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note that ceph-deploy should not be called with sudo on certain situations

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Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
This commit is contained in:
Alfredo Deza 2013-09-20 16:02:28 -04:00
parent e112a8348a
commit c28dd12c09
1 changed files with 16 additions and 13 deletions

29
doc/start/quick-start-preflight.rst
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@ -10,17 +10,17 @@ demo cluster to explore some of the functionality. This **Preflight Checklist**
will help you prepare an admin node and a server node for use with
``ceph-deploy``.
.. ditaa::
.. ditaa::
/----------------\ /----------------\
| Admin Node |<------->| Server Node |
| cCCC | | cCCC |
\----------------/ \----------------/
Before you can deploy Ceph using ``ceph-deploy``, you need to ensure that you
have a few things set up first on your admin node and on nodes running Ceph
daemons.
Install an Operating System
===========================
@ -42,7 +42,7 @@ SSH server. ::
Create a User
=============
Create a user on nodes running Ceph daemons.
Create a user on nodes running Ceph daemons.
.. tip:: We recommend a username that brute force attackers won't
guess easily (e.g., something other than ``root``, ``ceph``, etc).
@ -55,12 +55,12 @@ Create a user on nodes running Ceph daemons.
``ceph-deploy`` installs packages onto your nodes. This means that
the user you create requires passwordless ``sudo`` privileges.
the user you create requires passwordless ``sudo`` privileges.
.. note:: We **DO NOT** recommend enabling the ``root`` password
for security reasons.
.. note:: We **DO NOT** recommend enabling the ``root`` password
for security reasons.
To provide full privileges to the user, add the following to
To provide full privileges to the user, add the following to
``/etc/sudoers.d/ceph``. ::
echo "ceph ALL = (root) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/ceph
@ -81,22 +81,25 @@ running Ceph daemons (leave the passphrase empty). ::
Your identification has been saved in /ceph-client/.ssh/id_rsa.
Your public key has been saved in /ceph-client/.ssh/id_rsa.pub.
Copy the key to each node running Ceph daemons::
Copy the key to each node running Ceph daemons::
ssh-copy-id ceph@ceph-server
Modify your ~/.ssh/config file of your admin node so that it defaults
Modify your ~/.ssh/config file of your admin node so that it defaults
to logging in as the user you created when no username is specified. ::
Host ceph-server
Hostname ceph-server.fqdn-or-ip-address.com
User ceph
.. note:: Do not call ceph-deploy with ``sudo`` or run as ``root`` if you are
login in as a different user (as in the ssh config above) because it
will not issue ``sudo`` commands needed on the remote host.
Install ceph-deploy
===================
To install ``ceph-deploy``, execute the following::
To install ``ceph-deploy``, execute the following::
wget -q -O- 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc' | sudo apt-key add -
echo deb http://ceph.com/debian-dumpling/ $(lsb_release -sc) main | sudo tee /etc/apt/sources.list.d/ceph.list
@ -112,7 +115,7 @@ node (e.g., ensure ``iptables``, ``ufw`` or other tools that may prevent
connections, traffic forwarding, etc. to allow what you need).
.. tip:: The ``ceph-deploy`` tool is new and you may encounter some issues
without effective error messages.
without effective error messages.
Once you have completed this pre-flight checklist, you are ready to begin using
``ceph-deploy``.
@ -147,7 +150,7 @@ Once you have passwordless ``ssh`` connectivity, passwordless ``sudo``,
installed ``ceph-deploy``, and you have ensured appropriate connectivity,
proceed to the `Storage Cluster Quick Start`_.
.. tip:: The ``ceph-deploy`` utility can install Ceph packages on remote
.. tip:: The ``ceph-deploy`` utility can install Ceph packages on remote
machines from the admin node!
.. _Storage Cluster Quick Start: ../quick-ceph-deploy