The difference among alpha,beta and stable in kubernetes [closed] - kubernetes

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Can you explain the different features among alpha, beta and stable in kubernetes?
And I also want to know what the General Availability ( a.k.a GA ).
Thank a lot!!

Alpha means the feature is disabled by default and may change wildly before it exits alpha. Beta means on by default, stable for most use, but still might change before GA. GA means the feature will not change in backwards incompatible ways and has the full trust of the project behind it.

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Switch from RabbitMQ to Kafka [closed]

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How easy is to switch from Rabbit to Kafka in existing solution, to replace one implementation (Rabbit) with other (Kafka)? We are about to use Rabbit in our implementation but we want to see if it is possible in the future to replace it with Kafka.
It is possible, and I've seen people do it - but it is a big project.
Not only the APIs are different, but the semantics are different. So you need to rethink your data model, scaling model, error handling, etc. And then there's testing.
If you don't have tons of code to update, and the code is localized and you have both RabbitMQ and Kafka experts on the team you may be able to get it done in a month or two.

Is RKE (from Rancher) production ready? [closed]

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All is in the title: Is RKE (from Rancher) production ready?
I tried to google it without success.
And is there any best practices to set up a production cluster with it?
Thanks for your help.
This question is rather hard to answer without knowing your acceptance criteria. What is production readiness from your point of view?
High availability? Can be achived
(Enterprise) Customer Support? Can be requested
Are you concerned about the conformance of the k8s deployment through rke? Check https://www.cncf.io/certification/software-conformance/ - Rancher is listed there.
Maybe give https://github.com/heptio/sonobuoy a try.
Cheers

What are the available open source acceptors for quickfix? [closed]

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What are the available open source quickfix acceptors/servers/simulators which have MATCHING and EXECUTION option. If you any tool please give the link.
I found few tools like fiximulator,quickfix-messenger and ect. But these tools don't have order matching option.
Thanks in advance.
QuickfixJ comes with an example called OrderMatcher. It is a simple order matching engine that accepts orders and generated ER when matches occurs.

EBNF presentation examples? [closed]

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Anyone know of good examples for the presentation of Extended Backus-Naur Form for electronic media (i.e. HTML)?
I am looking for suggestions about form, not content -- I'm looking to make it as readable as possible, so that rules, terminals, and EBNF symbols are easily distinguished from each other.
Not sure if this is what you mean (or whether it's way too late), but I've been playing with this visualisation tool:
http://www-cgi.uni-regensburg.de/~brf09510/syntax.html
At the moment it appears to only support png output, and it's not that pretty. Otherwise I have had recommended to me (untried, YMMV) Graphviz.

i want to host a wiki site for an internal company project [closed]

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I don't have much experience with this. are there any free or low-cost solutions I can deploy? We have a relatively low-powered server running windows NT (ouch, i know).
Preferably something that allows multi-user access though something light-weight is the main consideration.
I used http://www.wikimatrix.org/ to compare features and prices of over 100 wiki engines last year for my company. Try it out.