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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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28
driver/manager.go
View File

@ -6,6 +6,7 @@ import (
dockerclient "github.com/docker/docker/client"
"github.com/pkg/errors"
"k8s.io/client-go/tools/clientcmd"
)
type Factory interface {
@ -23,11 +24,14 @@ type BuildkitConfig struct {
type InitConfig struct {
// This object needs updates to be generic for different drivers
Name string
DockerAPI dockerclient.APIClient
BuildkitFlags []string
ConfigFile string
DriverOpts map[string]string
Name string
DockerAPI dockerclient.APIClient
KubeClientConfig clientcmd.ClientConfig
BuildkitFlags []string
ConfigFile string
DriverOpts map[string]string
// ContextPathHash can be used for determining pods in the driver instance
ContextPathHash string
}
var drivers map[string]Factory
@ -72,13 +76,15 @@ func GetFactory(name string, instanceRequired bool) Factory {
return nil
}
func GetDriver(ctx context.Context, name string, f Factory, api dockerclient.APIClient, flags []string, config string, do map[string]string) (Driver, error) {
func GetDriver(ctx context.Context, name string, f Factory, api dockerclient.APIClient, kcc clientcmd.ClientConfig, flags []string, config string, do map[string]string, contextPathHash string) (Driver, error) {
ic := InitConfig{
DockerAPI: api,
Name: name,
BuildkitFlags: flags,
ConfigFile: config,
DriverOpts: do,
DockerAPI: api,
KubeClientConfig: kcc,
Name: name,
BuildkitFlags: flags,
ConfigFile: config,
DriverOpts: do,
ContextPathHash: contextPathHash,
}
if f == nil {
var err error