Open Hadoop HDFS NameNode WebUI
Determine if TCP port 50070 and 50470 for Hadoop/HDFS NameNode
While some ports such as HTTP and HTTPS are required to be open to
Recommended Actions
Follow the appropriate remediation steps below to resolve the issue.
-
Log in to the Google Oracle Platform Console.
-
Scroll down the left navigation panel and choose the “Virtual Cloud Networks” under the “Networking.”
-
On the “Virtual Cloud Networks” page, click on the “Name” as a link to access the “Virtual Network.”
-
On the “Virtual Cloud Network Details” page, scroll down the left navigation panel and choose the “Network Security Groups” option under the “Resources.”
-
On the “Network Security Groups” page, select the “Security group” by clicking on the “Name” as a link to access the security group.
-
On the “Network Security Group Details” page, under the “Security Rules” check if TCP port 50070 and 50470 for “Hadoop/HDFS NameNode WebUI” service is open to the public.Hadoop/HDFS NameNode WebUI should be restricted to known IP addresses.
-
Repeat steps number 2 - 6 to check other “Security Groups” in the account.
-
Navigate to “Virtual Cloud Networks” under the “Networking”, click on the “Name” as a link to access the “Virtual Network”, select the “Security Group” in which TCP port 50070 and 50470 for Hadoop/HDFS NameNode WebUI needs to restrict to known IP addresses.
-
On the “Security Rules” page, click on the checkbox of the “Ingress” and click on the “Edit” button at the top to make the changes.
-
On the “Edit Rules” page, enter the “IP Address” as per requirements under the “Source CIDR” and click on the “Save” button to make the changes.
-
Repeat steps number to restrict TCP port 50070 and 50470 to known IP addresses.