1.编写脚本自动部署反向代理、web、nfs；
I、部署nginx反向代理两个web服务，调度算法使用加权轮询
II、所有web服务使用共享存储nfs，保证所有web都对其有读写权限，保证数据一致性；
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | proxy 192.168.11.62 #nginx代理，nfs服务端 web01 192.168. 11.74 #web01,nfs客户端 web02 192.168.11.75 #web02,nfs客户端 #poxy上安装nginx代理，nfs客户端，脚本如下 [root@proxy mnt]# cat install_nginx.sh #!/bin/bash #insatll nginx proxy IP=`ifconfig | awk -F " " '/inet/{print $2}' | head -1` #insyall nginx proxy function install_nginx() { yum remove nginx -y yum install nginx -y touch /etc/nginx/conf.d/proxy.conf cat > /etc/nginx/conf.d/proxy.conf <<EOF upstream web { server 192.168.11.74; server 192.168.11.75; } server { listen 80; server_name $IP; location / { proxy_pass http: //web; } } EOF systemctl start nginx } #install nfs server function install_nfs_server() { yum install rpcbind nfs-utils -y [ -d /share ] || mkdir /share && chmod o+w /share echo "/share 192.168.11.62/24(rw,sync,fsid=0)" > /etc/exports systemctl start rpcbind.service systemctl start nfs-server.service } while : do read -p "please choice your install server{nginx|nfs}: " server if [ $server = "nginx" ] then install_nginx elif [ $server = "nfs" ] then install_nfs_server else exit fi done #web01安装nginx web 和nfs客户端 [root@web01 mnt]# cat install_nginx.sh #!/bin/bash #insatll nginx proxy IP=`ifconfig | awk -F " " '/inet/{print $2}' | head -1` #insyall nginx proxy function install_nginx() { yum install nginx -y echo "welcome to web01" >/usr/share/nginx/html/index.html systemctl start nginx } #install nfs server function install_nfs_server() { yum install rpcbind nfs-utils -y systemctl start rpcbind.service systemctl start nfs-server.service mount -t nfs 192.168.11.62:/share /usr/share/nginx/html/ } while : do read -p "please choice your install server{nginx|nfs}: " server if [ $server = "nginx" ] then install_nginx elif [ $server = "nfs" ] then install_nfs_server else exit fi done |
2.编写监控脚本，监控集群内所有服务存活状态，内存、磁盘剩余率检测，异常则发送报警邮件
步骤一：准备发送邮件的工具
步骤二：将上述文件内容拷贝到/usr/bin/mail并chmod+x /usr/bin/mail
步骤三：然后新建监控脚本servermonitor.sh
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | #!/bin/sh function ngxMonitor(){ #监控nginx服务 ps aux | grep nginx| grep -v grep &>/dev/ null if [ $? -ne 0 ];then msg="TIME:$(date +%F_%T) HOSTNAME:$(hostname) IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}' ) MSG:Nginx program is crash, Waiting to restart" echo $msg /usr/bin/my_mail $msg systemctl restart nginx fi } function nfsMonitor(){ #监控nfs服务 ps aux | grep nfs| grep -v grep &>/dev/ null if [ $? -ne 0 ];then msg="TIME:$(date +%F_%T) HOSTNAME:$(hostname) IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}' ) MSG:NFS program is crash, Waiting to restart" echo $msg /usr/bin/my_mail $msg systemctl restart nginx fi } function memMonitor(){ #监控内存 mem_use=`free | awk 'NR==2{print $3}' ` mem_total=`free | awk 'NR==2{print $2}' ` mem_per=`echo "scale=2;$mem_use/$mem_total" |bc -l |cut -d . -f2` if [ ! -e /usr/bin/bc ];then yum install bc -y -q echo "bc install successful" fi if (( $mem_per > 10 )); then msg="TIME:$(date +%F_%T) HOSTNAME:$(hostname) IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}' ) MSG:Memory usage exceeds the limit,current value is ${mem_per}%" echo $msg /usr/bin/my_mail $msg fi } function diskMonitor(){ #监控磁盘 space_use=`df $disk |awk 'NR==2{print $5}' |cut -d% -f1` if [ $space_use -gt 80 ];then msg="TIME:$(date +%F_%T) HOSTNAME:$(hostname) IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}' ) MSG:Disk space usage exceeds the limit,current value is ${space_use}%" echo $msg /usr/bin/my_mail $msg fi } ngxMonitor &>>/tmp/monitor.log nfsMonitor &>>/tmp/monitor.log memMonitor &>>/tmp/monitor.log diskMonitor &>>/tmp/monitor.log |
步骤四：计划任务
| 1 | * * * * * /shell/sysCheck.sh |