We noticed that one of our Java applications that is deployed on Elastic Beanstalk has hourly service interruption. Each outage only lasts for about 40 - 60 seconds. By looking at the CloudWatch, the ELB has intermittent 5xx errors every one hour, like 09:01, 10:01, 11:01 ... After some investigations, I found it out that it … Continue reading Hourly Intermittent Elastic Beanstalk Service Interruption
Continue with yesterday's good news, another exciting new feature on EBS - Elastic Volumes. It allows you to dynamically increase capacity, tune performance, and change the type of any new or existing current generation volume with no downtime or performance impact. Check it out: https://aws.amazon.com/ebs/details/#elasticvolumes
It was painful that you are unable to change the instance profile for existing EC2 instance. A good news is that you CAN now via AWS CLI!! Here is a step by step example.
My new tool - Opsgenie schedule generator. It is a tool that can create Excel spreadsheet based on the Opsgenie schedule. And it also has a Lambda version, which allows you to deploy it with AWS API gateway, so you can have your RESTful API for your roster schedule. Note: In my practise, there are two … Continue reading OpsGenie Schedule Generator
Can AWS default VPC be deleted? I checked AWS documentations and it seems the following two are against each other. So I opened a ticket with AWS, and here is their answer: Technically yes, you can delete default VPC's and create a non-default VPC. Some services such as CloudFormer to create CloudFormation templates do searches … Continue reading Can AWS default VPC be deleted?
Just found out that even with the same version number, the stack solution release date could be different in different region. Therefore, the stack name for the same version could be different across regions. For example, solution stack java 7 tomcat 7 v1.1.0. In ap-southeast-2 region, the stack name is 64bit Amazon Linux 2014.09 v1.1.0 running … Continue reading Elastic Beanstalk – No Solution Stack named … found
By the time of writing, OpenShift V3 comes with poor monitoring capabilities. The build-in monitoring only checks the metrics of Memory/CPU/Network, and it does not even support alerting! And the lowest granular level only down to last hour. So you have to build your own monitoring if you want to keep close eyes on your … Continue reading OpenShift V3 Persistent Storage Nagios Plugin