Deploying the same agent in different target regions for the same account fails #1263

Description

@transform-agent

Description

I have setup an agent harness and added a second target region for the same account. Deployment to the first region succeeds. When deploying to the second region the deployment fails.
When running the CLI in TUI mode, error message is not returned in the UI (but is present in the log).

[09:10:36] Error: CDK deploy failed: ❌ �[1mAgentCore-HarnessTest-eu�[22m failed: DeploymentError: The stack named AgentCore-HarnessTest-eu failed creation, it may need to be manually deleted from the AWS console: ROLLBACK_COMPLETE: Resource handler returned message: "Resource of type 'AWS::IAM::Role' with identifier 'HarnessTest_MyHarness' already exists." (RequestToken: a67da7f0-e57d-39b6-cd35-f086e9018be4, HandlerErrorCode: AlreadyExists)
[09:10:36] Status: FAILED

Steps to Reproduce

  1. Create a new agent harness
  2. ensure you have two targets in agentcore/aws-targets.json for same account different regions
  3. deploy the agent in one target
  4. deploy the agent in another target

Expected Behavior

Deployment succeeds

Actual Behavior

Deployment fails because IAM role already exists

CLI Version

No response

Operating System

macOS

Additional Context

No response

Metadata

Metadata

Assignees

No one assigned

    Labels

    bugSomething isn't working

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

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      None yet

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
      }
      } catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
      })();
      (function(){
      try {
      var __m = "github.com";
      var __re = new RegExp('^' + "github\\.com" + '
      
      Skip to content

      Deploying the same agent in different target regions for the same account fails #1263

      Description

      @transform-agent

      Description

      I have setup an agent harness and added a second target region for the same account. Deployment to the first region succeeds. When deploying to the second region the deployment fails.
      When running the CLI in TUI mode, error message is not returned in the UI (but is present in the log).

      [09:10:36] Error: CDK deploy failed: ❌ �[1mAgentCore-HarnessTest-eu�[22m failed: DeploymentError: The stack named AgentCore-HarnessTest-eu failed creation, it may need to be manually deleted from the AWS console: ROLLBACK_COMPLETE: Resource handler returned message: "Resource of type 'AWS::IAM::Role' with identifier 'HarnessTest_MyHarness' already exists." (RequestToken: a67da7f0-e57d-39b6-cd35-f086e9018be4, HandlerErrorCode: AlreadyExists)
      [09:10:36] Status: FAILED
      

      Steps to Reproduce

      1. Create a new agent harness
      2. ensure you have two targets in agentcore/aws-targets.json for same account different regions
      3. deploy the agent in one target
      4. deploy the agent in another target

      Expected Behavior

      Deployment succeeds

      Actual Behavior

      Deployment fails because IAM role already exists

      CLI Version

      No response

      Operating System

      macOS

      Additional Context

      No response

      Metadata

      Metadata

      Assignees

      No one assigned

        Labels

        bugSomething isn't working

        Type

        No type

        Projects

        No projects

          Milestone

          No milestone

          Relationships

          None yet

          Development

          No branches or pull requests

          Issue actions

          , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
          Skip to content

          Deploying the same agent in different target regions for the same account fails #1263

          Description

          @transform-agent

          Description

          I have setup an agent harness and added a second target region for the same account. Deployment to the first region succeeds. When deploying to the second region the deployment fails.
          When running the CLI in TUI mode, error message is not returned in the UI (but is present in the log).

          [09:10:36] Error: CDK deploy failed: ❌ �[1mAgentCore-HarnessTest-eu�[22m failed: DeploymentError: The stack named AgentCore-HarnessTest-eu failed creation, it may need to be manually deleted from the AWS console: ROLLBACK_COMPLETE: Resource handler returned message: "Resource of type 'AWS::IAM::Role' with identifier 'HarnessTest_MyHarness' already exists." (RequestToken: a67da7f0-e57d-39b6-cd35-f086e9018be4, HandlerErrorCode: AlreadyExists)
          [09:10:36] Status: FAILED
          

          Steps to Reproduce

          1. Create a new agent harness
          2. ensure you have two targets in agentcore/aws-targets.json for same account different regions
          3. deploy the agent in one target
          4. deploy the agent in another target

          Expected Behavior

          Deployment succeeds

          Actual Behavior

          Deployment fails because IAM role already exists

          CLI Version

          No response

          Operating System

          macOS

          Additional Context

          No response

          Metadata

          Metadata

          Assignees

          No one assigned

            Labels

            bugSomething isn't working

            Type

            No type

            Projects

            No projects

              Milestone

              No milestone

              Relationships

              None yet

              Development

              No branches or pull requests

              Issue actions

              , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
              Skip to content

              Deploying the same agent in different target regions for the same account fails #1263

              Description

              @transform-agent

              Description

              I have setup an agent harness and added a second target region for the same account. Deployment to the first region succeeds. When deploying to the second region the deployment fails.
              When running the CLI in TUI mode, error message is not returned in the UI (but is present in the log).

              [09:10:36] Error: CDK deploy failed: ❌ �[1mAgentCore-HarnessTest-eu�[22m failed: DeploymentError: The stack named AgentCore-HarnessTest-eu failed creation, it may need to be manually deleted from the AWS console: ROLLBACK_COMPLETE: Resource handler returned message: "Resource of type 'AWS::IAM::Role' with identifier 'HarnessTest_MyHarness' already exists." (RequestToken: a67da7f0-e57d-39b6-cd35-f086e9018be4, HandlerErrorCode: AlreadyExists)
              [09:10:36] Status: FAILED
              

              Steps to Reproduce

              1. Create a new agent harness
              2. ensure you have two targets in agentcore/aws-targets.json for same account different regions
              3. deploy the agent in one target
              4. deploy the agent in another target

              Expected Behavior

              Deployment succeeds

              Actual Behavior

              Deployment fails because IAM role already exists

              CLI Version

              No response

              Operating System

              macOS

              Additional Context

              No response

              Metadata

              Metadata

              Assignees

              No one assigned

                Labels

                bugSomething isn't working

                Type

                No type

                Projects

                No projects

                  Milestone

                  No milestone

                  Relationships

                  None yet

                  Development

                  No branches or pull requests

                  Issue actions

                  , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
                  Skip to content

                  Deploying the same agent in different target regions for the same account fails #1263

                  Description

                  @transform-agent

                  Description

                  I have setup an agent harness and added a second target region for the same account. Deployment to the first region succeeds. When deploying to the second region the deployment fails.
                  When running the CLI in TUI mode, error message is not returned in the UI (but is present in the log).

                  [09:10:36] Error: CDK deploy failed: ❌ �[1mAgentCore-HarnessTest-eu�[22m failed: DeploymentError: The stack named AgentCore-HarnessTest-eu failed creation, it may need to be manually deleted from the AWS console: ROLLBACK_COMPLETE: Resource handler returned message: "Resource of type 'AWS::IAM::Role' with identifier 'HarnessTest_MyHarness' already exists." (RequestToken: a67da7f0-e57d-39b6-cd35-f086e9018be4, HandlerErrorCode: AlreadyExists)
                  [09:10:36] Status: FAILED
                  

                  Steps to Reproduce

                  1. Create a new agent harness
                  2. ensure you have two targets in agentcore/aws-targets.json for same account different regions
                  3. deploy the agent in one target
                  4. deploy the agent in another target

                  Expected Behavior

                  Deployment succeeds

                  Actual Behavior

                  Deployment fails because IAM role already exists

                  CLI Version

                  No response

                  Operating System

                  macOS

                  Additional Context

                  No response

                  Metadata

                  Metadata

                  Assignees

                  No one assigned

                    Labels

                    bugSomething isn't working

                    Type

                    No type

                    Projects

                    No projects

                      Milestone

                      No milestone

                      Relationships

                      None yet

                      Development

                      No branches or pull requests

                      Issue actions

                      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
                      Skip to content

                      Deploying the same agent in different target regions for the same account fails #1263

                      Description

                      @transform-agent

                      Description

                      I have setup an agent harness and added a second target region for the same account. Deployment to the first region succeeds. When deploying to the second region the deployment fails.
                      When running the CLI in TUI mode, error message is not returned in the UI (but is present in the log).

                      [09:10:36] Error: CDK deploy failed: ❌ �[1mAgentCore-HarnessTest-eu�[22m failed: DeploymentError: The stack named AgentCore-HarnessTest-eu failed creation, it may need to be manually deleted from the AWS console: ROLLBACK_COMPLETE: Resource handler returned message: "Resource of type 'AWS::IAM::Role' with identifier 'HarnessTest_MyHarness' already exists." (RequestToken: a67da7f0-e57d-39b6-cd35-f086e9018be4, HandlerErrorCode: AlreadyExists)
                      [09:10:36] Status: FAILED
                      

                      Steps to Reproduce

                      1. Create a new agent harness
                      2. ensure you have two targets in agentcore/aws-targets.json for same account different regions
                      3. deploy the agent in one target
                      4. deploy the agent in another target

                      Expected Behavior

                      Deployment succeeds

                      Actual Behavior

                      Deployment fails because IAM role already exists

                      CLI Version

                      No response

                      Operating System

                      macOS

                      Additional Context

                      No response

                      Metadata

                      Metadata

                      Assignees

                      No one assigned

                        Labels

                        bugSomething isn't working

                        Type

                        No type

                        Projects

                        No projects

                          Milestone

                          No milestone

                          Relationships

                          None yet

                          Development

                          No branches or pull requests

                          Issue actions

                          , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
                          Skip to content

                          Deploying the same agent in different target regions for the same account fails #1263

                          Description

                          @transform-agent

                          Description

                          I have setup an agent harness and added a second target region for the same account. Deployment to the first region succeeds. When deploying to the second region the deployment fails.
                          When running the CLI in TUI mode, error message is not returned in the UI (but is present in the log).

                          [09:10:36] Error: CDK deploy failed: ❌ �[1mAgentCore-HarnessTest-eu�[22m failed: DeploymentError: The stack named AgentCore-HarnessTest-eu failed creation, it may need to be manually deleted from the AWS console: ROLLBACK_COMPLETE: Resource handler returned message: "Resource of type 'AWS::IAM::Role' with identifier 'HarnessTest_MyHarness' already exists." (RequestToken: a67da7f0-e57d-39b6-cd35-f086e9018be4, HandlerErrorCode: AlreadyExists)
                          [09:10:36] Status: FAILED
                          

                          Steps to Reproduce

                          1. Create a new agent harness
                          2. ensure you have two targets in agentcore/aws-targets.json for same account different regions
                          3. deploy the agent in one target
                          4. deploy the agent in another target

                          Expected Behavior

                          Deployment succeeds

                          Actual Behavior

                          Deployment fails because IAM role already exists

                          CLI Version

                          No response

                          Operating System

                          macOS

                          Additional Context

                          No response

                          Metadata

                          Metadata

                          Assignees

                          No one assigned

                            Labels

                            bugSomething isn't working

                            Type

                            No type

                            Projects

                            No projects

                              Milestone

                              No milestone

                              Relationships

                              None yet

                              Development

                              No branches or pull requests

                              Issue actions

                              , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
                              Skip to content

                              Deploying the same agent in different target regions for the same account fails #1263

                              Description

                              @transform-agent

                              Description

                              I have setup an agent harness and added a second target region for the same account. Deployment to the first region succeeds. When deploying to the second region the deployment fails.
                              When running the CLI in TUI mode, error message is not returned in the UI (but is present in the log).

                              [09:10:36] Error: CDK deploy failed: ❌ �[1mAgentCore-HarnessTest-eu�[22m failed: DeploymentError: The stack named AgentCore-HarnessTest-eu failed creation, it may need to be manually deleted from the AWS console: ROLLBACK_COMPLETE: Resource handler returned message: "Resource of type 'AWS::IAM::Role' with identifier 'HarnessTest_MyHarness' already exists." (RequestToken: a67da7f0-e57d-39b6-cd35-f086e9018be4, HandlerErrorCode: AlreadyExists)
                              [09:10:36] Status: FAILED
                              

                              Steps to Reproduce

                              1. Create a new agent harness
                              2. ensure you have two targets in agentcore/aws-targets.json for same account different regions
                              3. deploy the agent in one target
                              4. deploy the agent in another target

                              Expected Behavior

                              Deployment succeeds

                              Actual Behavior

                              Deployment fails because IAM role already exists

                              CLI Version

                              No response

                              Operating System

                              macOS

                              Additional Context

                              No response

                              Metadata

                              Metadata

                              Assignees

                              No one assigned

                                Labels

                                bugSomething isn't working

                                Type

                                No type

                                Projects

                                No projects

                                  Milestone

                                  No milestone

                                  Relationships

                                  None yet

                                  Development

                                  No branches or pull requests

                                  Issue actions