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134 lines
3.9 KiB
Markdown
134 lines
3.9 KiB
Markdown
# Testing the installer
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Zulip's install process is tested as part of [its continuous
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integrations suite][ci], but that only tests the most common
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configurations; when making changes to more complicated [installation
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options][installer-docs], Zulip provides tooling to repeatedly test
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the installation process in a clean environment each time.
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[ci]: https://github.com/zulip/zulip/actions/workflows/production-suite.yml?query=branch%3Amain
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[installer-docs]: ../production/install.md
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## Configuring
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Using the test installer framework requires a Linux operating system;
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it will not work on WSL, for instance. It requires at least 3G of
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RAM, in order to accommodate the VMs and the steps which build the
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release assets.
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To begin, install the LXC toolchain:
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```bash
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sudo apt-get install lxc lxc-utils
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```
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All LXC commands (and hence many parts of the test installer) will
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need to be run as root.
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## Running a test install
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### Build and unpack a release tarball
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You only need to do this step once per time you work on a set of
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changes, to refresh the package that the installer uses. The installer
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doesn't work cleanly out of a source checkout; it wants a release
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checkout, so we build a tarball of one of those first:
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```bash
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./tools/build-release-tarball test-installer
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```
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This will produce a file in /tmp, which it will print out the path to
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as the last step; for example,
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`/tmp/tmp.fepqqNBWxp/zulip-server-test-installer.tar.gz`
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Next, unpack that file into a local directory; we will make any
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changes we want in our source checkout and copy them into this
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directory. The test installer needs the release directory to be named
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`zulip-server`, so we rename it and move it appropriately. In the
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first line, you'll need to substitute the actual path that you got for
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the tarball, above:
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```bash
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tar xzf /tmp/tmp.fepqqNBWxp/zulip-server-test-installer.tar.gz
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mkdir zulip-test-installer
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mv zulip-server-test-installer zulip-test-installer/zulip-server
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```
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You should delete and re-create this `zulip-test-installer` directory
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(using these steps) if you are working on a different installer
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branch, or a significant time has passed since you last used it.
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### Test an install
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The `test-install` tooling takes a distribution release name
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(e.g. "jammy"), the path to an unpacked release directory
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or tarball, and then any of the normal options you want to pass down
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into the installer.
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For example, to test an install onto Ubuntu 22.04 "Jammy", we might
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call:
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```bash
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sudo ./tools/test-install/install \
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-r jammy \
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./zulip-test-installer/ \
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--hostname=zulip.example.net \
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--email=username@example.net
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```
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The first time you run this command for a given distribution, it will
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build a "base" image for that to use on subsequent times; this will
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take a while.
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### See running containers after installation
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Regardless of if the install succeeds or fails, it will stay running
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so you can inspect it. You can see all of the containers which are
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running, and their randomly-generated names, by running:
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```bash
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sudo lxc-ls -f
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```
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### Connect to a running container
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After using `lxc-ls` to list containers, you can choose one of them
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and connect to its terminal:
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```bash
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sudo lxc-attach --clear-env -n zulip-install-jammy-PUvff
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```
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### Stopping and destroying containers
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To destroy all containers (but leave the base containers, which speed
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up the initial install):
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```bash
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sudo ./tools/test-install/destroy-all -f
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```
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To destroy just one container:
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```bash
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sudo lxc-destroy -f -n zulip-install-jammy-PUvff
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```
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### Iterating on the installer
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Iterate on the installer by making changes to your source tree,
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copying them into the release directory, and re-running the installer,
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which will start up a new container. Here, we update just the
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`scripts` and `puppet` directories of the release directory:
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```bash
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rsync -az scripts puppet zulip-test-installer/zulip-server/
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sudo ./tools/test-install/install \
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-r jammy \
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./zulip-test-installer/ \
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--hostname=zulip.example.net \
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--email=username@example.net
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```
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