AlpineLinux: Icingaweb2 webserver config script

icinga2-web-conf

#!/bin/sh
#
#
# Script for automatic webserver setup for Icingaweb2, designed for Alpine Linux (https://www.alpinelinux.org)
# (c) 2017 Francesco Colista 
# Email: fcolista@alpinelinux.org
#

icingaweb2_path="/usr/share/webapps/icingaweb2/public"
icingaweb2conf_path="/etc/icingaweb2"

configure_icinga2() {
	local web=$1
	local conf=$2
	echo -e "\n ==> Configuring $web web server .... \n"
	case $web in
		apache*)
			icingacli setup config webserver apache --document-root $icingaweb2_path > $conf
			sed -i -e "s/^#.*rewrite_module/LoadModule rewrite_module/" /etc/apache2/httpd.conf
			rc-service apache2 status || rc-service apache2 restart
			;;
		nginx*)
			read -p "Warning: this setup disable the default.conf in nginx and autoconfigure php-fpm with ngixn user. Should I continue? [Y/N]" yn
			case $yn in
				[Yy]*) mv /etc/nginx/conf.d/default.conf /etc/nginx/conf.d/default.conf.disabled
				sed -i -e "s/user.*/user\ =\ nginx/g" /etc/php5/php-fpm.conf
				sed -i -e "s/group.*/group\ =\ icingaweb2/g" /etc/php5/php-fpm.conf
				;;
				[Nn]*) echo -e "\nYou should fix manually $conf file in order to let nginx start without issues\n" ;;
			esac
			cat>$conf<<EOF
server {
	listen 80;
	
	location ~ ^/icingaweb2/index\.php(.*)\$ {
		fastcgi_pass 127.0.0.1:9000;
		fastcgi_index index.php;
		include fastcgi_params;
		fastcgi_param SCRIPT_FILENAME $icingaweb2_path/index.php;
		fastcgi_param ICINGAWEB_CONFIGDIR /$icingaweb2conf_path;
		fastcgi_param REMOTE_USER \$remote_user;
	}

	location ~ ^/icingaweb2(.+)? {
		alias /usr/share/webapps/icingaweb2/public;
		index index.php;
	try_files \$1 \$uri \$uri/ /icingaweb2/index.php\$is_args\$args;
	}

}
EOF
			rc-service php-fpm status || rc-service php-fpm start
			rc-service nginx status || rc-service nginx start

			;;

		lighttpd*)
			local modules="alias setenv rewrite"
			local lighttpd_conf="/etc/lighttpd/lighttpd.conf"
			sed -i -e "s/^#.*mod_fastcgi.conf/include \"mod_fastcgi.conf/g" $lighttpd_conf
			for m in $modules; do
				echo "Fixing lighttpd.conf with module $m"
				sed -i -e "1,/^#.*mod_$m./s/^#.*mod_$m./\     \"mod_$m\"/" $lighttpd_conf
			done
			grep -q $conf $lighttpd_conf || echo -e "\ninclude \"$conf\"\n" >> $lighttpd_conf

			cat>$conf<<EOF
alias.url += ( "/icingaweb2" => "$icingaweb2_path/" )

\$HTTP["url"] =~ "^/icingaweb2" {
	server.document-root = "$icingaweb2_path"
	setenv.add-environment = ("ICINGAWEB_CONFIGDIR" => "$icingaweb2conf_path")
	server.follow-symlink = "enable"
	}

	url.rewrite = ( "^/icingaweb2/(img|font)/(.*)?" => "\$0",
			"^/icingaweb2/(.*)(\?(.*)=(.*))" => "/icingaweb2/index.php?\$3=\$4",
			"^/icingaweb2/(.*)?" => "/icingaweb2/index.php/" )
EOF
		;;
	esac
}


check() {
	apk info -q -e icingaweb2 
	if [ $? -ne "0" ]; then
		echo -e "\nIcingaweb2 is not installed. Install it first, then re-run the script.\n"; 
		exit 1
	fi
}

# Main starts here

check
while true; do
	echo 
	read -p " ==> Which webserver do you want to use? [A]pache, [N]ginx or [Lighttpd] ? " c
	
	case $c in
		[Aa]*) 
			apk info -e apache2 || apk add apache2
			apk info -e php5-apache2 || apk add php5-apache2
			webserver="apache"
			conffile="/etc/apache2/conf.d/icingaweb2.conf"
			break
			;;
		[Nn]*) 
			apk info -e php5-fpm || apk add php5-fpm
			apk info -e nginx || apk add nginx
			webserver="nginx"
			conffile="/etc/nginx/conf.d/icingaweb2.conf"
			break
			;;
		[Ll]*)
			apk info -e php5-cgi || apk add php5-cgi
			apk info -e lighttpd || apk add lighttpd
			webserver="lighttpd"
			conffile="/etc/lighttpd/icingaweb2.conf"
			break
			;;
		*) 	echo -e "\n ==> Please choose [A]pache, [N]ginx or [L]ighttpd : " 
			;;
	esac
done

adduser $webserver icingaweb2
# Add the web server user to the icingacmd group in order to grant it write permissions to the external command pipe and livestatus socket:
adduser $webserver icingacmd

chown $webserver:icingaweb2 -R $icingaweb2_path/*
chown $webserver:icingaweb2 -R $icingaweb2conf_path/*
chmod 755 -R $icingaweb2_path/*

configure_icinga2 $webserver $conffile

icingacli setup token create && icingacli setup token show

echo " ==> Open your browser to your webserver pointing to the path: /icingaweb2 "
echo " ==> Paste the previously generated token and follow the steps on-screen."