Thursday, April 07, 2011

How to update an auto scale launch configuration in Amazon EC

In order to update existing auto scale launch configuration in Amazon EC you need to create a new launch configuration using as-create-launch-config and then assign it to launch configuration using as-update-auto-scaling-group

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Mounting S3 bucket as a file system on Linux (Ubuntu)

In order to mount S3 bucket on Linux you need to install ssh file system (FUSE) libraries first.
Install: aptitude install build-essential libcurl4-openssl-dev libxml2-dev libfuse-dev comerr-dev libfuse2 libidn11-dev libkadm55 libkrb5-dev libldap2-dev libselinux1-dev libsepol1-dev pkg-config fuse-utils sshfs
Follow the instantiations in S3fs WIKI:
It was using http download, not SVN.
Create a mount point for the new file system (ex. mkdir /mnt/s3)
Mount the file system:
ex.: s3fs tmpname -o use_cache=/tmp -o allow_other /mnt/s3
this mount comes with option of using a tmp as a cache for S3 content, you can clean that cache as you feel fit.

You can also add your bucket to /etc/fstab

s3fs#mybucket /mnt/s3 fuse allow_other,url= 0 0

Update for mounting S3 bucket on CentOS 5.5 and other old distros.
CentOS 5.5 comes with old FUSE version 2.7.4 as latest in it`s repository.
You need to manually compile version 2.8.4 befor you can use S3fs.

Remove old FUSE
yum remove fuse fuse* fuse-devel

Install needed libraries:
yum install gcc libstdc++-devel gcc-c++ curl curl* curl-devel libxml2 libxml2* libxml2-devel openssl-devel mailcap

Download new FUSE from the Sourceforge:
wget ""

Untar and compile:

tar -xzvf fuse-2.8.4.tar.gz
cd fuse-2.8.4
./configure --prefix=/usr

make; make install

Configure FUSE in the system:
export PKG_CONFIG_PATH=/usr/lib/pkgconfig:/usr/lib64/pkgconfig/
modprobe fuse

Confirm that 2.8.4 is the version of FUSE displayed :
pkg-config --modversion fuse

Proceed with regular S3FS installation.

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