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Closes #5042 Smoke test plan: - Install on a before-Firezone VM - Confirm logs default to `str0m=warn,info` - Set log filter to `debug` in GUI - Restart IPC service - Confirm logs are `debug` - Clear settings back to default - Restart IPC service - Confirm logs are `str0m=warn,info` Directions to apply new log level: 1. Put the new log filter in 2. Click "Apply" 3. Quit Firezone Client 4. Right-click on the Start Menu and click "Terminal (Admin)" to open a Powershell prompt 5. Run `Restart-Service -Name FirezoneClientIpcService` (on Linux, `sudo systemctl restart firezone-client-ipc.service`) 6. Re-open Firezone Client ```[tasklist] - [x] Log the log filter maybe - [x] Use `atomicwrites` to write the file - [x] (cancelled) ~~Make the GUI write the file on boot if it's not there (saves a step when upgrading from older versions)~~ - [x] Windows smoke test - [x] Fix permissions on `/var/lib/dev.firezone.client/config` - [x] Fix Linux IPC service not loading the log filter file - [x] Linux smoke test - [ ] Make sure it's okay that users in `firezone-client` can change the device ID - [ ] Update user guides to include restarting the computer or IPC service after updating the log level? ``` --------- Signed-off-by: Reactor Scram <ReactorScram@users.noreply.github.com>
headless-client
This crate acts as the CLI / headless Client, and the privileged tunnel service for the GUI Client, for both Linux and Windows.
It is built as:
headless-clientto act as the Linux / Windows headless Clientfirezone-headless-clientto act as the Linux tunnel service, Windows headless Client, or Windows tunnel service
In general, the brand name should be part of the file name, but the OS name should not be.
Running
To run the headless Client:
- Generate a new Service account token from the "Actors -> Service Accounts" section of the admin portal and save it in your secrets manager. The Firezone Linux client requires a service account at this time.
- Ensure
/etc/dev.firezone.client/tokenis only readable by root (i.e.chmod 400) - Ensure
/etc/dev.firezone.client/tokencontains the Service account token. The Client needs this before it can start - Set
FIREZONE_IDto a unique string to identify this client in the portal, e.g.export FIREZONE_ID=$(uuidgen). The client requires this variable at startup. - Set
LOG_DIRto a suitable directory for writing logsexport LOG_DIR=/tmp/firezone-logs mkdir $LOG_DIR - Now, you can start the client with:
./firezone-headless-client standalone
If you're running as an unprivileged user, you'll need the CAP_NET_ADMIN
capability to open /dev/net/tun. You can add this to the client binary with:
sudo setcap 'cap_net_admin+eip' /path/to/firezone-headless-client
Building
Assuming you have Rust installed, you can build the headless Client with:
cargo build --release -p firezone-headless-client
The binary will be in target/release/firezone-headless-client
The release on Github are built with musl. To build this way, use:
rustup target add x86_64-unknown-linux-musl
sudo apt-get install musl-tools
cargo build --release -p headless-client --target x86_64-unknown-linux-musl
Files
/etc/dev.firezone.client/token- The service account token, provided by the human administrator. Must be owned by root and have 600 permissions (r/w by owner, nobody else can read) If present, the tunnel will ignore any GUI Client and run as a headless Client. If absent, the tunnel will wait for commands from a GUI Client/usr/bin/firezone-headless-client- The tunnel binary. This must run as root so it can modify the system's DNS settings. If DNS is not needed, it only needs CAP_NET_ADMIN./usr/lib/systemd/system/firezone-headless-client.service- A systemd service unit, installed by the deb package./var/lib/dev.firezone.client/config/firezone-id- The device ID, unique across an organization. The tunnel will generate this if it's not present.