Shell scripts automatically deploy NIGNX reverse proxies and Web servers, shared storage

#!/bin/bash

Systemctl Status Nginxvar=$?if[$var-eq4 ]     Then        Yum InstallEpel-release-yif[$?-ne0 ]             Then                Echo "Epel Library installation failed, no nginx source available"        Else            Yum InstallNginx-yif[$?-eq0 ]                 Thensystemctl start Nginxif[$?-eq0 ]                     Then Echo "nginx start OK"                Else                    Echo "nginx Start fail"                fi            Else                Echo "nginx Install fail"            fi        fielif[$var-eq3 ]     Thensystemctl start Nginxif[$?-eq0 ]         Then            Echo "nginx start OK"    Else        Echo "nginx Start fail"    fielif[$var-eq0 ]    Then        Echo "Nginx is OK"Else    Echo        "Nginx can ' t be installed"fiEcho "Modifying a configuration file"grep 'Upstream'/etc/nginx/nginx.confif(($? !=0))     Then    sed-ri'/^http/a upstream Pythonweb {'/etc/nginx/nginx.confsed-ri'/^upst/a server 192.168.211.136 weight=3\;'/etc/nginx/nginx.confsed-ri'/^server 192.168.211.136/a server 192.168.211.137\;'/etc/nginx/nginx.confsed-ri'/^server 192.168.211.137/a server 192.168.211.138\;'/etc/nginx/nginx.confsed-ri'/^server 192.168.211.138/a \}'/etc/nginx/nginx.confsed-ri'/^ (\ +) (location) (\) (\)//Proxy_pass http:\/\/pythonweb\;'/etc/nginx/nginx.conffiEcho "configuration file modified successfully"Echo "Reload Nginx"Systemctl Reload Nginxif(($?==0))     Then    Echo "HTTP Load balancer is ok!"Else    Echo "sorry!!"fiSystemctl Status NFS-servervar1=$?if(($var 1==4))     Then    Yum InstallRpcbind Nfs-utils-yif(($?==0))         Thensystemctl start Rpcbind NFS-Serverif(($?==0))             Then            Echo "congratulations!! NFS Start ok!!"        Else            Echo "Sorry is Fail!!!"        fi    Else        Echo"Sorry install is FAIL!!!"    fielif(($var 1==3))     Then    Echo "Nfs-server not executed"systemctl start Rpcbind NFS-Serverif(($?==0))         Then        Echo "congratulations!! NFS Start OK!!!"    Else        Echo "sorry!!"    fielif(($var 1==0))     Then    Echo "Okokok!!!"Else    Echo "I am SO sorry"fiEcho "Modifying a configuration file"Test-D/Shareif[ $? !=0 ]    Then       mkdir/Sharechmod-R777/SharefiEcho "/share 192.168.16.0/24 (rw,sync,fsid=0)">/etc/exportsEcho "configuration file modified successfully"Echo "Reload Nfs-server"Systemctl Reload NFS-Serverif(($?==0))     Then        Echo "NFS service is ok!"Else    Echo "sorry!!"fi

Shell scripts automatically deploy NIGNX reverse proxies and Web servers, shared storage