 设置mysql目录权限
if [ -d $MYSQLDB_DATA_HOME ];then
    echo "目录已存在"
    else
    mkdir -p $MYSQLDB_DATA_HOME
    chown -R mysql:mysql $MYSQLDB_DATA_HOME
    echo "目录和权限创建成功！"
fi

# 判断运行binlog目录是否创建
if [ -d $BINLOG_DIR ];then
    echo $BINLOG_DIR"目录已创建"
    else
    mkdir -p $BINLOG_DIR
fi

# 判断运行日志目录是否创建
if [ -d $RUN_DIR ];then
    echo "目录已创建"
    else
    mkdir -p $RUN_DIR
fi

# 设置tmp目录权限
if [ -d $TMP_DIR ];then
    echo "目录已存在"
    else
    mkdir -p $TMP_DIR
    chown -R mysql:mysql $TMP_DIR
    echo "tmp目录和权限创建成功！"
fi
  
# 目录授权
chown -R mysql:mysql $MYSQLDB_HOME
echo $RUN_DIR && chown -R mysql:mysql $RUN_DIR
chown -R mysql:mysql $BINLOG_DIR
  
# 配置开机启动
#function add_auto_start
#{
#   cp $MYSQLDB_HOME/support-files/mysql.server /etc/rc.d/init.d/mysqld
#   chmod +x /etc/rc.d/init.d/mysqld
#   chkconfig --add mysqld
#}
  
# 初始化数据库
cat /dev/null > $RUN_DIR/error_$PORT.log
echo $RUN_DIR && chown -R mysql:mysql $RUN_DIR
$MYSQLDB_HOME/bin/mysqld --initialize --user=mysql --basedir=$MYSQLDB_HOME/ --datadir=$MYSQLDB_DATA_HOME/ >> $TMP_DIR/mysqlpass.txt
  
# 设置环境变量
cat >> /etc/profile <<EOF
PATH=$MYSQLDB_HOME/bin:\$PATH
export PATH
EOF
  
source /etc/profile
  
#add_auto_start
  
echo "启动MySQL实例..."
#service mysqld start
$MYSQLDB_HOME/bin/mysqld_safe --defaults-file=/etc/my.cnf &
  
sleep 5
#########################################################################################
echo "mysql 5.7.25 安装完成，初始密码请查看$RUN_DIR/error_$PORT.log文件"：
INIT_PASSWD=`cat $RUN_DIR/error_$PORT.log  | grep password | awk '{print $NF}'`
  
echo "初始化root密码...$INIT_PASSWD"
mysql --connect-expired-password -e "alter user 'root'@'localhost' identified by 'mysql';flush privileges;" -p"$INIT_PASSWD"
  
echo "配置服务器本地免密登录..."
mysql_config_editor set -S $RUN_DIR/mysql_$PORT.sock -u root -p
mysql_config_editor print --all
  
echo "放开root用户客户端IP限制..."
mysql<<EOF
grant all privileges on *.* to 'root'@'%' identified by 'mysql' with grant option;
flush privileges;
quit
EOF
  
echo "DONE SUCCESSFULLY !"