Category Archives: Open Source Misc

Raft Consensus Algorithm

This article will help you give a brief history of Raft, what is consensus, what is the RAFT protocol, what are the advantages, how is it better than its alternatives, what are some limitations of the RAFT protocol. Introduction Raft protocol was developed by Diego Ongaro and John Ousterhout (Stanford University) which won Diego his Ph.D. in 2014(The link for

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[SOLVED] throw errnoException(err, ‘spawn’); Error: spawn ENOMEM

warn:    –minUptime not set. Defaulting to: 1000ms warn:    –spinSleepTime not set. Your script will exit if it does not stay up for at least 1000ms info:    Forever processing file: ./bin/www internal/child_process.js:323 throw errnoException(err, ‘spawn’); ^ Error: spawn ENOMEM at _errnoException (util.js:992:11) at ChildProcess.spawn (internal/child_process.js:323:11) at exports.spawn (child_process.js:502:9) at Object.forever.startDaemon (/usr/lib/node_modules/forever/lib/forever.js:464:13) at /usr/lib/node_modules/forever/lib/forever/cli.js:319:15 at /usr/lib/node_modules/forever/lib/forever/cli.js:162:5 at /usr/lib/node_modules/forever/lib/forever.js:409:24 at

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Kibana Troubleshooting [Kibana server is not ready yet]

Hi Bloggers, I am sure if you are doing a proof of concept. on ELK Stack  and if you have installed Elasticsearch and Kibana already and when you try to open your Kibana URL:- “Http://<URL>:5601” and apparently end up the page showing “Kibana server is not ready yet” In such a case, there are multiple possibilities for this error. Considering

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ELK on CEntOS 7 – (Source UnixMen)

Introduction For those who don’t know, Elastic Stack (ELK Stack) is an infrastructure software program made up of multiple components developed by Elastic. The components include: Beats: open-source data shippers working as agents on the servers to send different types of operational data to Elasticsearch. Elasticsearch: a highly scalable open source full-text search and analytics engine. It allows you to store, search, and analyze

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