To connect to the master node using PuTTY 1 Open puttyexe You can also launch

To connect to the master node using putty 1 open

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To connect to the master node using PuTTY 1. Open putty.exe . You can also launch PuTTY from the Windows programs list. 2. If necessary, in the Category list, choose Session . 3. For Host Name (or IP address) , type [email protected] MasterPublicDNS . For example: [email protected] ec2-###- ##-##-###.compute-1.amazonaws.com . 4. In the Category list, choose Connection > SSH , Auth . 5. For Private key file for authentication , choose Browse and select the .ppk file that you generated. 6. Choose Open and then Yes to dismiss the PuTTY security alert. Important When logging into the master node, type hadoop if you are prompted for a user name . 7. When you are done working on the master node, you can close the SSH connection by closing PuTTY. Note To prevent the SSH connection from timing out, you can choose Connection in the Category list and select the option Enable TCP_keepalives . If you have an active SSH 317
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Amazon EMR Management Guide View Web Interfaces Hosted on Amazon EMR Clusters session in PuTTY, you can change your settings by opening the context (right-click) for the PuTTY title bar and choosing Change Settings . View Web Interfaces Hosted on Amazon EMR Clusters Hadoop and other applications you install on your Amazon EMR cluster, publish user interfaces as web sites hosted on the master node. For security reasons, when using EMR-Managed Security Groups, these web sites are only available on the master node's local web server, so you need to connect to the master node to view them. For more information, see Connect to the Master Node Using SSH (p. 313) . Hadoop also publishes user interfaces as web sites hosted on the core and task nodes. These web sites are also only available on local web servers on the nodes. Warning It is possible to configure a custom security group to allow inbound access to these web interfaces. Keep in mind that any port on which you allow inbound traffic represents a potential security vulnerability. Carefully review custom security groups to ensure that you minimize vulnerabilities. For more information, see Control Network Traffic with Security Groups (p. 258) . The following table lists web interfaces that you can view on cluster instances. These Hadoop interfaces are available on all clusters. For the master instance interfaces, replace master-public-dns-name with the Master public DNS listed on the cluster Summary tab in the EMR console. For core and task instance interfaces, replace coretask-public-dns-name with the Public DNS name listed for the instance. To find an instance's Public DNS name , in the EMR console, choose your cluster from the list, choose the Hardware tab, choose the ID of the instance group that contains the instance you want to connect to, and then note the Public DNS name listed for the instance. Important To access web interfaces, you must edit the security groups associated with master and core instances so that they have an inbound rule that allows SSH traffic (port 22) from trusted clients, such as your computer's IP address. For more information about modifying security group rules, see Adding Rules to a Security Group
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  • Spring '12
  • LauraParker
  • Amazon Web Services, Amazon Elastic Compute Cloud

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