feat: allow users to select components to install when using linux script (#3528)

Provide a choice to select the components to install. The script
should be able to just install chatwoot alone. Postgres, redis,
SSL certs via letsencrypt and nginx as a webserver should be
installed after confirmation.

Fixes: #3513

deployment/setup_20.04.sh

@@ -2,7 +2,7 @@
 
 # Description: Chatwoot installation script
 # OS: Ubuntu 20.04 LTS / Ubuntu 20.10
-# Script Version: 0.6
+# Script Version: 0.7
 # Run this script as root
 
 read -p 'Would you like to configure a domain and SSL for Chatwoot?(yes or no): ' configure_webserver
@@ -19,6 +19,13 @@ exit 1
 fi
 fi
 
+read -p 'Would you like to install postgres and redis?(Answer no if you plan to use external services): ' install_pg_redis
+
+if [ $install_pg_redis == "no" ]
+then
+echo "***** Skipping pg and redis installation. ****"
+fi
+
 apt update && apt upgrade -y
 apt install -y curl
 curl -sL https://deb.nodesource.com/setup_12.x | bash -
@@ -29,10 +36,20 @@ apt update
 apt install -y \
     git software-properties-common imagemagick libpq-dev \
     libxml2-dev libxslt1-dev file g++ gcc autoconf build-essential \
-    libssl-dev libyaml-dev libreadline-dev gnupg2 nginx redis-server \
-    redis-tools postgresql postgresql-contrib certbot \
-    python3-certbot-nginx nodejs yarn patch ruby-dev zlib1g-dev liblzma-dev \
-    libgmp-dev libncurses5-dev libffi-dev libgdbm6 libgdbm-dev nginx-full
+    libssl-dev libyaml-dev libreadline-dev gnupg2 \
+    postgresql-client redis-tools \
+    nodejs yarn patch ruby-dev zlib1g-dev liblzma-dev \
+    libgmp-dev libncurses5-dev libffi-dev libgdbm6 libgdbm-dev
+
+if [ $install_pg_redis != "no" ]
+then
+apt install -y postgresql postgresql-contrib redis-server
+fi
+
+if [ $configure_webserver == "yes" ]
+then
+apt install -y nginx nginx-full certbot python3-certbot-nginx
+fi
 
 adduser --disabled-login --gecos "" chatwoot
 
@@ -41,6 +58,8 @@ gpg2 --keyserver hkp://keyserver.ubuntu.com --recv-keys 409B6B1796C275462A170311
 curl -sSL https://get.rvm.io | bash -s stable
 adduser chatwoot rvm
 
+if [ $install_pg_redis != "no" ]
+then
 pg_pass=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 15 ; echo '')
 sudo -i -u postgres psql << EOF
 \set pass `echo $pg_pass`
@@ -57,6 +76,7 @@ EOF
 
 systemctl enable redis-server.service
 systemctl enable postgresql
+fi
 
 secret=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 63 ; echo '')
 RAILS_ENV=production
@@ -86,11 +106,18 @@ sed -i -e "/POSTGRES_PASSWORD/ s/=.*/=$pg_pass/" .env
 sed -i -e '/RAILS_ENV/ s/=.*/=$RAILS_ENV/' .env
 echo -en "\nINSTALLATION_ENV=linux_script" >> ".env"
 
-RAILS_ENV=production bundle exec rake db:create
-RAILS_ENV=production bundle exec rake db:reset
 rake assets:precompile RAILS_ENV=production
 EOF
 
+if [ $install_pg_redis != "no" ]
+then
+sudo -i -u chatwoot << EOF
+cd chatwoot
+RAILS_ENV=production bundle exec rake db:create
+RAILS_ENV=production bundle exec rake db:reset
+EOF
+fi
+
 cp /home/chatwoot/chatwoot/deployment/chatwoot-web.1.service /etc/systemd/system/chatwoot-web.1.service
 cp /home/chatwoot/chatwoot/deployment/chatwoot-worker.1.service /etc/systemd/system/chatwoot-worker.1.service
 cp /home/chatwoot/chatwoot/deployment/chatwoot.target /etc/systemd/system/chatwoot.target
@@ -98,13 +125,16 @@ cp /home/chatwoot/chatwoot/deployment/chatwoot.target /etc/systemd/system/chatwo
 systemctl enable chatwoot.target
 systemctl start chatwoot.target
 
+public_ip=$(curl http://checkip.amazonaws.com -s)
+
 if [ $configure_webserver != "yes" ]
 then
+echo -en "\n\n***************************************************************************\n"
 echo "Woot! Woot!! Chatwoot server installation is complete"
-echo "The server will be accessible at http://<server-ip>:3000"
+echo "The server will be accessible at http://$public_ip:3000"
 echo "To configure a domain and SSL certificate, follow the guide at https://www.chatwoot.com/docs/deployment/deploy-chatwoot-in-linux-vm"
+echo "***************************************************************************"
 else
-
 curl https://ssl-config.mozilla.org/ffdhe4096.txt >> /etc/ssl/dhparam
 wget https://raw.githubusercontent.com/chatwoot/chatwoot/develop/deployment/nginx_chatwoot.conf
 cp nginx_chatwoot.conf /etc/nginx/sites-available/nginx_chatwoot.conf
@@ -117,6 +147,17 @@ cd chatwoot
 sed -i "s/http:\/\/0.0.0.0:3000/https:\/\/$domain_name/g" .env
 EOF
 systemctl restart chatwoot.target
+echo -en "\n\n***************************************************************************\n"
 echo "Woot! Woot!! Chatwoot server installation is complete"
 echo "The server will be accessible at https://$domain_name"
+echo "***************************************************************************"
+fi
+
+
+if [ $install_pg_redis == "no" ]
+then
+echo -en "\n\n***************************************************************************\n"
+echo "DB migrations are not run as pg and redis is not installed."
+echo "After modifying .env with your external db creds, run db migrations !!!"
+echo "***************************************************************************"
 fi