Issues with Raspberry Pi 0 WiFi Raspbian

nishad1092 · September 17, 2020, 10:46am

Hi,

I just want to know how do I include\use a custom\different mender client version when I custom build the RPi image.

drewmoseley · September 17, 2020, 2:14pm

Hi @nishad1092 at the moment that’s not easily done. It’s all integrated into mender-convert. When new Mender releases are done then mender-convert is updated with the latest Mender client version.

Do you have a need to change it differently?

Drew

nishad1092 · September 17, 2020, 3:06pm

Hi @drewmoseley

Oh !!
Yes, Actually I needed a very important change, so I have rebuilt the mender-client according to my use case. Now I want this mender-client to be used while building using mender-convert.

So far, I have used the normal installation of mender-client using the variable parameters, but as u said earlier, for a stable and rigid system update I was looking at this article, but this looks like an issue for me to build with the default client.

It would be great if I can build image with my custom mender-client, Actually the change is extremly simple, just a line is altered in the custom client I need.

nishad1092 · September 18, 2020, 4:05am

Hi @drewmoseley

So I just have one small change here in this file

github.com

mendersoftware/mender/blob/master/support/mender-device-identity

#!/bin/sh

# Example script called by Mender client to collect device identity data. The
# script needs to be located at
# $(datadir)/mender/identity/mender-device-identity path for the agent to find
# it. The script shall exit with non-0 status on errors. In this case the agent
# will discard any output the script may have produced.
#
# The script shall output identity data in <key>=<value> format, one
# entry per line. Example
#
# $ ./mender-device-identity
# mac=de:ad:ca:fe:00:01
# cpuid=1112233
#
# The example script collects the MAC address of a network interface with the
# type ARPHRD_ETHER and it will pick the interface with the lowest ifindex
# number if there are multiple interfaces with that type. The identity data is
# output in the following format:
#

This file has been truncated. show original

So, It will be great to have this edit before building.

the change I need is in line 60, replace that line to —
echo “hostname=$(cat /etc/hostname)”

drewmoseley · September 18, 2020, 1:45pm

Please submit this as a pull request against https://github.com/mendersoftware/mender-convert

Drew

nishad1092 · September 18, 2020, 2:39pm

Hi @drewmoseley

So Do I need to create a pull request through this link?

What should I mention in the write section and it will be a pull request under ‘2.2.x’, Is that right?

drewmoseley · September 18, 2020, 3:53pm

I don’t think we are accepting changes to 2.2.x so it should go against master.

nishad1092 · September 20, 2020, 4:54pm

ok. so create a pull request at master@{1day}…master
is it? @drewmoseley and Ill mention what changes I required?

nishad1092 · September 21, 2020, 12:11pm

Hi @drewmoseley

I have created a pull request to the master, please could you check once if its okay.

nishad1092 · September 23, 2020, 5:40pm

Hi @drewmoseley

I just wanted to make this clear, because I don’t think I mentioned that this file mender-device-identity which Im modifying is from this Mender-Client file https://d1b0l86ne08fsf.cloudfront.net/2.4.0/dist-packages/debian/armhf/mender-client_2.4.0-1_armhf.deb,

I was thinking the branch file which is responsible for this change is under https://github.com/mendersoftware/mender/blob/master/support/mender-device-identity
this link,

So, I need to create pull request to this repo isn’t it?

Please correct me if Im wrong.

drewmoseley · September 23, 2020, 6:03pm

If all you are modifying is mender-device-identity, then you only need a PR if it’s a general change that should be applied to the default provided by the links you referenced. If it’s specific to your use case then you can just provide your own version of the file in your integration setup whether that is using mender-convert or yocto.

nishad1092 · September 24, 2020, 4:04am

Hi @drewmoseley

I thought of the taking the mender-convert repo and making changes to my own version as required to this file Mender-device-identity, because that’s the only change I need for my Mender-Client before it installs, But then the Mender-Convert repo I couldn’t find this file nor couldn’t find the source were it binds this file.
I can see this file only in this line https://github.com/mendersoftware/mender/blob/master/support/mender-device-identity

But while doing custom RPi Pi 0 built its mentioned Mender-convert link.
This is my confusion here @drewmoseley, If you can guide me where this Mender-device-identity file is inside mender-convert, then I’ll make my changes and then start building, else I have to do a PR for the master branch of the link you provided.

drewmoseley · September 24, 2020, 5:03pm

mender-convert initially pulls the default /usr/share/mender/identity/mender-device-identity from the Mender sources as you have noticed. But then it applies your root filesystem overlay so if you have one in there with the full path embedded (and made executable) then your local one will override the default.

nishad1092 · September 26, 2020, 9:12am

Hi @drewmoseley,

Okay, I understood little bit, I went thru https://docs.mender.io/system-updates-debian-family/convert-a-mender-debian-image/customization#rootfs-overlays
And according to this, I should place the mender-device-identity inside here before building is it?

Or like you mentioned above, mender-convert pulls the default /usr/share/mender/identity/mender-device-identity from the Mender sources, if you could tell me where is that pulling script/ is mentioned, I can modify it there itself, it will easier rgt, to change the source to my own local source or my repository source,

drewmoseley · September 28, 2020, 3:51pm

Mender-convert installs mender as a prebuilt binary using the deb package and does not build it from source. You are best off using the rootfs overlay here.

Drew

nishad1092 · September 29, 2020, 5:07am

Sure @drewmoseley, I’m trying it now, I shall update you,
Thanks so much for your support

nishad1092 · September 29, 2020, 7:10am

Hi @drewmoseley

I was trying to build it, and I’m facing this issue while building :::

Applying rootfs overlay: /home/mender/custom_image/mender-convert/rootfs_overlay_demo
rsync: change_dir “/home/mender/custom_image/mender-convert/rootfs_overlay_demo” failed: No such file or directory (2)
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1207) [sender=3.1.3]

All files and folders have the user permission as default.

And for the Mender-device-identity, I have placed the file structure of /usr/share/ inside rootfs_overlay_Demo

FYI file structure, I have followed the guide as it is:

drewmoseley · September 29, 2020, 2:08pm

The error here indicates that /home/mender/custom_image/mender-convert/rootfs_overlay_demo does not exist or is not visible from within the docker container running the build. If you can provide a full log of your conversion process, starting with the creation of the rootfs_overlay_demo, building of the container, and invocation of mender-convert that may tell us something.

Also, please copy any paste text rather than providing screenshots. It’s much easier if we can search and copy text in our discussions.

Drew

nishad1092 · September 30, 2020, 4:19am

Sure @drewmoseley I’ll make sure it will be copied as text from next time. I actually could compile it by just giving ```
–overlay rootfs_overlay , instead of --overlay ${PWD}/rootfs_overlay but pretty strange because PWD points to my current directory and rootfs_overlay exist,
Anyways, I have build the image, going to test it now.

Thanks for your huge support.

nishad1092 · September 30, 2020, 11:03am

Hi @drewmoseley

I have build and flashed the Image to theSD card, and booted also to my RPi zeroW.
It booted fine, got hit to the mender server also.
But when checking the free space in the RPI, I can see only 334 MB left (But my sd card is 16GB) , I saw different partition filesystem while checking the sd card, I understand it has different partitions,

But If I’m seeing only 334 MB,

What happnd to there rest of the space since its a 16GB card ?
2.Does it mean, I can only use this much from this point on my sd card? If so, Does it mean, I need a bigger SD card(32 gb ??)

FYI: Sorry I couldn’t type, its the screenshot frm the RPi:

Topic		Replies	Views
Custom Mender Identiy with mender-convert General Discussions	3	691	September 6, 2019
Best way to setup Mender on multiple devices General Discussions raspberry-pi-4	9	1365	December 10, 2020
Mender convert image does not connect to hosted.mender.io General Discussions raspberry-pi-zero-wifi , authentication , raspberry-pi-os	9	745	December 4, 2020
What's the recommended mechanism for installing a custom mender-device-identity script in Yocto? General Discussions	8	3212	June 17, 2019
New iteration of the mender-convert tool General Discussions	9	1958	December 12, 2019

Issues with Raspberry Pi 0 WiFi Raspbian

Related topics