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Reviewed-by: Kacur, Michal <michal.kacur@t-systems.com> Co-authored-by: proposalbot <proposalbot@otc-service.com> Co-committed-by: proposalbot <proposalbot@otc-service.com>
53 lines
2.4 KiB
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53 lines
2.4 KiB
ReStructuredText
:original_name: mrs_01_1665.html
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.. _mrs_01_1665:
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Configuring NFS
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===============
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Scenario
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--------
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Before deploying a cluster, you can deploy a Network File System (NFS) server based on requirements to store NameNode metadata to enhance data reliability.
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If the NFS server has been deployed and NFS services are configured, you can follow operations in this section to configure NFS on the cluster. These operations are optional.
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Procedure
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---------
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#. Check the permission of the shared NFS directories on the NFS server to ensure that the server can access NameNode in the MRS cluster.
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#. .. _mrs_01_1665__en-us_topic_0000001219351281_lff3e9b51a9354f89ab59a1c515495818:
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Log in to the active NameNode as user **root**.
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#. Run the following commands to create a directory and assign it write permissions:
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**mkdir** **${BIGDATA_DATA_HOME}/namenode-nfs**
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**chown omm:wheel** **${BIGDATA_DATA_HOME}/namenode-nfs**
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**chmod 750** **${BIGDATA_DATA_HOME}/namenode-nfs**
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#. .. _mrs_01_1665__en-us_topic_0000001219351281_lbb64192db9814446b3744fcbf6326d7b:
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Run the following command to mount the NFS to the active NameNode:
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**mount -t nfs -o rsize=8192,wsize=8192,soft,nolock,timeo=3,intr** *IP address of the NFS server*:*Shared directory* **${BIGDATA_DATA_HOME}/namenode-nfs**
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For example, if the IP address of the NFS server is **192.168.0.11** and the shared directory is **/opt/Hadoop/NameNode**, run the following command:
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**mount -t nfs -o rsize=8192,wsize=8192,soft,nolock,timeo=3,intr 192.168.0.11:/opt/Hadoop/NameNode** **${BIGDATA_DATA_HOME}/namenode-nfs**
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#. Perform :ref:`2 <mrs_01_1665__en-us_topic_0000001219351281_lff3e9b51a9354f89ab59a1c515495818>` to :ref:`4 <mrs_01_1665__en-us_topic_0000001219351281_lbb64192db9814446b3744fcbf6326d7b>` on the standby NameNode.
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.. note::
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The names of the shared directories (for example, **/opt/Hadoop/NameNode**) created on the NFS server by the active and standby NameNodes must be different.
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#. Log in to FusionInsight Manager, and choose **Cluster** > *Name of the desired cluster* > **Service** > **HDFS** > **Configuration** > **All Configurations**.
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#. In the search box, search for **dfs.namenode.name.dir**, add **${BIGDATA_DATA_HOME}/namenode-nfs** to **Value**, and click **Save**. Separate paths with commas (,).
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#. Click **OK**. On the **Dashboard** tab page, choose **More** > **Restart Service** to restart the service.
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