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18

Mnn, you're not really confusing things, or at least you're not more confused than many other people are about "cloud computing". Cloud computing (CC) has become one of those trend-words, fashionable words that get used in lots of different circumstances. To me, cloud computing just implies a service somewhere between Infrastructure as a Service and ...


8

I just wanted to throw this out there, as in my other answer to a Cloud hosting question: "Cloud hosting" is just a re-branded VPS, most cloud solutions scale in no way. You could argue this on several points, but this is what it boils down to. The one thing that I have seen more and more "Cloud" providers offer is instant provisioning of servers - this ...


6

You should let Google handle the mail reception / sending if your cloud should not take care of it. The MX DNS type is specific to mail and conveniently indicates (with priorities) which server will actually handle mail reception for a given domain. Thus avoiding the need to specify a mail server / subdomain. But it may work also without the mail. prefix, ...


6

I work for Rackspace, and I can help. Take a look at Cloudfuse (https://github.com/redbo/cloudfuse). It enables you to mount your Cloud Files container as a volume for storage and retrieval of static content. There's a good tutorial at http://sandeepsidhu.wordpress.com/2011/03/07/mounting-cloud-files-using-cloudfuse-into-ubuntu-10-10-v2/. It's important ...


6

Some security defenses: OSSEC IPtables firewall (white list instead of blacklist) SSL for phpmyadmin and certain other pages where you use login data Virus scanner like ClamAV update your machines daily The first one is a well documented Intrusion Detection System the second one is a tool to make firewall rules, it runs on top of netfilter. Backups ...


6

You need IPsec, but not in Tunnel (VPN) mode. You want to use IPsec in transport mode. Microsoft makes this comparatively easy to set up and manage servers with the combination of Active Directory group policy and certificate services. On *nix... you've got quite a bit of scripting to do, and lots of reading.


5

Our support team can help you determine whether this is expected for your account - http://www.rackspace.com/support/. Thanks! Jeremy Wasner Rackspace Hosting


5

You can use the "s3cmd" utility with the "sync" option, although I stumbled on your question because I'm trying to figure out if this syncing mechanism is screwing up my duplicity backups.


4

Most 'cloud' providers give you IaaS. That means that you get a set of virtual machines that you're free to manage at will. In short, these are just VPS services, with the added facility of an API to create new servers when you want. Sometimes you can tie that API to some simple metrics (CPU load, traffic, etc), making it a little easier. But it's not ...


4

I was having the same problem so I whipped up a little program specifically designed to mirror one S3 bucket to another; I call it s3s3mirror. I did try the "s3cmd sync" approach first, but I had a bucket with hundreds of thousands of objects in it, and "s3cmd sync" just sat there, not doing anything but consuming more and more memory until my system died. ...


4

If what you get after putting the .tar.gz back together and unpacking it results in a disk image, then you should be able to recover files from it. To begin with, for best results you should be working from a Linux system, with plenty of drive space available (50GB or more). I'm not sure if this is even possible with Windows. First put the file back ...


4

Choose option 2 and then use a rackspace loadbalancer that does the following: If varnish cache is up and alive direct all traffic to the varnish instance If varnish is down load balance between the two remaining webservers This prevents you from building a single point of failure but you need a reliable healthcheck in your loadbalancer configuration.


4

You would always backup your files. A CDN keeps a cached copy of your static files at various points on the internet to facilitate a faster load time, but this cache is ephemeral and usually you can't access it or the history of it directly. It is definitely not a substitute for proper backups.


4

There isn't a way to download the server images currently. What you can do right now is create an image of your server (which gets stored in the Saved Images section), then restore the image from there. This isn't what you're asking for, but that's the limit right now. The image storing is part of OpenStack projects called Glance and OpenStack Swift ...


4

There is a chance that this space is reserved for root user. Please check out how much space is reserved for root,with: tune2fs -l /dev/xvda1 This will give you the block count reserved for root user, multiply it by the block size and you will get the size of reserved space (in bytes). You can modify the reserved space with: tune2fs -m 1 /dev/xvda1 ...


3

Two lists of IaaS providers: www.cloudorado.com - it is actually a price comparison for cloud computing, but could be limited to a list of providers www.cloudharmony.com - they also provide benchmark for subset of the list


3

I am actually the developer of the Zipit Backup Utility. I just happened to find this. For restoring your site it should be fairly easy. You should have two files in their respective containers. 1 for the database and 1 for the files. You will need to extract the files archive locally. You will then have the timestamped folder and inside you will see the ...


3

Your server's HTTP access logs should show you what their scan did. That's the first place you should be looking. It ought to stick out as a major anomaly, in contrast with your normal logs. I am a little concerned when you say they scanned your "domain". Presumably they resolved a hostname in your domain to an IP address and scanned that. It would be ...


3

Since you're using HTTP between your instances the simple solution to prevent any potential snooping of your data on the wire is to switch to HTTPS. It's designed to allow secure communication over an untrusted network, which is exactly what you've got with the shared private Rackspace network. Here are some Ubuntu docs to get you started: ...


3

Calculating cloud-costs is simple on the surface, but complex once you get to the spread-sheets. The simple part is you need to know 5 things: How many servers you need What their duty cycle is (probably 24/7 from the sounds of it) What kind of IO you do How much space you consume What kind of bandwidth you need to the internet (or VPC if you're doing ...


2

This question is not going to really be answerable by anyone other than Rackspace, but in the general case: If you have a hardware failure that causes data loss or corruption, there are three basic options available to you. Restore from a backup. This is generally the best option. It's the cheapest, fastest way to get your data back and your system ...


2

You will need a certificate for cdn.domain.com. You can't use a CNAME because when the browser gets the cert for cxxx.ssl.cxx.rackcdn.com instead of cdn.domain.com, it'll throw up an error because the cert doesn't match the URL you put in. And when doing a redirect within apache, the redirection is happening after the SSL session is established (and the ...


2

Which word in the sentence Please contact your Internet service provider since part of their network is on our block list. didn't you understand? Contact Rackspace and bother them. Then contact Hotmail and bother them. Or better: Let Hotmail talk with Rackspace. How can we mediate between those two parties?


2

check out Cloud Migrator service by CloudBerry Lab. May become a solution for you.


2

It looks as though the URL you are using needs to be modified just a bit. If you look at the below example the URL is slightly different, in that it uses action instead of createImage after the server UUID. You would also want to use v2 as well in the URL to make the call. Example: curl -X POST -H "X-Auth-Token: AUTH-TOKEN" -H "Content-type: ...


2

Another great way to track your memory usage would be to install sar on your linux box. If you're using debian it can be listed as sysstat. Using sar -r will give you a picture of what's going on in your memory and network statistics. Lindsey


2

Once you have setup the apache virtual server, just make the directory it forwards to the directory phpMyAdmin lives in. General Apache Virtual Server Config: DocumentRoot "/usr/share/phpmyadmin" ServerName phpmyadmin.example.tld <Directory "/usr/share/phpmyadmin"> allow from all Options +Indexes </Directory> Hope this helps and DFTBA. :)


2

If you wish to break cloud vendor lock-in, you should consider Cloudify. We run nightly Cloudify test suites on Rackspace, Amazon EC2 and HPCloud or even on bare metal using standard images provided by each of the cloud providers. Each application installs and manages itself on a clean image using predefined recipes. You can use these recipes also for ...


2

Yep, an rsync could work, and I've been involved in plenty of migrations where this method was used. However given that you have no real knowledge of the existing system, this might be the right time to take on a project to rebuild the machine from scratch the right way (documented, automated, reproducible... all the good things).


2

Creating a new image from an existing one is always a problem especially if you need to reverse engineer it, and even worse when you need to migrate to another cloud. Consider using tools like https://github.com/devstructure/blueprint to help you with reverse engineering your image into Chef recipe. Having a chef recipe makes it easier to migrate between ...



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