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Linux 下简便的方法来查找服务状态、健康检查和服务器资源利用率等等。
注：适用于单体架构。
通过使用这种方法，我们可以使用单个工具检查服务器的健康状态、服务状态和服务器详细信息。只需更改脚本以添加其他服务或使用相同的模板即可。此外，通过设置定时任务，我们可以在出现问题时收到通知。
让我们开始吧！
编写脚本
$ vim linuxmi
#! /bin/bash#color notesNC="\033[0m"GREEN="\033[0;32m"RED="\033[0;31m"YELLOW="\033[0;33m"cyan="\033[0;36m"yellow="\033[0;33m"#Sectioning .........echo -e "${YELLOW}---------------------------------------------------------------------------------------------------------------${NC}"echo "Server details:"echo -e "${YELLOW}---------------------------------------------------------------------------------------------------------------${NC}"#fetching basic specs from the server(user,ip,os)user=`whoami`echo -e "${cyan}User:${NC} $user"hostname=`hostname`echo -e "${cyan}hostname:${NC} $hostname"ip=`hostname -I`echo -e "${cyan}IP address:${NC} $ip"os=`cat /etc/os-release | grep "NAME\|VERSION" | grep -v "VERSION_ID" | grep -v "PRETTY_NAME" | grep NAME`echo -e "${cyan}OS:${NC} $os"#Sectioning.....echo -e "${YELLOW}---------------------------------------------------------------------------------------------------------------${NC}"echo "Service status:"echo -e "${YELLOW}---------------------------------------------------------------------------------------------------------------${NC}"sleep 1#checking tomcat statusecho -e "${yellow}1) Tomcat${NC}"#grepping tomcat status from ps auxpp=`ps aux | grep tomcat | grep "[D]java.util"`if [[ $pp =~ "-Xms512M" ]];then echo -e " Status: ${GREEN}UP${NC}"else echo -e " Status: ${RED}DOWN${NC}"fiecho ""#function to check apache is running or not!function apache(){echo -e "${yellow}2) Apache-httpd${NC}"#grepping apache status from ps auxhttpd=`ps aux | grep httpd | grep apache`if [[ $httpd =~ "apache" ]];then echo -e " Status: ${GREEN}UP${NC}"else echo -e " Status: ${RED}DOWN${NC}"fi}#function to check elastic is running or notfunction elastic(){echo -e "${yellow}3) Elasticsearch${NC}"#grepping elasticsearch status from ps auxelastic=`ps aux | grep elasticsearch`if [[ $elastic =~ "elastic+" ]];then echo -e " Status: ${GREEN}UP${NC}"else echo -e " Status: ${RED}DOWN${NC}"fi#function to check mysql is running or not}function mysql(){echo -e "${yellow}4) Mysql${NC}"#grepping mysql status from ps auxmysql=`ps aux | grep mysqld`if [[ $mysql =~ "mysqld" ]];then echo -e " Status: ${GREEN}UP${NC}"else echo -e " Status: ${RED}DOWN${NC}"fi}function docker(){echo -e "${yellow}5) Docker${NC}"#grepping docker status from ps auxdocker=`systemctl status docker | grep dead`if [[ $docker =~ "dead" ]];then echo -e " Status: ${GREEN}UP${NC}"else echo -e " Status: ${RED}DOWN${NC}"fi}#calling functionsapacheecho ""elasticecho ""mysqlecho ""dockerecho ""#Sectioning............#Fetching mem and cpu informationsecho -e "${YELLOW}---------------------------------------------------------------------------------------------------------------${NC}"echo "Memory Details:"echo -e "${YELLOW}---------------------------------------------------------------------------------------------------------------${NC}"sleep 1#view mem infofree -h#get uptime detailsuptime=$(uptime | awk "{print $3,$4}" | cut -f1 -d,)echo -e "${cyan}System Uptime:${NC} :$uptime"#Fetching the load averageloadaverage=$(top -n 1 -b | grep "load average:" | awk "{print $10 $11 $12}")echo -e "${cyan}Load average:${NC}: $loadaverage"echo -e "${cyan}The top 10 services with high resource usage are listed below.${NC}"#Get top services with high resource utilizationps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head#sectioning...........#Fetching server space details!echo -e "${YELLOW}---------------------------------------------------------------------------------------------------------------${NC}"echo "Server space Details:"echo -e "${YELLOW}---------------------------------------------------------------------------------------------------------------${NC}"#View disk space detailsdf -hecho "----------------------------------------------------------------------------------------------------------------"2、我们可以将该脚本转换为全局命令，将文件移动到 sbin 目录，并赋予执行权限。
linuxmi@linuxmi ~/www.linuxmi.com % sudo cp linuxmi /usr/sbin/ [sudo] linuxmi 的密码：linuxmi@linuxmi ~/www.linuxmi.com % sudo chmod +x /usr/sbin/linuxmilinuxmi@linuxmi ~/www.linuxmi.com3、现在您可以在 shell 的任何位置调用该脚本。
linuxmi@linuxmi ~/www.linuxmi.com % linuxmi示例输出如下：
优势
只需一个命令就可以轻松访问完整的服务器信息，并且还可以在出现问题时安排警报通知。
编辑脚本并添加服务非常简单。
显示有关正在运行的进程、磁盘空间、宕机时间、内存详细信息、高进程列表等的详细信息。
感谢 Linux迷www.linuxmi.com的精彩分享。
需要Linux 精美艺术壁纸的朋友请加小编微信linuxgs（口令壁纸）。
来自：Linux迷链接：https://www.linuxmi.com/linux-health-check-tool-using-bash-script.html
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