Use helm version loop instead of sleep in ClientCommand

lib/gitlab/kubernetes/helm/client_command.rb

@@ -14,7 +14,7 @@ module Gitlab
           # This is necessary to give Tiller time to restart after upgrade.
           # Ideally we'd be able to use --wait but cannot because of
           # https://github.com/helm/helm/issues/4855
-          'sleep 30'
+          'for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done'
         end
         def repository_command

spec/lib/gitlab/kubernetes/helm/install_command_spec.rb

@@ -27,7 +27,7 @@ describe Gitlab::Kubernetes::Helm::InstallCommand do
     let(:commands) do
       <<~EOS
       helm init --upgrade --tiller-namespace gitlab-managed-apps
-      sleep 30
+      for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
       helm repo add app-name https://repository.example.com
       helm repo update
       #{helm_install_comand}
@@ -56,7 +56,7 @@ describe Gitlab::Kubernetes::Helm::InstallCommand do
       let(:commands) do
         <<~EOS
         helm init --upgrade --tiller-namespace gitlab-managed-apps
-        sleep 30
+        for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
         helm repo add app-name https://repository.example.com
         helm repo update
         #{helm_install_command}
@@ -87,7 +87,7 @@ describe Gitlab::Kubernetes::Helm::InstallCommand do
       let(:commands) do
         <<~EOS
         helm init --upgrade --tiller-namespace gitlab-managed-apps
-        sleep 30
+        for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
         #{helm_install_command}
         EOS
       end
@@ -115,7 +115,7 @@ describe Gitlab::Kubernetes::Helm::InstallCommand do
       let(:commands) do
         <<~EOS
         helm init --upgrade --tiller-namespace gitlab-managed-apps
-        sleep 30
+        for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
         helm repo add app-name https://repository.example.com
         helm repo update
         #{helm_install_command}
@@ -139,7 +139,7 @@ describe Gitlab::Kubernetes::Helm::InstallCommand do
       let(:commands) do
         <<~EOS
         helm init --upgrade --tiller-namespace gitlab-managed-apps
-        sleep 30
+        for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
         helm repo add app-name https://repository.example.com
         helm repo update
         #{helm_install_command}
@@ -163,7 +163,7 @@ describe Gitlab::Kubernetes::Helm::InstallCommand do
       let(:commands) do
         <<~EOS
         helm init --upgrade --tiller-namespace gitlab-managed-apps
-        sleep 30
+        for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
         helm repo add app-name https://repository.example.com
         helm repo update
         #{helm_install_command}
@@ -189,7 +189,7 @@ describe Gitlab::Kubernetes::Helm::InstallCommand do
       let(:commands) do
         <<~EOS
         helm init --upgrade --tiller-namespace gitlab-managed-apps
-        sleep 30
+        for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
         helm repo add app-name https://repository.example.com
         helm repo update
         #{helm_install_command}

spec/lib/gitlab/kubernetes/helm/upgrade_command_spec.rb

@@ -22,7 +22,7 @@ describe Gitlab::Kubernetes::Helm::UpgradeCommand do
     let(:commands) do
       <<~EOS
          helm init --upgrade --tiller-namespace gitlab-managed-apps
-         sleep 30
+         for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
          helm upgrade #{application.name} #{application.chart} --tls --tls-ca-cert /data/helm/#{application.name}/config/ca.pem --tls-cert /data/helm/#{application.name}/config/cert.pem --tls-key /data/helm/#{application.name}/config/key.pem --reset-values --install --namespace #{namespace} -f /data/helm/#{application.name}/config/values.yaml
       EOS
     end
@@ -35,7 +35,7 @@ describe Gitlab::Kubernetes::Helm::UpgradeCommand do
       let(:commands) do
         <<~EOS
          helm init --upgrade --tiller-namespace gitlab-managed-apps
-         sleep 30
+         for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
          helm upgrade #{application.name} #{application.chart} --tls --tls-ca-cert /data/helm/#{application.name}/config/ca.pem --tls-cert /data/helm/#{application.name}/config/cert.pem --tls-key /data/helm/#{application.name}/config/key.pem --reset-values --install --namespace #{namespace} -f /data/helm/#{application.name}/config/values.yaml
         EOS
       end
@@ -59,7 +59,7 @@ describe Gitlab::Kubernetes::Helm::UpgradeCommand do
       let(:commands) do
         <<~EOS
            helm init --upgrade --tiller-namespace gitlab-managed-apps
-           sleep 30
+           for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
            helm repo add #{application.name} #{application.repository}
            helm upgrade #{application.name} #{application.chart} --tls --tls-ca-cert /data/helm/#{application.name}/config/ca.pem --tls-cert /data/helm/#{application.name}/config/cert.pem --tls-key /data/helm/#{application.name}/config/key.pem --reset-values --install --namespace #{namespace} -f /data/helm/#{application.name}/config/values.yaml
         EOS
@@ -74,7 +74,7 @@ describe Gitlab::Kubernetes::Helm::UpgradeCommand do
       let(:commands) do
         <<~EOS
          helm init --upgrade --tiller-namespace gitlab-managed-apps
-         sleep 30
+         for i in $(seq 1 30); do helm version && break; sleep 1s; echo "Retrying ($i)..."; done
          helm upgrade #{application.name} #{application.chart} --reset-values --install --namespace #{namespace} -f /data/helm/#{application.name}/config/values.yaml
         EOS
       end