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[docs] Show expected terminal output for manual cluster setup (#11752)

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Co-authored-by: Richard Liaw <rliaw@berkeley.edu>
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dHannasch 2020-11-02 21:59:14 -07:00 • committed by GitHub
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doc/source/cluster/index.rst
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@ -87,23 +87,39 @@ random port.
.. code-block:: bash
ray start --head --port=6379
$ ray start --head --port=6379
...
Next steps
To connect to this Ray runtime from another node, run
ray start --address='<ip address>:6379' --redis-password='<password>'
If connection fails, check your firewall settings and network configuration.
The command will print out the address of the Redis server that was started
(and some other address information).
(the local node IP address plus the port number you specified).
**Then on all of the other nodes**, run the following. Make sure to replace
**Then on each of the other nodes**, run the following. Make sure to replace
``<address>`` with the value printed by the command on the head node (it
should look something like ``123.45.67.89:6379``).
.. code-block:: bash
ray start --address=<address>
$ ray start --address=<address> --redis-password='<password>'
--------------------
Ray runtime started.
--------------------
To terminate the Ray runtime, run
ray stop
If you wish to specify that a machine has 10 CPUs and 1 GPU, you can do this
with the flags ``--num-cpus=10`` and ``--num-gpus=1``. See the :ref:`Configuration <configuring-ray>` page for more information.
Now we've started the Ray runtime.
If you see ``Ray runtime started.``, then the node successfully connected to
the ``<address>``. If the ``<address>`` is inaccessible (because, for example,
the head node is not actually running), then you will get an error such as
``Unable to connect to Redis. If the Redis instance is on a different machine,
check that your firewall is configured properly.``
Stopping Ray
~~~~~~~~~~~~