NanoKVM Server

This is the backend server implementation for NanoKVM.

For detailed documentation, please visit our Wiki.

Structure

server
├── common       // Common utility components
├── config       // Server configuration
├── dl_lib       // Shared object libraries
├── include      // Header files for shared objects
├── logger       // Logging system
├── middleware   // Server middleware components 
├── proto        // API request/response definitions
├── router       // API route handlers
├── service      // Core service implementations
├── utils        // Utility functions
└── main.go

Configuration

The configuration file path is /etc/kvm/server.yaml.

proto: http
port:
    http: 80
    https: 443
cert:
    crt: server.crt
    key: server.key

# Log level (debug/info/warn/error)
# Note: Use 'info' or 'error' in production, 'debug' only for development
logger:
    level: info
    file: stdout
    
# Authentication setting (enable/disable)
# Note: Only disable authentication in development environment
authentication: enable

jwt:
   # JWT secret key. If left empty, a random 64-byte key will be generated automatically.
   secretKey: ""
   # JWT token expiration time in seconds. Default: 2678400 (31 days)
   refreshTokenDuration: 2678400
   # Invalidate all JWT tokens when the user logs out. Default: true
   revokeTokensOnLogout: true

# Address for custom STUN server
stun: stun.l.google.com:19302

# Address and authentication for custom TURN server
turn:
    turnAddr: turn.cloudflare.com:3478
    turnUser: example_user
    turnCred: example_cred

Compile & Deploy

Note: Use Linux operating system (x86-64). This build process is not compatible with ARM, Windows or macOS.

1. Install the Toolchain

   1. Download the toolchain from the following link: Download Link.
   2. Extract the file and add the host-tools/gcc/riscv64-linux-musl-x86_64/bin directory to your PATH environment variable.
   3. Run riscv64-unknown-linux-musl-gcc -v. If there is version information in the output, the installation is successful.

2. Compile the Project

   1. Run cd server from the project root directory.
   2. Run go mod tidy to install Go dependencies.
   3. Run CGO_ENABLED=1 GOOS=linux GOARCH=riscv64 CC=riscv64-unknown-linux-musl-gcc CGO_CFLAGS="-mcpu=c906fdv -march=rv64imafdcv0p7xthead -mcmodel=medany -mabi=lp64d" go build to compile the project.
   4. After compilation, an executable file named NanoKVM-Server will be generated.

3. Modify RPATH

   1. Run sudo apt install patchelf or pip install patchelf to install patchelf.
   2. Run patchelf --version. Ensure the version is 0.14 or higher`.
   3. Run patchelf --add-rpath \$ORIGIN/dl_lib NanoKVM-Server to modify the RPATH of the executable file.

4. Deploy the Application

   1. File uploads requires SSH. Please enable it in the Web Settings: Settings > SSH;
   2. Replace the original file in the NanoKVM /kvmapp/server/ directory with the newly compiled NanoKVM-Server.
   3. Restart the service on NanoKVM by executing /etc/init.d/S95nanokvm restart.

Manually Update

File uploads requires SSH. Please enable it in the Web Settings: Settings > SSH;

1. Download the latest application from GitHub;
2. Unzip the downloaded file and rename the unzipped folder to kvmapp;
3. Back up the existing /kvmapp directory on your NanoKVM, then replace it with the new kvmapp folder;
4. Run /etc/init.d/S95nanokvm restart on your NanoKVM to restart the service.