Azure cloud-init：挂在模块最后阶段

Question

I'm experiencing some issues with Azure cloud-init on Ubuntu 20.04 and am looking for some guidance on the next steps for troubleshooting.

At the moment, I'm just using a test cloud-init file, testing installing my required packages. This is the cloud-init file. The custom apt configuration is in there because of waagent was locking the process (ref. Azure cloud-init: Failed to install packages ):

#cloud-config

apt:
  conf: |
    Acquire::Retries "60";
    DPkg::Lock::Timeout "60";

package_update: true

# Install packages required for NetBox
packages:
  - python3
  - python3-pip
  - python3-venv
  - python3-dev
  - build-essential
  - libxml2-dev
  - libxslt1-dev
  - libffi-dev
  - libpq-dev
  - libssl-dev
  - zlib1g-dev
  - nginx

When I create the Azure VM with this configuration I get no errors, but in checking the job status 'modules-final' is always in the 'running' state and never seems to complete.

azureuser@cloud-init-test:~$ cat /var/lib/cloud/data/status.json 
{
 "v1": {
  "datasource": "DataSourceAzure [seed=/dev/sr0]",
  "init": {
   "errors": [],
   "finished": 1671618221.4859056,
   "start": 1671618217.8323092
  },
  "init-local": {
   "errors": [],
   "finished": 1671618215.7414432,
   "start": 1671618214.2585633
  },
  "modules-config": {
   "errors": [],
   "finished": 1671618332.374849,
   "start": 1671618275.386914
  },
  "modules-final": {
   "errors": [],
   "finished": null,
   "start": 1671618332.9963179
  },
  "modules-init": {
   "errors": [],
   "finished": null,
   "start": null
  },
  "stage": "modules-final"
 }
}

If I re-run the process manually (ref. How to re-run cloud-init without reboot ), then I get the following:

azureuser@cloud-init-test:~$ sudo cloud-init modules --mode=final
Cloud-init v. 22.4.2-0ubuntu0~20.04.2 running 'modules:final' at Wed, 21 Dec 2022 11:42:19 +0000. Up 665.68 seconds.
Ign:1 http://security.ubuntu.com/ubuntu focal-security InRelease
Ign:2 http://archive.ubuntu.com/ubuntu focal InRelease
...

(I had to chop the list of URLs to avoid having the question flag as spam:)). This list just scrolls seemingly without timeout. I'm not familiar with what this means, but it seems like the URLs are where packages are held so I get the feeling that it's trying to run the package installs but failing and retrying?

Does anyone have any insight into how I can proceed to troubleshoot?

Thanks!

Answer 1

I tried to reproduce the same in my environment and got below results:

Try to ping the URLs to check whether you are able to do so like belowTry to Sudo ping 8.8.8.8 inside your distro (Ubuntu). If you cannot reach.network, search for.network related issues in wsl.

If.network is reachable, it's either DNS problem or host being blocked by your.network.

To check DNS, try Sudo ping archive.ubuntu.com.

Step 1: sudo  systemctl restart systemd-resolved.service  
Step 2: sudo cloud-init modules --mode=final  

Execute the commands below if above steps doesn't give you required output

sudo  systemctl unmask systemd-resolved.service  
sudo  systemctl enable systemd-resolved.service  
sudo  systemctl start systemd-resolved.service