Security considerations when adding a base Application Server node to ND


The major security issue when adding a node to the cell is whether the user registries between the base appserver and the deployment manager are the same.

When adding a node to the cell, you automatically inherit both the user registry and the authentication mechanism of the cell.

For distributed security, all servers in the cell must use the same user registry and authentication mechanism. To recover from a user registry change, modify the applications so that the user and group-to-role mappings are correct for the new user registry.

Another important consideration is the SSL public-key infrastructure. Prior to performing the addNode command with the dmgr, verify that addNode.sh can communicate as an SSL client with the dmgr. This communication requires that the addNode truststore configured in sas.client.props contains the signer certificate of the dmgr personal certificate, as found in the keystore and specified in the admin console.

The following issues require consideration when running addNode.sh with security:

Proper understanding of the security interactions between distributed servers greatly reduces problems that are encountered with secure communications. Security adds complexity because additional function needs management. Security needs thorough consideration during the planning of the infrastructure. This document helps to reduce the problems that can occur because of inherent security interactions.

When we have security problems that are related to the WAS ND environment, see Troubleshooting security configurations to find additional information about the problem. When trace is needed to solve a problem because servers are distributed, it is often required to gather trace on all servers simultaneously while recreating the problem. This trace can be enabled dynamically or statically, depending on the type of problem that is occurring.



 

Related concepts

Secure installation for client signer retrieval
New features for securing applications and their environment

 

Related tasks

Task overview: Securing resources