Unable to connect to SSH or serial console

[leafionash]

I was following this guide https://www.youtube.com/watch?v=UYLA_fFdciA up until 8:41 where they rebooted the ssh and now I cannot access the SSH or serial console at all. The serial port 1 logs says 

M [K[     *] Job systemd-networkd-wait-online.se…tart running (5min 12s / no limit)

These are my firewall rules

allow-ingress-from-iap

Ingress

Apply to all

IP ranges: 35.235.240.0/20

tcp:22, 3389

Allow

1000

default

Off

–

–

minecraft-rule

Ingress

minecraft-server

IP ranges: 0.0.0.0/0

tcp:25565

Allow

1000

default

Off

–

–

nomachine

Ingress

nomachine

IP ranges: 0.0.0.0/0

tcp:4000

Allow

1000

default

Off

–

–

default-allow-icmp

Ingress

Apply to all

IP ranges: 0.0.0.0/0

icmp

Allow

65534

default

Off

–

–

default-allow-internal

Ingress

Apply to all

IP ranges: 10.128.0.0/9

tcp:0-65535 udp:0-65535 icmp

Allow

65534

default

Off

–

–

default-allow-rdp

Ingress

Apply to all

IP ranges: 0.0.0.0/0

tcp:3389

Allow

65534

default

Off

–

–

default-allow-ssh

Ingress

Apply to all

IP ranges: 0.0.0.0/0

tcp:22

Allow

65534

default

Off

–

–

Please help!

[DamianS]

Hello @leafionash  ,Welcome on Google Cloud Community.

I'm assuming that you've did all steps for systemd, in terms of serial port, right ? https://cloud.google.com/compute/docs/troubleshooting/troubleshooting-using-serial-console#gcloud_2 
Apart from serial console. I went trough entire YT video. What I've did additionally was two commands:

As root:
apt update
apt upgrade
shutdown -r now
Force your shutdown by "STOP" button. Then try boot it again. Might be possible, that during update, something went wrong. BTW, which distro version are you using? Ubuntu 20 LTS ?

IF this does not gonna work, I would suggest to create new VM ( of course if your "nomachine" VM was empty ). Grab documentation https://cloud.google.com/compute/docs/instances/create-start-instance.
In fact, you should :
1. Create VM
2. Update VM
3. Upgrade VM
4. Reboot
5. Create FW rule with port TCP:4000 for tag OR all instances 
6. IF tag rule, then assign this tag into VM.
7. Install nomachine by following this YT tutorial. 
I've used for testing Ubuntu 20 LTS with 30 GB of disk. 
--
cheers,
Damian Sztankowski
LinkedIn medium.com Cloudskillsboost Sessionize Youtube