The Kubernetes Universal Declarative Operator - KUDO - is a way of building Kubernetes operators in a declarative way. From a workload perspective, it defines a way to package manifest files in a gzipped tar file (an archive file with a .tgz file extension). The files in this tgz file are templated files that produce the standard manifest files identified in the user workload section.
Before you Begin
To run the KUDO controller or any KUDO workloads beyond the standard workload prerequisties, you will need:
Fortunately, the KUDO CLI provides features to help with the installation of the CRDs and for development purposes only, the ability to install a development version of a certification manager.
Run the KUDO Controller
To start the KUDO controller workload in the cluster run:
kubectl kudo init
This will install the KUDO CRDs and run the KUDO controller in the
kubectl get pod -n kudo-system NAME READY STATUS RESTARTS AGE kudo-controller-manager-0 1/1 Running 0 6m47s
Run a KUDO Operator
With a KUDO controller running in the cluster, it is possible to install a KUDO operator. KUDO operators are packaged in a tgz file and can be located anywhere. They can be referenced from the filesystem, or from a URL directly, but generally they are served from a KUDO repository. During a
kubectl kudo init, the default client initialization is performed along with the installation of the KUDO controller. The default repository is called the “community” repository and can be identified via the following:
kubectl kudo repo list NAME URL *community https://kudo-repository.storage.googleapis.com/0.10.0
To install a KUDO operator / workload, run
kubectl kudo install:
kubectl kudo install zookeeper operator default/zookeeper created operatorversion default/zookeeper-3.4.14-0.3.1 created instance default/zookeeper-instance created
The KUDO operators can have any number of workloads associated with them, which can change depending on installation configuration. For more details, see the KUDO project site.
For information on related topics or procedures, refer to the following: