Remove deploy_boards_dedupe_instances feature flag

Rollout bug fix to self managed instances
Update documentation and specs

config/feature_flags/development/deploy_boards_dedupe_instances.yml

----
-name: deploy_boards_dedupe_instances
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/40768
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/258214
-type: development
-group: group::progressive delivery
-default_enabled: false

doc/user/project/deploy_boards.md

@@ -41,9 +41,9 @@ knowledge. In particular, you should be familiar with:
 - [Kubernetes namespaces](https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/)
 - [Kubernetes canary deployments](https://kubernetes.io/docs/concepts/cluster-administration/manage-deployment/#canary-deployments)
 
-NOTE: **Note:**
-Apps that consist of multiple deployments are shown as duplicates on the deploy board.
-Follow [this issue](https://gitlab.com/gitlab-org/gitlab/-/issues/8463) for details.
+In GitLab 13.5 and earlier, apps that consist of multiple deployments are shown as
+duplicates on the deploy board. This is [fixed](https://gitlab.com/gitlab-org/gitlab/-/issues/8463)
+in GitLab 13.6.
 
 ## Use cases
 

ee/changelogs/unreleased/fix-deploy-board-multi-deployment-pods.yml

+---
+title: Fix duplicate instances in deploy boards when multiple deployments have the same track
+merge_request: 46374
+author:
+type: fixed

ee/lib/gitlab/kubernetes/rollout_status.rb

@@ -54,13 +54,7 @@ module Gitlab
       def initialize(deployments, pods: [], ingresses: [], status: :found)
         @status       = status
         @deployments  = deployments
-
-        @instances = if ::Feature.enabled?(:deploy_boards_dedupe_instances)
-                       RolloutInstances.new(deployments, pods).pod_instances
-                     else
-                       deployments.flat_map(&:instances)
-                     end
-
+        @instances = RolloutInstances.new(deployments, pods).pod_instances
         @canary_ingress = ingresses.find(&:canary?)
 
         @completion =

ee/spec/lib/gitlab/kubernetes/rollout_status_spec.rb

@@ -30,257 +30,237 @@ RSpec.describe Gitlab::Kubernetes::RolloutStatus do
 
   subject(:rollout_status) { described_class.from_deployments(*specs, pods_attrs: pods, ingresses: ingresses) }
 
-  shared_examples 'rollout status' do
-    describe '#deployments' do
-      it 'stores the deployments' do
-        expect(rollout_status.deployments).to be_kind_of(Array)
-        expect(rollout_status.deployments.size).to eq(2)
-        expect(rollout_status.deployments.first).to be_kind_of(::Gitlab::Kubernetes::Deployment)
-      end
+  describe '#deployments' do
+    it 'stores the deployments' do
+      expect(rollout_status.deployments).to be_kind_of(Array)
+      expect(rollout_status.deployments.size).to eq(2)
+      expect(rollout_status.deployments.first).to be_kind_of(::Gitlab::Kubernetes::Deployment)
     end
+  end
+
+  describe '#instances' do
+    context 'for stable track' do
+      let(:track) { "any" }
 
-    describe '#instances' do
-      context 'for stable track' do
-        let(:track) { "any" }
-
-        let(:pods) do
-          create_pods(name: "one", count: 3, track: 'stable') + create_pods(name: "two", count: 3, track: "any")
-        end
-
-        it 'stores the union of deployment instances' do
-          expected = [
-            { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'any', stable: false },
-            { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'any', stable: false },
-            { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'any', stable: false },
-            { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true },
-            { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true },
-            { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true }
-          ]
-
-          expect(rollout_status.instances).to eq(expected)
-        end
+      let(:pods) do
+        create_pods(name: "one", count: 3, track: 'stable') + create_pods(name: "two", count: 3, track: "any")
       end
 
-      context 'for stable track' do
-        let(:track) { 'canary' }
-
-        let(:pods) do
-          create_pods(name: "one", count: 3, track: 'stable') + create_pods(name: "two", count: 3, track: track)
-        end
-
-        it 'sorts stable instances last' do
-          expected = [
-            { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'canary', stable: false },
-            { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'canary', stable: false },
-            { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'canary', stable: false },
-            { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true },
-            { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true },
-            { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true }
-          ]
-
-          expect(rollout_status.instances).to eq(expected)
-        end
+      it 'stores the union of deployment instances' do
+        expected = [
+          { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'any', stable: false },
+          { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'any', stable: false },
+          { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'any', stable: false },
+          { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true },
+          { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true },
+          { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true }
+        ]
+
+        expect(rollout_status.instances).to eq(expected)
       end
     end
 
-    describe '#completion' do
-      subject { rollout_status.completion }
+    context 'for stable track' do
+      let(:track) { 'canary' }
 
-      context 'when all instances are finished' do
-        let(:track) { 'canary' }
+      let(:pods) do
+        create_pods(name: "one", count: 3, track: 'stable') + create_pods(name: "two", count: 3, track: track)
+      end
 
-        it { is_expected.to eq(100) }
+      it 'sorts stable instances last' do
+        expected = [
+          { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'canary', stable: false },
+          { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'canary', stable: false },
+          { status: 'running', pod_name: "two", tooltip: 'two (Running)', track: 'canary', stable: false },
+          { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true },
+          { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true },
+          { status: 'running', pod_name: "one", tooltip: 'one (Running)', track: 'stable', stable: true }
+        ]
+
+        expect(rollout_status.instances).to eq(expected)
       end
+    end
+  end
 
-      context 'when half of the instances are finished' do
-        let(:track) { "canary" }
+  describe '#completion' do
+    subject { rollout_status.completion }
 
-        let(:pods) do
-          create_pods(name: "one", count: 3, track: 'stable') + create_pods(name: "two", count: 3, track: track, status: "Pending")
-        end
+    context 'when all instances are finished' do
+      let(:track) { 'canary' }
 
-        let(:specs) { specs_half_finished }
+      it { is_expected.to eq(100) }
+    end
 
-        it { is_expected.to eq(50) }
+    context 'when half of the instances are finished' do
+      let(:track) { "canary" }
+
+      let(:pods) do
+        create_pods(name: "one", count: 3, track: 'stable') + create_pods(name: "two", count: 3, track: track, status: "Pending")
       end
 
-      context 'with one deployment' do
-        it 'sets the completion percentage when a deployment has more running pods than desired' do
-          deployments = [kube_deployment(name: 'one', track: 'one', replicas: 2)]
-          pods = create_pods(name: 'one', track: 'one', count: 3)
-          rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
+      let(:specs) { specs_half_finished }
 
-          expect(rollout_status.completion).to eq(100)
-        end
-      end
+      it { is_expected.to eq(50) }
+    end
 
-      context 'with two deployments on different tracks' do
-        it 'sets the completion percentage when all pods are complete' do
-          deployments = [
-            kube_deployment(name: 'one', track: 'one', replicas: 2),
-            kube_deployment(name: 'two', track: 'two', replicas: 2)
-          ]
-          pods = create_pods(name: 'one', track: 'one', count: 2) + create_pods(name: 'two', track: 'two', count: 2)
-          rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
-
-          expect(rollout_status.completion).to eq(100)
-        end
-      end
+    context 'with one deployment' do
+      it 'sets the completion percentage when a deployment has more running pods than desired' do
+        deployments = [kube_deployment(name: 'one', track: 'one', replicas: 2)]
+        pods = create_pods(name: 'one', track: 'one', count: 3)
+        rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
 
-      context 'with two deployments that both have track set to "stable"' do
-        it 'sets the completion percentage when all pods are complete' do
-          deployments = [
-            kube_deployment(name: 'one', track: 'stable', replicas: 2),
-            kube_deployment(name: 'two', track: 'stable', replicas: 2)
-          ]
-          pods = create_pods(name: 'one', track: 'stable', count: 2) + create_pods(name: 'two', track: 'stable', count: 2)
-          rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
-
-          expect(rollout_status.completion).to eq(100)
-        end
-
-        it 'sets the completion percentage when no pods are complete' do
-          deployments = [
-            kube_deployment(name: 'one', track: 'stable', replicas: 3),
-            kube_deployment(name: 'two', track: 'stable', replicas: 7)
-          ]
-          rollout_status = described_class.from_deployments(*deployments, pods_attrs: [])
-
-          expect(rollout_status.completion).to eq(0)
-        end
+        expect(rollout_status.completion).to eq(100)
       end
+    end
+
+    context 'with two deployments on different tracks' do
+      it 'sets the completion percentage when all pods are complete' do
+        deployments = [
+          kube_deployment(name: 'one', track: 'one', replicas: 2),
+          kube_deployment(name: 'two', track: 'two', replicas: 2)
+        ]
+        pods = create_pods(name: 'one', track: 'one', count: 2) + create_pods(name: 'two', track: 'two', count: 2)
+        rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
 
-      context 'with two deployments, one with track set to "stable" and one with no track label' do
-        it 'sets the completion percentage when all pods are complete' do
-          deployments = [
-            kube_deployment(name: 'one', track: 'stable', replicas: 3),
-            kube_deployment(name: 'two', track: nil, replicas: 3)
-          ]
-          pods = create_pods(name: 'one', track: 'stable', count: 3) + create_pods(name: 'two', track: nil, count: 3)
-          rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
-
-          expect(rollout_status.completion).to eq(100)
-        end
-
-        it 'sets the completion percentage when no pods are complete' do
-          deployments = [
-            kube_deployment(name: 'one', track: 'stable', replicas: 1),
-            kube_deployment(name: 'two', track: nil, replicas: 1)
-          ]
-          rollout_status = described_class.from_deployments(*deployments, pods_attrs: [])
-
-          expect(rollout_status.completion).to eq(0)
-        end
+        expect(rollout_status.completion).to eq(100)
       end
     end
 
-    describe '#complete?' do
-      subject { rollout_status.complete? }
-
-      context 'when all instances are finished' do
-        let(:track) { 'canary' }
+    context 'with two deployments that both have track set to "stable"' do
+      it 'sets the completion percentage when all pods are complete' do
+        deployments = [
+          kube_deployment(name: 'one', track: 'stable', replicas: 2),
+          kube_deployment(name: 'two', track: 'stable', replicas: 2)
+        ]
+        pods = create_pods(name: 'one', track: 'stable', count: 2) + create_pods(name: 'two', track: 'stable', count: 2)
+        rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
 
-        it { is_expected.to be_truthy }
+        expect(rollout_status.completion).to eq(100)
       end
 
-      context 'when half of the instances are finished' do
-        let(:track) { "canary" }
+      it 'sets the completion percentage when no pods are complete' do
+        deployments = [
+          kube_deployment(name: 'one', track: 'stable', replicas: 3),
+          kube_deployment(name: 'two', track: 'stable', replicas: 7)
+        ]
+        rollout_status = described_class.from_deployments(*deployments, pods_attrs: [])
 
-        let(:pods) do
-          create_pods(name: "one", count: 3, track: 'stable') + create_pods(name: "two", count: 3, track: track, status: "Pending")
-        end
+        expect(rollout_status.completion).to eq(0)
+      end
 
-        let(:specs) { specs_half_finished }
+      it 'sets the completion percentage when a quarter of the pods are complete' do
+        deployments = [
+          kube_deployment(name: 'one', track: 'stable', replicas: 6),
+          kube_deployment(name: 'two', track: 'stable', replicas: 2)
+        ]
+        pods = create_pods(name: 'one', track: 'stable', count: 2)
+        rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
 
-        it { is_expected.to be_falsy}
+        expect(rollout_status.completion).to eq(25)
       end
     end
 
-    describe '#found?' do
-      context 'when the specs are passed' do
-        it { is_expected.to be_found }
+    context 'with two deployments, one with track set to "stable" and one with no track label' do
+      it 'sets the completion percentage when all pods are complete' do
+        deployments = [
+          kube_deployment(name: 'one', track: 'stable', replicas: 3),
+          kube_deployment(name: 'two', track: nil, replicas: 3)
+        ]
+        pods = create_pods(name: 'one', track: 'stable', count: 3) + create_pods(name: 'two', track: nil, count: 3)
+        rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
+
+        expect(rollout_status.completion).to eq(100)
       end
 
-      context 'when list of specs is empty' do
-        let(:specs) { [] }
+      it 'sets the completion percentage when no pods are complete' do
+        deployments = [
+          kube_deployment(name: 'one', track: 'stable', replicas: 1),
+          kube_deployment(name: 'two', track: nil, replicas: 1)
+        ]
+        rollout_status = described_class.from_deployments(*deployments, pods_attrs: [])
 
-        it { is_expected.not_to be_found }
+        expect(rollout_status.completion).to eq(0)
       end
-    end
 
-    describe '.loading' do
-      subject { described_class.loading }
+      it 'sets the completion percentage when a third of the pods are complete' do
+        deployments = [
+          kube_deployment(name: 'one', track: 'stable', replicas: 2),
+          kube_deployment(name: 'two', track: nil, replicas: 7)
+        ]
+        pods = create_pods(name: 'one', track: 'stable', count: 2) + create_pods(name: 'two', track: nil, count: 1)
+        rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
 
-      it { is_expected.to be_loading }
+        expect(rollout_status.completion).to eq(33)
+      end
     end
+  end
 
-    describe '#not_found?' do
-      context 'when the specs are passed' do
-        it { is_expected.not_to be_not_found }
-      end
+  describe '#complete?' do
+    subject { rollout_status.complete? }
 
-      context 'when list of specs is empty' do
-        let(:specs) { [] }
+    context 'when all instances are finished' do
+      let(:track) { 'canary' }
 
-        it { is_expected.to be_not_found }
-      end
+      it { is_expected.to be_truthy }
     end
 
-    describe '#canary_ingress_exists?' do
-      context 'when canary ingress exists' do
-        let(:ingresses) { [kube_ingress(track: :canary)] }
+    context 'when half of the instances are finished' do
+      let(:track) { "canary" }
 
-        it 'returns true' do
-          expect(rollout_status.canary_ingress_exists?).to eq(true)
-        end
+      let(:pods) do
+        create_pods(name: "one", count: 3, track: 'stable') + create_pods(name: "two", count: 3, track: track, status: "Pending")
       end
 
-      context 'when canary ingress does not exist' do
-        let(:ingresses) { [kube_ingress(track: :stable)] }
+      let(:specs) { specs_half_finished }
 
-        it 'returns false' do
-          expect(rollout_status.canary_ingress_exists?).to eq(false)
-        end
-      end
+      it { is_expected.to be_falsy}
     end
   end
 
-  context 'deploy_boards_dedupe_instances is disabled' do
-    before do
-      stub_feature_flags(deploy_boards_dedupe_instances: false)
+  describe '#found?' do
+    context 'when the specs are passed' do
+      it { is_expected.to be_found }
     end
 
-    it_behaves_like 'rollout status'
+    context 'when list of specs is empty' do
+      let(:specs) { [] }
+
+      it { is_expected.not_to be_found }
+    end
+  end
+
+  describe '.loading' do
+    subject { described_class.loading }
+
+    it { is_expected.to be_loading }
   end
 
-  context 'deploy_boards_dedupe_instances is enabled' do
-    before do
-      stub_feature_flags(deploy_boards_dedupe_instances: true)
+  describe '#not_found?' do
+    context 'when the specs are passed' do
+      it { is_expected.not_to be_not_found }
     end
 
-    it_behaves_like 'rollout status'
+    context 'when list of specs is empty' do
+      let(:specs) { [] }
 
-    describe '#completion' do
-      it 'sets the completion percentage when a quarter of the pods are complete' do
-        deployments = [
-          kube_deployment(name: 'one', track: 'stable', replicas: 6),
-          kube_deployment(name: 'two', track: 'stable', replicas: 2)
-        ]
-        pods = create_pods(name: 'one', track: 'stable', count: 2)
-        rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
+      it { is_expected.to be_not_found }
+    end
+  end
 
-        expect(rollout_status.completion).to eq(25)
+  describe '#canary_ingress_exists?' do
+    context 'when canary ingress exists' do
+      let(:ingresses) { [kube_ingress(track: :canary)] }
+
+      it 'returns true' do
+        expect(rollout_status.canary_ingress_exists?).to eq(true)
       end
+    end
 
-      it 'sets the completion percentage when a third of the pods are complete' do
-        deployments = [
-          kube_deployment(name: 'one', track: 'stable', replicas: 2),
-          kube_deployment(name: 'two', track: nil, replicas: 7)
-        ]
-        pods = create_pods(name: 'one', track: 'stable', count: 2) + create_pods(name: 'two', track: nil, count: 1)
-        rollout_status = described_class.from_deployments(*deployments, pods_attrs: pods)
+    context 'when canary ingress does not exist' do
+      let(:ingresses) { [kube_ingress(track: :stable)] }
 
-        expect(rollout_status.completion).to eq(33)
+      it 'returns false' do
+        expect(rollout_status.canary_ingress_exists?).to eq(false)
       end
     end
   end