diff --git a/core/src/main/java/hudson/util/DoubleLaunchChecker.java b/core/src/main/java/hudson/util/DoubleLaunchChecker.java
index d541452ca1..6fac015c02 100644
--- a/core/src/main/java/hudson/util/DoubleLaunchChecker.java
+++ b/core/src/main/java/hudson/util/DoubleLaunchChecker.java
@@ -24,27 +24,22 @@
 
 package hudson.util;
 
-import static hudson.init.InitMilestone.JOB_CONFIG_ADAPTED;
-import static javax.servlet.http.HttpServletResponse.SC_INTERNAL_SERVER_ERROR;
-
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
+import hudson.Extension;
+import hudson.ExtensionList;
+import hudson.Main;
 import hudson.Util;
-import hudson.init.Initializer;
-import hudson.triggers.SafeTimerTask;
+import hudson.model.AdministrativeMonitor;
+import hudson.model.AperiodicWork;
 import java.io.File;
 import java.io.IOException;
 import java.nio.charset.Charset;
 import java.nio.file.Files;
+import java.time.Duration;
 import java.util.Random;
-import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import javax.servlet.ServletException;
 import jenkins.model.Jenkins;
-import jenkins.util.Timer;
-import org.kohsuke.stapler.StaplerRequest;
-import org.kohsuke.stapler.StaplerResponse;
-import org.kohsuke.stapler.interceptor.RequirePOST;
 
 /**
  * Makes sure that no other Hudson uses our {@code JENKINS_HOME} directory,
@@ -63,21 +58,15 @@ import org.kohsuke.stapler.interceptor.RequirePOST;
  * @author Kohsuke Kawaguchi
  * @since 1.178
  */
-@SuppressFBWarnings(value = "PREDICTABLE_RANDOM", justification = "The random is just used for load distribution.")
-public class DoubleLaunchChecker {
+@Extension
+public class DoubleLaunchChecker extends AdministrativeMonitor {
     /**
      * The timestamp of the owner file when we updated it for the last time.
      * 0 to indicate that there was no update before.
      */
     private long lastWriteTime = 0L;
 
-    /**
-     * Once the error is reported, the user can choose to ignore and proceed anyway,
-     * in which case the flag is set to true.
-     */
-    private boolean ignore = false;
-
-    private final Random random = new Random();
+    private boolean activated;
 
     public final File home;
 
@@ -91,20 +80,29 @@ public class DoubleLaunchChecker {
         home = Jenkins.get().getRootDir();
     }
 
+    @Override
+    public String getDisplayName() {
+        return Messages.DoubleLaunchChecker_duplicate_jenkins_checker();
+    }
+
+    @Override
+    public boolean isActivated() {
+        return activated;
+    }
+
     protected void execute() {
+        LOGGER.fine("running detector");
         File timestampFile = new File(home, ".owner");
 
         long t = timestampFile.lastModified();
-        if (t != 0 && lastWriteTime != 0 && t != lastWriteTime && !ignore) {
+        if (t != 0 && lastWriteTime != 0 && t != lastWriteTime && isEnabled()) {
             try {
                 collidingId = Files.readString(Util.fileToPath(timestampFile), Charset.defaultCharset());
             } catch (IOException e) {
                 LOGGER.log(Level.SEVERE, "Failed to read collision file", e);
             }
             // we noticed that someone else have updated this file.
-            // switch GUI to display this error.
-            // TODO seems drastic; could this just be switched to an AdministrativeMonitor?
-            Jenkins.get().servletContext.setAttribute("app", this);
+            activated = true;
             LOGGER.severe("Collision detected. timestamp=" + t + ", expected=" + lastWriteTime);
             // we need to continue updating this file, so that the other Hudson would notice the problem, too.
         }
@@ -113,11 +111,10 @@ public class DoubleLaunchChecker {
             Files.writeString(Util.fileToPath(timestampFile), getId(), Charset.defaultCharset());
             lastWriteTime = timestampFile.lastModified();
         } catch (IOException e) {
+            LOGGER.log(Level.FINE, null, e);
             // if failed to write, err on the safe side and assume things are OK.
             lastWriteTime = 0;
         }
-
-        schedule();
     }
 
     /**
@@ -131,44 +128,29 @@ public class DoubleLaunchChecker {
         return collidingId;
     }
 
-    /**
-     * Schedules the next execution.
-     */
-    public void schedule() {
-        // randomize the scheduling so that multiple Hudson instances will write at the file at different time
-        long MINUTE = 1000 * 60; // TODO use TimeUnit.MINUTE.toMillis
+    @SuppressFBWarnings(value = "PREDICTABLE_RANDOM", justification = "The random is just used for load distribution.")
+    @Extension
+    public static final class Schedule extends AperiodicWork {
 
-        Timer.get()
-            .schedule(new SafeTimerTask() {
-                @Override
-                protected void doRun() {
-                    execute();
-                }
-            }, (random.nextInt(30) + 60) * MINUTE, TimeUnit.MILLISECONDS);
-    }
+        private final Random random = new Random();
 
-    @Initializer(after = JOB_CONFIG_ADAPTED)
-    public static void init() {
-        // TODO AperiodicWork would be more idiomatic
-        new DoubleLaunchChecker().schedule();
-    }
+        @Override
+        public AperiodicWork getNewInstance() {
+            // Awkward to use DoubleLaunchChecker itself as the AperiodicWork since it is stateful, and we may not return this.
+            return new Schedule();
+        }
 
-    /**
-     * Serve all URLs with the index view.
-     */
-    public void doDynamic(StaplerRequest req, StaplerResponse rsp) throws IOException, ServletException {
-        rsp.setStatus(SC_INTERNAL_SERVER_ERROR);
-        req.getView(this, "index.jelly").forward(req, rsp);
-    }
+        @Override
+        public long getRecurrencePeriod() {
+            // randomize the scheduling so that multiple Jenkins instances will write at the file at different time
+            return (Main.isUnitTest ? Duration.ofSeconds(random.nextInt(10) + 20) : Duration.ofMinutes(random.nextInt(30) + 60)).toMillis();
+        }
+
+        @Override
+        protected void doAperiodicRun() {
+            ExtensionList.lookupSingleton(DoubleLaunchChecker.class).execute();
+        }
 
-    /**
-     * Ignore the problem and go back to using Hudson.
-     */
-    @RequirePOST
-    public void doIgnore(StaplerRequest req, StaplerResponse rsp) throws IOException {
-        ignore = true;
-        Jenkins.get().servletContext.setAttribute("app", Jenkins.get());
-        rsp.sendRedirect2(req.getContextPath() + '/');
     }
 
     private static final Logger LOGGER = Logger.getLogger(DoubleLaunchChecker.class.getName());
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/description.jelly b/core/src/main/resources/hudson/util/DoubleLaunchChecker/description.jelly
new file mode 100644
index 0000000000..bb405e9319
--- /dev/null
+++ b/core/src/main/resources/hudson/util/DoubleLaunchChecker/description.jelly
@@ -0,0 +1,4 @@
+<?jelly escape-by-default='true'?>
+<j:jelly xmlns:j="jelly:core" xmlns:l="/lib/layout" xmlns:f="/lib/form" xmlns:i="jelly:fmt" xmlns:st="jelly:stapler">
+    ${%blurb}
+</j:jelly>
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/description.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/description.properties
new file mode 100644
index 0000000000..ee54268d61
--- /dev/null
+++ b/core/src/main/resources/hudson/util/DoubleLaunchChecker/description.properties
@@ -0,0 +1 @@
+blurb = Detects if more than one Jenkins process is attempting to run in the same <code>$JENKINS_HOME</code> directory simultaneously.
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index.jelly b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message.jelly
similarity index 85%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index.jelly
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message.jelly
index cfbbda0abd..9f7354230d 100644
--- a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index.jelly
+++ b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message.jelly
@@ -24,13 +24,7 @@ THE SOFTWARE.
 
 <?jelly escape-by-default='true'?>
 <j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form" xmlns:i="jelly:fmt">
-  <l:layout>
-    <l:header title="Jenkins">
-      <!--meta http-equiv="refresh" content="5" /-->
-    </l:header>
-    <l:side-panel />
-    <l:main-panel>
-      <h1>${%Error}</h1>
+  <div class="alert alert-warning">
       <p>
         ${%message(it.home)}
       </p>
@@ -45,10 +39,9 @@ THE SOFTWARE.
         </tr>
       </table>
       <div>
-        <form method="post" action="${rootURL}/ignore">
+        <form method="post" action="${rootURL}/${it.url}/disable">
           <f:submit value="${%label}" />
         </form>
       </div>
-    </l:main-panel>
-  </l:layout>
+  </div>
 </j:jelly>
\ No newline at end of file
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_bg.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_bg.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_bg.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_bg.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_da.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_da.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_da.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_da.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_de.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_de.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_de.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_de.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_es.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_es.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_es.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_es.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_fr.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_fr.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_fr.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_fr.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_it.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_it.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_it.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_it.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_ja.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_ja.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_ja.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_ja.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_nl.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_nl.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_nl.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_nl.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_pt_BR.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_pt_BR.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_pt_BR.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_pt_BR.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_ru.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_ru.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_ru.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_ru.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_sr.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_sr.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_sr.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_sr.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_tr.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_tr.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_tr.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_tr.properties
diff --git a/core/src/main/resources/hudson/util/DoubleLaunchChecker/index_zh_TW.properties b/core/src/main/resources/hudson/util/DoubleLaunchChecker/message_zh_TW.properties
similarity index 100%
rename from core/src/main/resources/hudson/util/DoubleLaunchChecker/index_zh_TW.properties
rename to core/src/main/resources/hudson/util/DoubleLaunchChecker/message_zh_TW.properties
diff --git a/core/src/main/resources/hudson/util/Messages.properties b/core/src/main/resources/hudson/util/Messages.properties
index b4c8f3325a..a44fcfd5b3 100644
--- a/core/src/main/resources/hudson/util/Messages.properties
+++ b/core/src/main/resources/hudson/util/Messages.properties
@@ -24,6 +24,7 @@ ClockDifference.InSync=In sync
 ClockDifference.Ahead={0} ahead
 ClockDifference.Behind={0} behind
 ClockDifference.Failed=Failed to check
+DoubleLaunchChecker.duplicate_jenkins_checker=Duplicate Jenkins checker
 FormFieldValidator.did_not_manage_to_validate_may_be_too_sl=Did not manage to validate {0} (may be too slow)
 FormValidation.ValidateRequired=Required
 FormValidation.Error.Details=(show details)
diff --git a/test/src/test/java/hudson/util/DoubleLaunchCheckerTest.java b/test/src/test/java/hudson/util/DoubleLaunchCheckerTest.java
new file mode 100644
index 0000000000..cb6772a4d6
--- /dev/null
+++ b/test/src/test/java/hudson/util/DoubleLaunchCheckerTest.java
@@ -0,0 +1,63 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2023 CloudBees, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package hudson.util;
+
+import static org.awaitility.Awaitility.await;
+
+import hudson.ExtensionList;
+import java.time.Duration;
+import java.util.logging.Level;
+import org.junit.Rule;
+import org.junit.Test;
+import org.jvnet.hudson.test.JenkinsRule;
+import org.jvnet.hudson.test.PrefixedOutputStream;
+import org.jvnet.hudson.test.RealJenkinsRule;
+
+public final class DoubleLaunchCheckerTest {
+
+    @Rule
+    public RealJenkinsRule mainController = new RealJenkinsRule().
+        withName("main").
+        withColor(PrefixedOutputStream.Color.BLUE).
+        withLogger(DoubleLaunchChecker.class, Level.FINE);
+
+    @Rule
+    public RealJenkinsRule duplicateController = new RealJenkinsRule(mainController).
+        withName("dupe").
+        withColor(PrefixedOutputStream.Color.RED).
+        withLogger(DoubleLaunchChecker.class, Level.FINE);
+
+    @Test
+    public void activated() throws Throwable {
+        mainController.startJenkins();
+        duplicateController.startJenkins();
+        mainController.runRemotely(DoubleLaunchCheckerTest::waitForWarning);
+    }
+
+    private static void waitForWarning(JenkinsRule r) throws Throwable {
+        await().atMost(Duration.ofMinutes(3)).until(ExtensionList.lookupSingleton(DoubleLaunchChecker.class)::isActivated);
+    }
+
+}