Submariner's cloud-prepare is a Go library that provides API and capabilities for setting up cloud infrastructure in order to install Submariner.
The main API defines the capabilities for any Cloud:
- Preparing the cloud for setting up Submariner.
- Cleaning up the cloud after Submariner has been uninstalled.
These capabilities aim to be idempotent, so in case of failure or other necessity they are safe to re-run.
The API defines a Reporter type which has the capability to report on the latest operation performed in the cloud.
The PrepareForSubmarinerInput function takes the number of gateways, the internal ports used for intra-cluster communication between
Submariner components, and the public ports used for inter-cluster communication between Submariner gateways.
input := api.PrepareForSubmarinerInput{
InternalPorts: []api.PortSpec{
{Port: vxlanPort, Protocol: "udp"},
{Port: metricsPort, Protocol: "tcp"},
},
PublicPorts: []api.PortSpec{
{Port: nattPort, Protocol: "udp"},
{Port: natDiscoveryPort, Protocol: "udp"},
},
Gateways: gateways,
}
err := cloud.PrepareForSubmariner(input, reporter)The CleanupAfterSubmariner function reverses all the preparation work previously done by the library.
err := cloud.CleanupAfterSubmariner(reporter)In order to prepare an AWS instance, it needs to have OpenShift pre-installed and running.
// The gwDeployer deploys the gateway and is pluggable.
// This one deploys straight to K8s using MachineSet.
gwDeployer := cloudprepareaws.NewK8sMachinesetDeployer(k8sConfig)
// Create a new Cloud from an existing AWS session;
// infraID, region and gwInstanceType are necessary to properly deploy on AWS.
cloud := cloudprepareaws.NewCloud(
gwDeployer, ec2.New(awsSession), infraID, region, gwInstanceType)In order to prepare a GCP instance, it needs to have OpenShift pre-installed and running.
import (
"golang.org/x/oauth2/google"
dns "google.golang.org/api/dns/v1"
gcpclient "github.com/submariner-io/cloud-prepare/pkg/gcp/client"
cloudpreparegcp "github.com/submariner-io/cloud-prepare/pkg/gcp"
)
// Create Google credentials from a JSON value.
// The JSON can represent either a Google Developers Console client_credentials.json file (as in ConfigFromJSON)
// or a Google Developers service account key file (as in JWTConfigFromJSON).
credentials, err := google.CredentialsFromJSON(context.TODO(), authJSON, dns.CloudPlatformScope)
if err != nil {
t.Fatal(err)
}
// Create a GCP client with the credentials.
client, err := gcpclient.NewClient([]option.ClientOption{option.WithCredentials(credentials)})
if err != nil {
return err
}
// Create a new Cloud with the GCP client and the projectID of the credentials, infraID is necessary to properly deploy on GCP.
cloud := cloudpreparegcp.NewCloud(credentials.ProjectID, infraID, client)
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