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第 9 章 Performing advanced builds

The following sections provide instructions for advanced build operations including setting build resources and maximum duration, assigning builds to nodes, chaining builds, build pruning, and build run policies.

9.1. Setting build resources
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By default, builds are completed by pods using unbound resources, such as memory and CPU. These resources can be limited.

Procedure

You can limit resource use in two ways:

  • Limit resource use by specifying resource limits in the default container limits of a project.

  • Limit resource use by specifying resource limits as part of the build configuration. ** In the following example, each of the resources, cpu, and memory parameters are optional: 

    apiVersion: "v1"
kind: "BuildConfig"
metadata:
  name: "sample-build"
spec:
  resources:
    limits:
      cpu: "100m"
    1 
    
      memory: "256Mi"
    2
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    1
    cpu is in CPU units: 100m represents 0.1 CPU units (100 * 1e-3).
    2
    memory is in bytes: 256Mi represents 268435456 bytes (256 * 2 ^ 20).

    However, if a quota has been defined for your project, one of the following two items is required:

    • A resources section set with an explicit requests: 

      resources:
  requests:
      1 
      
    cpu: "100m"
    memory: "256Mi"
      Copy to Clipboard Toggle word wrap
      1
      The requests object contains the list of resources that correspond to the list of resources in the quota.

    • A limit range defined in your project, where the defaults from the LimitRange object apply to pods created during the build process.

      Otherwise, build pod creation will fail, citing a failure to satisfy quota.

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