Merge pull request #102001 from dagiro/ts_ambari5

ts_ambari5

Author: v-albemi

articles/hdinsight/TOC.yml

@@ -509,6 +509,8 @@
         href: ./hdinsight-troubleshoot-yarn.md
       - name: Troubleshoot Data Lake Store files
         href: ./hadoop/hdinsight-troubleshoot-data-lake-files.md
+      - name: Apache Ambari directory alerts
+        href: ./hadoop/apache-ambari-troubleshoot-directory-alerts.md
 - name: Apache Kafka
   items:
   - name: Overview

articles/hdinsight/hadoop/apache-ambari-troubleshoot-directory-alerts.md

@@ -0,0 +1,58 @@
+---
+title: Apache Ambari directory alerts in Azure HDInsight
+description: Discussion and analysis of possible reasons and solutions for Apache Ambari directory alerts in HDInsight.
+author: hrasheed-msft
+ms.author: hrasheed
+ms.reviewer: jasonh
+ms.service: hdinsight
+ms.topic: troubleshooting
+ms.date: 01/22/2020
+---
+
+# Scenario: Apache Ambari directory alerts in Azure HDInsight
+
+This article describes troubleshooting steps and possible resolutions for issues when interacting with Azure HDInsight clusters.
+
+## Issue
+
+You receive errors from Apache Ambari that are similar to:
+
+```
+1/1 local-dirs have errors: [ /mnt/resource/hadoop/yarn/local : Cannot create directory: /mnt/resource/hadoop/yarn/local ]
+1/1 log-dirs have errors: [ /mnt/resource/hadoop/yarn/log : Cannot create directory: /mnt/resource/hadoop/yarn/log ]
+```
+
+## Cause
+
+The mentioned directories from Ambari alert are missing on affected worker node(s).
+
+## Resolution
+
+Manually create missing directories on the affected worker node(s).
+
+1. SSH to the relevant worker node.
+
+1. Get root user: `sudo su`.
+
+1. Recursively create needed directories.
+
+1. Change owner and group for these directories.
+
+    ```bash
+    chown -R yarn /mnt/resource/hadoop/yarn/local
+    chgrp -R hadoop /mnt/resource/hadoop/yarn/local
+    chown -R yarn /mnt/resource/hadoop/yarn/log
+    chgrp -R hadoop /mnt/resource/hadoop/yarn/log
+    ```
+
+1. From Apache Ambari UI, disable, and then enable alert.
+
+## Next steps
+
+If you didn't see your problem or are unable to solve your issue, visit one of the following channels for more support:
+
+* Get answers from Azure experts through [Azure Community Support](https://azure.microsoft.com/support/community/).
+
+* Connect with [@AzureSupport](https://twitter.com/azuresupport) - the official Microsoft Azure account for improving customer experience. Connecting the Azure community to the right resources: answers, support, and experts.
+
+* If you need more help, you can submit a support request from the [Azure portal](https://portal.azure.com/?#blade/Microsoft_Azure_Support/HelpAndSupportBlade/). Select **Support** from the menu bar or open the **Help + support** hub. For more detailed information, review [How to create an Azure support request](https://docs.microsoft.com/azure/azure-supportability/how-to-create-azure-support-request). Access to Subscription Management and billing support is included with your Microsoft Azure subscription, and Technical Support is provided through one of the [Azure Support Plans](https://azure.microsoft.com/support/plans/).