Sébastien Han

| Comments | Tag: ceph

Introducing ceph-deploy

It’s been a while that I heard that mkcephfs was deprecated, but for the benefit of which tool? I have named ceph-deploy. The project is young and it’s work in progress but at a reasonnable advancement. Let’s get a first impression!

So ceph-deploy acts as a replacement for the old mkcephfs. Does this mean that mkcephfs is dead? No of course but it will smoothly remove for ceph-deploy.

I. Installation

First clone the github: (installing git may be necessary)

$ sudo apt-get install git unzip python-virtualenv -y
$ git clone https://github.com/ceph/ceph-deploy
Cloning into 'ceph-deploy'...
remote: Counting objects: 224, done.
remote: Compressing objects: 100% (81/81), done.
remote: Total 224 (delta 144), reused 216 (delta 136)
Receiving objects: 100% (224/224), 35.03 KiB, done.
Resolving deltas: 100% (144/144), done.
$ cd ceph-deploy/

Install pushy:

$ wget https://launchpad.net/pushy/0.5/0.5.1/+download/pushy-0.5.1.zip
$ unzip pushy-0.5.1.zip 
Archive:  pushy-0.5.1.zip
  inflating: pushy-0.5.1/setup.py    
  inflating: pushy-0.5.1/PKG-INFO    
  inflating: pushy-0.5.1/pushy/__init__.py  
  inflating: pushy-0.5.1/pushy/client.py  
  inflating: pushy-0.5.1/pushy/server.py  
  inflating: pushy-0.5.1/pushy/protocol/__init__.py  
  inflating: pushy-0.5.1/pushy/protocol/baseconnection.py  
  inflating: pushy-0.5.1/pushy/protocol/connection.py  
  inflating: pushy-0.5.1/pushy/protocol/message.py  
  inflating: pushy-0.5.1/pushy/protocol/proxy.py  
  inflating: pushy-0.5.1/pushy/transport/__init__.py  
  inflating: pushy-0.5.1/pushy/transport/daemon.py  
  inflating: pushy-0.5.1/pushy/transport/local.py  
  inflating: pushy-0.5.1/pushy/transport/ssh.py  
  inflating: pushy-0.5.1/pushy/transport/smb/__init__.py  
  inflating: pushy-0.5.1/pushy/transport/smb/impacket_transport.py  
  inflating: pushy-0.5.1/pushy/transport/smb/native.py  
  inflating: pushy-0.5.1/pushy/util/__init__.py  
  inflating: pushy-0.5.1/pushy/util/_logging.py  
  inflating: pushy-0.5.1/pushy/util/_zipwalk.py  
  inflating: pushy-0.5.1/pushy/util/askpass.py  
  inflating: pushy-0.5.1/pushy/util/clone_function.py  
  inflating: pushy-0.5.1/pushy/util/redirector.py  
$ cd pushy-0.5.1/
$ sudo python setup.py install

Verify that pushy has been well installed:

$ python
Python 2.7.3 (default, Apr 20 2012, 22:39:59) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pushy
>>> 
``` 

Finally install ceph-deploy

```bash
$ ./bootstrap
...
...
...
$ ln -s `pwd`/ceph-deploy /usr/bin/ceph-deploy

Verify that everything works:

$ ceph-deploy --help
usage: ceph-deploy [-h] [-v] [--cluster NAME] COMMAND ...

Deploy Ceph

optional arguments:
  -h, --help      show this help message and exit
  -v, --verbose   be more verbose
  --cluster NAME  name of the cluster

commands:
  COMMAND         description
    new           Start deploying a new cluster, and write a CLUSTER.conf for
                  it.
    install       Install Ceph packages on remote hosts.
    mon           Deploy ceph monitor on remote hosts.
    osd           Deploy ceph osd on remote hosts.
    disk          Prepare a data disk on remote host.


II. Ceph cluster in a minute!

II.1. Install Ceph on a new server

In this example, I used two machines:

  • ceph-deploy provisionning server
  • one node

ceph-deploy will attempt to connection through ssh to the specified node. Be sure that you can SSH passwordless from your ceph-dpeloy server to every ceph node.

$ ceph-deploy install ceph-1
OK

The output is pretty explicit, a more verbose mode can be enabled with the -v option.

I don’t want to go too deeper into the installation process since the Github documentation is complete.


This was a really short introduction to the successor of mkcephfs. Some features are missing but it’s work in progress. At the end, Tommi Virtanen has made an amazing job and the tool appears to be very promising.

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