[CAMEL-8202] Excessive loggging: JSCH -> Permanently added 'X' (RSA) to the list of known hosts.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.13.2
• Fix Version/s: 2.15.0
• Component/s: camel-jsch
• Labels: Logging SSH

Environment

Linux, Tomcat, Camel

• Estimated Complexity: Novice
• Assignee: Claus Ibsen
• Reporter: Richard O'Sullivan
• Created: 31/Dec/14 17:11
• Updated: 25/May/16 08:14
• Resolved: 12/Feb/15 08:55

Description

A previous issue, CAMEL-5242, "Add support for pki based auth in camel-jsch" defined the default location of the SSH known_hosts file to be...

DEFAULT_KNOWN_HOSTS = "META-INF/.ssh/known_hosts". 

But this causes excessive logging with the misleading message:

JSCH -> Permanently added 'X' (RSA) to the list of known hosts.

It is misleading because the addition is not permament. It repeats with every SFTP connection. It is logged as a WARN which creates unnecesary review and filtering when analyzing the log files.

Although it is possible to configure the SFTP endpoint to specify the location of the common known_hosts file location, this must be added to every SFTP endpoint deployed to a Camel engine. For example, in a Spring XML/DSL the additional option is:

knownHostsFile={{user.home}}/.ssh/known_hosts

FIX: Change the default to be the ".ssh/known_hosts" file in the user's home path. In ScpOperations.java, the declaration becomes...

private static final String DEFAULT_KNOWN_HOSTS;
static { DEFAULT_KNOWN_HOSTS = System.getProperty("user.home") + "/.ssh/known_hosts"; }

Issue Links

• links to: GitHub Pull Request #993