[🐛 Bug]: Could not start a new session -intermittently

[himani-dangwal]

What happened?

I have around 5 threads running concurrently
But during execution of testcases in between I am getting error of session not created. The issue is very intermittent

Command used to start Selenium Grid with Docker (or Kubernetes)

apiVersion: helm.toolkit.fluxcd.io/v2beta1
kind: HelmRelease
metadata:
  name: selenium-grid
  namespace: selenium-grid
spec:
  chart:
    spec:
      chart: selenium-grid
      version: 0.38.1
      sourceRef:
        kind: HelmRepository
        name: selenium-grid
        namespace: selenium-grid
  interval: 5m
  targetNamespace: selenium-grid
  releaseName: selenium-grid
  values:
    videoRecorder:
      enabled: true
      extraVolumeMounts:
        - name: selenium-grid-videodir
          mountPath: /videos
      extraVolumes:
        - name: selenium-grid-videodir
          persistentVolumeClaim:
            claimName: selenium-video-pvc
    basicAuth:
      enabled: false
    isolateComponents: true
    firefoxNode:
      resources:
        limits:
          memory: "2Gi"
          cpu: "1"
    chromeNode:
      enabled: false
    edgeNode:
      enabled: false

Relevant log output

org.openqa.selenium.SessionNotCreatedException: Could not start a new session. Response code 500. Message: Could not start a new session. Could not start a new session. Build info: version: '4.27.0', revision: 'd6e718d'
System info: os.name: 'Linux', os.arch: 'amd64', os.version: '6.1.115', java.version: '17.0.13'
Driver info: driver.version: unknown 
Host info: host: 'selenium-grid-selenium-distributor-76ff4c5987-pfkjm', ip: '172.22.10.42'
Build info: version: '4.27.0', revision: 'd6e718d'
System info: os.name: 'Linux', os.arch: 'amd64', os.version: '6.1.115', java.version: '17.0.13'
Driver info: driver.version: unknown
Build info: version: '4.25.0', revision: '8a8aea2337'
System info: os.name: 'Linux', os.arch: 'amd64', os.version: '6.1.115', java.version: '11.0.24'
Driver info: org.openqa.selenium.remote.RemoteWebDriver
Command: [null, newSession {capabilities=[Capabilities {acceptInsecureCerts: true, browserName: firefox, moz:debuggerAddress: true, moz:firefoxOptions: {prefs: {remote.active-protocols: 3}, profile: UEsDBBQACAgIAMI4l1kAAAAAAAA...}}]}]
Capabilities {acceptInsecureCerts: true, browserName: firefox, moz:debuggerAddress: true, moz:firefoxOptions: {prefs: {remote.active-protocols: 3}, profile: UEsDBBQACAgIAMI4l1kAAAAAAAA...}}
	at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:114)
	at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:75)
	at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:61)
	at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:162)
	at org.openqa.selenium.remote.TracedCommandExecutor.execute(TracedCommandExecutor.java:53)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:545)
	at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:245)
	at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:174)
	at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:152)
	at com.umantis.test.framework.webdriver.LocalDriverFactory.createInstance(LocalDriverFactory.java:79)
	at com.umantis.test.framework.webdriver.LocalWebDriver.create(LocalWebDriver.java:68)
	at com.umantis.test.framework.configuration.TestBase.methodSetup(TestBase.java:80)
	at jdk.internal.reflect.GeneratedMethodAccessor258.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:141)
	at org.testng.internal.invokers.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:71)
	at org.testng.internal.invokers.ConfigInvoker.invokeConfigurationMethod(ConfigInvoker.java:400)
	at org.testng.internal.invokers.ConfigInvoker.invokeConfigurations(ConfigInvoker.java:333)
	at org.testng.internal.invokers.TestInvoker.runConfigMethods(TestInvoker.java:833)
	at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:600)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:230)
	at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:63)
	at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:992)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:203)
	at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:154)
	at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:134)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at org.testng.internal.thread.graph.TestNGFutureTask.run(TestNGFutureTask.java:22)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)

Operating System

Kubernetes EKS

Docker Selenium version (image tag)

latest

Selenium Grid chart version (chart version)

0.38.1

[github-actions]

@himani-dangwal, thank you for creating this issue. We will troubleshoot it as soon as we can.

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Thank you!

[VietND96]

Do you have multiple Node build version are connecting to the same Hub? Since I can see Hub is 4.27.0, and looks like the Node get an issue with 4.25.0

[himani-dangwal]

No I only have single node version

[VietND96]

In values, can you set global.seleniumGrid.logLevel is FINE to get more debug logs around Node or Distributor?

[himani-dangwal]

Hi please find the log of distributor pod
distributor.txt

[himani-dangwal]

and could you pelase suggest the most stable vesrion that can be used. I tried withfew older version. in one autoscaling was not working while in other secret name is missing

[VietND96]

For autoscaling, recently there were lots of changes. To answer your question, might I know which existing KEDA core version/image tag that you are using? Or you are using sub-chart KEDA to be installed together with Grid?

[VietND96]

Can you try chart 0.38.3 and confirm.

[himani-dangwal]

Hi @VietND96 I updated the chart to the latest version 0.38.4 still got the issue. there is one difference that I saw.
in my selenium test threadcount is 5 but when the execution takes places in the grid only 3 firefox node are created. Is there any value that I am missing to update for new chart version
values:
basicAuth:
enabled: false
isolateComponents: true
firefoxNode:
resources:
limits:
memory: "2Gi"
cpu: "1"
chromeNode:
enabled: false
edgeNode:
enabled: false
autoscaling:
enabled: true
scalingType: deployment
scaledOptions:
maxReplicaCount: 30
pollingInterval: 10

Log-
Could not start a new session. Possible causes are invalid address of the remote server or browser start-up failure.
Host info: host: 'runner-ajw42zxos-project-294-concurrent-0-vl7abav7', ip: '172.22.9.58'
org.openqa.selenium.SessionNotCreatedException: Could not start a new session. Possible causes are invalid address of the remote server or browser start-up failure.
Host info: host: 'runner-ajw42zxos-project-294-concurrent-0-vl7abav7', ip: '172.22.9.58'
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:563)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:245)
at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:174)
at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:152)
at com.umantis.test.framework.webdriver.LocalDriverFactory.createInstance(LocalDriverFactory.java:79)
at com.umantis.test.framework.webdriver.LocalWebDriver.create(LocalWebDriver.java:69)
at com.umantis.test.framework.configuration.TestBase.methodSetup(TestBase.java:80)
at jdk.internal.reflect.GeneratedMethodAccessor113.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:141)
at org.testng.internal.invokers.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:71)
at org.testng.internal.invokers.ConfigInvoker.invokeConfigurationMethod(ConfigInvoker.java:400)
at org.testng.internal.invokers.ConfigInvoker.invokeConfigurations(ConfigInvoker.java:333)
at org.testng.internal.invokers.TestInvoker.runConfigMethods(TestInvoker.java:833)
at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:600)
at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:230)
at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:63)
at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:992)
at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:203)
at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:154)
at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:134)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at org.testng.internal.thread.graph.TestNGFutureTask.run(TestNGFutureTask.java:22)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: org.openqa.selenium.TimeoutException: java.util.concurrent.TimeoutException
Build info: version: '4.25.0', revision: '8a8aea2337'
System info: os.name: 'Linux', os.arch: 'amd64', os.version: '6.1.119', java.version: '11.0.24'
Driver info: driver.version: LocalWebDriver
at org.openqa.selenium.remote.http.jdk.JdkHttpClient.execute0(JdkHttpClient.java:418)
at org.openqa.selenium.remote.http.AddSeleniumUserAgent.lambda$apply$0(AddSeleniumUserAgent.java:42)
at org.openqa.selenium.remote.http.Filter.lambda$andFinally$1(Filter.java:55)
at org.openqa.selenium.remote.http.jdk.JdkHttpClient.execute(JdkHttpClient.java:374)
at org.openqa.selenium.remote.tracing.TracedHttpClient.execute(TracedHttpClient.java:54)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:89)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:75)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:61)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:162)
at org.openqa.selenium.remote.TracedCommandExecutor.execute(TracedCommandExecutor.java:53)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:545)
... 27 more
Caused by: java.util.concurrent.TimeoutException
at java.base/java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1892)
at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2027)
at org.openqa.selenium.remote.http.jdk.JdkHttpClient.execute0(JdkHttpClient.java:401)
... 37 more

[VietND96]

Hi, at the time that you saw 5 request queue but only 3 Node scaled up. Can you get response from GraphQL endpoint with below curl command?
curl -k -X POST -H "Content-Type: application/json" --data '{"query":"{ grid { sessionCount, maxSession, totalSlots }, nodesInfo { nodes { id, status, sessionCount, maxSession, slotCount, stereotypes, sessions { id, capabilities, slot { id, stereotype } } } }, sessionsInfo { sessionQueueRequests } }"}' -s http://your.grid.public.ip/graphql

[himani-dangwal]

Hey @VietND96
with the thread count 5 it reached 3 or 4 but never 5
/# curl -k -X POST -H "Content-Type: application/json" --data '{"query":"{ gid { sessionCount, maxSession, totalSlots }, nodesInfo { nodes { id, status, sessionCount, maxSession, slotCount, stereotypes, sessions { id, capabilities, slot { id, stereotype } } } }, sessionsInfo { sessionQueueRequests } }"}' -s http://selenium-grid-selenium-router.selenium-grid.svc.cluster.local:4444/graphql
{
"data": {
"grid": {
"sessionCount": 3,
"maxSession": 4,
"totalSlots": 4
},
"nodesInfo": {
"nodes": [
{
"id": "cd1f87be-8adf-4c8e-8f56-8372d299a9b8",
"status": "UP",
"sessionCount": 1,
"maxSession": 1,
"slotCount": 1,
"stereotypes": "[\n {\n "slots": 1,\n "stereotype": {\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-zzczd",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n }\n }\n]",
"sessions": [
{
"id": "2902e2c4-e59f-4cd5-b265-b813a1cffa2e",
"capabilities": "{\n "acceptInsecureCerts": true,\n "browserName": "firefox",\n "browserVersion": "133.0.3",\n "moz:accessibilityChecks": false,\n "moz:buildID": "20241209150345",\n "moz:debuggerAddress": "127.0.0.1:3547",\n "moz:firefoxOptions": {\n "prefs": {\n "remote.active-protocols": 3\n },\n "profile": "UEsDBBQACAgIAFdlL1oAAAAAAAAAAAAAAAAHAAAAdXNlci5qc52QQQpCMQxE955CulKQ4loPU9I2arG2JU3s9X8+CErRjbvM8F4WIx3JNcLLzniqQ5PtDMTS7K0+sMEVzWFrwFfhk89Q7mZ\u002f3sjbmmk3MAe9nVC2EGPiVAvk\u002f5+s5oQP9JHSUzP0LitWmKQzRpe0QFJHC\u002fxphYCNP6yAxP2rNI\u002fyGuSo1AJQSwcIUBpck4UAAAA7AQAAUEsBAhQAFAAICAgAV2UvWlAaXJOFAAAAOwEAAAcAAAAAAAAAAAAAAAAAAAAAAHVzZXIuanNQSwUGAAAAAAEAAQA1AAAAugAAAAAA"\n },\n "moz:geckodriverVersion": "0.35.0",\n "moz:headless": false,\n "moz:platformVersion": "6.1.119",\n "moz:processID": 3051,\n "moz:profile": "\u002ftmp\u002frust_mozprofile4rstc1",\n "moz:shutdownTimeout": 60000,\n "moz:webdriverClick": true,\n "moz:windowless": false,\n "pageLoadStrategy": "normal",\n "platformName": "windows",\n "proxy": {\n },\n "se:bidiEnabled": false,\n "se:cdp": "wss:\u002f\u002fselenium-grid.XXX\u002fsession\u002f2902e2c4-e59f-4cd5-b265-b813a1cffa2e\u002fse\u002fcdp",\n "se:cdpVersion": "85.0",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-zzczd",\n "se:noVncPort": 7900,\n "se:vnc": "wss:\u002f\u002fselenium-grid.XXX\u002fsession\u002f2902e2c4-e59f-4cd5-b265-b813a1cffa2e\u002fse\u002fvnc",\n "se:vncEnabled": true,\n "se:vncLocalAddress": "ws:\u002f\u002f172.22.10.18:7900",\n "setWindowRect": true,\n "strictFileInteractability": false,\n "timeouts": {\n "implicit": 0,\n "pageLoad": 300000,\n "script": 30000\n },\n "unhandledPromptBehavior": "dismiss and notify",\n "userAgent": "Mozilla\u002f5.0 (X11; Linux x86_64; rv:133.0) Gecko\u002f20100101 Firefox\u002f133.0"\n}",
"slot": {
"id": "7f837691-d193-4f5b-8807-0074d87b4003",
"stereotype": "{\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-zzczd",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n}"
}
}
]
},
{
"id": "7a6f0253-7c27-4c48-aef0-57c34549c973",
"status": "UP",
"sessionCount": 1,
"maxSession": 1,
"slotCount": 1,
"stereotypes": "[\n {\n "slots": 1,\n "stereotype": {\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-p5r46",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n }\n }\n]",
"sessions": [
{
"id": "00fe3b0b-8c6a-441a-a7c6-4ac1785d026a",
"capabilities": "{\n "acceptInsecureCerts": true,\n "browserName": "firefox",\n "browserVersion": "133.0.3",\n "moz:accessibilityChecks": false,\n "moz:buildID": "20241209150345",\n "moz:debuggerAddress": "127.0.0.1:13624",\n "moz:firefoxOptions": {\n "prefs": {\n "remote.active-protocols": 3\n },\n "profile": "UEsDBBQACAgIAGFlL1oAAAAAAAAAAAAAAAAHAAAAdXNlci5qc52QQQpCMQxE955CulKQ4loPU9I2arG2JU3s9X8+CErRjbvM8F4WIx3JNcLLzniqQ5PtDMTS7K0+sMEVzWFrwFfhk89Q7mZ\u002f3sjbmmk3MAe9nVC2EGPiVAvk\u002f5+s5oQP9JHSUzP0LitWmKQzRpe0QFJHC\u002fxphYCNP6yAxP2rNI\u002fyGuSo1AJQSwcIUBpck4UAAAA7AQAAUEsBAhQAFAAICAgAYWUvWlAaXJOFAAAAOwEAAAcAAAAAAAAAAAAAAAAAAAAAAHVzZXIuanNQSwUGAAAAAAEAAQA1AAAAugAAAAAA"\n },\n "moz:geckodriverVersion": "0.35.0",\n "moz:headless": false,\n "moz:platformVersion": "6.1.119",\n "moz:processID": 4227,\n "moz:profile": "\u002ftmp\u002frust_mozprofile0IcU4I",\n "moz:shutdownTimeout": 60000,\n "moz:webdriverClick": true,\n "moz:windowless": false,\n "pageLoadStrategy": "normal",\n "platformName": "windows",\n "proxy": {\n },\n "se:bidiEnabled": false,\n "se:cdp": "wss:\u002f\u002fselenium-grid.XXX\u002fsession\u002f00fe3b0b-8c6a-441a-a7c6-4ac1785d026a\u002fse\u002fcdp",\n "se:cdpVersion": "85.0",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-p5r46",\n "se:noVncPort": 7900,\n "se:vnc": "wss:\u002f\u002fselenium-grid.XXX\u002fsession\u002f00fe3b0b-8c6a-441a-a7c6-4ac1785d026a\u002fse\u002fvnc",\n "se:vncEnabled": true,\n "se:vncLocalAddress": "ws:\u002f\u002f172.22.10.54:7900",\n "setWindowRect": true,\n "strictFileInteractability": false,\n "timeouts": {\n "implicit": 0,\n "pageLoad": 300000,\n "script": 30000\n },\n "unhandledPromptBehavior": "dismiss and notify",\n "userAgent": "Mozilla\u002f5.0 (X11; Linux x86_64; rv:133.0) Gecko\u002f20100101 Firefox\u002f133.0"\n}",
"slot": {
"id": "e00ca46b-7b6d-4b9c-809e-e6cd8fd11dbb",
"stereotype": "{\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-p5r46",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n}"
}
}
]
},
{
"id": "ef67a7b4-d5df-4d9f-ac8e-9d957e2a6aa1",
"status": "UP",
"sessionCount": 1,
"maxSession": 1,
"slotCount": 1,
"stereotypes": "[\n {\n "slots": 1,\n "stereotype": {\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-kz79r",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n }\n }\n]",
"sessions": [
{
"id": "reserved",
"capabilities": "{\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-kz79r",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n}",
"slot": {
"id": "3ba21059-82af-418f-bf8c-514a8a46f141",
"stereotype": "{\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-kz79r",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n}"
}
}
]
},
{
"id": "c3c64cb5-c5e7-4246-ad52-2bc5508f362a",
"status": "UP",
"sessionCount": 1,
"maxSession": 1,
"slotCount": 1,
"stereotypes": "[\n {\n "slots": 1,\n "stereotype": {\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-wqcs6",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n }\n }\n]",
"sessions": [
{
"id": "ad742d23-8401-4cf7-9a66-5b88d402713a",
"capabilities": "{\n "acceptInsecureCerts": true,\n "browserName": "firefox",\n "browserVersion": "133.0.3",\n "moz:accessibilityChecks": false,\n "moz:buildID": "20241209150345",\n "moz:debuggerAddress": "127.0.0.1:18345",\n "moz:firefoxOptions": {\n "prefs": {\n "remote.active-protocols": 3\n },\n "profile": "UEsDBBQACAgIABllL1oAAAAAAAAAAAAAAAAHAAAAdXNlci5qc52QQQpCMQxE955CulKQ4loPU9I2arG2JU3s9X8+CErRjbvM8F4WIx3JNcLLzniqQ5PtDMTS7K0+sMEVzWFrwFfhk89Q7mZ\u002f3sjbmmk3MAe9nVC2EGPiVAvk\u002f5+s5oQP9JHSUzP0LitWmKQzRpe0QFJHC\u002fxphYCNP6yAxP2rNI\u002fyGuSo1AJQSwcIUBpck4UAAAA7AQAAUEsBAhQAFAAICAgAGWUvWlAaXJOFAAAAOwEAAAcAAAAAAAAAAAAAAAAAAAAAAHVzZXIuanNQSwUGAAAAAAEAAQA1AAAAugAAAAAA"\n },\n "moz:geckodriverVersion": "0.35.0",\n "moz:headless": false,\n "moz:platformVersion": "6.1.119",\n "moz:processID": 246,\n "moz:profile": "\u002ftmp\u002frust_mozprofilehIgRTK",\n "moz:shutdownTimeout": 60000,\n "moz:webdriverClick": true,\n "moz:windowless": false,\n "pageLoadStrategy": "normal",\n "platformName": "windows",\n "proxy": {\n },\n "se:bidiEnabled": false,\n "se:cdp": "wss:\u002f\u002fselenium-grid.XXX\u002fsession\u002fad742d23-8401-4cf7-9a66-5b88d402713a\u002fse\u002fcdp",\n "se:cdpVersion": "85.0",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-wqcs6",\n "se:noVncPort": 7900,\n "se:vnc": "wss:\u002f\u002fselenium-grid.XXX\u002fsession\u002fad742d23-8401-4cf7-9a66-5b88d402713a\u002fse\u002fvnc",\n "se:vncEnabled": true,\n "se:vncLocalAddress": "ws:\u002f\u002f172.22.9.241:7900",\n "setWindowRect": true,\n "strictFileInteractability": false,\n "timeouts": {\n "implicit": 0,\n "pageLoad": 300000,\n "script": 30000\n },\n "unhandledPromptBehavior": "dismiss and notify",\n "userAgent": "Mozilla\u002f5.0 (X11; Linux x86_64; rv:133.0) Gecko\u002f20100101 Firefox\u002f133.0"\n}",
"slot": {
"id": "4696c05f-f716-4ead-b016-8b34301c6386",
"stereotype": "{\n "browserName": "firefox",\n "browserVersion": "",\n "moz:firefoxOptions": {\n "binary": "\u002fusr\u002fbin\u002ffirefox"\n },\n "platformName": "windows",\n "se:containerName": "selenium-grid-selenium-node-firefox-54445b5fdb-wqcs6",\n "se:noVncPort": 7900,\n "se:vncEnabled": true\n}"
}
}
]
}
]
},
"sessionsInfo": {
"sessionQueueRequests": [
"{\n "acceptInsecureCerts": true,\n "browserName": "firefox",\n "moz:debuggerAddress": true,\n "moz:firefoxOptions": {\n "prefs": {\n "remote.active-protocols": 3\n },\n "profile": "UEsDBBQACAgIAG1lL1oAAAAAAAAAAAAAAAAHAAAAdXNlci5qc52QQQpCMQxE955CulKQ4loPU9I2arG2JU3s9X8+CErRjbvM8F4WIx3JNcLLzniqQ5PtDMTS7K0+sMEVzWFrwFfhk89Q7mZ\u002f3sjbmmk3MAe9nVC2EGPiVAvk\u002f5+s5oQP9JHSUzP0LitWmKQzRpe0QFJHC\u002fxphYCNP6yAxP2rNI\u002fyGuSo1AJQSwcIUBpck4UAAAA7AQAAUEsBAhQAFAAICAgAbWUvWlAaXJOFAAAAOwEAAAcAAAAAAAAAAAAAAAAAAAAAAHVzZXIuanNQSwUGAAAAAAEAAQA1AAAAugAAAAAA"\n }\n}"
]
}
}

[VietND96]

Ok, I saw platformName: windows where it is going to situation mentioned in
#2542
#2585
It will be fixed in Grid core 4.28.0 and KEDA core (probably 2.17.0).
For now, you can do something to avoid this.

1. In Helm config

    firefoxNode:
      resources:
        limits:
          memory: "2Gi"
          cpu: "1"
      hpa:
        platformName: "Linux"

2. In automation code, based on binding that you are using, set capability platformName is Linux
   For example, Java

ChromeOptions chromeOptions = new ChromeOptions();
chromeOptions.setPlatformName("Linux")