Failover Or True Clustering
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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Jul 20, 2008
I heard many webmaster said that softlayer is better hosting on management. is that true?
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Jan 3, 2009
I have been running my sites on dedicated servers from The Planet for 4 years now. I go through about 500,000 page views per day with a fairly intensive web app (1000+ queries/s). Mosso keeps coming up and it is really interesting me. The promised peace of mind would be a relief and I often have trouble with site lag during peak times even with fairly high end servers. I am wondering if Mosso could work for me or if it is just too good to be true.
I searched the forums, but most of what I found was from 2006 when it first came out, wondering if I can get any info from people who have had experience or heard things more recently. I am really interested about loading times. I read from a lot of people that they experienced slow load times for pages (again these posts were at least a year old), but I viewed some sites hosted on Mosso and they seemed quite fast to me.
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Oct 14, 2008
Just signed up for a new FutureHosting VPS last night. Their pricing is very good, and the reviews generally kind to them on WHT.
I paid for the $44.99 account with 30 domain Plesk. They have a 35% discount on at the moment that made the package very tempting. Guarantees 768mb RAM, 30gb disk space etc.
Account activated several hours ago.
Took me 1-2 minutes to establish an SSH connection and authorization.
Trying to login to Plesk control panel for the first time has taken 6-7 minutes and it's still loading as I write this.
Load average: 2.01, 1.51, 0.82
Mem: 786432k total, 91000k used, 695432k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 0k cached
Note all I'm doing is running top and trying to access Plesk.
This doesn't look too impressive to say the least.
I know this happens from time to time with most VPS solutions. I've probably been unlucky that I've hit a spike in server load at the precise moment I tried to use the account for the first time.
But anyone have any experiences with FutureHosting that suggest this could be an ongoing problem?
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Apr 3, 2008
looks to me like they've stopped renewing domains; everything for me is intact but shortly after the renewal date the domain name doesn't work and the email addresses that come with the service don't work. i had 5 different emails for support for them, none of them work; ditto for any support phone numbers. Too bad, had 2 years of no problems.
i've contested the last payment made through paypal, don't expect that will do much good. don't really care, except it's a nuisance and some $ to move on. i also have a personal web site with them and that's working fine, probably will die when the year is up. i'm looking through the other services to find a safe inexpensive one.
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Dec 10, 2008
We just recently were kind of forced to go from a true dedicated server to a VPS type server and my question is a simple one.
When it comes to SQL databases is the VPS powered server just a secure as a dedicated type server?
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Aug 12, 2007
which advertises unlimited bandwidth and unlimited space for only 3.95 a month!?
So their website is unlimitedhostweb dot com
Does anyone have experience with this company and do they really deliver what they advertise for that insane price?
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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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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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Apr 6, 2009
I've never used windows hosting before but I have just taken over hosting a site for a new client and the website is written in ASP. One of my developers has installed the website and back-end on a Webfusion shared windows hosting account, the site runs okay but there is an admin section that isn't working at the moment as the script uses something called 'aspcompat'.
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Jun 2, 2008
Are there any hosts on the net with reasonably priced true multi site hosting*?
I'd host something like 5-6 small wordpress & blog sites, no special diskspace or bw requirements.
I know Site5 offers something like this, but I'd like something with over 80% uptime
(* By this I mean each site should have its own cpanel & the sites should be completely separate, due to the fact that I'm lazy & don't want to set up domain pointers or whatever they are called.)
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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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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 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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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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Oct 15, 2009
Looking for a dedicated unmetered server to stream movies and audio for over 500 visitors a day. Anybody knows any place that is good?
Also, what kind of hardware specifications would be OK for me - in terms of speed and memory? And would we be OK with a 10mbit port or 100?
Would I survive on a dedicated server with a shared bandwidth?
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Mar 16, 2008
Does anyone use Acronis True Image Server Worksation Edition instead of the expensive Server Edition ?
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Apr 19, 2007
I am trying to get my own set of ips from ARIN, and I need to qualify under the multi-home. My understanding of this setup is that I have 512 or more ips that I am using and that I have multiple routes in from the internet from at least 2 providers. Right now where I am coloing at I just have servers and no routers (only the ones that are provided by the co-location). In order to setup a true multi-home for my org will I need to have my own routers/switches and such to accomplish this?
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Aug 10, 2007
Recently I saw an advertisement about Surf Speedy Servers [url] and I am interested in one of their VPS servers.
[url]
However when I searched for reviews in WebHostingTalk and other websites, I got only REALLY bad and REALLY good reviews regarding Surf Speedy Servers (mostly at webhostingjury.com).
Can you tell me if you had any good or bad experience with Surf Speedy, and what are their problems?
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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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Nov 26, 2008
We are seeking for a new dedicated servers company.
Actually we have 2 windows servers(1Database
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Dec 4, 2007
Just wondering if there is some 'plugin' for MRTG which will e-mail or send an sms if certain conditions are true (bandwidth exceeded on some server /device)?
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May 11, 2008
It seems the HighPoint-RocketRAID 3120 is the cheapest 2 port hardware SATA2 RAID out there with advertised windows, linux, freebsd and mac support based on Marvell IOP and 128MB RAM. They say the drivers have been backported to centos redhat/kernels already.
Does anyone have any experiences with this card?
References :
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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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