Requirements

• NodeJS LTS (14+) https://nodejs.org/en/download/package-manager
• Yarn 1 https://classic.yarnpkg.com/en/docs/install

Usage

• Install NodeJS and Yarn
• git clone https://github.com/Phala-Network/khala-ops-healthcheck.git
• cd khala-ops-healthcheck
• yarn
• node healthcheck.js -h 127.0.0.1 -p 9933

Return sample

node healthcheck.js -h 127.0.0.1 -p 9933
2021-09-16 17:05:30        API/INIT: Api will be available in a limited mode since the provider does not support subscriptions
2021-09-16 17:05:31        METADATA: Unknown types found, no types for SpecVersion
{"onChainTimestamp":1631810976042,"localTimestamp":1631810994331,"gapInMinutes":0.3048166666666667,"headBlockNumber":11755}

How to monitor

You should take care of gapInMinutes ((localTimestamp - onChainTimestamp) / 1000 / 60), it should < 2