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some newbie questions

 

Hi all!

Just joined the mailing list. I'd like to do some development on the project
(probably Nova).  Some questions regarding how to start:

Q1. I'm trying to setup Nova in a virtual environment -
http://uksysadmin.wordpress.com/2011/02/17/running-openstack-under-virtualbox-a-complete-guide/
-
on a Windows host. I've successfully started an instance and assigned it a
network address:

aron@cloud1:~/openstack/cloud/creds$ euca-describe-instances
RESERVATION r-k6e14a5w myproject default
INSTANCE i-00000001 ami-0a892947 172.241.0.1 10.0.0.3 running openstack
(myproject, cloud1) 0 m1.tiny 2011-08-02T20:28:46Z nova

but I'm unable to connect to the address (neither from the guest nor from
the host):

>From the guest:

aron@cloud1:~/openstack/cloud/creds$ ping 172.241.0.1
PING 172.241.0.1 (172.241.0.1) 56(84) bytes of data.
>From 172.241.0.1 icmp_seq=2 Destination Host Unreachable

aron@cloud1:~/openstack/cloud/creds$ ping 10.0.0.3
PING 10.0.0.3 (10.0.0.3) 56(84) bytes of data.
>From 10.0.0.1 icmp_seq=1 Destination Host Unreachable

>From the host:

C:\>ping 172.241.0.1

Pinging 172.241.0.1 with 32 bytes of data:
Reply from 172.241.0.1: Destination host unreachable.

Pinging the guest from the host and vice versa is ok, e.g.:

C:\>ping 172.241.0.101

Pinging 172.241.0.101 with 32 bytes of data:
Reply from 172.241.0.101: bytes=32 time=1ms TTL=64

What may be wrong?

Q2. When I do succeed to setup the environment, can anybody to point me to
documentation on how to write simple code for OpenStack? Something along the
lines of "Hello, world!", but using some features peculiar to cloud
applications.

Q3. I have no technical knowledge about the cloud at all. Can anybody
suggest a learning path so that I quickly can gain the basic necessary
general and specific knowledge to start coding (i.e. first read the code and
know what's flying, then fix some bugs, etc.)?

Thanks in advance, -Aron

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