服务自动化管理脚本示例

1、编写业务逻辑代码

 cat nginx_auto.sh
. /etc/init.d/functions
function Status () {
    state=`systemctl status nginx|grep -w active | awk '{print $2}' | xargs`
    if [ "$state" == "active" ];then
        action "Nginx is Running Now." /bin/true
    else
        action "Nginx not running or has somes errors, Please try \"nginx -t\"" /bin/false
    fi

}
function Start () {

    systemctl start nginx
    if [ $? -eq 0 ];then
        action "Nginx is begining." /bin/true
    else
        action "Nginx can't be started. Please try \"nginx -t\"" /bin/false
    fi

}

function Stop () {
    systemctl stop nginx
    action "Nginx has been stopped." /bin/true
}

function Reload () {
    /usr/sbin/nginx -t
    if [ $? -ne 0 ];then
        action "Nginx has some error. Please try \"nginx -t\" to it." /bin/false
        exit
    fi
    systemctl reload nginx
    if [ $? -eq 0 ];then
        action "Nginx is reloaded successfully." /bin/true
    else
        action "Nginx failed to reload. Please check if Nginx is on." /bin/false
    fi
}

function Enable () {
    grep -w '^/usr/sbin/nginx$' /etc/rc.local > /dev/null
    if [ $? -ne 0 ];then
        echo "/usr/sbin/nginx" >> /etc/rc.local
        chmod +x /etc/rc.local
        action "Nginx is enabled successfully." /bin/true
    fi
}

function Disable () {
    sed -i 's#^/usr/sbin/nginx$##' /etc/rc.local
    action "Nginx is disabled successfully." /bin/true
}

function Exit() {
    read -p "是否确认退出?[Y/N]" key
    if ! [[ "$key" == "Y" || "$key" == "y" || "$key" == "N" || "$key" == "n" ]];then
        echo "您的输入有误，请重新选择！"
    fi
    if [[ "$key" = "Y" || "$key" = "y" ]];then
        echo "正在退出系统..."
        exit 0  # 正常退出，状态码为0
    elif [[ "$key" = "N" || "$key" = "n" ]];then
        continue   # 继续循环，回到上面的提示输入选项步骤
    fi
}

2、编写主函数代码

 cat nginx_main.sh
#!/bin/bash

# 导入nginx启停函数库
function main() {
. /root/test/nginx_auto.sh
echo "选择您要执行的操作"
select key in  "state" "start" "stop" "restart" "reload" "enable" "disable" "Exit"
do
case $key in
    state)
        Status
        ;;
    start)
        Start
        ;;
    stop)
        Stop
        ;;
    restart)
        Stop
        Start
        ;;
    reload)
        Reload
        ;;
    enable)
        Enable
        ;;
    disable)
        Disable
        ;;
     Exit)
        Exit
        ;;
        *)
        echo "Usage: $0 [start|stop|restart|reload|enable|disable|Exit]"
esac
done
}

main

3、效果