Service¶
Overview¶
Service (stack service) is a basic unit of managed infrastructure. Services have versions and manifests. Services can be added only by importing from a git repository. Most services have a template (Wodby template) and kubernetes manifests, however some types of services (like config) may not have kubernetes manifests.
Type¶
Every service has a type. Type defines the behavior of a service and how it managed. There are several types of services:
service¶
Stateless service, e.g. Nginx. Can be scaled up and down. Usually, services of this type have a template and kubernetes manifests
db¶
Database servers, stateful services. Usually, services of this type have a template and kubernetes manifests
infrastructure¶
Used in infrastructure applications, currently, can be added only by Wodby.
storage¶
Used for distributed storage services, e.g. NFS, Rook or Longhorn. Usually, services of this type have a template and kubernetes manifests
datastore¶
Memory storages like Redis and Memcached, stateful services. Usually, services of this type have a template and kubernetes manifests
search¶
Stateful services, search engines like Elasticsearch and Solr Cloud.
ssh¶
SSH server, usually used as derivative services
proxy¶
Reverse proxy servers like Varnish and HAProxy
Inheritance¶
Services can inherit from other services. Inheritance is a way to extend a service with additional configuration. For example, you can create a new service that inherits from the php service and add additional environment variables or links to it.
Derivatives¶
Derivatives are services that created from other services. For example, ssh server service added as a derivative to PHP-FPM.
Options¶
Options usually used to represent service versions, e.g. Nginx has two options: 1.23 and 1.22. A service can have multiple options, specify one of them as default and add to some of them End of Life (EOL) date.