Kubernetes support (#56)

* Add experimental support for Kubernetes

* Add documentation for Kubernetes

* Add golden tests for iterative/resource_runner.go

* Vendor dependencies to follow the project approach

* Fix provisioner code newlines to avoid tripping restyled

* Bump release Go version to 0.16

Failing to do so would produce build errors when dealing with M1
processors and sibling darwin_arm64 architectures.

    failed to build for darwin_arm64: # terraform-provider-iterative
    /opt/hostedtoolcache/go/1.14.15/x64/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
    /tmp/go-link-210080194/go.o: file not recognized: File format not recognized
    collect2: error: ld returned 1 exit status

* Standardize Kubernetes resource identifiers

* Retrieve the namespace from the kubeconfig context

  Previously, the namespace was hardcoded to the value
  "iterative"; now it uses the namespace specified on
  the provided Kubernetes configuration or the "default"
  namespace otherwise.

* Adapt the identifier generator for Kubernetes compatibility

  Identifiers were being generated through the time-based
  github.com/teris-io/shortid module, which uses a fixed
  64-character alphabet that includes uppercase letters and
  underscores. Unfortunately, that alphabet is rejected by
  Kubernetes because of these "disallowed" characters:
  kubernetes/kubernetes#71140

  Now identifiers are valid 64-bit base 36 [0-9a-z] strings
  generated with the system CSPRNG. Given that the previous 64^9
  identifier finite field is 1024 times smaller than the new 2^64
  one, this change should not pose any greater collision risk.

* Fix documentation blunder

* Remove vendor directory

* Restyle with gofmt

* Unstage outdated modifications

Revert stale clone-amis.go

Update README.md

Update README.md

Update README.md

Update README.md

Update README.md

Apply suggestions from code review

Apply suggestions from code review

* Merge changes from upstream README.md

* Skip deletion of nonexistent Kubernetes machines

* Replace the runner script interpreter process with exec

In order to transfer the graceful shutdown SIGTERM signal to
our NodeJS cml-runner script, we need to run the startup_script
with bash as the container entry point and replace the bash
interpreter with the node interpreter through an exec call so the
later can handle the container signals properly.

* Remove Kubernetes support from the documentation

* Fix formatting issues

Author: 0x2b3bfa0

.github/workflows/release.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.14
+          go-version: 1.16
 
       - name: Import GPG key
         id: import_gpg
@@ -44,4 +44,4 @@ jobs:
           args: release --rm-dist
         env:
           GPG_FINGERPRINT: ${{ steps.import_gpg.outputs.fingerprint }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

go.mod

@@ -8,11 +8,37 @@ require (
 	github.com/Azure/go-autorest/autorest v0.11.13 // indirect
 	github.com/Azure/go-autorest/autorest/azure/auth v0.5.3
 	github.com/Azure/go-autorest/autorest/to v0.4.0
+	github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c // indirect
+	github.com/ChrisTrenkamp/goxpath v0.0.0-20190607011252-c5096ec8773d // indirect
+	github.com/aohorodnyk/uid v1.1.0
+	github.com/apparentlymart/go-cidr v1.1.0 // indirect
+	github.com/apparentlymart/go-userdirs v0.0.0-20200915174352-b0c018a67c13 // indirect
+	github.com/apparentlymart/go-versions v1.0.1 // indirect
 	github.com/aws/aws-sdk-go v1.34.13
-	github.com/hashicorp/terraform v0.14.2 // indirect
+	github.com/gofrs/uuid v3.3.0+incompatible // indirect
+	github.com/hashicorp/aws-sdk-go-base v0.6.0 // indirect
+	github.com/hashicorp/go-getter v1.5.1 // indirect
+	github.com/hashicorp/hcl/v2 v2.8.0 // indirect
+	github.com/hashicorp/terraform v0.13.0-beta1 // indirect
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.4.0
+	github.com/hashicorp/terraform-svchost v0.0.0-20200729002733-f050f53b9734 // indirect
+	github.com/masterzen/simplexml v0.0.0-20190410153822-31eea3082786 // indirect
+	github.com/masterzen/winrm v0.0.0-20200615185753-c42b5136ff88 // indirect
+	github.com/mitchellh/gox v1.0.1 // indirect
+	github.com/packer-community/winrmcp v0.0.0-20180921211025-c76d91c1e7db // indirect
+	github.com/sebdah/goldie/v2 v2.5.3 // indirect
 	github.com/stretchr/testify v1.6.1
 	github.com/teris-io/shortid v0.0.0-20171029131806-771a37caa5cf
+	github.com/tombuildsstuff/giovanni v0.12.0 // indirect
 	github.com/zclconf/go-cty v1.7.0 // indirect
+	github.com/zclconf/go-cty-yaml v1.0.2 // indirect
 	golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0
+	golang.org/x/tools v0.0.0-20201028111035-eafbe7b904eb // indirect
+	google.golang.org/api v0.34.0 // indirect
+	gopkg.in/alessio/shellescape.v1 v1.0.0-20170105083845-52074bc9df61 // indirect
+	k8s.io/api v0.20.5
+	k8s.io/apimachinery v0.20.5
+	k8s.io/client-go v0.20.5
+	k8s.io/klog v0.4.0 // indirect
+	sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e // indirect
 )

go.sum

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"net"
 	"regexp"
 	"sort"
 	"strconv"
@@ -15,6 +16,8 @@ import (
 	"github.com/aws/aws-sdk-go/service/ec2"
 	"github.com/aws/aws-sdk-go/service/sts"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+
+	"terraform-provider-iterative/iterative/utils"
 )
 
 //ResourceMachineCreate creates AWS instance
@@ -414,3 +417,7 @@ func decodeAWSError(region string, err error) error {
 
 	return fmt.Errorf("Not able to decode: %s", err.Error())
 }
+
+func ResourceMachineLogs(ctx context.Context, d *schema.ResourceData, m interface{}) (string, error) {
+	return utils.RunCommand("journalctl --no-pager", 10*time.Second, net.JoinHostPort(d.Get("instance_ip").(string), "22"), "ubuntu", d.Get("ssh_private").(string))
+}

iterative/aws/provider.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"net"
 	"os"
 	"strings"
 	"time"
@@ -16,6 +17,8 @@ import (
 	"github.com/Azure/go-autorest/autorest/to"
 
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+
+	"terraform-provider-iterative/iterative/utils"
 )
 
 //ResourceMachineCreate creates AWS instance
@@ -392,3 +395,7 @@ func subscriptionID() (string, error) {
 
 	return "", errors.New("AZURE_SUBSCRIPTION_ID is not present")
 }
+
+func ResourceMachineLogs(ctx context.Context, d *schema.ResourceData, m interface{}) (string, error) {
+	return utils.RunCommand("journalctl --no-pager", 10*time.Second, net.JoinHostPort(d.Get("instance_ip").(string), "22"), "ubuntu", d.Get("ssh_private").(string))
+}