Automated Deployment Pipeline 3 of 3

Background We have previously covered a pipeline example with Jenkins calling Ansible to leverage OpenSSH configuration and Ansible inventory. We also discussed a use case with declarative pipeline. In this posting, I will provide another advanced example, built on declarative pipeline. The pipeline file will be pulled from Git repository. Also, the script is executed … Read moreAutomated Deployment Pipeline 3 of 3

Automated Deployment Pipeline 2 of 3

In this posting, we continue to discuss Jenkins’ ability to automate deployment routines. Jenkins supports freestyle project out of the box, as well as Pipeline with several plugins. Freestyle project allows user to specify multiple steps on UI. This does not scale well when your entire process involves many steps. As explained on Jenkins’ website: … Read moreAutomated Deployment Pipeline 2 of 3

Automated Deployment Pipeline 1 of 3

The business case You launched a software application. You installed it on two customer sites. You support the application mostly by SSH to customer server and run Bash commands, or slightly better, Bash scripts. The product is a hit to the market. You hired 20 support specialists in a customer service department. The dream client … Read moreAutomated Deployment Pipeline 1 of 3

Zookeeper Summary

Distributed systems Distributed system involves independent computing entities linked together by network. The components communicate and coordinate with each other to achieve a common goal. In early days, designers and developers often had made some assumptions (aka. fallacies) of distributed computing: The network is reliable Latency is zero Bandwidth is infinite Network is secure Topology … Read moreZookeeper Summary

Virtualization 3 of 4 – Containers

In broad terms, virtualization of computing resource is about isolation of resources at different levels. We have covered hypervisor-based virtualization in the other post. In this article, we continue to dive into OS level virtualization. Remember again that the gist of virtualization is isolation of resource. To support OS level virtualization, the OS must have … Read moreVirtualization 3 of 4 – Containers