Leader Elector

A simple leader election sidecar container for Kubernetes based on the recent client-go library. It aims to provide an alternative to the widely used but outdated election component of kubernetes/contrib.

Configuration Flags

The following arguments can be passed on the command line, or by setting the environment variable named in brackets.

• election - name of the election and the corresponding lock resource (ELECTION_NAME).
• namespace - the Kubernetes namespace to run the election in (ELECTION_NAMESPACE).
• locktype - the resource type to use as the lock for this deployment (ELECTION_TYPE). Supported lock types are:
  • configmaps - default
  • leases
  • endpoints
• port - the port on which the election sidecar can be queried (ELECTION_PORT).

Example

A working example deployment can be found under example/deployment.yaml. The necessary Role and RoleBindings must be applied prior via example/rbac.yaml.

Sidecar Response

{
  "name": "election-example-7548f6f8f7-fml47"
}