How can i roll back the update using this module?

Hi Lucas, So if you have installed it in standalone mode, and assuming you have not committed it yet, you can rollback the artifact by running mender -rollback. But if you were using managed mode, the the install/commit was done automatically and the rollback is only performed if there are errors …

I performed an update for testing and used the command with sudo permissions. I got this: [image] So, regardless of anything happening, I tried to upload a new artifact again and now I have the following error: [image] I’m running the pre-build client.

Can you please copy the error log in text? I cannot read the full log from an image.

I performed the authentication procedure again and went back to working normally. I sent a new artifact, the folder appeared in my home directory but when I run the -rollback command I get this: sudo mender -rollback INFO[0000] Loaded configuration file: /etc/mender/mender.conf module=config INF…

Still not clear to me what are you trying to achieve. Are you running mender in managed mode or in standalone mode? If you are running in managed mode you cannot manually perform a rollback. The rollback mechanism will be handled automatically by mender if the installation fails.

Thanks for the reply, I am running from a locally hosted server. I believe it is managed mode. I now understand that mender automatically handles rollback with this directory module. But what I mean is if there is an error in an application because of the update and not in the installation of the a…

I recommend you have a look at this tutorial on Update Modules, to better understand the rollback mechanism: https://docs.mender.io/2.1/devices/update-modules The logs are sent to the server, you should be able to find them in the finished deployment.

@bonini_lucas I would also recommend looking into a pre-commit state script that will allow you to plugin your own post-install checks. It’s basically a shell script that you provide that Mender will call and if you detect an error condition, you return the value 1 and the managed mode update will …

@lluiscampos @drewmoseley Thanks so much for the support. I will read these documents. But, is there somewhere where I can find script examples of these cases?

We have some example state scripts that simply return “OK” to show how they can be added to a Yocto build here: https://github.com/mendersoftware/meta-mender/tree/master/meta-mender-demo/recipes-mender/example-state-scripts/files You can do something similar only having appropriate checks and retur…

Issues with rollback using Directory Update Module

General Discussions

kacf September 26, 2019, 6:14am 14

Earlier there are these errors also, during ArtifactInstall. Maybe the backup is never created?

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Issues with rollback using Directory Update Module

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