show IP and prompt to open minecraft console after install

the IP address was getting burried in logs when printed after
machine creation.

README.md

@@ -1,15 +1,16 @@
 ## ever wanted to:
-- play minecraft but the server was too expensive to host 
+- play minecraft but the server was too expensive to host for just a 
-for just a little play session?
+little play session?
 - have a minecraft world you wanted to play with your friends as a 
 one off thing?
 
 ## introducing: auto-mc-redux! 
 
-this is a modified version of the [script](https://git.skeh.site/ida/auto-mc) i maintain for automatically 
+this is a modified version of the 
-installing minecraft (on `apt` based distrobutions) and intigrating it 
+[script](https://git.skeh.site/ida/auto-mc) i maintain for 
-with systemd. this aims to create a virtual machine, create the 
+automatically installing minecraft (on `apt` based distrobutions) 
-appropriate firewall rules, and install minecraft with a world that's 
+and intigrating it with systemd. this aims to create a virtual 
-kept in an s3 bucket, until you give it the command to un-deploy it, 
+machine, create the appropriate firewall rules, and install 
-where it'll back up the world to the s3 bucket, and then unprovision the 
+minecraft with a world that's kept in an s3 bucket, until you give 
-server!
+it the command to un-deploy it, where it'll back up the world to the 
+s3 bucket or your local computer, and then unprovision the server!

automate.sh

@@ -23,7 +23,7 @@ fi
 
 echo "preparing..." # making sure things have the right owners
 adduser --disabled-password --gecos "" mc
-mkdir -p /srv/minecraft/{server,backups}
+mkdir -p /srv/minecraft/server
 cat <<- 'EOF' > /etc/systemd/system/mc-server.service
 	[Unit]
 	Description=Minecraft server
@@ -42,23 +42,35 @@ cat <<- 'EOF' > /etc/systemd/system/mc-server.service
 EOF
 chown root:root /etc/systemd/system/mc-server.service
 mkdir -p /root/.local/bin/
-echo "PATH=/root/.local/bin/:$PATH" >> /root/.bashrc #FIXME: needs to me made impodent
+echo 'PATH="/root/.local/bin:$PATH"' > /root/.bashrc
 
 cat <<- 'EOF' > /root/.local/bin/mc-backup
 	#!/usr/bin/env bash
-	tar -caf /srv/minecraft/backups/server.tar.xz /srv/minecraft/server/
+	systemctl stop mc-server
+	tar -c -f - /srv/minecraft/server/ | zstd
 EOF
 
+touch /root/.hushlogin
 chown root:root /root/.local/bin/mc-backup
 chmod 755 /root/.local/bin/mc-backup
 
+if [ -e /server.tar.zstd ]; then
+	echo 'unpacking server backup...'
+	tar -C / --zstd --overwrite -x -f /server.tar.zstd
+fi
+
 # find the latest release of the requested version and download it
 echo "downloading minecraft $VERSION..."
 RELEASE=`curl -s https://api.papermc.io/v2/projects/paper/versions/$VERSION/ | jq -r .builds[-1]`
 curl https://api.papermc.io/v2/projects/paper/versions/$VERSION/builds/$RELEASE/downloads/paper-$VERSION-$RELEASE.jar -o /srv/minecraft/server/paperclip.jar
 
-chown -R mc:mc /srv/minecraft/
+mkdir /home/mc/.ssh
-su mc -c 'echo "eula=true" > /srv/minecraft/server/eula.txt'
+cp /root/.ssh/authorized_keys /home/mc/.ssh/authorized_keys
+chown -R mc:mc {/srv/minecraft/,/home/mc/.ssh/authorized_keys}
+su mc -c \
+	'echo "screen -r" >> /home/mc/.bashrc
+	echo "exit" >> /home/mc/.bashrc
+	echo "eula=true" > /srv/minecraft/server/eula.txt'
 
 # what they say on the tin
 echo "loading units..."
@@ -71,4 +83,4 @@ echo "starting units..."
 systemctl start mc-server.service
 
 # yeah wow hope that worked lol
-echo "done! you can now delete this directory"
+echo "done!"

deploy.sh

@@ -20,14 +20,26 @@ fi
 
 versionprompt
 echo -n "Waiting for machine to respond"
-# send pings every second, waiting for 1 second
+# tests if ssh is up, waiting one second between attempts
-until ping -w 1 -c 1 $ipv4_address >/dev/null 2>&1; do
+until nc $ipv4_address 22 <<<'' 2> /dev/null | grep -q 'SSH'; do
 	echo -n '.'
 	sleep 1
 done
 echo
 
+data_dir get
+
+if [ -f "$data_dir/server.tar.zstd" ]; then
+	echo "Uploading server backup..."
+	scp "$data_dir/server.tar.zstd" root@$ipv4_address:/server.tar.zstd
+fi
+
 echo "Now installing!"
 ssh root@$ipv4_address < <(cat <(echo VERSION=$version) ./automate.sh)
 
-#machine destroy
+echo "Minecraft server started at IP: $ipv4_address"
+echo "Would you like to enter the server console?"
+
+if yes; then
+	exec ssh mc@$ipv4_address
+fi

functions.sh

@@ -1,6 +1,31 @@
 # required for the complex pipes
 shopt -s lastpipe
 
+data_dir() {
+	local command="$1"; shift
+
+	case $command in
+		get)
+			if [ -d "${XDG_DATA_HOME}/auto-mc-redux" ]; then
+			  data_dir="${XDG_DATA_HOME}/auto-mc-redux"
+			elif [ -d "$HOME/.local/share/auto-mc-redux" ]; then
+			  data_dir="${HOME}/.local/share/auto-mc-redux"
+			else
+				data_dir create
+			fi
+		;;
+		create)
+		  if [ -z ${XDG_DATA_HOME+x} ]; then
+		    mkdir -p "${HOME}/.local/share/auto-mc-redux"
+		    data_dir="${HOME}/.local/share/auto-mc-redux"
+		  else
+		    mkdir -p "${XDG_DATA_HOME}/auto-mc-redux"
+		    data_dir="${XDG_DATA_HOME}/auto-mc-redux"
+		  fi
+		;;
+	esac
+}
+
 config() {
 	local command="$1"; shift
 
@@ -184,7 +209,6 @@ machine(){
 
 	case $command in
 		create)
-			# read isn't used in these pipelines because of job control shinanigans
 			echo 'Creating Droplet...'
 			curl -s -X POST \
 					-H 'Content-Type: application/json' \
@@ -195,10 +219,7 @@ machine(){
 			        "image":"ubuntu-24-10-x64",
 			        "ssh_keys":["'$fingerprint'"],
 			        "tags":["auto-mc"]}' \
-			    "https://api.digitalocean.com/v2/droplets" |\
+			    "https://api.digitalocean.com/v2/droplets" > /dev/null
-					jq .droplet.id | read droplet
-
-			export droplet
 			echo 'Waiting for droplet to be active...'
 			while sleep 5; do
 					machine show status
@@ -220,15 +241,15 @@ machine(){
 					curl -s -X GET \
 						-H "Content-Type: application/json" \
 						-H "Authorization: Bearer $TOKEN" \
-						"https://api.digitalocean.com/v2/droplets/$droplet" |\
+						"https://api.digitalocean.com/v2/droplets?tag_name=auto-mc" |\
-						jq '.droplet.networks.v4[] | select(.type == "public")'
+						jq '.droplets[].networks.v4[] | select(.type == "public")'
 				;;
 				status)
 					curl -s -X GET \
 						-H "Content-Type: application/json" \
 						-H "Authorization: Bearer $TOKEN" \
-						"https://api.digitalocean.com/v2/droplets/$droplet" |\
+						"https://api.digitalocean.com/v2/droplets?tag_name=auto-mc" |\
-						jq -r .droplet.status | read status
+						jq -r .droplets[].status | read status
 					export status
 				;;
 			esac
@@ -262,3 +283,19 @@ versionprompt() {
 		echo "Defaulting to $latest..."
 	fi
 }
+
+yes() {
+	while :; do
+		read -p '(Y/n): '
+		case $REPLY in
+			[Yy]*)
+				return 0
+			;;
+			[Yy]*)
+				return 1
+			;;
+			*)
+				echo "Please select 'Y' for yes or 'N' for no: "
+		esac
+	done
+}

undeploy.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+install_dir="$(dirname "$(readlink -f "$0")")" # find the install directory
+source "$install_dir/functions.sh"
+
+data_dir get
+machine show ipv4 | jq -r .ip_address | read ipv4_address
+ssh root@$ipv4_address <<<mc-backup > "$data_dir/server.tar.zstd"
+machine destroy