Run Elasticsearch Cluster on Spot Instances


Running Elasticsearch cluster is not cheap, as it generally requires a couple of high spec servers to provides both performances and reliabilities. Below is a typical 3 nodes Elasticsearch cluster that is running on AWS: 3 nodes, one in each availability zone. each node is both master and data node, and it is formed by ec2 … Continue reading Run Elasticsearch Cluster on Spot Instances

Hourly Intermittent Elastic Beanstalk Service Interruption


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

Elastic Beanstalk – No Solution Stack named … found


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