Monthly Archives: October 2019

Cryptogen 1.4.3 Bugs

Posted on October 23, 2019 by Siddharth Jain

As is common for Fabric, the cryptogen utility (1.4.3) has various bugs as of this writing: The most important bug is that the admincerts folder is empty. see https://jira.hyperledger.org/browse/FAB-16933 The next bug (FAB-16936) is that if you are enabling Node … Continue reading →

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Understanding Node OUs in Fabric

Posted on October 23, 2019 by Siddharth Jain

ever seen this in configtx.yaml and wondered what it means? Let me try to explain. Taking this example in configtx.yaml: Policies:   Readers:   Type: Signature   Rule: “OR(‘Org1MSP.admin’, ‘Org1MSP.peer’, ‘Org1MSP.client’)“   Writers:   Type: Signature   Rule: “OR(‘Org1MSP.admin’, ‘Org1MSP.client’)“ … Continue reading →

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Hyperledger Fabric Commercial Paper Sample

Posted on October 22, 2019 by Siddharth Jain

V1.4 of Fabric introduces the commercial-paper sample which is supposed to be the flagship sample showing Fabric development. I had a chance to study it today and I must say it is so ridiculous that I didn’t know whether to … Continue reading →

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Installing MySQL on brand new Ubuntu VM

Posted on October 18, 2019 by Siddharth Jain

https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-18-04 siddjain@engblog:~$ sudo apt update Hit:1 http://azure.archive.ubuntu.com/ubuntu bionic InRelease Get:2 http://azure.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Get:3 http://azure.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB] Get:4 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB] Get:5 http://azure.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [753 kB] Get:6 http://azure.archive.ubuntu.com/ubuntu bionic-updates/main Translation-en [271 kB] … Continue reading →

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