Rest API

Direct API Calls

The API can also be accessed by interacting directly with the API server. This can be done by making curl calls to POST or GET information from the server. In order to make these calls you will need to provide certificates along with your request using the --cacert, --key, and --cert flags. Next you will need to provide the username and password for the RBAC along with a header that includes the content type and the --insecure flag. These flags will be the same for all of your interactions with the API server and can be seen in the following examples.

The most basic example of this interaction is getting the version of the API server. You can send a GET request to $PGO_APISERVER_URL/version and this will send back a json response including the API server version. This is important because the server version and the client version must match. If you are using pgo this means you must have the correct version of the client but with a direct call you can specify the client version as part of the request.

The API server is setup to work with the pgo command line interface so the parameters that are passed to the server can be found by looking at the related flags. For example, the series parameter used in the create example below is the same as the -e, --series flag that is described in the pgo cli docs.

Get API Server Version

curl --cacert $PGO_CA_CERT --key $PGO_CLIENT_KEY --cert $PGO_CA_CERT \
-u pgoadmin:examplepassword -H "Content-Type:application/json" --insecure \
-X GET $PGO_APISERVER_URL/version

You can create a cluster by sending a POST request to $PGO_APISERVER_URL/clusters. In this example --data is being sent to the API URL that includes the client version that was returned from the version call, the namespace where the cluster should be created, the name of the new cluster and the series number. Series sets the number of clusters that will be created in the namespace.

Create Cluster

curl --cacert $PGO_CA_CERT --key $PGO_CLIENT_KEY --cert $PGO_CA_CERT \
-u pgoadmin:examplepassword -H "Content-Type:application/json" --insecure \
-X POST --data \
  '{"ClientVersion":"4.2.2",
  "Namespace":"pgouser1",
  "Name":"mycluster",
  "Series":1}' \
$PGO_APISERVER_URL/clusters

The last two examples show you how to show and delete a cluster. Notice how instead of passing "Name":"mycluster" you pass "Clustername":"mycluster"to reference a cluster that has already been created. For the show cluster example you can replace "Clustername":"mycluster" with "AllFlag":true to show all of the clusters that are in the given namespace.

Show Cluster

curl --cacert $PGO_CA_CERT --key $PGO_CLIENT_KEY --cert $PGO_CA_CERT \
-u pgoadmin:examplepassword -H "Content-Type:application/json" --insecure \
-X POST --data \
  '{"ClientVersion":"4.2.2",
  "Namespace":"pgouser1",
  "Clustername":"mycluster"}' \
$PGO_APISERVER_URL/showclusters

Delete Cluster

curl --cacert $PGO_CA_CERT --key $PGO_CLIENT_KEY --cert $PGO_CA_CERT \
-u pgoadmin:examplepassword -H "Content-Type:application/json" --insecure \
-X POST --data \
  '{"ClientVersion":"4.2.2",
  "Namespace":"pgouser1",
  "Clustername":"mycluster"}' \
$PGO_APISERVER_URL/clustersdelete