- What's New
- Function Overview
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- User Guide
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Developer Guide
- Overview
- Using Native kubectl (Recommended)
- Namespace and Network
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- Collecting Pod Logs
- Managing Network Access Through Service and Ingress
- Using PersistentVolumeClaim to Apply for Persistent Storage
- ConfigMap and Secret
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- YAML Syntax
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API Reference
- Before You Start
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- Proprietary APIs
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Kubernetes APIs
- ConfigMap
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Deployment
- Querying All Deployments
- Deleting All Deployments in a Namespace
- Querying Deployments in a Namespace
- Creating a Deployment
- Deleting a Deployment
- Querying a Deployment
- Updating a Deployment
- Replacing a Deployment
- Querying the Scaling Operation of a Specified Deployment
- Updating the Scaling Operation of a Specified Deployment
- Replacing the Scaling Operation of a Specified Deployment
- Querying the Status of a Deployment
- Ingress
- OpenAPIv2
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- ResourceQuota
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API groups
- Querying API Versions
- Querying All APIs of v1
- Querying an APIGroupList
- Querying APIGroup (/apis/apps)
- Querying APIs of apps/v1
- Querying an APIGroup (/apis/batch)
- Querying an APIGroup (/apis/batch.volcano.sh)
- Querying All APIs of batch.volcano.sh/v1alpha1
- Querying All APIs of batch/v1
- Querying All APIs of batch/v1beta1
- Querying an APIGroup (/apis/crd.yangtse.cni)
- Querying All APIs of crd.yangtse.cni/v1
- Querying an APIGroup (/apis/extensions)
- Querying All APIs of extensions/v1beta1
- Querying an APIGroup (/apis/metrics.k8s.io)
- Querying All APIs of metrics.k8s.io/v1beta1
- Querying an APIGroup (/apis/networking.cci.io)
- Querying All APIs of networking.cci.io/v1beta1
- Querying an APIGroup (/apis/rbac.authorization.k8s.io)
- Querying All APIs of rbac.authorization.k8s.io/v1
- Event
- PersistentVolumeClaim
- RoleBinding
- StatefulSet
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- ReplicaSet
- Data Structure
- Permissions Policies and Supported Actions
- Appendix
- Out-of-Date APIs
- Change History
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FAQs
- Product Consulting
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Basic Concept FAQs
- What Is CCI?
- What Are the Differences Between Cloud Container Instance and Cloud Container Engine?
- What Is an Environment Variable?
- What Is a Service?
- What Is Mcore?
- What Are the Relationships Between Images, Containers, and Workloads?
- What Are Kata Containers?
- Can kubectl Be Used to Manage Container Instances?
- What Are Core-Hours in CCI Resource Packages?
- Workload Abnormalities
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Container Workload FAQs
- Why Service Performance Does Not Meet the Expectation?
- How Do I Set the Quantity of Instances (Pods)?
- How Do I Check My Resource Quotas?
- How Do I Set Probes for a Workload?
- How Do I Configure an Auto Scaling Policy?
- What Do I Do If the Workload Created from the sample Image Fails to Run?
- How Do I View Pods After I Call the API to Delete a Deployment?
- Why an Error Is Reported When a GPU-Related Operation Is Performed on the Container Entered by Using exec?
- Can I Start a Container in Privileged Mode When Running the systemctl Command in a Container in a CCI Cluster?
- Why Does the Intel oneAPI Toolkit Fail to Run VASP Tasks Occasionally?
- Why Are Pods Evicted?
- Why Is the Workload Web-Terminal Not Displayed on the Console?
- Why Are Fees Continuously Deducted After I Delete a Workload?
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Image Repository FAQs
- Can I Export Public Images?
- How Do I Create a Container Image?
- How Do I Upload Images?
- Does CCI Provide Base Container Images for Download?
- Does CCI Administrator Have the Permission to Upload Image Packages?
- What Permissions Are Required for Uploading Image Packages for CCI?
- What Do I Do If Authentication Is Required During Image Push?
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Network Management FAQs
- How Do I View the VPC CIDR Block?
- Does CCI Support Load Balancing?
- How Do I Configure the DNS Service on CCI?
- Does CCI Support InfiniBand (IB) Networks?
- How Do I Access a Container from a Public Network?
- How Do I Access a Public Network from a Container?
- What Do I Do If Access to a Workload from a Public Network Fails?
- What Do I Do If Error 504 Is Reported When I Access a Workload?
- What Do I Do If the Connection Timed Out?
- Storage Management FAQs
- Log Collection
- Account
- SDK Reference
- Videos
- General Reference
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ConfigMap
A ConfigMap is a resource object for storing configuration information required by applications. It uses the key-value pair to save configuration data. It can be used to save a single attribute or configuration file.
A ConfigMap can be used to decouple configuration and make different configurations in different environments. Compared with the environment variables, the ConfigMap referenced in the pod can be updated in real time. After the ConfigMap data is updated, the ConfigMap referenced in the pod is updated synchronously.
Creating a ConfigMap
In the following example, a ConfigMap named configmap-test is created. The ConfigMap configuration data is defined in the data field.
apiVersion: v1 kind: ConfigMap metadata: name: configmap-test data: # Configuration data property_1: Hello property_2: World
Referencing a ConfigMap in Environment Variables
A ConfigMap is usually referenced in environment variables and volumes.
In the following example, the property_1 of configmap-test is used as the value of the environment variable EXAMPLE_PROPERTY_1. In this case, the value of EXAMPLE_PROPERTY_1 is the value of property_1 after the container is started, that is, Hello.
apiVersion: v1 kind: Pod metadata: name: nginx spec: containers: - image: nginx:latest name: container-0 resources: limits: cpu: 500m memory: 1024Mi requests: cpu: 500m memory: 1024Mi env: - name: EXAMPLE_PROPERTY_1 valueFrom: configMapKeyRef: # Reference the ConfigMap. name: configmap-test key: property_1 imagePullSecrets: - name: imagepull-secret
Referencing a ConfigMap in a Volume
Referencing a ConfigMap in a volume is to fill its data in configuration files in the volume. Each piece of data is saved in a file. The key is the file name, and the key value is the file content.
In the following example, create a volume named vol-configmap, reference the ConfigMap named configmap-test in the volume, and mount the volume to the /tmp directory of the container. After the pod is created, there are two files property_1 and property_2 in the /tmp directory of the container, and the values are Hello and World.
apiVersion: v1 kind: Pod metadata: name: nginx spec: containers: - image: nginx:latest name: container-0 resources: limits: cpu: 500m memory: 1024Mi requests: cpu: 500m memory: 1024Mi volumeMounts: - name: vol-configmap # Mount the volume named vol-configmap. mountPath: "/tmp1" imagePullSecrets: - name: imagepull-secret volumes: - name: vol-configmap configMap: # Reference the ConfigMap. name: configmap-test
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