builds-setting-build-resources.adoc

Setting build resources

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

Procedure

• Limit resources by specifying resource limits in a project’s default container limits.

• Or 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)

  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"

  3. 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.