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allow executors to define containerd and docker behavior

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Signed-off-by: Harrison Affel <harrisonaffel@gmail.com>
This commit is contained in:
Harrison Affel 2024-01-08 17:38:36 -05:00 committed by Vitor Savian
parent b1323935dc
commit a36cc736bc
7 changed files with 55 additions and 31 deletions
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5
pkg/agent/containerd/config_linux.go
View File

@ -4,7 +4,6 @@
package containerd
import (
"context"
"os"
"github.com/containerd/containerd"
@ -39,9 +38,9 @@ func getContainerdArgs(cfg *config.Node) []string {
return args
}
// setupContainerdConfig generates the containerd.toml, using a template combined with various
// SetupContainerdConfig generates the containerd.toml, using a template combined with various
// runtime configurations and registry mirror settings provided by the administrator.
func setupContainerdConfig(ctx context.Context, cfg *config.Node) error {
func SetupContainerdConfig(cfg *config.Node) error {
isRunningInUserNS := userns.RunningInUserNS()
_, _, controllers := cgroups.CheckCgroups()
// "/sys/fs/cgroup" is namespaced

6
pkg/agent/containerd/config_windows.go
View File

@ -4,8 +4,6 @@
package containerd
import (
"context"
"github.com/containerd/containerd"
"github.com/k3s-io/k3s/pkg/agent/templates"
"github.com/k3s-io/k3s/pkg/daemons/config"
@ -23,9 +21,9 @@ func getContainerdArgs(cfg *config.Node) []string {
return args
}
// setupContainerdConfig generates the containerd.toml, using a template combined with various
// SetupContainerdConfig generates the containerd.toml, using a template combined with various
// runtime configurations and registry mirror settings provided by the administrator.
func setupContainerdConfig(ctx context.Context, cfg *config.Node) error {
func SetupContainerdConfig(cfg *config.Node) error {
if cfg.SELinux {
logrus.Warn("SELinux isn't supported on windows")
}

10
pkg/agent/containerd/containerd.go
View File

@ -41,10 +41,6 @@ var (
// Run configures and starts containerd as a child process. Once it is up, images are preloaded
// or pulled from files found in the agent images directory.
func Run(ctx context.Context, cfg *config.Node) error {
if err := setupContainerdConfig(ctx, cfg); err != nil {
return err
}
args := getContainerdArgs(cfg)
stdOut := io.Writer(os.Stdout)
stdErr := io.Writer(os.Stderr)
@ -111,14 +107,14 @@ func Run(ctx context.Context, cfg *config.Node) error {
return err
}
return preloadImages(ctx, cfg)
return PreloadImages(ctx, cfg)
}
// preloadImages reads the contents of the agent images directory, and attempts to
// PreloadImages reads the contents of the agent images directory, and attempts to
// import into containerd any files found there. Supported compressed types are decompressed, and
// any .txt files are processed as a list of images that should be pre-pulled from remote registries.
// If configured, imported images are retagged as being pulled from additional registries.
func preloadImages(ctx context.Context, cfg *config.Node) error {
func PreloadImages(ctx context.Context, cfg *config.Node) error {
fileInfo, err := os.Stat(cfg.Images)
if os.IsNotExist(err) {
return nil

20
pkg/agent/run.go
View File

@ -13,8 +13,6 @@ import (
systemd "github.com/coreos/go-systemd/daemon"
"github.com/k3s-io/k3s/pkg/agent/config"
"github.com/k3s-io/k3s/pkg/agent/containerd"
"github.com/k3s-io/k3s/pkg/agent/cridockerd"
"github.com/k3s-io/k3s/pkg/agent/flannel"
"github.com/k3s-io/k3s/pkg/agent/netpol"
"github.com/k3s-io/k3s/pkg/agent/proxy"
@ -132,15 +130,12 @@ func run(ctx context.Context, cfg cmds.Agent, proxy proxy.Proxy) error {
}
}
if nodeConfig.Docker {
if err := cridockerd.Run(ctx, nodeConfig); err != nil {
notifySocket := os.Getenv("NOTIFY_SOCKET")
os.Unsetenv("NOTIFY_SOCKET")
if err := setupTunnelAndRunAgent(ctx, nodeConfig, cfg, proxy); err != nil {
return err
}
} else if nodeConfig.ContainerRuntimeEndpoint == "" {
if err := containerd.Run(ctx, nodeConfig); err != nil {
return err
}
}
// the agent runtime is ready to host workloads when containerd is up and the airgap
// images have finished loading, as that portion of startup may block for an arbitrary
@ -150,13 +145,6 @@ func run(ctx context.Context, cfg cmds.Agent, proxy proxy.Proxy) error {
close(cfg.AgentReady)
}
notifySocket := os.Getenv("NOTIFY_SOCKET")
os.Unsetenv("NOTIFY_SOCKET")
if err := setupTunnelAndRunAgent(ctx, nodeConfig, cfg, proxy); err != nil {
return err
}
if err := util.WaitForAPIServerReady(ctx, nodeConfig.AgentConfig.KubeConfigKubelet, util.DefaultAPIServerReadyTimeout); err != nil {
return errors.Wrap(err, "failed to wait for apiserver ready")
}

23
pkg/daemons/agent/agent.go
View File

@ -7,6 +7,7 @@ import (
"time"
"github.com/k3s-io/k3s/pkg/agent/config"
"github.com/k3s-io/k3s/pkg/agent/containerd"
"github.com/k3s-io/k3s/pkg/agent/proxy"
daemonconfig "github.com/k3s-io/k3s/pkg/daemons/config"
"github.com/k3s-io/k3s/pkg/daemons/executor"
@ -22,6 +23,17 @@ func Agent(ctx context.Context, nodeConfig *daemonconfig.Node, proxy proxy.Proxy
logsapi.ReapplyHandling = logsapi.ReapplyHandlingIgnoreUnchanged
logs.InitLogs()
defer logs.FlushLogs()
if nodeConfig.Docker {
if err := startDocker(ctx, nodeConfig); err != nil {
return err
}
} else if nodeConfig.ContainerRuntimeEndpoint == "" {
if err := startContainerd(ctx, nodeConfig); err != nil {
return err
}
}
if err := startKubelet(ctx, &nodeConfig.AgentConfig); err != nil {
return err
}
@ -53,6 +65,17 @@ func startKubelet(ctx context.Context, cfg *daemonconfig.Agent) error {
return executor.Kubelet(ctx, args)
}
func startContainerd(ctx context.Context, cfg *daemonconfig.Node) error {
if err := containerd.SetupContainerdConfig(cfg); err != nil {
return err
}
return executor.Containerd(ctx, cfg)
}
func startDocker(ctx context.Context, cfg *daemonconfig.Node) error {
return executor.Docker(ctx, cfg)
}
// ImageCredProvAvailable checks to see if the kubelet image credential provider bin dir and config
// files exist and are of the correct types. This is exported so that it may be used by downstream projects.
func ImageCredProvAvailable(cfg *daemonconfig.Agent) bool {

10
pkg/daemons/executor/embed.go
View File

@ -13,6 +13,8 @@ import (
"strconv"
"time"
"github.com/k3s-io/k3s/pkg/agent/containerd"
"github.com/k3s-io/k3s/pkg/agent/cridockerd"
"github.com/k3s-io/k3s/pkg/cli/cmds"
daemonconfig "github.com/k3s-io/k3s/pkg/daemons/config"
"github.com/k3s-io/k3s/pkg/util"
@ -256,6 +258,14 @@ func (e *Embedded) CurrentETCDOptions() (InitialOptions, error) {
return InitialOptions{}, nil
}
func (e *Embedded) Containerd(ctx context.Context, cfg *daemonconfig.Node) error {
return containerd.Run(ctx, cfg)
}
func (e *Embedded) Docker(ctx context.Context, cfg *daemonconfig.Node) error {
return cridockerd.Run(ctx, cfg)
}
// waitForUntaintedNode watches nodes, waiting to find one not tainted as
// uninitialized by the external cloud provider.
func waitForUntaintedNode(ctx context.Context, kubeConfig string) error {

10
pkg/daemons/executor/executor.go
View File

@ -31,6 +31,8 @@ type Executor interface {
CurrentETCDOptions() (InitialOptions, error)
ETCD(ctx context.Context, args ETCDConfig, extraArgs []string) error
CloudControllerManager(ctx context.Context, ccmRBACReady <-chan struct{}, args []string) error
Containerd(ctx context.Context, node *daemonconfig.Node) error
Docker(ctx context.Context, node *daemonconfig.Node) error
}
type ETCDConfig struct {
@ -169,3 +171,11 @@ func ETCD(ctx context.Context, args ETCDConfig, extraArgs []string) error {
func CloudControllerManager(ctx context.Context, ccmRBACReady <-chan struct{}, args []string) error {
return executor.CloudControllerManager(ctx, ccmRBACReady, args)
}
func Containerd(ctx context.Context, config *daemonconfig.Node) error {
return executor.Containerd(ctx, config)
}
func Docker(ctx context.Context, config *daemonconfig.Node) error {
return executor.Docker(ctx, config)
}