Configuration and Secret management in GCP
There are many ways to pass configurations to containers at run-time. Although simple to set up, using Environmental Variables can become complex if there are too many configurations, especially files and certificates.
Using Kubernetes, you can populate environment variables using .
Creating and managing GCP Services and containers
For an end-to-end example of creating an GKE Service, see this tutorial.
In the DuploCloud Portal, navigate to Kubernetes -> Services.
Click Add. The Basic Options section of the Add Service page displays.
In the Service Name field, give the Service a name (without spaces).
From the Cloud list box, select Google.
From the Platform list box, select GKE Linux.
In the Docker Image field, enter the Docker image.
Optionally, enter any allocation tags in the Allocation Tag field.
From the Replica Strategy list box, select a replication strategy. Refer to the informational ToolTip ( ) for more information.
Specify the number of replicas in the Replicas field (for Static replica strategy). The number of replicas you define must be less than or equal to the number of Hosts in the fleet.
In the Replica Placement list box (for Static or Horizontal Pod Autoscaler replication strategies) select First Available, Place on Different Hosts, Spread Across Zones, or Different Hosts and Spread Across Zones. Refer to the informational ToolTip ( ) for more information.
Optionally, enter variables in the Environmental Variables field.
In the Force StatefulSets list box, select Yes or No (for Static or Horizontal Pod Autoscaler replication strategies).
Optionally, select Tolerate spot instances (for Static or Horizontal Pod Autoscaler replication strategies)
Click Next. The Add Service, Advanced Options page displays.
Configure advanced options as needed. For example, you can implement Kubernetes Lifecycle Hooks in the Other Container Config field (optional).
Click Create. The Service is created.
From the DuploCloud Portal, navigate to Kubernetes -> Services. Select the Service from the NAME column. The Service details page displays.
Using the Services page, you can start, stop, and restart multiple services simultaneously.
In the DuploCloud Portal, navigate to Kubernetes -> Services.
Use the checkbox column to select multiple services you want to start or stop at once.
From the Service Actions menu, select Start Service, Stop Service, or Restart Service. The selected Services are started, stopped, or restarted as you specified.
In the DuploCloud Portal, you can display and manage the containers you have defined.
Select the Tenant from the Tenant list box in the upper left.
Navigate to Kubernetes -> Containers.
Logs
Displays container logs.
State
Displays container state configuration, in YAML code, in a separate window.
Container Shell
Host Shell
Accesses the Host Shell.
Delete
Deletes the container.
Select the Options Menu ( ) in each container row to display Logs, State, Container Shell, Host Shell, and Delete options.
Accesses the Container Shell. To access the Container Shell option, you must first set up .
Set Docker registry credentials and Kubernetes secrets
In the DuploCloud Portal, navigate to Docker -> Services. Docker registry credentials are passed to the Kubernetes cluster as kubernetes.io/dockerconfigjson.
Click the Docker list box in the upper right, and select Docker Credentials. The Set Docker registry Creds pane displays.
Supply the credentials and click Submit.
Enable the Docker Shell Service by clicking Enable Docker Shell.
You can pull images from multiple Docker registries by adding multiple Docker Registry Credentials.
In the DuploCloud Portal, click Administrator -> Plan. The Plans page displays.
Select the Plan in the Name column.
Click the Config tab.
Click Add. The Add Config pane displays.
You can pass Docker Credentials using the Environment Variables config field in the Add Service Basic Options page. See the Kubernetes Configs and Secrets section.
