Revert Helm version bump

app/models/clusters/applications/knative.rb

@@ -8,7 +8,7 @@ module Clusters
 
       # This is required for helm version <= 2.10.x in order to support
       # Setting up CRDs
-      ISTIO_CRDS = 'http://cabnetworks.net/triggermesh-charts/istio-crds.yaml'.freeze
+      ISTIO_CRDS = 'https://storage.googleapis.com/triggermesh-charts/istio-crds.yaml'.freeze
 
       self.table_name = 'clusters_applications_knative'
 
@@ -37,10 +37,15 @@ module Clusters
           chart: chart,
           files: files,
           repository: REPOSITORY,
-          setargs: args
+          setargs: args,
+          script: install_script
         )
       end
 
+      def install_script
+        ['/usr/bin/kubectl', 'apply', '-f', ISTIO_CRDS]
+      end
+
       def client
         cluster&.platform_kubernetes&.kubeclient&.core_client
       end

lib/gitlab/kubernetes/helm.rb

 module Gitlab
   module Kubernetes
     module Helm
-      HELM_VERSION = '2.11.0'.freeze
+      HELM_VERSION = '2.7.2'.freeze
       NAMESPACE = 'gitlab-managed-apps'.freeze
       SERVICE_ACCOUNT = 'tiller'.freeze
       CLUSTER_ROLE_BINDING = 'tiller-admin'.freeze

lib/gitlab/kubernetes/helm/base_command.rb

@@ -17,6 +17,14 @@ module Gitlab
             apk add -U wget ca-certificates openssl git >/dev/null
             wget -q -O - https://kubernetes-helm.storage.googleapis.com/helm-v#{Gitlab::Kubernetes::Helm::HELM_VERSION}-linux-amd64.tar.gz | tar zxC /tmp >/dev/null
             mv /tmp/linux-amd64/helm /usr/bin/
+
+            wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub
+            wget -q https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.28-r0/glibc-2.28-r0.apk
+            apk add glibc-2.28-r0.apk > /dev/null
+            rm glibc-2.28-r0.apk
+            wget -q https://storage.googleapis.com/kubernetes-release/release/v1.11.0/bin/linux/amd64/kubectl
+            chmod +x kubectl
+            mv kubectl /usr/bin/
           HEREDOC
         end
 

lib/gitlab/kubernetes/helm/install_command.rb

@@ -4,9 +4,9 @@ module Gitlab
       class InstallCommand
         include BaseCommand
 
-        attr_reader :name, :files, :chart, :version, :repository, :setargs
+        attr_reader :name, :files, :chart, :version, :repository, :setargs, :script
 
-        def initialize(name:, chart:, files:, rbac:, version: nil, repository: nil, setargs: nil)
+        def initialize(name:, chart:, files:, rbac:, version: nil, repository: nil, setargs: nil, script: nil)
           @name = name
           @chart = chart
           @version = version
@@ -14,6 +14,7 @@ module Gitlab
           @files = files
           @repository = repository
           @setargs = setargs
+          @script = script
         end
 
         def generate_script
@@ -21,7 +22,8 @@ module Gitlab
             init_command,
             repository_command,
             repository_update_command,
-            script_command
+            script_command,
+            install_command
           ].compact.join("\n")
         end
 
@@ -43,12 +45,18 @@ module Gitlab
           'helm repo update >/dev/null' if repository
         end
 
-        def script_command
+        def install_command
           command = ['helm', 'install', chart] + install_command_flags
 
           command.shelljoin + " >/dev/null\n"
         end
 
+        def script_command
+          unless script.nil?
+            script.shelljoin + " >/dev/null\n"
+          end
+        end
+
         def install_command_flags
           name_flag      = ['--name', name]
           namespace_flag = ['--namespace', Gitlab::Kubernetes::Helm::NAMESPACE]

spec/support/shared_examples/helm_generated_script.rb

@@ -7,8 +7,16 @@ shared_examples 'helm commands' do
          echo http://mirror.clarkson.edu/alpine/v$ALPINE_VERSION/main >> /etc/apk/repositories
          echo http://mirror1.hs-esslingen.de/pub/Mirrors/alpine/v$ALPINE_VERSION/main >> /etc/apk/repositories
          apk add -U wget ca-certificates openssl git >/dev/null
-         wget -q -O - https://kubernetes-helm.storage.googleapis.com/helm-v2.11.0-linux-amd64.tar.gz | tar zxC /tmp >/dev/null
+         wget -q -O - https://kubernetes-helm.storage.googleapis.com/helm-v2.7.2-linux-amd64.tar.gz | tar zxC /tmp >/dev/null
          mv /tmp/linux-amd64/helm /usr/bin/
+
+         wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub
+         wget -q https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.28-r0/glibc-2.28-r0.apk
+         apk add glibc-2.28-r0.apk > /dev/null
+         rm glibc-2.28-r0.apk
+         wget -q https://storage.googleapis.com/kubernetes-release/release/v1.11.0/bin/linux/amd64/kubectl
+         chmod +x kubectl
+         mv kubectl /usr/bin/
       EOS
     end