Tag: sysadmin

  • 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…

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  • 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…

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  • 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…

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  • Log file navigator (lnav)

    I’ve used a number of log viewers in command terminal, on MacOS and Linux server. I read system logs, log4j formats, as well as json…

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  • 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.…

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  • 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…

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