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From greghogan <...@git.apache.org>
Subject [GitHub] flink pull request: [FLINK-3161][dist] Externalize cluster start-u...
Date Wed, 27 Jan 2016 15:03:27 GMT
Github user greghogan commented on the pull request:

    The `pdsh` section on [Environment Variables](http://linux.die.net/man/1/pdsh) lists two
    > Override the standard arguments that pdsh passes to the ssh(1) command ("-2 -a -x
-l%u %h"). The use of the parameters %u, %h, and %n (as documented in the rcmd/exec section
above) is optional. If these parameters are missing, pdsh will append them to the ssh commandline
because it is assumed they are mandatory.
    > Append additional options to the ssh(1) command invoked by pdsh. For example, PDSH_SSH_ARGS_APPEND="-q"
would run ssh in quiet mode, or "-v" would increase the verbosity of ssh. (Note: these arguments
are actually prepended to the ssh commandline to ensure they appear before any target hostname
argument to ssh.)
    By default `pdsh` is enforcing protocol version 2, disabling the authentication agent,
and disabling X11 forwarding. For consistency we can blank out PDSH_SSH_ARGS and set PDSH_SSH_ARGS_APPEND

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