Installation

Walis is one self-contained binary. What changes between deployments is where the data lives and how many nodes read it.

Choosing a topology

Topology	Database	API nodes	Choose when
Single node, SQLite	SQLite file	1	The default. Nothing to run but Walis.
Single node + database	PostgreSQL / MySQL / SQL Server	1	You already run a database, or you want the option to scale later.
Cluster	PostgreSQL / MySQL / SQL Server	2 or more	The API must survive a node going down.
Remote runners	any of the above	—	Builds need another machine, OS or architecture.

Remote runners are orthogonal to the first three: add them to any topology without changing the database or the node count.

Install with one command

curl -fsSL https://walis.io/install.sh | sh

It detects the platform, downloads the matching archive, verifies it against SHA256SUMS.txt and installs it — /usr/local/walis as root, ~/.walis otherwise, with a walis symlink on your path.

To turn a machine into a build agent, install the runner instead and register it as a service:

curl -fsSL https://walis.io/install.sh | sudo sh -s -- \
  --runner --service --server http://walis.internal:11120 --name pi-01 --token <token>

--service writes a systemd unit and starts it. Each version installs into its own directory with a server-current symlink pointing at the live one, so an upgrade is a symlink swap. The script is POSIX sh — it runs under dash, which is /bin/sh on Debian and Ubuntu.

Windows is not covered: download the zip below. --base-url points the script at your own file server when the machine cannot reach GitHub.

What you download

deploy/release.sh produces one archive per platform, plus a SHA256SUMS.txt:

Archive	Contains	Executable
walis-<version>-<target>	API with the admin UI built in	Walis.Api
walis-runner-<version>-<target>	The runner agent	walis-runner

Targets: win-x64, win-arm64, osx-x64, osx-arm64, linux-x64, linux-arm64, linux-arm (32-bit Raspberry Pi), linux-musl-x64, linux-musl-arm64 (Alpine). Everything is self-contained — the target machine needs no .NET.

Single node, SQLite

The default, and the whole point of Walis: nothing to install first.

tar xzf walis-<version>-linux-x64.tar.gz
./Walis.Api --urls http://0.0.0.0:11120

The database is created on first start at data/walis.db, relative to the API content root. The admin UI is served from the same port and origin as the API.

On macOS there is a turnkey service installer:

sudo ./deploy/install.sh --user <account> --port 11120

It registers two LaunchDaemons — the service, running as an ordinary account rather than root, and a restarter that watches a trigger file so the self-update job can restart the service from outside its own process tree. On Windows and Linux, run the binary under whatever init system you already use.

GET /health reports clustered: false. That is not a limitation you have to plan around now — it is a starting point you can move off later with a backup and a restore.

Move on when you want the data off this machine, or you need more than one node.

Single node + database

Still one process. The difference is that the data is no longer a file on this machine.

export ConnectionStrings__Walis='Host=db.internal;Database=walis;Username=walis;Password=…'
export Database__Provider=postgresql
./Walis.Api --urls http://0.0.0.0:11120

Database__Provider accepts sqlite, postgresql, mysql or sqlserver (postgres, npgsql, mariadb, mssql and azuresql are accepted aliases). Leave it unset and Walis guesses from the connection string — a wrong guess fails at startup rather than halfway through a build, which is the cheaper of the two failures.

Moving existing data across

The backup archive is engine-agnostic, so migrating is a backup and a restore:

1. Back up on the SQLite deployment — Settings → Backup.
2. Point the node at the new database.
3. Restore the archive. Restore clears the target first, so do it before putting traffic on it.

Cluster

Two or more API nodes against one database, behind a load balancer.

Requirements: a server database — not SQLite. SQLite is a single file; pointing two nodes at one does not give you high availability, it gives you corruption, so Walis treats it as single-node and does not attempt to coordinate.

Give every node the same connection string and its own name:

export ConnectionStrings__Walis='Host=db.internal;Database=walis;Username=walis;Password=…'
export Database__Provider=postgresql
export Database__Node=walis-a          # defaults to the machine name
./Walis.Api --urls http://0.0.0.0:11120

Check which node answered:

GET /health
{ "status": "ok", "database": "PostgreSQL", "node": "walis-a", "clustered": true }

What the cluster does for you:

• Builds are claimed atomically. Two nodes can race for the same queued build; exactly one wins the Queued → Running transition and the other moves on.
• Once-only work is leased. Cron evaluation, offline-runner detection, retention cleanup and scheduled backups run on whichever node holds the lease. Leases expire, so a dead holder is replaced on the next pass — there is no coordination service to run, or to lose.
• Recovery is per node. A restarting node recovers only the builds it was running.

Details and the limits of what this buys you are in High availability.

Remote runners

The built-in local runner executes on the API machine. To build somewhere else — another OS, another architecture, a machine with the signing key — register a runner.

walis-runner \
  --server https://walis.example.com/ \
  --name builder-01 \
  --labels linux,docker \
  --slots 4 \
  --token walis_xxxxxx_yyyyyyyy

Flag	Meaning
--server	API address. Env WALIS_SERVER, default http://127.0.0.1:11126.
--name	Runner name. Env WALIS_RUNNER_NAME, defaults to the machine name.
--labels	Comma-separated tags. Descriptive.
--slots	Concurrent builds, default 2, clamped to 1–32.
--token	API key. Env WALIS_TOKEN. Required once sign-in is enabled.
--user / --password	Sign in instead of using a key. Needs an administrator account — prefer a bound key.
--workdir	Default working directory for jobs that do not set one.
--interval	Poll interval in seconds, default 5, clamped to 1–300.

Bind the key to the runner name. Create the API key on the accounts page bound to this runner; it can then only claim and report builds for that runner, so a leaked key gets an attacker nothing else.

The runner dials out — it polls POST /api/runners/{name}/claim on your interval — so the build machine needs no inbound port and no public address. A 204 means nothing is waiting; a 200 carries the planned steps and the environment variables for the job.

Only jobs whose runner field names this runner are claimed by it. Jobs with no runner set always go to the built-in local runner.

The step loop is the same code locally and remotely, so a step behaves identically either way — only the sink differs, writing to the database or posting HTTP.