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From conor <conor.grif...@mastercard.com>
Subject Authentication
Date Mon, 06 Mar 2017 12:25:21 GMT
Hi, I'm trying to implement authentication for an ignite cluster.  I've read
the blog post mentioned in other posts here but it's incomplete and also
quite old so I was hoping for some guidance. (blog post:

The authentication mechanism I'm intending to use is to check for a common
password shared by nodes.  So when a node starts up by itself, it obtains
the shared password from the local system using a library call.  So I need
to do two things.
 * when a node starts up it needs to fetch the local password and store it
in it's own configuration
 * when a node joins the cluster other nodes need to compare the provided
password with the one they have locally

So I tried setting the credentials locally as follows:

        TcpDiscoverySpi spi = new TcpDiscoverySpi();
        SecurityCredentials securityCredentials = new
SecurityCredentials(getModuleName(), passwordService.getPassword());
        Map<String, Object> nodeAttributes = new HashMap<>();
        IgniteProductVersion igniteProductVersion = new
        spi.setNodeAttributes(nodeAttributes, igniteProductVersion);

However I run into an issue here because when setNodeAttributes is called on
TcpDiscoverySpi I get a NullPointerException.  The exception is thrown in
line 963 which is shown below.

959    @Override public void setNodeAttributes(Map<String, Object> attrs,
IgniteProductVersion ver) {
960        assert locNodeAttrs == null;
961        assert locNodeVer == null;
963        if (log.isDebugEnabled()) {
964            log.debug("Node attributes to set: " + attrs);
965            log.debug("Node version to set: " + ver);
966        }
968        locNodeAttrs = attrs;
969        locNodeVer = ver;
970    }

The instance of IgniteLogger named 'log' is null when this method is called. 
This seems like a bug to me but if it's not, am I doing something wrong?  Is
there another way I should be fetching and setting this property on my local

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