I face an error Ubuntu jammy is not supported while installing hyperledger composer prerequisite - hyperledger-fabric

Currently I am using Ubuntu 22.04 LTS version on Oracle virtual machine. When I try to install all the prerequisite of hyperledger composer it's showing an error Ubuntu jammy is not supported.
I am unable to run ./prereqs.sh command. Please help me

Unfortunately Hyperledger Composer has been unmaintained since August 2019 so I'm not surprised that you have hit problems with prereqs.
I would strongly recommend using Hyperledger Fabric directly, which is what Composer was based on. Although it is still not as straightforward as Composer, there have been quite a few improvements to Fabric over the last few years which should hopefully make getting started a bit easier. For example, have a look at the full-stack-asset-transfer-guide repository, which was used in a workshop at the Hyperledger Global Forum last week.

Related

Which Hyperledger Fabric version is recommended 1.4 or 2.x

I would like to know what is the recommended version of Hyperledger Fabric (1.4 or 2.x) or if it is 100% recommended to implement the most recent version, in this case 2.x.
This is because for obvious reasons 1.4 has more downloads and implementations for having more time published.
Greetings and thanks
Hyperledger fabric 1.4 community support will finish in April 2021 (Service providers may provide support for longer). The recommendation is that you should start with Hyperledger fabric 2.2 which is the current LTS version or 2.3 if you want to try some of the newer capabilities

Is it recommended to use the older version of hyperledger fabric?

I wanna build a blockchain on hyperledger fabric. So I found some good repos in version 1 but not in hyperledger fabric version 2.
Would you recommend to use the old version instead of the latest version (2.0)?
Thanks for any recommendation/suggestion.
Hyperledger Fabric 2.2 LTS was released July 2020, this means that Hyperledger Fabric 1.4 LTS will go out of support in April 2021 (ie do not expect any updates or releases to the 1.4 version such as bug/security fixes).
Any new project should start with the latest LTS version which is currently 2.2

Is Hyperledger Explorer compatible with Hyperledger Fabric v2.0.0?

I've build a Hyperledger Fabric network (v2.0.0) and I want to know if Hyperledger Explorer tool is compatible with this version of network.
Can anyone help me?
As of now regarding Hyperledger, Hyperledger Explorer can support up to Hyperledger Fabric 1.4.8
Ref:- https://github.com/hyperledger/blockchain-explorer#10-release-notes----
You are in luck. As of July 1st 2020 they support v2.0 and above.
Just download the latest docker image build of version: v1.1.1 (Jul 17, 2020) and you are good to go.

How to install Google Sandbox2 on linux

Can someone guide me through a set procedure on installing and using google sandbox2 API on Ubuntu 16.04 .
The documentation on google developers is not helping me.
One of the developers of Sandboxed API here. Can you be a bit more specific on what you tried and what you would like to know?
As for your setup, we recommend you use a newer version of Ubuntu, such as 19.04 or a recent Debian.
Finally, if you want to add sandboxing to an existing open source project, you may be eligible for the Patch Rewards Program, if upstream accepts your changes (Google "Patch Rewards Program").

install multiple versions of gitlab in single server

Is it possible to install multiple GitLab versions in single server? I already have GitLab 5.0.1 installed and running and planning to install 6.8 on the same server, will there be any issue?
You are lucky :)
We have a GitLab recipe for that.
It can be an issue since the gitlab requirements can change and evolve from 5.0.1 and 6.8.
6.8 seems to support Ruby 1.9.3 still (like 5.+ did), so it might work.
But the easiest way to install multiple instances would be to isolate them in a Docker container, which is available on a (recent 3.10+) Linux, but also possible on a Mac or Windows, with a Vagrant 1.6+.
(See "Vagrant: Docker-Based Development Environments")
Without that isolation, you need to ensure no resources are shared, which is what that document describes, as mentioned in axil's answer.

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