ECS 3.6.2 Data Access Guide

Load metadata values to ECS using the Management REST API

You can supply the metadata values required to secure an ECS bucket for use with a secure Hadoop cluster by running ECS Management REST API commands.

1. Create the JSON file that contains the metadata, as described in: Secure the ECS bucket using metadata.
2. Log in to ECS using your System Administrator credentials in order to obtain an authentication token that can be used when running ECS management commands.
   You can run the login command using curl. In the following example, you must replace the <username>:<password> with ECS System Administrator credentials and supply the IP address or hostname of an ECS node.

   TOKEN=$(curl -s -k -u <username>:<password> -D - -o /dev/null https://<ECS node IP or hostname>:4443/login | grep X-SDS-AUTH-TOKEN | tr -cd '\40-\176')

3. Run the PUT object/bucket/<bucketname>/metadata ECS Management REST API command to deploy the metadata, as shown in the following example

   curl -s -k -X PUT -H "$TOKEN" -H "Accept: application/json" -H "Content-Type: application/json" -T <bucketDetails>.json https:/<hostname>:4443/object/bucket/<bucketname>/metadata?namespace=<namespace>

   You must replace:

   • <username> with an ECS System Administrator username.
   • <password> with the password for the specified ECS System Administrator username.
   • <bucketname> with the name of the bucket you are using for HDFS data.
   • <hostname> with the IP address or hostname of an ECS node.
   • <bucketdetails> with the filename of the JSON file containing name-value pairs.
   • <namespace> with the name of the namespace the bucket resides in.
   Once deployed, the metadata is available to all ECS nodes.