[Cassandra Wiki] Update of "SimpleAuthenticator" by DaveBrosius

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The "SimpleAuthenticator" page has been changed by DaveBrosius:
http://wiki.apache.org/cassandra/SimpleAuthenticator?action=diff&rev1=1&rev2=2

Comment:
update to how the SimpleAuthenticator works in 1.0.0

- SimpleAuthenticator is a authenticator provided with Cassandra.
+ Cassandra uses a simple and pluggable authentication and authorization model using the
+ supplied interfaces:
+ 
+ {{{
+ org.apache.cassandra.auth.IAuthenticator.java
+ org.apache.cassandra.auth.IAuthority.java
+ }}}
+ 
+ Out of the box Cassandra ships with a promiscuous implementation that allows all access to all
+ users without the need to log in. If you want to increase the security beyond this you are free to
+ implement the above interfaces to provide whatever security mechanisms you like.
+ 
+ In the source distribution there is a simple example of authentication and authorization based
+ on entries in properties files. This implementation is not provided with the binary distribution
+ as it may not provide a level of security that is adequate for your needs. However, you can use
+ these examples for your own implementations. This example is found in the examples directory, in the
+ package
+ 
+ {{{
+ org.apache.cassandra.auth.SimpleAuthenticator.java
+ }}}
+ 
+ To use this implementation, move the classes to the cassandra source tree, and recompile the jars
+ with their inclusion. Then move the example property files
+ {{{
+ access.properties
+ passwd.properties
+ }}}
+ to your conf directory. You can refer to these files for the format needed by the SimpleAuthenticator class.
+ 
  You enable it by adding
  {{{
-   <Authenticator>org.apache.cassandra.auth.SimpleAuthenticator</Authenticator>
+ authenticator: org.apache.cassandra.auth.SimpleAuthenticator
+ authority: org.apache.cassandra.auth.SimpleAuthority
  }}}
- in conf/storage-conf.xml. If no <Authenticator> is specified, the default
- is org.apache.cassandra.auth.AllowAllAuthenticator
+ in conf/cassandra.yaml
+ If no <Authenticator> is specified, the default is org.apache.cassandra.auth.AllowAllAuthenticator
  
  If you use SimpleAuthenticator you should also update
  bin/cassandra.in.sh to specify additional properties which point to the
  location of your authentication files.
  Add the following to the JVM_OPTS  (e.g. before the -Dcom.sun.management.jmxremote.port setting):
  {{{
-         -Dpasswd.properties=/usr/local/apache-cassandra-0.6.6/conf/passwd.properties \
+         -Dpasswd.properties=/usr/local/apache-cassandra-1.0.0/conf/passwd.properties \
-         -Daccess.properties=/usr/local/apache-cassandra-0.6.6/conf/access.properties \
+         -Daccess.properties=/usr/local/apache-cassandra-1.0.0/conf/access.properties \
  }}}
  
  (Alter the paths to the configuration files depending on where placed the files.)
  
- See the sample passwd.properties and access.properties files in the conf directory.
-