WildFly 17.0.1 is released!

The simplest command to install the latest version of WildFly into the directory my-wildfly is to call:

Most of that command is self-explanatory, but what about the wildfly:current part? That’s a feature-pack location or FPL. An FPL has a rich possible syntax, but most commonly you’ll see something simple like wildfly:current. This consists of two parts:

Use the list-feature-packs command to see what packs and channels are available:

Feature packs for wildfly, wildfly-core and wildfly-servlet are available, with wildfly-core and wildfly-servlet providing subsets of the traditional functionality of the WildFly application server. There are two channels for each, the current channel, which will have the latest release available, regardless of major/minor version, and then the 17.0 and 9.0 channels for wildfly/wildfly-servlet and wildfly-core respectively. The final in the Update Channel column for each channel indicates that the default frequency for the channel is final releases. This means that unless instructed otherwise by the user the Galleon tool when looking for releases from the channel will limit itself to final releases.

When provisioning a new server to which you anticipate applying updates when new versions come out, it’s good to consider which channel you want, as that will become the default place the Galleon tool looks for future updates. When doing an update you can specify the channel to use, but if you don’t do that, the channel associated with the installation will be used. So, if you don’t want your WildFly 17 installation accidentally updated to WildFly 18, use the 17.0 channel.

This blog is about updating an installation to 17.0.1.Final, so first we want to install 17.0.0. I’m going to install a customized build that uses the cloud-profile plus standard management functionality.

Note the #17.0.0.Final in the FPL. I included this because by default Galleon would install the latest final version in the channel, i.e. 17.0.1.Final. Since this post is about updating to 17.0.1 I didn’t want to start there, so I added a specific feature pack version to the FPL. Normally you wouldn’t need to include that when provisioning a server.

The get-info command tells us the status of the installation:

If I’m working inside a Galleon-provisioned installation, then I don’t need the --dir=my-wildfly in all the commands:

Use check-updates to find out if updates are available for an installation:

And then, update to do the upgrade:

Galleon will prompt you with a y/n prompt to confirm. You can pass a --yes param to the update command to suppress this confirmation prompt.

If for some reason you don’t like the result of a provisioning step, use the undo command to revert the most recent provisioning change (i.e. the update):

Finally, same as with the install command, you can provide the FPL of the feature pack to update. (Its dependencies will also be updated.) This can be useful, for example, if an installation was associated with the current channel but you want to be sure to only update to a WildFly 17 release.

In that example I included the --yes param to tell Galleon to skip the y/n confirmation prompt.

Of course in the real world you probably don’t provision a server, do nothing with it, and then update it. Instead, you probably modify the installation in some way after the initial install; e.g. add a deployment or use the CLI to change a configuration value. If you’ve done this, when you do an update, Galleon tracks the changes you have made and reapplies them.

This asciinema recording shows this kind of workflow in action. It also demonstrates the Galleon CLI’s interactive shell, where you can provide a series of commands without having to type galleon.sh all the time.

I start the recording after the initial provisioning.

Enjoy, and as always, thank you so much for your support of WildFly! And many thanks to Jean-Francois Denise for his help with this post!