Best Practices for templates and pushing changes to downstream jails

[jochen...@googlemail.com]

Hi,

let's assume I work with templates.There is something I want to improve in my template which I do. Install different packages, modify some files. Now let's also assume I already have 20+ jails originating from that template I would want to get the update, too. Is there a best practice for this?

Thank you

Jochen

[Brandon Schneider]

Hi Jochen,
Templates are more of a jumping off point for a jail. Just to bootstrap, they don’t have a living link beyond that. To do what you’re suggesting is better achieved by making a custom release and then creating base jails off of that. The jails will continue to inherit changes you make by doing things that way.

Creating a custom release isn’t too scary, if you fetch a RELEASE you can zfs clone that to whatever name you want and modify that to your hearts content. Or take a template jail you’ve customized and zfs send that under the iocage/releases dataset.

Hope that helps!

Brandon

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[jochen...@googlemail.com]

Can you please explain in a short manner how this works with basejails?

My assumption is like this:

- create jail and configure it to my likings

- convert it into a basejail

- create downstream jails from this basejail

Am Mittwoch, 30. Oktober 2019 16:39:35 UTC+1 schrieb Brandon Schneider:

Hi Jochen,
Templates are more of a jumping off point for a jail. Just to bootstrap, they don’t have a living link beyond that. To do what you’re suggesting is better achieved by making a custom release and then creating base jails off of that. The jails will continue to inherit changes you make by doing things that way.

Creating a custom release isn’t too scary, if you fetch a RELEASE you can zfs clone that to whatever name you want and modify that to your hearts content. Or take a template jail you’ve customized and zfs send that under the iocage/releases dataset.

Hope that helps!

Brandon

On 30 Oct 2019, at 10:30, jochen.demmer via iocage wrote:

Hi,

let's assume I work with templates.There is something I want to improve in my template which I do. Install different packages, modify some files. Now let's also assume I already have 20+ jails originating from that template I would want to get the update, too. Is there a best practice for this?

Thank you

Jochen

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