# WALinuxAgent fails to start after update to latest version 2.7.3.0-1\_ol001.el8

**URL:** <https://support.procomputers.com/t/walinuxagent-fails-to-start-after-update-to-latest-version-2-7-3-0-1-ol001-el8/16>\
**Category:** Azure\
**Created:** [November 6, 2022, 5:25pm UTC](https://support.procomputers.com/t/walinuxagent-fails-to-start-after-update-to-latest-version-2-7-3-0-1-ol001-el8/16 "2022-11-06T17:25:41Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![procomputers](https://dub1.discourse-cdn.com/flex017/user_avatar/support.procomputers.com/procomputers/32/19_2.png) [@procomputers](https://support.procomputers.com/u/procomputers)\
**Post date:** [November 6, 2022, 5:25pm UTC](https://support.procomputers.com/t/walinuxagent-fails-to-start-after-update-to-latest-version-2-7-3-0-1-ol001-el8/16/1 "2022-11-06T17:25:41Z")

</div>

**Affected Products:**

- Red Hat Enterprise Linux (RHEL) 8 images built before 2022-10-04
- AlmaLinux 8 images built before 2022-10-04
- Rocky Linux 8 images built before 2022-10-04
- CentOS Stream 8 images built before 2022-10-04
- CentOS 8 images built before 2022-10-04

To find out the image built timestamp, please read [this](https://support.procomputers.com/t/how-to-find-the-linux-image-version-from-command-line/21) article.

**Opened:** 2022-11-04

**Severity:** [Severity 4 (Low)](https://support.procomputers.com/t/procomputers-support-severity-levels-definition/23)

**Symptoms:**

Version `2.7.3.0-1_ol001.el8` of the WALinuxAgent software package is now available on the OpenLogic [repository](http://olcentgbl.trafficmanager.net/openlogic/8/openlogic/x86_64/RPMS/).

In all Azure images built before 2022-10-04, ProComputers is using the `openlogic` repo as instructed in step 6 of [this](https://learn.microsoft.com/en-us/azure/virtual-machines/linux/create-upload-centos#centos-70) Microsoft article.

After updating WALinuxAgent package to the latest available version `2.7.3.0-1_ol001.el8` hosted on the `openlogic` repo, the `waagent` service does not start correctly anymore, and throws the following errors in the logs:

> [azureuser@test ~]$ **sudo journalctl -b | grep waagent**  
> […]  
> Nov 04 20:59:34 test systemd[1882]: waagent.service: Failed to execute command: No such file or directory  
> Nov 04 20:59:34 test systemd[1882]: waagent.service: Failed at step EXEC spawning **/usr/bin/python: No such file or directory**  
> […]

> [azureuser@test ~]$ **sudo systemctl status waagent**  
> ● waagent.service - Azure Linux Agent  
> Loaded: loaded (/usr/lib/systemd/system/waagent.service; enabled; vendor preset: disabled)  
> Drop-In: /usr/lib/systemd/system/waagent.service.d  
> └─12-CPUQuota.conf  
> Active: **activating (auto-restart)**\* (Result: exit-code) since Mon 2022-11-07 21:00:52 UTC; 4s ago  
> Process: 1938 ExecStart= **/usr/bin/python** -u /usr/sbin/waagent -daemon (code=exited, status=203/EXEC)  
> Main PID: 1938 (code=exited, status=203/EXEC)  
> CPU: 1ms  
> […]

**Solution:**

The reason for this issue is that the WALinuxAgent package version `2.7.3.0-1_ol001.el8` as built by OpenLogic is using the `/usr/bin/python` binary, which does not exist by default in an RHEL 8 environment (and all binary compatible operating systems like AlmaLinux and Rocky Linux) . Previous version of the OpenLogic built WALinuxAgent package used the `/usr/bin/python3.6` binary.

> [azureuser@test ~]$ **ls -la /usr/bin/python** \*  
> lrwxrwxrwx. 1 root root 9 Feb 10 2022 /usr/bin/python2 → python2.7  
> -rwxr-xr-x. 1 root root 8024 Feb 10 2022 /usr/bin/python2.7  
> lrwxrwxrwx. 1 root root 25 May 17 11:18 /usr/bin/python3 → /etc/alternatives/python3  
> lrwxrwxrwx. 1 root root 31 Aug 11 2021 /usr/bin/python3.6 → /usr/libexec/platform-python3.6  
> lrwxrwxrwx. 1 root root 32 Aug 11 2021 /usr/bin/python3.6m → /usr/libexec/platform-python3.6m

We could use the `alternatives` command and create an `/usr/bin/python` binary, however our preferred solution is to _reconfigure_ the WALinuxAgent to use the correct `/usr/bin/python3.6` binary, as below:

1. Create the `/etc/systemd/system/waagent.service.d` folder:

> [azureuser@test ~]$ **sudo mkdir -p /etc/systemd/system/waagent.service.d**

1. Using `sudo` and your favorite editor, create the `/etc/systemd/system/waagent.service.d/local.conf` file with the following content:

> [Service]  
> ExecStart=  
> ExecStart=/usr/bin/python3.6 -u /usr/sbin/waagent -daemon

NOTE: we have to explicitly clear `ExecStart` before setting it again, as it is an additive setting.

1. Reload the systemd manager configuration and restart the `waagent` service:

> [azureuser@test ~]$ **sudo systemctl daemon-reload**  
> [azureuser@test ~]$  
> [azureuser@test ~]$ **sudo systemctl stop waagent**  
> [azureuser@test ~]$  
> [azureuser@test ~]$ **sudo systemctl start waagent**  
> [azureuser@test ~]$  
> [azureuser@test ~]$ **sudo systemctl status waagent**  
> ● waagent.service - Azure Linux Agent  
> Loaded: loaded (/usr/lib/systemd/system/waagent.service; enabled; vendor preset: disabled)  
> Drop-In: /usr/lib/systemd/system/waagent.service.d  
> └─12-CPUQuota.conf  
> **/etc/systemd/system/waagent.service.d**  
> └─ **local.conf**  
> Active: **active (running)** since Mon 2022-11-07 21:37:41 UTC; 6s ago  
> Main PID: 3431 (python3.6)  
> Tasks: 7 (limit: 100875)  
> Memory: 32.1M  
> CPU: 1.549s  
> CGroup: /azure.slice/waagent.service  
> ├─3431 **/usr/bin/python3.6** -u /usr/sbin/waagent -daemon  
> └─3443 **/usr/bin/python3.6** -u bin/WALinuxAgent-2.8.0.11-py2.7.egg -run-exthandlers  
> […]

If you still face the same issue, please contact ProComputers Support as instructed in [this](https://support.procomputers.com/t/start-here-welcome-to-procomputers-support/7) article.

**References:**

- [http://olcentgbl.trafficmanager.net/openlogic/8/openlogic/x86\_64/RPMS/](http://olcentgbl.trafficmanager.net/openlogic/8/openlogic/x86_64/RPMS/)
- [https://learn.microsoft.com/en-us/azure/virtual-machines/linux/create-upload-centos#centos-70](https://learn.microsoft.com/en-us/azure/virtual-machines/linux/create-upload-centos#centos-70)
