If you don't want to - or can't - install Tribblix locally, you can run it in the cloud.
Many smaller cloud providers offer an install from ISO option, which can be used along with the regular install process.
Or you can run Tribblix on an EC2 instance on AWS.
There are AMIs available for both vanilla Tribblix and the LX-enabled OmniTribblix. These are available in the London (eu-west-2) region. If you set your region to London, launch an instance, and then search Community AMIs for "illumos" or "Tribblix" then you should get some results like the following:
Specifically, the currently available AMIs are:
If you want to run Tribblix in a different region, then you'll have to copy the AMI.
When selecting an instance type, avoid the new generation of m5 and c5 instance types (they should be marked as unavailable in any case). The m4 and similar generation instances work well, as do t2 instances. The t2.micro is just fine for Tribblix, and is on the free tier.
After launching an instance, you should be able to log in as root with your key pair. That's the only way in, there's no jack account, and no valid root password. You should create your own regular users, of course.
If you want to store data, add an EBS volume and create a separate ZFS pool. (This will also make it easier to move the data to another instance when you need to.)
The images supplied only have a smallish system disk. If you need a bigger root pool (as opposed to adding a second data pool) then create the root EBS volume with a larger size and expand the pool with:
# zpool online -e rpool c2t0d0to get the additional space recognised. You can enlarge an EBS volume after instance creation, but it seems to take a reboot for Tribblix to realise that the volume size has changed.