gierszerec

#!/bin/bash

# You can pick another server types, but at least 3 cores are needed
# for playback + recording to work fine with ffmpeg at 1080p. You
# mignt need more for OBS or recording something like MS Teams:
# - CX11, CPS11, CX21, CX31 drop frames consistently, don't.
# - CPX21 works fine for ClickMeeting + ffmpeg, some drops on MS Teams.
# - CPX31 does just about anything with ffmpeg and OBS.

SERVER_NAME=GierszeRec
SERVER_TYPE=cpx21
SERVER_LOCATION=nbg1
SERVER_SSH_KEY=$(hostname)

# Uses ~same amount of RAM as Debian 10
SERVER_IMAGE=ubuntu-20.04

# Hold some packages to speed up the host VM provisioning
# (Kernel/bootloader/etc need a reboot, we're not rebooting that VM anyways)
SERVER_APT_HOLD="linux-image-virtual grub-common grub-efi-amd64-bin grub-pc-bin"

DOCKER_IMAGE="dragoonaethis/gierszerec"
DOCKER_PUBLISH="127.0.0.1:5900:5900"

if [[ $(hcloud context active) == "" ]]; then
    echo "You don't have a hcloud context active - see hcloud docs for more info. If this"
    echo "is your first time using this script, remember to add your SSH key with its name"
    echo "set to your hostname to the Hetzner project you're using."
    exit 1
fi

case $1 in
up)
    hcloud server describe $SERVER_NAME >/dev/null
    if [[ $? -eq 0 ]]; then
        echo "Server already created, reusing..."
    else
        echo "Creating $SERVER_NAME..."
        hcloud server create --name $SERVER_NAME --type $SERVER_TYPE --image $SERVER_IMAGE --location $SERVER_LOCATION --ssh-key $SERVER_SSH_KEY
        if [[ $? -ne 0 ]]; then
            echo "Couldn't create a server, bailing out"
            exit 1
        fi

        # Looks about right for the cheaper ones...
        echo "Waiting 15s for the server to settle..."
        sleep 15
    fi

    # Server identity will change every time a server is recreated.
    # Hetzner tries to reuse the last IP address for the same
    # customer, so let's ignore known_hosts for now.
    IPADDR=$(hcloud server ip $SERVER_NAME)
    SSHCMD="ssh root@$IPADDR -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"

    $SSHCMD "docker" >/dev/null
    if [[ $? -ne 0 ]]; then
        echo "Performing first-time setup..."

        $SSHCMD "apt-mark hold $SERVER_APT_HOLD"
        $SSHCMD "apt update && apt upgrade -y"
        $SSHCMD "apt install -y docker.io jq"
        $SSHCMD "apt-mark unhold $SERVER_APT_HOLD"
    fi

    if [[ $($SSHCMD "docker ps --all --quiet --filter name=gierszerec") == "" ]]; then
        echo "Setting up the container for the first time..."
        $SSHCMD "docker pull $DOCKER_IMAGE"
        $SSHCMD "docker volume create rec"
    else
        echo "Killing the existing container and restarting..."
        $SSHCMD "docker rm --force gierszerec"
    fi

    $SSHCMD "docker run --name gierszerec --publish $DOCKER_PUBLISH --mount source=rec,target=/rec --detach $DOCKER_IMAGE"
    echo "Done, your server for today will be: $IPADDR"
    ;;

down)
    hcloud server delete $SERVER_NAME
    ;;

ssh)
    IPADDR=$(hcloud server ip $SERVER_NAME)
    if [[ $? -ne 0 ]]; then
        echo "Server appears down..."
        exit 1
    fi

    shift
    ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@$IPADDR -- $@
    ;;

vnc)
    IPADDR=$(hcloud server ip $SERVER_NAME)
    if [[ $? -ne 0 ]]; then
        echo "Server appears down..."
        exit 1
    fi

    TEMP_FILE="$(mktemp --suffix=.remmina)"
    cat <<EOF >$TEMP_FILE
[remmina]
ssh_tunnel_passphrase=
name=GierszeRec
ssh_tunnel_server=$IPADDR
password=
quality=9
colordepth=32
precommand=
ssh_tunnel_enabled=1
viewonly=0
ignore-tls-errors=1
disableserverinput=0
postcommand=
server=localhost
disablepasswordstoring=0
ssh_tunnel_username=root
disableclipboard=0
window_maximize=0
ssh_tunnel_password=
enable-autostart=0
showcursor=0
ssh_tunnel_auth=2
ssh_tunnel_loopback=0
proxy=
disableencryption=0
notes_text=
group=
window_width=1967
window_height=1110
keymap=
viewmode=1
ssh_tunnel_privatekey=
username=
protocol=VNC
EOF

    remmina "$TEMP_FILE"
    sleep 3
    rm $TEMP_FILE
    ;;

pull)
    RECDIR="./rec-$(date --iso-8601)"
    mkdir $RECDIR
    if [[ $? -ne 0 ]]; then
        echo "Could not create the local rec directory"
        exit 1
    fi

    IPADDR=$(hcloud server ip $SERVER_NAME)
    SSHCMD="ssh root@$IPADDR -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"
    RECVOL=$($SSHCMD "docker volume inspect rec | jq .[0].Mountpoint -r")
    scp -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -r root@$IPADDR:$RECVOL $RECDIR
    ;;

*)
    echo "Available commands: up, down, ssh, vnc, pull"
    exit 1
    ;;
esac