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kg

kg is the Kilo agent that runs on every Kubernetes node in a Kilo mesh. It performs several key functions, including:

  • adding the node to the Kilo mesh;
  • installing CNI configuration on the node;
  • configuring the WireGuard network interface; and
  • maintaining routing table entries and iptables rules.

kg is typically installed on all nodes of a Kubernetes cluster using a DaemonSet. Example manifests can be found in the manifests directory.

Usage#

The behavior of kg can be configured using the command line flags listed below.

Usage of bin//linux/amd64/kg:      --backend string            The backend for the mesh. Possible values: kubernetes (default "kubernetes")      --clean-up-interface        Should Kilo delete its interface when it shuts down?      --cni                       Should Kilo manage the node's CNI configuration? (default true)      --cni-path string           Path to CNI config. (default "/etc/cni/net.d/10-kilo.conflist")      --compatibility string      Should Kilo run in compatibility mode? Possible values: flannel      --create-interface          Should kilo create an interface on startup? (default true)      --encapsulate string        When should Kilo encapsulate packets within a location? Possible values: never, crosssubnet, always (default "always")      --hostname string           Hostname of the node on which this process is running.      --interface string          Name of the Kilo interface to use; if it does not exist, it will be created. (default "kilo0")      --kubeconfig string         Path to kubeconfig.      --listen string             The address at which to listen for health and metrics. (default ":1107")      --local                     Should Kilo manage routes within a location? (default true)      --log-level string          Log level to use. Possible values: all, debug, info, warn, error, none (default "info")      --master string             The address of the Kubernetes API server (overrides any value in kubeconfig).      --mesh-granularity string   The granularity of the network mesh to create. Possible values: location, full (default "location")      --mtu uint                  The MTU of the WireGuard interface created by Kilo. (default 1420)      --port uint                 The port over which WireGuard peers should communicate. (default 51820)      --resync-period duration    How often should the Kilo controllers reconcile? (default 30s)      --subnet string             CIDR from which to allocate addresses for WireGuard interfaces. (default "10.4.0.0/16")      --topology-label string     Kubernetes node label used to group nodes into logical locations. (default "topology.kubernetes.io/region")      --version                   Print version and exit