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doc/packaging_apps_final_boss.md
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Packing Applications : Advanced

Here come the time:

Here are few ideas that will help you.

There are things that slow you down:

  • Installing your freshly done package because of dependencies installation or npm/rust/elixir/composer builds
  • Waiting a package_check to see the level of your package
  • etc...

The idea is to use YunoHost stuff to help you improve this lost time.

Building your infrastructure

First idea is to build several VMs or LXCs with YunoHost to let you parallelize actions, like having the first one installing an apps, the second installing another apps, the third one debugging an apps upgrade, etc...

After first installation of those VMs/LXCs, each one has to be reacheable with its domain name, like for example:

  • ynh1.mydomain.org
  • ynh2.mydomain.org
  • ynh3.mydomain.org

For that you will need a public IP for each one or reverse proxy... If your are lucky enough to have IPV6 and a /64 IPV6 scope, it won't be a problem to assign a public IPV6 to each YunoHost.

In addition, it's helpfull to have several domains names for each YunoHost, for example:

  • ynh1.mydomain.org
    • test11.mydomain.org
    • test12.mydomain.org
    • test13.mydomain.org
  • ynh2.mydomain.org
    • test21.mydomain.org
    • test22.mydomain.org
    • test23.mydomain.org
  • ynh3.mydomain.org
    • test31.mydomain.org
    • test32.mydomain.org
    • test33.mydomain.org

With that you will be able to install two apps on the same YunoHost first one at https://test11.mydomain.org and a second app at https://test12.mydomain.org (let say the first app is nextcloud_ynh the second one is collabora_ynh or onlyoffice_ynh)

When your infrastructure is up and ready, you will have to do snapshots of each VMs/LXCs. Doing that, you will be able to revert back to an happy and healthy YunoHost after doing install/backup/restore/upgrade of and app...

Don't forget to regularly upgrade your YunoHosts VMs/LXCs to the last release doing: revert back to last happy/healthy YunoHost snapshot and doing yunohost domain cert-renew --no-check && yunohost tools update && yunohost tools upgrade --apps && yunohost tools upgrade --system && apt autoremove. Take a snapshot after that successfull full upgrade. And after some testings or one week later, remove old snapshot. PS: that can be automated...

Doing that you will have all the time a full/ready to go YunoHosts infrastructure for advanced packagers. And if require, you can have some VMs/LXCs runnning the YunoHost testing or YunoHost next Debian main version.

Having your packages/commits available in each VMs/LXCs

There are several ways to have your freshly created package available from each VMs/LXCs 1- Do an ssh from the YunoHost VM/LXC to a central repository on your computer 2- rsync you central repository to each VM/LXC 3- use syncthing to syncrhonise you main repository on each VM/LXC

Shortcuts

Use and abuse of yunohost app install --args argument

You can do ugly thing considering mynewapp is the name/REPLACEBYYOURAPP of your app

To install your mynewapp app:

YNHAPP=mynewapp
yunohost app install /mycentralrepo/${YNHAPP}_ynh/ --debug --force --args domain=test11.mydomain.org&path=/myapp&admin=alice&is_public=true&language=en&password=awesomepassword

To remove your mynewapp app and reinstall it

YNHAPP=mynewapp 
yunohost app remove ${YNHAPP} --debug && yunohost app install /mycentralrepo/${YNHAPP}_ynh/ --debug --force --args domain=test11.mydomain.org&path=/myapp&admin=alice&is_public=true&language=en&password=awesomepassword

To backup your mynewapp app

YNHAPP=mynewapp 
yunohost backup create --apps ${YNHAPP} --debug

To restore your mynewapp app from the backup just made

YNHAPP=mynewapp 
yunohost backup restore XXXXXXXX-XXXXXX --apps ${YNHAPP} --debug

To upgrade your mynewapp

YNHAPP=mynewapp 
yunohost app upgrade ${YNHAPP} -f /mycentralrepo/${YNHAPP}_ynh/ --debug

With that, you will be able to launch different actions on differents YunoHost VMs/LXCs

Package_check

With advanced packaging comes CI_package_check, it lets you serialize and automate package_check.

Managing all the parallel packaging you are doing

When you do several things at the same time, sometimes you don't remember what is the next step for this or that app. A good tool to keep your TODO list organized is to use a kaban like: