Monthly Archives: October 2019

Cryptogen 1.4.3 Bugs

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

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

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

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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