See the EC2 documentation on the subject. Run: wget -q -O – http://169.254.169.254/latest/meta-data/instance-id If you need programmatic access to the instance ID from within a script, die() { status=$1; shift; echo “FATAL: $*”; exit $status; } EC2_INSTANCE_ID=”`wget -q -O – http://169.254.169.254/latest/meta-data/instance-id || die \”wget instance-id has failed: $?\”`” Here is an example of a more … Read more
You have to choose “Custom TCP rule” in the dropdown. Then you will be able to change the port to 8080.
That URL (http://169.254.169.254/latest/dynamic/instance-identity/document) doesn’t appear to work anymore. I get a 404 when I tried to use it. I have the following code which seems to work though: EC2_AVAIL_ZONE=`curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone` EC2_REGION=”`echo \”$EC2_AVAIL_ZONE\” | sed ‘s/[a-z]$//’`”
UPDATE: There is now AWS pricing API: https://aws.amazon.com/blogs/aws/new-aws-price-list-api/ Orginal answer: The price lists are available in form of JSONP files (you need to strip off function call) which are used by the AWS pricing pages. Each table (and each tab for table) has separate JSON file. It is not an API maybe, but definitely computer … Read more
WARNING: The following will destroy ALL data on HDFS. Do not execute the steps in this answer unless you do not care about destroying existing data!! You should do this: stop all hadoop services delete dfs/name and dfs/data directories hdfs namenode -format Answer with a capital Y start hadoop services Also, check the diskspace in … Read more
No need to create a CNAME or do any forwarding – this is bad from the point of SEO and not recommended by Amazon. Even you should not point a record to IP directly – it will cause a lot of troubles in the future because IP can be changed any moment. The most elegant … Read more
listeners is what the broker will use to create server sockets. advertised.listeners is what clients will use to connect to the brokers. The two settings can be different if you have a “complex” network setup (with things like public and private subnets and routing in between).
First, you need to open HTTPS port (443). To do that, you go to https://console.aws.amazon.com/ec2/ and click on the Security Groups link on the left, then create a new security group with also HTTPS available. Then, just update the security group of a running instance or create a new instance using that group. After these … Read more
To have an instance terminate itself do both of these steps: Start the instance with –instance-initiated-shutdown-behavior terminate or the equivalent on the AWS console or API call. Run shutdown -h now as root. On Ubuntu, you could set this up to happen in 55 minutes using: echo “sudo halt” | at now + 55 minutes … Read more
Follow the steps that are described on this answer just instead of using the drop down, type the port (8787) in “port range” an then “Add rule”. Go to the “Network & Security” -> Security Group settings in the left hand navigation Find the Security Group that your instance is apart of Click on Inbound … Read more