Install on Linux

This page installs the released server binary. To run the published container instead, use Run with Docker; to build from source, use First start.

Install

curl -fsSL https://moongate.sh/install.sh | sh

The script resolves the latest release, downloads the archive for this machine, checks it against the checksum published beside it, and puts it in place:

Path	Contents
/opt/moongate/	The archive’s contents: the server binary, the core SQL in migrations/, the migration runner in migration-runner/, mgboot (releases after 0.6.0), LICENSE, THIRD-PARTY-NOTICES.md and the debug symbols
/usr/local/bin/moongate	A symlink to /opt/moongate/Moongate.Server
/usr/local/bin/mgboot	A symlink to /opt/moongate/mgboot, when the release contains it

Both locations need root. Run the line as root, or leave it to sudo, which the script uses itself when it is not running as root. Nothing else is created: no service, no system user and no data directory, because you choose where the server root lives at the first start.

Releases ship linux-x64 and linux-arm64. Both binaries are self-contained, so the machine needs no .NET runtime. Systems using musl, Alpine among them, are refused: the binary is built against glibc. On macOS and Windows, take the archive for your platform from the releases page, or use Docker.

Next: first start

Never run the server inside /opt/moongate. Upgrading replaces that whole directory, so configuration, plugins and generated files kept there are lost the next time the install line runs; as an ordinary user the attempt fails anyway with Access to the path '/opt/moongate/moongate.pid.lock' is denied. Give the server a root of its own and prepare it:

sudo mkdir -p /srv/moongate && sudo chown "$USER" /srv/moongate
mgboot /srv/moongate

mgboot ships in releases after 0.6.0; on 0.6.0 the first-start guide shows the equivalent manual steps. Then follow Start a Moongate server: edit the generated config/moongate.toml, create the two PostgreSQL databases, apply the core migrations with /opt/moongate/migration-runner/Moongate.MigrationRunner, and start with moongate --root-directory /srv/moongate.

Upgrade

Run the same line again. The new release is staged beside the current one and swapped in with a rename, so a failed download or a bad checksum leaves the running installation untouched. Stop the server first: replacing the binary under a live process is not supported.

The upgrade replaces /opt/moongate entirely and deletes the copy it moved aside. Nothing you want to keep belongs in there, which is why the server root goes somewhere else.

Remove

sudo rm -rf /opt/moongate /usr/local/bin/moongate /usr/local/bin/mgboot

Your server root is untouched by both the installer and this line.

Options

The script reads five environment variables:

Variable	Default	Purpose
MOONGATE_VERSION	the latest release	Install a specific version, such as 0.6.0; a leading v is accepted
MOONGATE_RID	detected from uname -m	linux-x64 or linux-arm64
MOONGATE_BASE_URL	the GitHub release downloads	A mirror holding the same file names
MOONGATE_INSTALL_DIR	/opt/moongate	Where the archive’s contents go
MOONGATE_BIN_DIR	/usr/local/bin	Where the moongate symlink goes

Pointing the last two at paths you own installs without root:

curl -fsSL https://moongate.sh/install.sh |
  MOONGATE_INSTALL_DIR="$HOME/.local/lib/moongate" MOONGATE_BIN_DIR="$HOME/.local/bin" sh

Read it before you run it

Piping a script into a shell runs whatever that URL serves. The file is scripts/install.sh in this repository, and the site serves it verbatim, so you can read the copy you are about to run:

curl -fsSL https://moongate.sh/install.sh | less

To skip the script entirely, download the archive and its checksum from the releases page and check it yourself:

sha256sum -c moongate-linux-x64-0.6.0.tar.gz.sha256
tar -xzf moongate-linux-x64-0.6.0.tar.gz

When it refuses

Every refusal prints one line starting with moongate:. Up to could not install into, nothing was installed; the symlink messages below it come after the files are already in place.

Message	Meaning
this installer supports Linux only	Use Docker or the archive for your platform
unsupported architecture '...'	The releases ship linux-x64 and linux-arm64
musl libc is not supported; the release binary needs glibc	Alpine and other musl systems need the container image
curl or wget is required, tar is required, sha256sum or shasum is required	Install the named tool
root privileges are required	Re-run with sudo, or set MOONGATE_INSTALL_DIR and MOONGATE_BIN_DIR
could not resolve the latest release; set MOONGATE_VERSION	The releases page did not redirect to a version tag; pin one with MOONGATE_VERSION
release v... has no asset for ..., release v... has no checksum for ...	That version has no archive, or no checksum file, for this architecture, or the download itself failed; linux-arm64 exists from 0.4.1 onwards
checksum mismatch for ...	The download does not match the published checksum; nothing was installed
the archive could not be extracted, the archive does not contain moongate-.../Moongate.Server	The downloaded archive is damaged or has an unexpected layout
could not clear a leftover staging directory beside ..., could not create ..., could not stage the new files in ..., could not make ... executable, could not move the current installation aside; ... is untouched, could not install into ...	The filesystem refused a step of the installation, for instance a full disk. Nothing new is installed, an upgrade keeps the previous installation, and the message says where it is
could not replace .../moongate, could not link .../moongate	The new files are in place under /opt/moongate, but the moongate symlink could not be replaced. Fix the bin directory and run the line again, or make the link yourself with sudo ln -sfn /opt/moongate/Moongate.Server /usr/local/bin/moongate
could not replace .../mgboot, could not link .../mgboot, could not remove obsolete .../mgboot link	The server files are in place; only the mgboot symlink could not be updated or removed. Fix the bin directory and run the line again, or link it yourself with sudo ln -sfn /opt/moongate/mgboot /usr/local/bin/mgboot