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andrewrynhard · 2017-08-23T04:05:48Z

What this PR does / why we need it:
Adds the addons phase command to kubeadm

andrewrynhard · 2017-08-23T04:06:54Z

+	var kubeConfigFile string
+	cfg := &kubeadmapiext.MasterConfiguration{}
+	cmd := &cobra.Command{
+		Use:     "addon",


I can change to plural "addons" if we want to allow multiple addons to be installed with one command.

I'd let this be addon but have an addons alias

andrewrynhard · 2017-08-23T04:07:29Z

+		Aliases: []string{},
+		Short:   "Install an addon to a Kubernetes cluster.",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if len(args) != 1 {


Do we want to allow multiple addons to be installed with one command?

See certs|kubeconfig|controlplane phases; they have an all command in addition

andrewrynhard · 2017-08-23T04:08:45Z

+			kubeadmutil.CheckErr(err)
+			addon := args[0]
+			switch addon {
+			case dnsaddon.KubeDNSServiceAccountName:


Should this be hardcoded or should we stick to using the service account name?

It might be that the ServiceAccountName constants are moved into the respective addon package eventually; so I'd hard-code kube-proxy|kube-dns here

andrewrynhard · 2017-08-23T04:09:24Z

@luxas I left a few comments. I can push updates based on your review.

andrewrynhard · 2017-08-23T06:11:32Z

+			client, err := kubeconfigutil.ClientSetFromFile(kubeConfigFile)
+			kubeadmutil.CheckErr(err)
+			addon := args[0]
+			switch addon {


If we are not happy with a switch statement, I can create a map[string]func(cfg, client), but that would depend on us sticking with the EnsureXXXAddon(cfg, client) convention.

Please try to model this as we've done for the other phases to be consistent here; a struct { } slice should do

Please provide users a way to inspect which addons could be managed with kubeadm addons; other phases are doing this by leveraging on cobra native support for --help and subcommands

luxas

Thanks @andrewrynhard
I'd like it to be a little bit more like the certs, kubeconfig and controlplane phases if that's okay with you.
Please make it possible to configure the addon creation with CLI flags.

/assign @fabriziopandini

luxas · 2017-08-23T06:46:44Z

+	var kubeConfigFile string
+	cfg := &kubeadmapiext.MasterConfiguration{}
+	cmd := &cobra.Command{
+		Use:     "addon",


I'd let this be addon but have an addons alias

luxas · 2017-08-23T06:47:27Z

+		Aliases: []string{},
+		Short:   "Install an addon to a Kubernetes cluster.",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if len(args) != 1 {


See certs|kubeconfig|controlplane phases; they have an all command in addition

luxas · 2017-08-23T06:49:04Z

+			kubeadmutil.CheckErr(err)
+			addon := args[0]
+			switch addon {
+			case dnsaddon.KubeDNSServiceAccountName:


It might be that the ServiceAccountName constants are moved into the respective addon package eventually; so I'd hard-code kube-proxy|kube-dns here

luxas · 2017-08-23T06:50:45Z

+	}
+
+	cmd.Flags().StringVar(&kubeConfigFile, "kubeconfig", "/etc/kubernetes/admin.conf", "The KubeConfig file to use for talking to the cluster")
+	return cmd


this should take --config as well and other relevant CLI args

Please add support as well for validate mixed argument logic if --config is combined with other flags. See e.g.

kubernetes/cmd/kubeadm/app/cmd/phases/util.go

Line 38 in 2f00e6d

if err := validation.ValidateMixedArguments(cmd.Flags()); err != nil {

luxas · 2017-08-23T06:51:40Z

+			client, err := kubeconfigutil.ClientSetFromFile(kubeConfigFile)
+			kubeadmutil.CheckErr(err)
+			addon := args[0]
+			switch addon {


Please try to model this as we've done for the other phases to be consistent here; a struct { } slice should do

andrewrynhard · 2017-08-25T04:23:30Z

@luxas PTAL, this is still a WIP but I believe it is a step in the direction you wanted.

fabriziopandini · 2017-08-25T06:18:35Z

+	return cmd
+}
+
+func EnsureAllAddons(cfg *kubeadmapi.MasterConfiguration, client clientset.Interface) error {


Is this function going to be replaced with https://github.com/kubernetes/kubernetes/pull/51171/files#diff-eadad99fe8edbb21ce1c0f32a362240a?

Yes, I will make that change and have it up in a bit.

fabriziopandini · 2017-08-25T06:40:25Z

@andrewrynhard 👍 from my side :-)
Apart from the comment/question above, IMO the only step missing is to add necessary CLI flags
/cc @luxas

luxas

A couple of change requests

luxas · 2017-08-25T13:11:50Z

+)
+
+// EnsureAllAddons install all addons to a Kubernetes cluster.
+func EnsureAllAddons(cfg *kubeadmapi.MasterConfiguration, client clientset.Interface) error {


please move this function client-side to be consistent; i.e. in cmd/phases/addons.go

luxas · 2017-08-25T13:13:48Z

 // EnsureDNSAddon creates the kube-dns addon
-func EnsureDNSAddon(cfg *kubeadmapi.MasterConfiguration, client clientset.Interface, k8sVersion *version.Version) error {
+func EnsureDNSAddon(cfg *kubeadmapi.MasterConfiguration, client clientset.Interface) error {
+	k8sVersion, err := version.ParseSemantic(cfg.KubernetesVersion)


I'd prefer to pass k8sVersion still and do the parsing client-side in cmd/phases
Luckily, I expect to soon get rid of this in the v1.9 cycle by moving this into the internal variant of cfg or something so we can stop passing and parsing this all the time.

The only issue I had with this was that I needed all the EnsureXXXAddon functions have the same signature. Look at the EnsureAllAddons and runAddonsCmdFunc functions. I'm happy to do something different if we still prefer to pass k8sVersion in.

ok with this for now; will fix it for real later

luxas · 2017-08-25T13:18:18Z

+
+		// Add flags to the command
+		cmd.Flags().StringVar(&kubeConfigFile, "kubeconfig", "/etc/kubernetes/admin.conf", "The KubeConfig file to use for talking to the cluster")
+		cmd.Flags().StringVar(&cfgPath, "config", cfgPath, "Path to kubeadm config file (WARNING: Usage of a configuration file is experimental)")


Please add flags for these fields:
common:

KubernetesVersion

ImageRepository

proxy:

AdvertiseAddress

BindPort

PodSubnet

dns:

DNSDomain

luxas · 2017-08-25T13:19:16Z

+		},
+		{
+			use:     "kube-dns",
+			short:   "Install kube-dns addon to a Kubernetes cluster.",


nit: Install the ...

luxas · 2017-08-25T13:19:19Z

+		},
+		{
+			use:     "kube-proxy",
+			short:   "Install kube-proxy addon to a Kubernetes cluster.",


nit: Install the ...

luxas · 2017-08-25T13:19:53Z

+		api.Scheme.Convert(cfg, internalcfg, nil)
+		client, err := kubeconfigutil.ClientSetFromFile(kubeConfigFile)
+		kubeadmutil.CheckErr(err)
+		// internalcfg, err := configutil.ConfigFileAndDefaultsToInternalConfig(*cfgPath, cfg)


why commented out?
Also pass cfgPath to this func

Whoops. This was a mistake.

andrewrynhard · 2017-08-26T21:29:45Z

@fabriziopandini @luxas I believe I have everything done now.

fejta-bot · 2017-09-03T14:45:50Z

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fejta-bot · 2017-09-03T20:00:50Z

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fejta-bot · 2017-09-04T00:54:50Z

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andrewrynhard · 2017-09-04T04:09:16Z

/retest

fejta-bot · 2017-09-04T06:51:20Z

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luxas · 2017-09-04T08:10:49Z

/retest

luxas · 2017-09-04T08:11:24Z

@andrewrynhard this needs a rebase

fejta-bot · 2017-09-04T11:03:50Z

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fejta-bot · 2017-09-04T13:51:49Z

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fejta-bot · 2017-09-04T16:39:50Z

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fejta-bot · 2017-09-04T20:09:50Z

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andrewrynhard · 2017-09-05T01:34:37Z

/retest

andrewrynhard · 2017-09-07T03:57:13Z

/test pull-kubernetes-e2e-kops-aws

andrewrynhard · 2017-09-07T03:57:20Z

/test pull-kubernetes-e2e-gce-etcd3

andrewrynhard · 2017-09-07T05:26:10Z

/test pull-kubernetes-e2e-kops-aws

luxas

/lgtm

k8s-github-robot · 2017-09-07T06:08:27Z

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andrewrynhard, luxas

Associated issue: 418

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k8s-github-robot · 2017-09-07T06:09:09Z

/test all [submit-queue is verifying that this PR is safe to merge]

k8s-github-robot · 2017-09-07T07:03:15Z

Automatic merge from submit-queue

k8s-ci-robot · 2017-09-07T07:06:50Z

@andrewrynhard: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
pull-kubernetes-e2e-kops-aws	`d55cea6`	link	`/test pull-kubernetes-e2e-kops-aws`
pull-kubernetes-e2e-gce-bazel	`d55cea6`	link	`/test pull-kubernetes-e2e-gce-bazel`

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fabriziopandini · 2017-09-07T09:42:53Z

👍

r2d4 · 2017-09-07T18:30:54Z

+			kubeadmutil.CheckErr(err)
+		}
+
+		var kubeConfigFile string


I'm not able to actually get any of these commands working. Because of this closure, the kubeconfig value from the flag won't ever get used.

$ _output/bin/kubeadm alpha phase addon all --kubeconfig test failed to load admin kubeconfig [open : no such file or directory]

cc @luxas @andrewrynhard

I can have a fix soon. Thanks @r2d4

k8s-ci-robot added the cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. label Aug 23, 2017

k8s-github-robot assigned justinsb and timothysc Aug 23, 2017

k8s-github-robot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. release-note-label-needed labels Aug 23, 2017

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luxas added this to the v1.8 milestone Aug 23, 2017

luxas assigned luxas and unassigned justinsb Aug 23, 2017

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andrewrynhard force-pushed the proxy-dns-phase branch from 46b22b8 to 989d9d9 Compare August 25, 2017 04:22

k8s-ci-robot added size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Aug 25, 2017

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andrewrynhard force-pushed the proxy-dns-phase branch from 5a56adf to 48c8423 Compare August 26, 2017 21:24

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kubeadm: add addons command

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luxas mentioned this pull request Sep 7, 2017

Apply ValidateMixedArguments to all kubeadm commands kubernetes/kubeadm#376

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andrewrynhard commented Aug 23, 2017 •

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