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new driver: kubernetes

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Tested with `kind` and GKE.

Note: "nodes" shown in `docker buildx ls` are unrelated to Kubernetes "nodes".
Probably buildx should come up with an alternative term.

Usage:

  $ kind create cluster
  $ export KUBECONFIG="$(kind get kubeconfig-path --name="kind")"

  $ docker buildx create --driver kubernetes --driver-opt replicas=3 --use
  $ docker buildx build -t foo --load .

`--load` loads the image into the local Docker.

Driver opts:

  - `image=IMAGE` - Sets the container image to be used for running buildkit.
  - `namespace=NS` - Sets the Kubernetes namespace. Defaults to the current namespace.
  - `replicas=N` - Sets the number of `Pod` replicas. Defaults to 1.
  - `rootless=(true|false)` - Run the container as a non-root user without `securityContext.privileged`. Defaults to false.
  - `loadbalance=(sticky|random)` - Load-balancing strategy. If set to "sticky", the pod is chosen using the hash of the context path. Defaults to "sticky"

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
This commit is contained in:
Akihiro Suda
2019-10-21 15:02:37 +09:00
parent f5c2673878
commit 6b65b0c982
657 changed files with 258673 additions and 370 deletions
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13
commands/build.go
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@ -3,6 +3,7 @@ package commands
import (
"context"
"os"
"path/filepath"
"strings"
"github.com/docker/buildx/build"
@ -175,11 +176,17 @@ func runBuild(dockerCli command.Cli, in buildOptions) error {
}
opts.Allow = allow
return buildTargets(ctx, dockerCli, map[string]build.Options{"default": opts}, in.progress)
// key string used for kubernetes "sticky" mode
contextPathHash, err := filepath.Abs(in.contextPath)
if err != nil {
contextPathHash = in.contextPath
}
return buildTargets(ctx, dockerCli, map[string]build.Options{"default": opts}, in.progress, contextPathHash)
}
func buildTargets(ctx context.Context, dockerCli command.Cli, opts map[string]build.Options, progressMode string) error {
dis, err := getDefaultDrivers(ctx, dockerCli)
func buildTargets(ctx context.Context, dockerCli command.Cli, opts map[string]build.Options, progressMode, contextPathHash string) error {
dis, err := getDefaultDrivers(ctx, dockerCli, contextPathHash)
if err != nil {
return err
}