Comments for Qugstart Blog

Comment on How to Set up DB server on Amazon EC2 with data stored on EBS drive formatted with XFS by faris

faris — Sun, 05 Sep 2010 12:34:56 +0000

Thanks a lot for your information!!!..

I’ve some simple questions.
1) How can I browse the EBS machine data from my putty.
2) I have choose public AMI Ubuntu 9.10 Karmic Alestic, ubuntu@ EBS boot. I am just confused, when I choose this AMI it has EBS and ebs instance. So I just confused what is the difference between instance store ans EBS instance type.

Thanks and regards,
Faris

Comment on How to Set up DB server on Amazon EC2 with data stored on EBS drive formatted with XFS by Qug

Qug — Fri, 03 Sep 2010 17:44:34 +0000

@faris – Thanks for stopping by.
S3 is not really meant as a filesystem, so its best use in your purpose is to store persistent backups of your database (either mysql dumps, or EBS snapshots).
I’ve never used RDS, but it looks like a pretty cool service that might be good for your needs. Since I am used to setting up my own Mysql servers, I prefer to do the setup myself. Also, if you use RDS, be aware of the higher costs associated, simply because it is a dedicated DB instance. You may be ok with running a DB server on the same instance was your web server.

That’s why I chose to attach an EBS volume to my server instance, and store all Mysql data on this EBS instance. EBS allows you to create quick snapshots for backup of your DB server.

Good luck!

Comment on How to Set up DB server on Amazon EC2 with data stored on EBS drive formatted with XFS by faris

faris — Fri, 03 Sep 2010 09:09:25 +0000

Nice blog…

I am very new to Amazon. I’ve created an instance for my server. Now I need to setup mysql for data storage.

I dont know about the EBS, S3 and RDS. I just gone through the documents for storage. Which is the best technique for database and how to start with it.

Comment on How to Set up DB server on Amazon EC2 with data stored on EBS drive formatted with XFS by Qug

Qug — Fri, 27 Aug 2010 14:49:33 +0000

@dion, No problem – hope this helps clear up your questions:

# Create EBS volume and attach it to the EC2 (as /dev/sdh in my example)
- If you are a beginner, the easiest way to do this is to go directly through Amazon’s Ec2 Interface. Simply log into your EC2 account, and create a new EBS volume.
Upon creating the EBS volume, you will be asked for a mount point to mount the volume. In my example, I chose “/dev/sdh”.
After you create the EBS volume in Amazon’s web interface, you must “attach” it to your Ec2 instance. This also can be done in Amazon’s web portal.

# Symlink the mysql directories so that mysql uses the mounted EBS drive –> i thought you’re still using storage from the instance with backup from EBS? how to set up so EBS will take the snapshot from the S3
- The EBS drive “appears” as part of your EBS filesystem once you have mounted it. So, it’s just like as if you had plugged in an external USB drive to your Ec2 instance.
In this step, all I did is to set up the single instance of MySQL (that is running on Ec2 instance) to point all its directories to the EBS volume, rather than the default filesystem.
This way Mysql is storing all data files and config files on the EBS volume, where it can be backed up easily to S3.

Hope this helps to clear up your questions!
Amazon web services might be a little confusing at first, but it will start to make sense once you poke around a bit.
Good luck !

Comment on How to Set up DB server on Amazon EC2 with data stored on EBS drive formatted with XFS by dion

dion — Fri, 27 Aug 2010 14:22:02 +0000

great post!
I’m new to this, so I appreciate if you could explain a little bit about some of the steps:
# Create EBS volume and attach it to the EC2 (as /dev/sdh in my example)

does this mean we’ll have two mysql running? on S3 and EBS?
Thanks. sorry for the beginner questions

Comment on Setup a Git Repository for Redmine by Redmine + Git » Development logs

Redmine + Git » Development logs — Tue, 10 Aug 2010 04:53:32 +0000

[...] Setup a Git Repository for Redmine [...]

Comment on Resolve a hostname from an IP address in Ruby (Reverse-DNS) by jax

jax — Fri, 30 Jul 2010 21:00:37 +0000

Hi, I found the solution why the second example doesn’t work. Try this code:

Socket.do_not_reverse_lookup = false
s = Socket.getaddrinfo(’66.249.67.49′,nil)
hostname = s[0][2]

Comment on How to mount an Amazon S3 bucket as virtual drive on CentOS 5.2 by Qug

Qug — Fri, 25 Jun 2010 18:29:58 +0000

@backtogeek :
Did you install curl and curl-devel via yum ? (yum install curl*)

Comment on How to mount an Amazon S3 bucket as virtual drive on CentOS 5.2 by backtogeek

backtogeek — Fri, 25 Jun 2010 17:58:02 +0000

yup that seems to be the accepted way however on 2 VM’s of CENTOS 5 and 1 VPS all I ever get after mounting is:

[root@xxxxxxx mnt]# ls
ls: reading directory .: Input/output error

it may also be worth mentioning to people who do not know better that you need to actualy create a bucket first in the AWS panel and with the latest versions of curl 7.20+ i belive you need to add a link to libcurl.so.4 e.g.

ln -s /usr/local/lib/libcurl.so.4 /usr/lib/libcurl.so.4

I am guessing I am doing somthing really simple wrong but I just cant figure it out this has had be beat for hours.

Comment on How to mount an Amazon S3 bucket as virtual drive on CentOS 5.2 by Ruslan Abuzant

Ruslan Abuzant — Tue, 11 May 2010 22:59:42 +0000

One more comment, you can combine my 2 comments if you wish.

libxml2 and curl libraries are needed to compile. They can be installed like this:

yum install curl*
yum install libxml2*

Have a nice day