Ubuntu安装mysql压缩包备查

#!/usr/bin/env bash

#parameter definition
a=$(uname -a)
curdir=$( cd $(dirname $0) pwd )
curuser=$USER
mysqltarfile=$(ls -l | grep tar.xz | awk '{print $9}')
log=$curdir/mysql_install.log

# 解压MYSQL安装包
function deCompression() {
    
  echo '==========解压MYSQL安装包=========='
  pushd $curdir
  tar -Jxvf $mysqltarfile -C /usr/local/
  mv /usr/local/mysql-8.0.29-linux-glibc2.17-x86_64-minimal /usr/local/mysql
  if [ $? -ne 0 ]; then
    echo 'MySQL decompression failed!!!'
    exit
  else
    echo '===================================='
    echo 'MySQL decompression success!'
  fi
  popd
}

# 创建MYSQL⽤户和⽤户组
function createMysqlGroup() {
    
  echo '==========创建MYSQL⽤户和⽤户组=========='
  groupadd mysql
  useradd -g mysql mysql
  # mkdir /usr/local/mysql/data
  chown -R mysql:mysql /usr/local/mysql
  echo '===================================='
  echo 'mysql group created success!'
}

# MYSQL的配置⽂件,可修改datadir
function mycnf() {
    
  cat >/etc/my.cnf <<EOF [mysql] default-character-set=UTF8MB4 socket=/var/lib/mysql/mysql.sock [mysqld] skip-name-resolve port = 3306 socket=/var/lib/mysql/mysql.sock basedir=/usr/local/mysql datadir=/usr/local/mysql/data max_connections=200 character-set-server=UTF8MB4 default-storage-engine=INNODB lower_case_table_names=1 max_allowed_packet=32M EOF
  if [ $? -ne 0 ]; then
    echo 'Failed to write the my.cnf configuration file!!!'
    exit
  else
    echo '===================================='
    echo 'my.cnf configuration success!'
    echo '===================================='
  fi
  if ! test -d "/usr/local/mysql/data"; then
    mkdir -p /usr/local/mysql/data
  fi
  # 创建 /var/lib/mysql ⽬录，并修改权限
  mkdir /var/lib/mysql
  chmod 777 /var/lib/mysql
}

#安装 MYSQL
function mysql_install() {
    
  dpkg -i $curdir/libaio1_0.3.110-5_amd64.deb > /dev/null
  dpkg -i $curdir/libaio-dev_0.3.110-5_amd64.deb > /dev/null
  pushd /usr/local/mysql
  ./bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data 2>&1 | tee $log
  # 获取 root 初始密码
  InitialPassword=$(tail -1 $log | awk '{print $NF}')

  # 复制启动脚本到资源⽬录，并修改 basedir 和 datadir 为对应⽬录
  cp ./support-files/mysql.server /etc/init.d/mysqld
  sed -i '46s/basedir=/basedir=\/usr\/local\/mysql/g' /etc/init.d/mysqld
  sed -i '47s/datadir=/datadir=\/usr\/local\/mysql\/data/g' /etc/init.d/mysqld
  if [ $? -ne 0 ]; then
    echo 'Failed to replace /etc/init.d/mysqld!!!'
    exit
  else
    echo '===================================='
    echo '/etc/init.d/mysqld success!'
    echo '===================================='
  fi
  popd

  # 设置MYSQL系统服务并开启⾃启
  chmod +x /etc/init.d/mysqld

  # 启动MYSQLD
  /etc/init.d/mysqld restart

  # 检查 MySQL 服务是否启动成功
  netstat -ntlp | grep 3306
  if [ $? -ne 0 ]; then
    echo 'MySQL Boot failure!!!'
    exit
  else
    echo '===================================='
    echo 'start MySQL success!'
  fi


  # 登陆MYSQL，并执行 SQL 语句
  #use mysql;
  #update user set user.Host='%' where user.User='root';
  /usr/local/mysql/bin/mysql -uroot -p"$InitialPassword" --connect-expired-password <<EOF alter user user() identified by "123456789"; flush privileges; exit EOF

  if [ $? -ne 0 ]; then
    echo 'fail to perform MySQL operation!!!'
    exit
  else
    echo '===================================='
    echo 'All operations were successful!!!'
    echo '===================================='
  fi
}

function main() {
    
  deCompression
  createMysqlGroup
  mycnf
  mysql_install
}

main