I am trying to create a custom ubuntu iso with

Question

I am trying to create a custom ubuntu iso with

some applications pre installed like docker, postgres etc.

The challenge I am facing is there are some docker images for .tar that I wanna load but I can't do that since docker isn't running on the chroot environment.

I was researching and I came across something called preseed script where I can apparently customize the installer and set default values

My doubt is for the docker images to load I need to have the docker daemon running, would making changes to the preseed actually work? I don't think the docker daemon would be running when the preseed script would run

0

07.11.2024

26 ответов

20 просмотров

Walter Автор вопроса

Sebastian
the Preseed sets values that would be asked in the...

How would I go about loading the docker images in boot? I could create a service but then it would run on boot every time.

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1 месяц назад

Sebastian Dicke

Walter
How would I go about loading the docker images in ...

Services can be disabled.

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1 месяц назад

Sebastian

Walter
How would I go about loading the docker images in ...

The livesystem is usually a tmpfs with the content of the squashfs/erofs. You also could install docker in the lifesystem.

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1 месяц назад

Walter Автор вопроса

Sebastian
The livesystem is usually a tmpfs with the content...

I installed the docker in the live system while in the chroot environment. I am facing the issue that I can't load the docker images from the tar file, since docker daemon could not run in the chroot

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1 месяц назад

Benoist

Walter
I installed the docker in the live system while in...

Can't you start the docker daemon within the chroot and then import images? I already did something like this iirc

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1 месяц назад

Walter Автор вопроса

Benoist
Can't you start the docker daemon within the chroo...

I can't start the docker daemon within the chroot env Something related to NAT error permission. Will post the exact error next time when I boot

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1 месяц назад

Benoist

Walter
I can't start the docker daemon within the chroot ...

In the meantime I found the script I used, I started the docker daemon with dockerd --iptables=false & maybe because of the same NAT thing, I don't remember

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1 месяц назад

Martin Rys

What you might actually want is a configuration management tool like Ansible that will set up an existing base install for you

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1 месяц назад

klimi

Martin Rys
What you might actually want is a configuration ma...

It is a little bit off the topic but do you have any recommendations how to speed up the install process using ansible? I manage over 100 computers and when doing fresh installs (ubuntu cloud-init) with ansible it takes ton of time to download all the packages, install them etc.

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1 месяц назад

Martin Rys

klimi
It is a little bit off the topic but do you have a...

Faster internet helps with download, faster IO with install times

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1 месяц назад

Benoist

klimi
It is a little bit off the topic but do you have a...

Also you can use mitogen to speed it up a bit

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1 месяц назад

Walter Автор вопроса

Benoist
In the meantime I found the script I used, I start...

Thanks will try this.

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1 месяц назад

klimi

Martin Rys
Faster internet helps with download, faster IO wit...

The thing is i can't pull more than 3 gigs because the router will be overloaded... but i think this is the main problem, the installing packages, next steps are quick

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1 месяц назад

Martin Rys

klimi
The thing is i can't pull more than 3 gigs because...

Replace router xD

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1 месяц назад

klimi

Martin Rys
Replace router xD

that's on the agenda for many years now... yeah...

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1 месяц назад

Walter Автор вопроса

Martin Rys
What you might actually want is a configuration ma...

I had no idea, will look into this, thanks. The thing is I need to load some custom docker container which runs the backend of an application that is installed in the image so was going for this route

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1 месяц назад

Martin Rys

Walter
I had no idea, will look into this, thanks. The th...

Why don't you put the front end in docker too?

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1 месяц назад

Walter Автор вопроса

Martin Rys
Why don't you put the front end in docker too?

I can do that but either way I need to load docker container either after Ubuntu is installed and loaded or pre load the docker conatiners while creating the ISO. Can't decide which one would be better

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1 месяц назад

Martin Rys

Walter
I can do that but either way I need to load docker...

The former, Ansible has a Docker module.

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1 месяц назад

klimi

Benoist
Also you can use mitogen to speed it up a bit

this looks very interesting for our routine runs, thanks!

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1 месяц назад