You can find product details and the latest AMI IDs on the Amazon Linux AMI page.

Please upgrade to Amazon Linux AMI 2017.09 from earlier versions!

While older versions of the AMI and its packages will continue to be available for launch in Amazon EC2 even as new Amazon Linux AMI versions are released, we encourage users to migrate to the latest version of the AMI and to keep their systems updated. In some cases, customers seeking support for an older version of the Amazon Linux AMI through AWS Support may be asked to move to newer versions as part of the support process.

To upgrade to Amazon Linux AMI 2017.09 from 2011.09 or later, run sudo yum clean all followed by sudo yum update. When the upgrade is complete, reboot your instance.

Remember that the Amazon Linux AMI repository structure is configured to deliver a continuous flow of updates that allow you to roll from one version of the Amazon Linux AMI to the next. Please consult our lock-on-launch FAQ for a discussion of how you can lock an instance (either a new launch or one already running) to a particular version of the Amazon Linux AMI repositories.

As mentioned in last release notes for AMI 2016.09 we have performed additional cleanup, and deprecated the following packages: gcc44, mysql51, openssl097, php (php-5.3), php54, postgresql8, ruby18, ruby19, ruby21, ruby22, java-1.6.0-openjdk and tomcat6.

Released on November 6th, 2017.

  • We've updated the base AMI to include kernel 4.9.58 version containing updates for ena 1.4.0, EC2 P3 instance support, and security updates

The Kernel has been updated to latest 4.9.y stable tree, new ENA driver 1.3.0 as well as support for TCP Bottleneck Bandwidth and RTT (BBR) which improve network performance.

BBR is not enabled by default. You can enable it on your EC2 Instance via:

$ sudo modprobe tcp_bbr

$ sudo modprobe sch_fq

$ sudo sysctl -w net.ipv4.tcp_congestion_control=bbr

Persistent configuration should look like:

$ sudo su -

# cat <<EOF>> /etc/sysconfig/modules/tcpcong.modules  


> exec /sbin/modprobe tcp_bbr >/dev/null 2>&1

> exec /sbin/modprobe sch_fq >/dev/null 2>&1


# chmod 755 /etc/sysconfig/modules/tcpcong.modules

# echo "net.ipv4.tcp_congestion_control = bbr" >> /etc/sysctl.d/00-tcpcong.conf


SSM Agent is now installed by default in the base Amazon Linux AMI. The SSM Agent allows you to use RunCommand in order to configure and run scripts on your EC2 Instances. See Amazon EC2 Systems Manager documentation for more details.

Many of our packages have been re-synced to newer upstream versions.

Postgres 9.6, Ruby 2.4, Python 3.6, Mysql 5.7, Tomcat 8.5, Nginx 1.12.1, Squid 3.5, OpenMPI 2.1, GCC 6.4

Python 3.6, the latest in the Python 3.x series, has been integrated with our existing Python experience and is now available in the Amazon Linux AMI repositories. This includes the associated virtualenv and pip packages, which can be used to install and manage dependencies. The default python version for /usr/bin/python can be managed via alternatives, just like our existing Python packages. Python 3.6 and the associated pip and virtualenv packages can be installed via sudo yum install python36 python36-virtualenv python36-pip.

We've also added the latest in the Ruby 2.x series, Ruby 2.4, to the package repositories. You can install this new Ruby package with sudo yum install ruby24.

The Amazon Linux AMI now uses OpenSSL 1.0.2k. As a result of this improvement, we are happy to announce a much-requested feature: The HTTP/2 protocol is now supported by our httpd24, nginx, and curl packages.

We've integrated newer versions of some of our database offerings into the Amazon Linux AMI repositories: Postgres 9.6 and MySQL 5.7 are now available and can be installed via sudo yum install postgresql96 and sudo yum install mysql57 respectively.

Many customers have asked for an updated Squid package. Squid 3.5 is now available in the package repositories.

The Amazon Linux AMI 2017.09 repositories include the Nginx 1.12 release. You can install or upgrade to the latest version with sudo yum install nginx.

We've upgraded our Tomcat 8 package to provide Tomcat 8.5. Tomcat 8.5 provides a replacement for Tomcat 8 which has pulled forward many new features from Tomcat 9.0. You can install or upgrade to Tomcat 8.5 with sudo yum install tomcat8.

We've added GCC 6.4 to the Amazon Linux 2017.09 package repositories. This package can be installed alongside our existing GCC packages via sudo yum install gcc64.

In order to better support HPC workloads, we've updated our OpenMPI package from version 1.6.4 to OpenMPI 2.1.1. As part of this update, we are also providing OpenMPI 1.6.4 compatibility packages in order to allow you to continue building and running your existing OpenMPI applications.

Since we've moved from tomcat 8 to tomcat 8.5, there may be a few minor backwards incompatibilities.

We'd like to remind you about our SNS topic which can keep you informed of our regular Amazon Linux AMI releases. To begin receiving notifications about our new AMI releases, please subscribe from the us-east-1 region to our SNS topic:


This compatibility table shows which Amazon Linux AMI flavors are recommended for each EC2 instance type.

The Amazon Linux AMI FAQs is updated with both general and technical topics.

We use the Amazon EC2 Discussion Forum for bug reports, feature requests, and package requests. These forums are monitored by AWS Developer Support as well as the Amazon Linux AMI engineering team.

We are actively hiring Linux Systems Engineer, Linux Software Development Engineer, and Linux Kernel Engineer positions!  :-)