Upd dotnet6 agent mar2023 (#4191)

* Catch updating exception (#4082) * Node16 version updated to 16.17.1" (#4084) * Bump ubuntu image version to 20.04 (#4079) * Prevent creating host container network (#3788) * Prevent creating host container network * Remove redundant empty lines * Fix invalid knob value fetching * Update ContainerOperationProvider.cs Co-authored-by: Denis Rumyantsev <[email protected]> Co-authored-by: Kirill Ivlev <[email protected]> Co-authored-by: Konstantin Tyukalov <[email protected]> * Allow env.sh to accept additional env var names (#3339) The hard-coded list is not necessarily enough. This allows the caller to specify additional environment variables to write to .env. Co-authored-by: Konstantin Tyukalov <[email protected]> Co-authored-by: Kirill Ivlev <[email protected]> * Revert "Fix execution of scripts in variables (#4016)" (#4088) This reverts commit af5328b. * Add Ubuntu 18.04 (#3943) Co-authored-by: Kirill Ivlev <[email protected]> Co-authored-by: Konstantin Tyukalov <[email protected]> * Make agent update list of systems supporting .NET 6 periodically (#4081) * implemented logic to fetch net6.json from server every hour * added await keyword * Moved logic to set warning from ExecutionContext to JobRunner since InitializeJob method is not async * fixed issue with condition in Equals method of OperatingSystem class * small refactoring * net6.json must be read only if it was not fetched from server * refactored code of method "GetNet6SupportedSystems" * restored field net6SupportedSystems to reduce IO oprations and cover case when agent started but net6.json is not older than 1 hour Co-authored-by: Kirill Ivlev <[email protected]> * Retries to lock Services database (#4085) * retries to lock database * Decrease timeout + Add retry message Co-authored-by: Konstantin Tyukalov <[email protected]> Co-authored-by: Konstantin Tyukalov <[email protected]> * Fixed name of DockerAdditionalNetworkOptions Knob (#3888) Co-authored-by: Konstantin Tyukalov <[email protected]> * Format agent source code (#4101) * Run dotnet format * Remove extra semicolons * Fix SonarQube's "'Any()' should be used to test for emptiness" / Code Smell (#3404) * Add script to predict v2->v3 upgrade compatibility (#4092) * Add script to predict v2->v3 upgrade compatibility * Fix typo * Fixed another typo: frpom Co-authored-by: Kirill Ivlev <[email protected]> * Added strict boolean knob values (#4103) * Add ConvertToBooleanStrict * Add AsBooleanStrict for agent knobs * update build-job (#4110) * update build-job - added UseDotNet task for linux os * Switch EsrpCodeSigning from V1 to V2 returned back UseDotNet task condition * Set UseDotNet version to 6 on osx * added dotnet 3.1.x before unit tests on win x86 * fix dotnet host search (#4124) * fix dotnet host search - added performMultiLevelLookup * Added runtime to unitTests step * Changed patch version in semver of runtime * remove sdk and runtime from unitTests script * Fixed problem with .NET Core 3.1 installation * Added UseDotNet task in functionalTests Co-authored-by: Roman Shchukin <[email protected]> * Add option to skip rhel6 in pipeline and ci (#4121) * skipRhelRelease parameter added * skipRhelRelease parameter fixed * releaseRhelOnly parameter added * Logic of removing not filling lines from releaseNote * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Fix pipeline with test releaseNote job * Removed test logs * Added clear empty lines logic * Commented code for test. Test changes in pipeline * Removed test changes * skipRhelRelease parametr added to ci pipeline * Update dotnet to 3.1.32 (#4112) * DockerLogin retries (#4100) * DockerLogin retries - added changes from PR #3840 - fixed incorrect variables * DockerLogin retries - added step UseDotNet@2 * DockerLogin retries - added linux to UseDotNet task * Docker Login retries Implement retry into DockerLogin method * Implement feature flag for docker login retries * revert build-job back * Added retry for docker start * fix delay * update knob description * Update agent Docker methods - reworked Docker methods with retries behavior - changed InvokeWithRetryIfNonZero on to incapsulated logic method * - renamed local variable as is in ADO * Added docker retry behavior to docker version method Co-authored-by: Your Name <[email protected]> Co-authored-by: Kirill Ivlev <[email protected]> Co-authored-by: Merlyn Oppenheim <[email protected]> * Add the exact operation system version and environment to the telemetry (#4104) * Update TaskRunner.cs * Update build-job.yml * Added new variables to telemetry AgentName, MachineName, IsSelfHosted Co-authored-by: Kirill Ivlev <[email protected]> * Mingit version upgraded to 2.39.1 (#4126) * Fix agent lint errors (#4117) * Fix CA2000 error with secrets masker * Fix CA1711 for ServiceBootFlag * Fix CA2000 for JobRunner * Resolve CA2000 in StepHost * Resolve CA2000 in Windows service * Resolve CA2000 for WorkerCommandManager * Resove CA2000 for CodeCoverageCommands * Remove unused namespaces * Add fixture for SecretMasker tests * Change Fixtures -> Disposable * Use dispose pattern to fix errors * Formatting * Revert "Allow env.sh to accept additional env var names (#3339)" (#4143) This reverts commit 27e3d4e. * Bump azure pipelines task lib to 4.2.0 (#4155) * Add warning for deprecated runners (#4162) * Add warning for deprecated runners * Update strings.json * fix typo * Update NodeHandler.cs * FEATURE 2019014 - Gather telemetry on Agent Azure & Docker Container usage (#4166) * FEATURE 2019014 - Gather telemetry on Agent Azure & Docker Container usage * Re-write try-catch * Update TaskRunner.cs * cleanup * Distinguish AzureInstanceMetadata detection to a separate class --------- Co-authored-by: Kirill Ivlev <[email protected]> * Added legacy lib source for support on Ubuntu 22.04 (#4161) * Moved logic to drain queues after each task under knob "AGENT_DRAIN_QUEUES_AFTER_TASK" (#4176) * Added knob "DrainQueuesAfterTask" with default "false" * move logic to drain queues behind knob DrainQueuesAfterTask * added mocking of GetScopedEnvironment method in step execution context * added mocking of GetScopedEnvironment method in step execution context * changed default value for knob "AGENT_DRAIN_QUEUES_AFTER_TASK" to true * implementd AsBooleanStrict and check in JobRunner * Revert "implementd AsBooleanStrict and check in JobRunner" This reverts commit a1c0c67. * Reversed the knob * Add issue templates (#4154) * Add issue templates * Update config.yml * update templates * Update config.yml * Added knob to break pipeline unless user opt-in (#4165) * Added knob to force agent fail if user doesn't opt-in updates on unsupported OS * Resolved PR comments --------- Co-authored-by: Kirill Ivlev <[email protected]> * Merge remote-tracking branch 'origin/master' into upd_dotnet6_agent_mar2023 # Conflicts: # .azure-pipelines/build-job.yml # .azure-pipelines/pipeline.yml # .vsts.ci.yml # src/Agent.Sdk/Util/PlatformUtil.cs # src/Agent.Worker/JobRunner.cs # src/Agent.Worker/StepsRunner.cs # src/Agent.Worker/TaskRunner.cs # src/Common.props # src/Misc/layoutbin/installdependencies.sh # src/dev.sh * Localization update (#4187) * Added files for onelocbuild * Update localize-pipeline.yml for Azure Pipelines * Fixed typo in resource.resx path * Removed en-US * Update localize-pipeline.yml for Azure Pipelines * LEGO: check in for Localization to temporary branch. (#3246) * LEGO: check in for Localization to temporary branch. (#3268) * LEGO: check in for Localization to temporary branch. (#3265) * LEGO: check in for Localization to temporary branch. (#3279) * Temporary renamed localization folders * Renamed localization folders * Set up schedule and notifications for the localization pipeline (#3269) * [localization] Fixed localization pipeline issue with already localized strings replaced (#3332) * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 14646614 Localized file check-in by OneLocBuild Task * LEGO: check in for Localization to temporary branch. (#3363) Co-authored-by: csigs <[email protected]> * LEGO: check in for Localization to temporary branch. (#3364) Co-authored-by: csigs <[email protected]> * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 14919763 Localized file check-in by OneLocBuild Task * Create PR in OneLocBuild task only on third week of sprint (#3374) * Fix localization pipeline * Add missed change * Added option to disable PR creation * update localize pipeline (#3637) Co-authored-by: Ilya Kuleshov <[email protected]> * Localization update (#3612) * Removing Localize folder * RHEL/CentOS 7 Fix for Lets Encrypt Change (#3601) * Revert "RHEL/CentOS 7 Fix for Lets Encrypt Change (#3601)" This reverts commit 629921e. * Revert "Removing Localize folder" This reverts commit 33cb0ae. Co-authored-by: AndreyIvanov42 <[email protected]> Co-authored-by: kuleshovilya <[email protected]> Co-authored-by: Ilya Kuleshov <[email protected]> * Removed OneLocBuild folder * Move notifications about Agent Localization PR from Slack to MS Teams - Part 1 (#3744) * Include strings from Misc/src/layoutbin to LocProject file (#4021) * Update LocProject file * Update CopyOption for LocProject * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 18665127 (#4022) * Revert "Include strings from Misc/src/layoutbin to LocProject file (#4021)" This reverts commit 8f5c0c0. * Revert "Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 18665127 (#4022)" (#4023) This reverts commit b9c714b. * Include layoutbin into locproject * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 18680899 (#4028) * Juno: check in to lego/hb_5733438c-38c5-41ae-9557-a9d9754c4535_20221104175414554. (#4030) * Juno: check in to lego/hb_5733438c-38c5-41ae-9557-a9d9754c4535_20221105085259861. (#4031) * Juno: check in to lego/hb_5733438c-38c5-41ae-9557-a9d9754c4535_20221106085521421. (#4032) * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 18697046 (#4033) * Juno: check in to lego/hb_5733438c-38c5-41ae-9557-a9d9754c4535_20221107143113520. (#4039) * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 18706620 (#4044) * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 19415018 (#4163) * Juno: check in to lego/hb_5733438c-38c5-41ae-9557-a9d9754c4535_20230223095051399. (#4168) * Juno: check in to lego/hb_5733438c-38c5-41ae-9557-a9d9754c4535_20230224095040576. (#4170) * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 19476421 (#4179) * Update loc strings * Localized file check-in by OneLocBuild Task: Build definition ID 10944: Build ID 19476736 (#4181) * Juno: check in to lego/hb_5733438c-38c5-41ae-9557-a9d9754c4535_20230305095015478. (#4183) * Juno: check in to lego/hb_5733438c-38c5-41ae-9557-a9d9754c4535_20230306095225210. (#4184) * Removing Localize and OneLocBuild folder --------- Co-authored-by: Anatolii Bolshakov (Akvelon INC) <[email protected]> Co-authored-by: csigs <[email protected]> Co-authored-by: Egor Bryzgalov <[email protected]> Co-authored-by: Anatoly Bolshakov <[email protected]> Co-authored-by: csigs <[email protected]> Co-authored-by: Nikita Ezzhev <[email protected]> Co-authored-by: kuleshovilya <[email protected]> Co-authored-by: Ilya Kuleshov <[email protected]> Co-authored-by: AndreyIvanov42 <[email protected]> Co-authored-by: Denis Tikhomirov <[email protected]> Co-authored-by: KonstantinTyukalov <[email protected]> * Add "Mariner" to list of .NET 6 supporting systems (#4197) * Cover unsupported OS failure with FF (#4196) * Cover unsupported OS failure with FF * Update strings.json * Update JobRunner.cs * Update JobRunner.cs * Add knob to enable fetching net6.json file from GitHub (#4200) * Added knob "AGENT_ENABLE_FETCHING_NET6_LIST" * implemented knob EnableFetchingNet6List in function GetNet6SupportedSystems * Removed RuntimeKnobSource for EnableFetchingNet6List * removed logic which fails pipeline if there is some error occurred during checking if system supports .NET 6 * fixed typo * Update autoAssignABTT.yml (#4201) * Update AzureInstanceMetadataProvider.cs --------- Co-authored-by: Roman-Shchukin <[email protected]> Co-authored-by: Konstantin Tyukalov <[email protected]> Co-authored-by: Steve <[email protected]> Co-authored-by: Denis Rumyantsev <[email protected]> Co-authored-by: Rick Brown <[email protected]> Co-authored-by: Liliia Sabitova <[email protected]> Co-authored-by: Eric van Wijk <[email protected]> Co-authored-by: Sergey Koryshev <[email protected]> Co-authored-by: Konstantin Tyukalov <[email protected]> Co-authored-by: Rami <[email protected]> Co-authored-by: Martin <[email protected]> Co-authored-by: ivanduplenskikh <[email protected]> Co-authored-by: Roman Shchukin <[email protected]> Co-authored-by: Your Name <[email protected]> Co-authored-by: Merlyn Oppenheim <[email protected]> Co-authored-by: İsmayıl İsmayılov <[email protected]> Co-authored-by: Maksim Petrov <[email protected]> Co-authored-by: Anatolii Bolshakov (Akvelon INC) <[email protected]> Co-authored-by: csigs <[email protected]> Co-authored-by: Egor Bryzgalov <[email protected]> Co-authored-by: Anatoly Bolshakov <[email protected]> Co-authored-by: csigs <[email protected]> Co-authored-by: Nikita Ezzhev <[email protected]> Co-authored-by: kuleshovilya <[email protected]> Co-authored-by: Ilya Kuleshov <[email protected]> Co-authored-by: AndreyIvanov42 <[email protected]> Co-authored-by: Denis Tikhomirov <[email protected]> Co-authored-by: Maxim Zaytsev <[email protected]>
microsoft · Mar 16, 2023 · b66c6e7 · b66c6e7
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diff --git a/.github/ISSUE_TEMPLATE/bug.yml b/.github/ISSUE_TEMPLATE/bug.yml
@@ -0,0 +1,69 @@
+name: Bug
+description: File a bug report
+title: "[BUG]: "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this bug report!
+  - type: markdown
+    attributes:
+      value: |
+        ## Having issue with Tasks?
+        Log an issue at [Azure-Pipelines-Tasks](https://github.com/Microsoft/azure-pipelines-tasks). It contains all of the in-box tasks we ship with Azure-Pipelines/VSTS/TFS. If you're having issues with tasks in Build/Release jobs (e.g. unreasonable task failure) please log an issue there.
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened?
+      description: What did you do? What happened? What did you expect to happen?
+      placeholder: Put your description of the bug here.
+    validations:
+      required: true
+  - type: textarea
+    id: versions
+    attributes:
+      label: Versions
+      description: Specify the agent version and operation system version
+      placeholder: Azure DevOps version 2.100.1 / Windows 10
+    validations:
+      required: true
+  - type: checkboxes
+    id: environment-type
+    attributes:
+      label: Environment type (Please select at least one enviroment where you face this issue)
+      options:
+        - label: Self-Hosted
+        - label: Microsoft Hosted
+        - label: VMSS Pool
+        - label: Container
+  - type: dropdown
+    id: azure-devops-type
+    attributes:
+      label: Azure DevOps Server type
+      options:
+        - dev.azure.com (formerly visualstudio.com)
+        - Azure DevOps Server (Please specify exact version in the textbox below)
+    validations:
+      required: true
+  - type: input
+    id: azure-devops-server-datails
+    attributes:
+      label: Azure DevOps Server Version (if applicable)
+      placeholder: Azure DevOps Server 2019.1
+  - type: input
+    id: operation-system
+    attributes:
+      label: Operation system
+      placeholder: Windows 11, Ubuntu 20.04...
+  - type: input
+    id: version-control-type
+    attributes:
+      label: Version controll system
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant log output
+      description: |
+        Please copy and paste any relevant log output. You can find it in the _diag folder or on the pipelines logs on ADO side
+      render: shell
diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
@@ -0,0 +1,14 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Developer Community
+    url: https://developercommunity.visualstudio.com/AzureDevOps
+    about: For other Azure DevOps issues
+  - name: Tasks issue
+    url: https://github.com/microsoft/azure-pipelines-tasks/issues/new
+    about: If you have issues with tasks, please place your issues here.
+  - name: Security issue
+    url: https://github.com/microsoft/azure-pipelines-agent/security/policy
+    about: For security issues, please check our policy
+  - name: Issue with YAML
+    url: https://github.com/Microsoft/azure-pipelines-yaml
+    about: Over there we discuss YAML templates, samples for Azure Pipelines, and designs for upcoming YAML features. Also a place for the community to share best practices, ideas, and so on. File suggestions and issues here if they're specific to YAML pipelines.
diff --git a/.github/ISSUE_TEMPLATE/feature.yml b/.github/ISSUE_TEMPLATE/feature.yml
@@ -0,0 +1,22 @@
+name: Feature request
+description: Use this template to submit a feature request
+title: "[enhancement]: "
+labels: ["enhancement"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to raise a question
+  - type: markdown
+    attributes:
+      value: |
+        ## Having issue with Tasks?
+        Log an issue at [Azure-Pipelines-Tasks](https://github.com/Microsoft/azure-pipelines-tasks). It contains all of the in-box tasks we ship with Azure-Pipelines/VSTS/TFS. If you're having issues with tasks in Build/Release jobs (e.g. unreasonable task failure) please log an issue there.
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: Describe your feature request here
+      placeholder: Put your question here.
+      description: Please try to provide as much details as possible
+    validations:
+      required: true
diff --git a/.github/ISSUE_TEMPLATE/question.yml b/.github/ISSUE_TEMPLATE/question.yml
@@ -0,0 +1,61 @@
+name: Help needed
+description: Raise a question
+title: "[Question]: "
+labels: ["helpwanted"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to raise a question
+  - type: markdown
+    attributes:
+      value: |
+        ## Having issue with Tasks?
+        Log an issue at [Azure-Pipelines-Tasks](https://github.com/Microsoft/azure-pipelines-tasks). It contains all of the in-box tasks we ship with Azure-Pipelines/VSTS/TFS. If you're having issues with tasks in Build/Release jobs (e.g. unreasonable task failure) please log an issue there.
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: Describe your question
+      placeholder: Put your question here.
+    validations:
+      required: true
+  - type: textarea
+    id: versions
+    attributes:
+      label: Versions
+      description: Specify the agent version and operation system version
+      placeholder: Azure DevOps version 2.100.1 / Windows 10
+    validations:
+      required: true
+  - type: checkboxes
+    id: environment-type
+    attributes:
+      label: Environment type (Please select at least one enviroment where you face this issue)
+      options:
+        - label: Self-Hosted
+        - label: Microsoft Hosted
+        - label: VMSS Pool
+        - label: Container
+  - type: dropdown
+    id: azure-devops-type
+    attributes:
+      label: Azure DevOps Server type
+      options:
+        - dev.azure.com (formerly visualstudio.com)
+        - Azure DevOps Server (Please specify exact version in the textbox below)
+    validations:
+      required: true
+  - type: input
+    id: operation-system
+    attributes:
+      label: Operation system
+      placeholder: Windows 11, Ubuntu 20.04...
+  - type: input
+    id: version-control-type
+    attributes:
+      label: Version controll system
+  - type: input
+    id: azure-devops-server-datails
+    attributes:
+      label: Azure DevOps Server Version (if applicable)
+      placeholder: Azure DevOps Server 2019.1
diff --git a/.github/workflows/autoAssignABTT.yml b/.github/workflows/autoAssignABTT.yml
@@ -2,9 +2,8 @@ name: Auto Assign ABTT to Project Board
 
 on:
   issues:
-    types: [opened]
-env:
-  MY_GITHUB_TOKEN: ${{ secrets.ABTT_TOKEN }}
+    types:
+      - opened
 
 jobs:
   assign_one_project:
@@ -18,8 +17,9 @@ jobs:
         labels: |
           Area: Agent
           triage
+
     - name: "Assign issues with 'Area: ABTT' label to project board"
-      uses: srggrs/assign-one-project[email protected]
+      uses: actions/add-to-project@v0.4.1
       with:
-        project: 'https://github.com/orgs/microsoft/projects/48'
-        column_name: 'Backlog'
+        project-url: https://github.com/orgs/microsoft/projects/755
+        github-token: ${{ secrets.ABTT_TOKEN }}
diff --git a/src/Agent.Listener/net6.json b/src/Agent.Listener/net6.json
@@ -47,6 +47,14 @@
       }
     ]
   },
+  {
+    "id": "mariner",
+    "versions": [
+      {
+        "name": "1.0+"
+      }
+    ]
+  },
   {
     "id": "opensuse-leap",
     "versions": [

diff --git a/src/Agent.Sdk/Agent.Sdk.csproj b/src/Agent.Sdk/Agent.Sdk.csproj
@@ -9,6 +9,7 @@
     <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" Condition="$(CodeAnalysis)=='true'" />
     <PackageReference Include="Microsoft.Win32.Registry" Version="4.7.0" />
     <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="4.7.0" />
+    <PackageReference Include="System.ServiceProcess.ServiceController" Version="4.4.0" />
     <PackageReference Include="System.Text.Encoding.CodePages" Version="4.4.0" />
     <PackageReference Include="System.Security.Cryptography.Cng" Version="4.5.0" />
     <PackageReference Include="vss-api-netcore" Version="$(VssApiVersion)" />

diff --git a/src/Agent.Sdk/Knob/AgentKnobs.cs b/src/Agent.Sdk/Knob/AgentKnobs.cs
@@ -289,6 +289,20 @@ public class AgentKnobs
             "Disable agent downgrades. Upgrades will still be allowed.",
             new EnvironmentKnobSource("AZP_AGENT_DOWNGRADE_DISABLED"),
             new BuiltInDefaultKnobSource("false"));
+
+        public static readonly Knob AcknowledgeNoUpdates = new Knob(
+            nameof(AcknowledgeNoUpdates),
+            "Opt-in to continue using agent without updates on unsopperted OS",
+            new EnvironmentKnobSource("AGENT_ACKNOWLEDGE_NO_UPDATES"),
+            new RuntimeKnobSource("AGENT_ACKNOWLEDGE_NO_UPDATES"),
+            new BuiltInDefaultKnobSource("false"));
+
+        public static readonly Knob AgentFailOnIncompatibleOS = new Knob(
+            nameof(AgentFailOnIncompatibleOS),
+            "Allow agent to fail pipelines on incampatible OS",
+            new EnvironmentKnobSource("AGENT_FAIL_ON_INCOMPATIBLE_OS"),
+            new RuntimeKnobSource("AGENT_FAIL_ON_INCOMPATIBLE_OS"),
+            new BuiltInDefaultKnobSource("false"));
 
         public static readonly Knob PermissionsCheckFailsafe = new Knob(
             nameof(PermissionsCheckFailsafe),
@@ -402,11 +416,33 @@ public class AgentKnobs
             new EnvironmentKnobSource(ContinueAfterCancelProcessTreeKillAttemptVariableName),
             new BuiltInDefaultKnobSource("false"));
 
+        public const string VstsAgentNodeWarningsVariableName = "VSTSAGENT_ENABLE_NODE_WARNINGS";
+
+        public static readonly Knob AgentDeprecatedNodeWarnings = new Knob(
+            nameof(AgentDeprecatedNodeWarnings),
+            "If true shows warning on depricated node (6) tasks",
+            new RuntimeKnobSource(VstsAgentNodeWarningsVariableName),
+            new EnvironmentKnobSource(VstsAgentNodeWarningsVariableName),
+            new BuiltInDefaultKnobSource("false"));
+
         public static readonly Knob UseNode = new Knob(
             nameof(UseNode),
             "Forces the agent to use different version of Node if when configured runner is not available. Possible values: LTS - make agent use latest LTS version of Node; UPGRADE - make agent use next available version of Node",
             new RuntimeKnobSource("AGENT_USE_NODE"),
             new EnvironmentKnobSource("AGENT_USE_NODE"),
             new BuiltInDefaultKnobSource(string.Empty));
+
+        public static readonly Knob DisableDrainQueuesAfterTask = new Knob(
+            nameof(DisableDrainQueuesAfterTask),
+            "Forces the agent to disable draining queues after each task",
+            new RuntimeKnobSource("AGENT_DISABLE_DRAIN_QUEUES_AFTER_TASK"),
+            new EnvironmentKnobSource("AGENT_DISABLE_DRAIN_QUEUES_AFTER_TASK"),
+            new BuiltInDefaultKnobSource("false"));
+
+        public static readonly Knob EnableFetchingNet6List = new Knob(
+            nameof(EnableFetchingNet6List),
+            "Forces the agent to fetch list of .NET 6 supporting systems from server",
+            new EnvironmentKnobSource("AGENT_ENABLE_FETCHING_NET6_LIST"),
+            new BuiltInDefaultKnobSource("false"));
     }
 }
diff --git a/src/Agent.Sdk/Util/AzureInstanceMetadataProvider.cs b/src/Agent.Sdk/Util/AzureInstanceMetadataProvider.cs
@@ -0,0 +1,82 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.Net.Http;
+using System.Text;
+using System.Web;
+
+namespace Agent.Sdk.Util
+{
+    class AzureInstanceMetadataProvider : IDisposable
+    {
+        private HttpClient _client;
+        private const string _version = "2021-02-01";
+        private const string _azureMetadataEndpoint = "http://169.254.169.254/metadata";
+
+        public AzureInstanceMetadataProvider()
+        {
+            _client = new HttpClient();
+        }
+
+        public void Dispose()
+        {
+            _client?.Dispose();
+            _client = null;
+        }
+
+        private HttpRequestMessage BuildRequest(string url, Dictionary<string, string> parameters)
+        {
+            UriBuilder builder = new UriBuilder(url);
+
+            NameValueCollection queryParameters = HttpUtility.ParseQueryString(builder.Query);
+
+            if (!parameters.ContainsKey("api-version"))
+            {
+                parameters.Add("api-version", _version);
+            }
+
+            foreach (KeyValuePair<string, string> entry in parameters)
+            {
+                queryParameters[entry.Key] = entry.Value;
+            }
+
+            builder.Query = queryParameters.ToString();
+
+            HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, builder.Uri);
+            request.Headers.Add("Metadata", "true");
+
+            return request;
+        }
+
+        public string GetMetadata(string category, Dictionary<string, string> parameters)
+        {
+            if (_client == null)
+            {
+                throw new ObjectDisposedException(nameof(AzureInstanceMetadataProvider));
+            }
+
+            using HttpRequestMessage request = BuildRequest($"{_azureMetadataEndpoint}/{category}", parameters);
+            HttpResponseMessage response = _client.SendAsync(request).Result;
+
+            if (!response.IsSuccessStatusCode)
+            {
+                string errorText = response.Content.ReadAsStringAsync().Result;
+                throw new Exception($"Error retrieving metadata category { category }. Received status {response.StatusCode}: {errorText}");
+            }
+
+            return response.Content.ReadAsStringAsync().Result;
+        }
+
+        public bool HasMetadata()
+        {
+            try
+            {
+                return GetMetadata("instance", new Dictionary<string, string> { ["format"] = "text" }) != null;
+            }
+            catch (Exception)
+            {
+                return false;
+            }
+        }
+    }
+}