Category Archives: Open Source Misc

SSH Tunnel AWS Elasticsearch Service from local machine

No more signing every request Remember this? Every request had to be signed with AWS’s SigV4 so that the Elasticsearch endpoint could be properly authorized. That meant additional code to sign all your requests, and additional time for the endpoint to decode it. It might only be a few milliseconds of extra processing time, but those can add up. Now

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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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