writer-elector-operator

K8s operator for creating a single writer Endpoint from a Kubernetes Endpoints resource.

Annotations

Annotation	Description	Default
writer-elector.myonlinestore.com/elector	There are some specific election handlers for certain protocols. One of: default, postgres	default
writer-elector.myonlinestore.com/writer-create	Create writer service	true
writer-elector.myonlinestore.com/writer-service-name	Name of the writer service that will be created	{name}-writer
writer-elector.myonlinestore.com/reader-create	Create reader service	false
writer-elector.myonlinestore.com/reader-service-name	Name of the reader service that will be created	{name}-reader
writer-elector.myonlinestore.com/read-from-writer	Include the elected writer in the reader service	true
writer-elector.myonlinestore.com/secret-name	Name of a secret in the same namespace to use for authentication of certain protocols

default election handler

The default election handler will elect the first ready endpoint as writer and only failover when it becomes not ready. If the create-reader annotation is set, a service will be created with all ready endpoints.

postgres election handler

The postgres election handler will elect the first postgres pod as writer, for which is ready and has the transaction_read_only variable set to false. If the create-reader annotation is set, a service will be created with all ready endpoints.

postgres extra annotations

Annotation	Description	Default
writer-elector.myonlinestore.com/secret-postgres-username	The key inside the Secret that contains the postgres username.	POSTGRES_USERNAME
writer-elector.myonlinestore.com/secret-postgres-password	The key inside the Secret that contains the postgres password.	POSTGRES_PASSWORD