#!/bin/bash
定义变量
mysql_download_url=https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.33-linux-glibc2.12-x86_64.tar.xz
mysql_package_name=mysql-8.0.33-linux-glibc2.12-x86_64.tar.xz
mysql_dec_name=mysql-8.0.33-linux-glibc2.12-x86_64
mysql_download_dir="/usr/local/src"
mysql_base_dir="/usr/local/mysql"
mysql_data_dir="/data/mysql"
mysql_root_password=!@#123QAz
ck_ok()
{
if [ $? -ne 0 ]
then
echo "$1 error."
exit 1
fi
}
dependon_install()
{
if which yum >/dev/null 2>&1
then
for pkg in "$@"
do
if ! rpm -q ${pkg} >/dev/null 2>&1
then
sudo yum install -y ${pkg}
else
echo "${pkg}已安装"
fi
done
fi
if which apt >/dev/mull 2>&1
then
for pkg in "$@"
do
if ! dpkg -l ${pkg} >/dev/null 2>&1
then
sudo apt install -y ${pkg}
else
echo "${pkg}已安装"
fi
done
fi
}
download_mysql()
{
cd ${mysql_download_dir}
if [ -f ${mysql_package_name} ]
then
echo "当前目录已经存在mysql安装包"
echo "检测MD5"
file_md5=`md5sum ${mysql_package_name} | awk '{print $1}'`
if [ ${file_md5} == '0bb9fd978d8b122d7846efc37884c0bb' ]
then
return 0
else
echo "file ${mysql_package_name} check failed"
/bin/mv -f ${mysql_package_name} ${mysql_package_name}.old
fi
fi
dependon_install wget
ck_ok "wget安装"
sudo wget ${mysql_download_url}
ck_ok "下载mysql"
}
install_mysql()
{
cd /usr/local
if [ -d ${mysql_base_dir} ]
then
echo "${mysql_base_dir}已存在，移走"
sudo /bin/mv -f ${mysql_base_dir} ${mysql_base_dir}.old
fi
sudo tar Jxf {mysql_download_dir}/{mysql_package_name}
ck_ok "解压mysql压缩包"
sudo /bin/mv -f ${mysql_dec_name} mysql
if id mysql &>/dev/null
then
echo "系统已经创建了mysql用户，跳过创建"
else
echo "创建mysql用户"
sudo useradd -s /sbin/nologin mysql
fi
ck_ok "创建mysql用户"
if [ -d ${mysql_data_dir} ]
then
echo "${mysql_data_dir}已存在，移走"
sudo /bin/mv -f ${mysql_data_dir} ${mysql_data_dir}.old
fi
echo "创建MySQL data_dir"
sudo mkdir -p ${mysql_data_dir}
sudo chown -R mysql ${mysql_data_dir}
if [ -f ${mysql_base_dir}/my.cnf ]
then
echo "MySQL配置文件已存在，移走"
sudo /bin/mv -f ${mysql_base_dir}/my.cnf ${mysql_base_dir}/my.cnf.old
fi
echo "创建MySQL配置文件my.cnf"
cat > /tmp/my.cnf <<EOF
[mysqld]
user = mysql
port = 3306
server_id = 1
basedir = ${mysql_base_dir}
datadir = ${mysql_data_dir}
socket = /tmp/mysql.sock
pid-file= ${mysql_data_dir}/mysqld.pid
log-error = ${mysql_data_dir}/mysql.err
EOF
sudo /bin/mv /tmp/my.cnf ${mysql_base_dir}/my.cnf
dependon_install ncurses-compat-libs libaio-devel
sudo {mysql_base_dir}/bin/mysqld --console --datadir={mysql_data_dir} --initialize-insecure --user=mysql
ck_ok "初始化"
if [ -f /usr/lib/systemd/system/mysqld.service ]
then
echo "mysql服务启动脚本已存在，移走"
sudo /bin/mv -f /usr/lib/systemd/system/mysqld.service /usr/lib/systemd/system/mysqld.service.old
fi
echo "创建mysql服务启动脚本"
cat > /tmp/mysqld.service <<EOF
[Unit]
Description=MySQL server
After=network.target
[Install]
WantedBy=multi-user.target
[Service]
Type=forking
TimeoutSec=0
PermissionsStartOnly=true
ExecStart={mysql_base_dir}/bin/mysqld --defaults-file={mysql_base_dir}/my.cnf --daemonize $OPTIONS
ExecReload=/bin/kill -HUP -$MAINPID
ExecStop=/bin/kill -QUIT $MAINPID
KillMode=process
LimitNOFILE=65535
Restart=on-failure
RestartSec=10
RestartPreventExitStatus=1
PrivateTmp=false
EOF
sudo /bin/mv /tmp/mysqld.service /usr/lib/systemd/system/mysqld.service
sudo systemctl unmask mysqld
sudo systemctl daemon-reload
sudo systemctl enable mysqld
sudo systemctl start mysqld
ck_ok "启动mysql"
{mysql_base_dir}/bin/mysqladmin -S/tmp/mysql.sock -uroot password "{mysql_root_password}"
ck_ok "设置mysql密码"
unlink /usr/bin/mysql &>/dev/null
ln -s /usr/local/mysql/bin/mysql /usr/bin
}
main()
{
download_mysql
install_mysql
}
main