Lester

Lester is a low-level API client for LXD. It features an intuitive interface that maps directly to the LXD API.

Usage Examples

1. Create client:

   lxd = Lester.new(socket: "/var/snap/lxd/common/lxd/unix.socket")
   
   # OR:
   #
   # lxd = Lester.new(
   #   base_uri: "https://1.2.3.4:8443",
   #   private_key: "priv.key",
   #   certificate: "cert.pem",
   #   # ca_certificates: "ca.pem",
   #   # verify_mode: "none"
   # )
   

2. Add new trusted certificate:

   lxd.certificates.add(
     certificate: "X509 PEM certificate...",
     name: "castiana",
     password: "secret",
     # ...
   ) do |response|
     return puts response.message unless response.success?
   
     puts response.type
     puts response.code
   end
   

3. List all images:

   lxd.images.list(project: "default") do |response|
     return puts response.message unless response.success?
   
     response.metadata.try &.each do |image|
       puts image.architecture
       puts image.auto_update?
       puts image.cached?
       # ...
     end
   end
   

4. Download instance backup:

   lxd.instances.backups.export(
     instance_name: "instance-04",
     name: "backup0",
     destination: "/home/user/Downloads/backup.zip"
   ) do |response|
     puts response.message
   end
   

5. Add new storage pool:

   lxd.pools.create(
     project: "default",
     target: "lxd0",
     config: {"volume.block.filesystem": "ext4", "volume.size": "50GiB"},
     description: "Local SSD pool",
     driver: "zfs",
     name: "local",
     # ...
   ) do |response|
     return puts response.message unless response.success?
   
     puts response.type
     puts response.code
   end
   

Documentation

Find the complete documentation in the docs/ directory of this repository.

Development

1. Create a .env.sh file:

   #!/bin/bash
   #
   
   export LXD_SOCKET='/var/snap/lxd/common/lxd/unix.socket'
   
   # Set these if you need to test against a remote LXD server
   export LXD_BASE_URI='https://1.2.3.4:8443'
   export LXD_TLS_KEY_PATH='priv.key'
   export LXD_TLS_CERT_PATH='cert.pem'
   export LXD_TLS_CA_PATH=''
   export LXD_TLS_VERIFY_MODE='none'
   

   Update the file with your own details.

2. Run tests with source .env.sh && crystal spec.

Contributing

1. Fork it
2. Switch to the master branch: git checkout master
3. Create your feature branch: git checkout -b my-new-feature
4. Make your changes, updating changelog and documentation as appropriate.
5. Commit your changes: git commit
6. Push to the branch: git push origin my-new-feature
7. Submit a new Pull Request against the GrottoPress:master branch.