Thanks Chandan! On Wed, Jan 29, 2014 at 12:23 AM, Chandan Purushothama <[email protected]> wrote: > Hello Chris, > > The following link might help you with your efforts to deploy a Quick Cloud > using a single machine. > https://cwiki.apache.org/confluence/display/CLOUDSTACK/QuickCloud > > Thank you, > Chandan. > > -----Original Message----- > From: chris snow [mailto:[email protected]] > Sent: Tuesday, January 28, 2014 10:19 AM > To: [email protected] > Subject: Re: Internal DNS confusion > > Hi Shanker, > > I'm trying to build a self contained cloudstack virtualbox virtualmachine > similar to devcloud. > > I'm thinking that the virtualmachine will need to run its own internal DNS > server, but it probably only needs one entry, the hostname of the virtualbox > virtualmachine. > > Sorry if these questions are basic, but I haven't seen any topology examples > that describe everything on a single node, so I'm confused what is required. > > Many thanks, > > Chris > > > > On Tue, Jan 28, 2014 at 5:07 PM, Shanker Balan <[email protected]> > wrote: >> Comments inline. >> >> On 28-Jan-2014, at 12:47 pm, chris snow <[email protected]> wrote: >> >>> Thanks for the answers Shanker. Some more questions ... >> >> Sure. >> >> >>> Are internal DNS lookups performed only by the system vms? >> >> Dont know. >> >>> If no, what other parts of cloudstack perform internal DNS lookups? >> >> Dunno. Never had a requirement/reason to worry about it as my DNS >> servers are configured to resolve my RFC1918 assigned LAN devices and public >> records. >> >>> For example, does Management Server perform internal DNS lookups? >> >> The management server uses whichever nameservers you have configured >> in /etc/resolv.conf. >> >> I am not sure why you are digging deep into the DNS settings... its a >> very simple step while adding a new Zone. Just specify the same DNS >> settings as used by other devices in your network. >> >> I am however aware that there are MANY networks which still use IP >> addresses instead of hostnames. If your networks happens to rely on IP >> addresses, now would be a good time to create a DNS system :) >> >> >>> I'm trying to figure out 'when' I need to add new records to the >>> internal DNS server. >> >> If you plan to use hostnames instead of IP addresses for resources >> like hypervisors, storage devices etc, then you need to create DNS records. >> >> Alternatively, you can also add /etc/hosts entries. >> >> Depending on your DNS topology, you might have private internal DNS >> servers or public hosted DNS services (or both). >> >> >>> I guess one way for me to understand when I need to add a host record >>> to the internal DNS is by knowing what which parts of the Cloudstack >>> admin interface have fields that require a corresponding internal DNS >>> record. For example: >>> >>> Network > Add Guest Network > Network Domain >>> Domains > Add Domain > Network Domain >>> >>> Does each network domain above require an entry to be added into the >>> internal DNS? Are there any other places in the admin UI that >>> require records to be added to the internal DNS server? >> >> >> I believe Sanjeev already replied to this one. "network domains" are >> handled internally by CloudStack virtual routers. >> >> Regards. >> @shankerbalan >> >>> >>> On Tue, Jan 28, 2014 at 3:52 AM, Shanker Balan >>> <[email protected]> wrote: >>>> Comments inline. >>>> >>>> On 28-Jan-2014, at 1:21 am, chris snow <[email protected]> wrote: >>>> >>>>> When creating a new zone, I have to enter the address for Internal >>>>> DNS Servers. Extract from the Cloudstack installation manual: >>>>> >>>>> "Internal DNS 1 and Internal DNS 2. These are DNS servers for use >>>>> by system VMs in the zone (these are VMs used by CloudStack itself, >>>>> such as virtual routers, console proxies, and Secondary Storage VMs.)." >>>> >>>> The internal DNS server is usually the corporate DNS servers that >>>> provide "internal" DNS services for your LAN. Usually, these are >>>> RFC1918 IPs which is why its hosted "internally". >>>> >>>> >>>>> Question 1: Who manages the Internal DNS? Is an Internal DNS server >>>>> setup and managed by me, or is it setup and managed by Cloudstack? >>>> >>>> You (or your IT team). >>>> >>>> >>>>> Question 2: If Internal DNS is setup and managed by me, how should it be >>>>> setup? >>>> >>>> set it up any way you look. As long as the internal DNS server can >>>> resolve the hostname to IP addresses, you should be fine. >>>> >>>> >>>>> Question 3: If it is setup and managed by Cloudstack, when did it >>>>> get setup, and how can I find out what address Cloudstack is using >>>>> for this server? >>>> >>>> Its not managed by cloudstack. Most of the time, your internal and >>>> external DNS settings would be your corporate DNS server. >>>> >>>> If a public DNS server can resolve IP addresses for hosts in your >>>> LAN, you can use any public DNS server as your internal and external DNS >>>> resolver. >>>> >>>> Hope that makes sense. >>>> >>>> >>>> -- >>>> @shankerbalan >>>> >>>> M: +91 98860 60539 | O: +91 (80) 67935867 >>>> [email protected] | www.shapeblue.com | Twitter:@shapeblue >>>> ShapeBlue Services India LLP, 22nd floor, Unit 2201A, World Trade >>>> Centre, Bangalore - 560 055 >>>> >>>> Need Enterprise Grade Support for Apache CloudStack? >>>> Our CloudStack Infrastructure >>>> Support<http://shapeblue.com/cloudstack-infrastructure-support/> offers >>>> the best 24/7 SLA for CloudStack Environments. >>>> >>>> Apache CloudStack Bootcamp training courses >>>> >>>> **NEW!** CloudStack 4.2.1 >>>> training<http://shapeblue.com/cloudstack-training/> >>>> 18th-19th February 2014, Brazil. >>>> Classroom<http://shapeblue.com/cloudstack-training/> >>>> 17th-23rd March 2014, Region A. 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Any views or >> opinions expressed are solely those of the author and do not necessarily >> represent those of Shape Blue Ltd or related companies. If you are not the >> intended recipient of this email, you must neither take any action based >> upon its contents, nor copy or show it to anyone. Please contact the sender >> if you believe you have received this email in error. Shape Blue Ltd is a >> company incorporated in England & Wales. ShapeBlue Services India LLP is a >> company incorporated in India and is operated under license from Shape Blue >> Ltd. Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil >> and is operated under license from Shape Blue Ltd. ShapeBlue is a registered >> trademark. > > > > -- > Check out my professional profile and connect with me on LinkedIn. > http://lnkd.in/cw5k69
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