Dns Clustering .. VPS Vs. Dedicated
May 24, 2009
I'm not into Dns Clustering that much all I know is some articles and threads about how to do it, and the benefits
Anyway I decided to give it a try 1st with minimum fees
so I want to host my Main domain website on a VPS, as it don't need much resources and using it as a Primary Dns Server
and use my current server as a Slave DNS server that is contain most of my client sites
It's logically possible as I see but..
Is there any Disadvantage? if exist what is it?
Do I have to make both on the same DC?
Will it affect my Slave DNS Server Performance, Stability and Load?
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Jun 20, 2008
Im going to start to plan to build a new hosting setup within my business and aim to slowly move away from the shared hosting scene and move into clustered (web hosting)
Now im not great with words so i am sorry if any of this doesnt make sence.
Im looking to build a setup using 5+ Dedicated servers, using a cluster config and using something like plesk on top to offer high availability hosting. As i understand it using a clustered setup will provide a much higher chance of keeping 99.9/100% uptime as it eliminates a single point of failure.
But what im un sure on and what ive not learnt about yet is what is needed to make this work, what kind of software is involved and how would the Hard-drive arrangement work. For example
If each server had 5 Hdd's in Raid5 totaling 1TB Space and there was a total of 5 servers, would there still be 1TB space overall of does it work slightly different to that?
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May 25, 2009
What are the pros and cons of setting of a DNS cluster over multiple VPSes?
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Apr 28, 2008
I just set up a cPanel DNS Cluster today. Followed the guide, and everything didnt according to my plan. As in, setup went fine, setting it up went fine too. But I do not think I understood how this solution works in real... or atleast I had assumed it to work in a different way.
So for my questions...
1) How and where do I edit the DNS Zones. On the local system or the DNS dedicated server?
2) How do I create nameservers for this dedicated DNS server? Not the registrar part, but the A record and NS record part.
3) Small doubt, not a big one. Does the DNS server have to be in stand alone mode or synchronized mode?
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Aug 25, 2007
I am trying to setup a server cluster for my client and was thinking about load balancer.
Currently he has 4 Servers and 1 VPS.
4 Servers are in the same datacenter while VPS isn't.
Now from my thoughts about the system load, I have decided to setup like this:
VPS being the load balancer
2 Servers being the Apache
1 Server being Storage server
1 Server being MySQL
This will be hosting two forums that has very high concurrent access.
Now the problem is VPS has only 200GB/mo bandwidth while he needs about 800GB total.
My question is is there anyway to load balance the servers without the traffic going
like this:
LoadBalancer-->Apache Servers-->LoadBalancer-->USER
If the traffic goes like that then VPS needs to have about 1600GB bandwidth and will have network bottlenecks.
I would like the traffic to go like the following:
LoadBalancer-->Apache Servers-->USERS
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Jul 18, 2007
I'm currently using Cpanel on all our web hosting machines (total of 6 machines). Each runs its own DNS but also uses the Cpanel cluster feature to sync between all machines.
This has got to the point where DNS updates will not stay, the machines get very lagged etc etc. Now I have put 2 more machines online to do nothing but DNS.
What is the best way to set this up?
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Sep 9, 2007
Our server is going down due to several reasons. We decided use load balancing or clustering solution. What are the main difference between load balancing and clustering?
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May 5, 2008
I am working on setting up a few servers that run cPanel and the usual software, minus any sort of DNS server. These servers are setup to sync all DNS records over to a cPanel "Dns Only" (ns1.domain.com), which in turn syncs all its records to a backup DNS server (ns2.domain.com).
In other words:
[Domain registrar]
| |
[NS1]--Sync-->[NS2]
|
(Sync to NS1)
|
Cpanel Web Server
Now, say something happens to NS1 and the sever goes completely offline (i.e. power supply dies, CPU goes bad, etc.), which of the following scenarios would actually happen:
1) Because the registrar lists both NS1 and NS2 as NS records, NS1 would time out and the DNS lookup would look to the secondary DNS (NS2) for the record.
2) The registrar would randomly give out NS1 OR NS2 because of round robin, and if NS1 is given to a client as the result of a DNS lookup, the site will appear down, however if the client happens to be referred to NS2, the site would appear online.
3) The site would be down no matter what.
So, if someone with knowledge on the subject wouldn't mind enlightening me as to which of those would actually take place in the event of a failure on NS1, and maybe some suggestions as to keeping the DNS truely "redundant", then I would greatly appreciate it.
And Im aware that there are many 3rd party services that will take care of the DNS records and make them redundant (DYNDNS, DNSMadeEasy, etc) But I would prefer to keep the DNS in our full control.
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Feb 28, 2008
Is there any alternative to ZendPlatform's session clustering? ZendPlatform seems to be very easy to manage.
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Oct 23, 2007
I have been searching and searching for a solution. We are currently using one single vps to host some of our clients. We are finding more and more that we need to have some redundancy.
I have looked at using DNS failover using RSYNC/mysql replication etc with two servers, but just dont like the idea.
I have also looked at hosts like imountain etc that use h-sphere. I dont like this setup because services are split onto single machines. For example mail is done on one single server, therefor if that server is down, mail is down.
What I am looking for:
I am trying to stay in a budget of 150/month or less.
I would like to get one of the two options here:
option 1: two vps's or dedi's that technically act as one(a true cluster) then on top of that is OS and control panel and done. This solution doesnt allow for whole datacenter outages, or network issues.
option 2: Two geographically placed vps or dedi's that are somehow either load balanced, or failover.
Ultimately our goal is to have high uptime, but we dont really have much server load.
Basically failover is ok as loads are always low anyway, but if we are paying big $$ it would be nice to have it load balanced.
Please let me know if my expectations are way to high or my price is way too low. I need to find a solution here somehow and if I cant find anything will most likely just go with DNS failover.
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Nov 6, 2007
I am going to build a clustering system for a customer. It's around 15 servers running apache, mysql and mail. Wondering which switch do you recommend for that? I am using a HP Procurve 2524 for another smaller system, but customers face to slow performance *sometimes*
For the feature, dont need much. Dont need routing feature (Layer3 switch?), just to connect all of them into a clustering system.
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Mar 29, 2009
I have a 2 cPanel DNSonly cluster setup for all our hosting operations.
However, we are adding a Windows Domain Forest (for Outlook "push-mail") for this the windows server needs to be its own DNS server. We are also planning to host sites on the windows server (no control panel).
Is there any way that I can allow cPanel to use Windows DNS as the new "cluster" and update/delete/add records of DNS to the windows machines?
Same would apply to this question, we are thinking about adding a Directadmin test box, but we want to keep our NS1 and NS2 cluster so they all work with it. Is it possible? What is the feature called if you can't elaborate on it so I can research it?
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Sep 21, 2007
So would the load times be noticeably longer if I ran load balancers, and then had my web servers nfs mounted to file servers / san and connecting over the network to database servers? It seems like a lot of network overhead to deal with.
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Jun 14, 2008
I'd like to get your recommendations on how I should approach this problem. I posted this in another part of the forum, but I feel that this is a more appropriate place for it.
Problem:
How to handle large amounts of traffic with for a social network website? If a user uploads a photo or video, how does it become accessible on all of the server? If traffic is expected to be about 500,000 visitors a day, how many machines do you think I should use?
Possible Solution:
I've come up with the following possible infrastructure.
One load balancer. The load balancer has 3 PHP/Apache servers behind it. Behind each of the PHP/Apache servers is a (slave) MySQL server, from which data is read. Behind the slave MySQL servers, there is 1 master MySQL server, which handles all of the database writes. The master MySQL and slave MySQL servers are synced up, so data is up to date.
The actual photo and video files are not stored in the database, only the links to them is stored in the database (to keep the database small). The photo and video reside in a central location (like a SAN or NAS), which is accessible by all of the 3 PHP/Apache webservers.
Questions:
1. How many machines do you think will be able to handle photo and video uploads for 500,000 visitors a day?
2. Is having a SAN with Terabytes of RAIDED disk space an available option?
3. If a SAN or NAS is not an option, does anyone have any ideas on how to make sure all of the web servers have access to the same photos and videos? Is rsync a viable solution?
4. Which hosting provider do you think I should go with?
5. Is clustering what I need? What is clustering and how will it address my concerns?
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Jun 14, 2008
I'd like to get your recommendations on how I should approach this problem.
Problem:
How to handle large amounts of traffic with for a social network website? If a user uploads a photo or video, how does it become accessible on all of the server? If traffic is expected to be about 500,000 visitors a day, how many machines do you think I should use?
Possible Solution:
I've come up with the following possible infrastructure.
One load balancer. The load balancer has 3 PHP/Apache servers behind it. Behind each of the PHP/Apache servers is a (slave) MySQL server, from which data is read. Behind the slave MySQL servers, there is 1 master MySQL server, which handles all of the database writes. The master MySQL and slave MySQL servers are synced up, so data is up to date.
The actual photo and video files are not stored in the database, only the links to them is stored in the database (to keep the database small). The photo and video reside in a central location (like a SAN or NAS), which is accessible by all of the 3 PHP/Apache webservers.
Questions:
1. How many machines do you think will be able to handle photo and video uploads for 500,000 visitors a day?
2. Is having a SAN with Terabytes of RAIDED disk space an available option?
3. If a SAN or NAS is not an option, does anyone have any ideas on how to make sure all of the web servers have access to the same photos and videos? Is rsync a viable solution?
4. Which hosting provider do you think I should go with?
5. Is clustering what I need? What is clustering and how will it address my concerns?
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May 23, 2008
I currently have a server (Xeon 1x5310, 4gb RAM, 4x500gb hdd in Raid 10) with Windows 2003. Now do to a project I'm looking at installing Windows 2008 and upgrading to 2x5310 and 16gb of RAM on my server.
I'm looking to create a virtualized test environment for development of a new web service I'm working on. What I'm looking to develop right now is 2 file servers, 3 web servers, 3 MS SQL database servers and 1 DNS server (would prefer but not sure if hardware can handle it. Virtualization would be ideal as this is very similar to what we believe will we have when we launch the service.
I have a few questions I'm hoping you might be able to answer:
1) With the upgraded hardware specs, should it be able to handle the load if I assign each virtual entity 1 core with 2gb of RAM each?
2) I would like to create each of the multiple servers in a cluster (ie cluster of webservers) as this is how it will be in production. But, I've never worked with clusters before so:
a) where can I learn about clustering windows 2008 servers?
b) is this possible to do in a virtualized environment?
3) How does MS work the licensing? I want to have each server running Windows 2008 and 2-3 of them running SQL Server 2005.
a) Do they charge extra for each virtualized server?
b) Does this mean I have to purchase 3 complete copies of SQL Server or is there a way I can pay a low license fee for use in a non-commercial, non-production environment?
4) Does anyone see any problems with this setup or have any suggestions for me?
* I do have money available to spend on a good solution, so if you have suggestions that cost please let me know. I just thought virtualization would be the way to go as the project will be in development for at least a year with no public access.
** I realize that Hyper-V hasn't been released yet (that I know of) so information on it might be limited
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Mar 26, 2009
Some information about my forum:
I run a VBulletin forum with - 575,614 post, 14,369 members and 2.9 million page views per month. On average there are 300 - 400 people on the site.
The server right now is a Linux CentOS VPS with 1.1 gigs of memory. The hosting provider keeps telling me that I need a dedicated server.
Question # 1 - In your opinion - do you think its time for a dedicated server?
The server I am looking at has these stats:
E8300
2 GB RAM
250GB HD
cPanel
Management
The price I was given is pretty good. So the offer is going to be hard to pass up.
Question # 2 - Has anyone here used Future Hosting for their dedicated server solution?
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Sep 8, 2008
I have an account that is going from a shared hosting account to a dedicated with theplanet and I want to transfer it. Concerns I have is that the site is using an SSL. What things do I need to watch out for when transferring. Since I don't have root access I will have to do this transfer with the account function, correct?
This site has a database and SSL, so I thought it would hopefully be easier to use the cpanel account migration tool
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Sep 3, 2007
What is the difference between Dedicated Virtual vs Regular Dedicated Server?
Also what are the pros and cons of going with Virtual?
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Apr 1, 2008
to move from shared windows hosting to Dedicated windows hosting. This will be our first dedicated server and experience with dealing it too.
Someone suggested me Rackspace. But they were charging premium rates 440 USD for entry level windows server.
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Apr 7, 2009
I use shared web hosting service to get my website online. I'm wondering how many people use dedicated servers or virtual private servers instead and pay from $20 to several hundreds of dollars? Will I face any big problem with shared web hosting package which makes me choose dedicated servers?
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Jan 25, 2009
i would just want to get your inputs if which server performs faster or better:
VPS running in Core2Quad @ 2.40GHz with 12 gb of ram
guaranteed 1.7 Ghz CPU
guaranteed 1 GB memory burstable to 2 GB
170 GB disk
or
Dedicated server
Celeron 1.7 GHz
1 GB memory
160 GB disk
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Oct 27, 2008
What would you classify this as? Seems like it's the in-between for VPS and dedicated with completely reserved resources and much higher storage capacities than VPS can offer.
Personally, if it runs a hypervisor or container is a VPS but this sure does blur the lines a bit.
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Sep 7, 2008
I am currently using a shared hosting but due to increasing traffic and server load my existing host is not able to provide reliable services and I am planning to upgrade my hosting service.
While I was searching for Dedicated Servers, I learnt about Virtual Dedicated Servers but I am not very sure about their reliability? Are Virtual Dedicated Servers useful? My website current serves over 2500-3000 visitors a day resulting in 30,000 pageviews and I am expecting the traffic to grow by atleast 2 folds in the next few months as I start some PPC campaigns and Email Marketing for my website. Can a Virtual Dedicated Server cater such needs assuming my website to be more of less dynamic website written in php?
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Nov 6, 2008
VPS or Dedicated from SDX
I'm running a Joomla site with about 15,000 page views/day on JaguarPC at present. Its a mainly passive content - no message boards or applications. They disabled my site stating that CPU/Database use is too much. Should I move to a VPS or Dedicated server now ? Budget range $50-75/month.
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Mar 29, 2009
I am tossing around the idea of moving from my dedicated server to a VPS server. This is due to my ever growing server needs.
Currently, I use a small percent of a $400 softlayer server, about 500gig disk space and 2tb bandwidth. Is this too big for a VPS? Is there anything special I need to take into consideration for the move?
I was also wondering if other VPS's on the same server would slow down mine or if I would just allocated a % witch would be reserved for me.
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May 30, 2009
I know what is a dedicated server and a VPS well everyone knows that but what is a VDS is that the same and a VPS
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