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The Lounge What is on Your Mind? Cut Over to New Data Center and Upgraded OS Done. :) Post 303022861 by bakunin on Saturday 8th of September 2018 04:42:57 PM
Old 09-08-2018
Great job, Neo! Kudos for the smoothness of the transition.

Quote:
Originally Posted by Aia
Does it still make sense for you to be tied down to a private data center instead public cloud? I am curious.
Funny, i had just this discussion with a customer of mine: usually i work for banks and other large corporations with datacenters of several hundreds or thousands of (virtualised) servers. This time my customer is a relatively small company with about 50 servers (not virtualised by now) and the job is to transfer the whole datacenter to a new location (another town actually) and introduce virtualisation on the way.

Their first ideas when we had the kick-off work shop were the typical buzzword-bingo: cloud ... blabla ... software storage ... blabla ... Nutanics ... platform as a service ..., etc.

Then i asked a few questions: turns out, they have no idea what a "cloud" is and in fact what they really need is a reliable DevOps system. Their most prominent use case is: they need a test (development, ...) environment for one of their production servers and they want to more or less automatically deploy it. This is exactly what a DevOps system can help you with. My suggestion was to introduce Ansible but also reorganise their environment so that industrialisation and standardisation takes place. No more "hand-crafted one-of-a-kind" server systems but standardised machines with a standardised setup that is easily replicateable.

Next question: their most valuable asset is a large corporate database with a CRM system on top. Do you want to have that somewhere in the internet?
A: "Ah, but we can put a clause regarding this in the contract!"
Q: "Yes - and when this is breached (as has happened to some in the past) you get some refund but the trust of your customers to give you any data is NIL, never to return again and your business model is therefore dead. How much refund do you need to cover for that?"

Cloud services are nice when you need systems for testing for a limited amount of time and you don't want to hold the hardware resources for this. If you need a system to test your new database with meaningless test data then Amazon cloud, Microsoft Azure or whatever else you prefer is for you. If you need a reliable productive system you better have control over every clock cycle the underlying machine offers.

bakunin

Last edited by bakunin; 09-08-2018 at 05:49 PM..
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Catalyst::Manual::Deployment(3pm)			User Contributed Perl Documentation			 Catalyst::Manual::Deployment(3pm)

NAME
Catalyst::Manual::Deployment - Deploying Catalyst DEPLOYMENT OPTIONS
Catalyst applications are most often deployed as a FastCGI or mod_perl application (with FastCGI being the recommended option). However, as Catalyst is based on the PSGI specification, any web handler implementing that specification can be used to run Catalyst applications. This documentation most thoroughly covers the normal and traditional deployment options, but will mention alternate methods of deployment, and we welcome additional documentation from people deploying Catalyst in non-standard environments. Deployment in a shared hosting environment Almost all shared hosting environments involve deploying Catalyst as a FastCGI application on Apache. You will usually want to have a set of libraries specific to your application installed on your shared host. Full details of deploying Catalyst in a shared hosting environment are at Catalyst::Manual::Deployment::SharedHosting. FastCGI FastCGI is the most common Catalyst deployment option. It is documented generally in Catalyst::Manual::Deployment::FastCGI, and there are specific instructions for using FastCGI with common web servers below: Apache Catalyst::Manual::Deployment::Apache::FastCGI nginx Catalyst::Manual::Deployment::nginx::FastCGI lighttpd Catalyst::Manual::Deployment::lighttpd::FastCGI Microsoft IIS Catalyst::Manual::Deployment::IIS::FastCGI mod_perl Traditionally a common deployment option for dedicated applications, mod_perl has some advantages and disadvantages over FastCGI. Use of mod_perl is documented in Catalyst::Manual::Deployment::Apache::mod_perl. Development Server It is possible to deploy the Catalyst development server behind a reverse proxy. This may work well for small-scale applications which are in an early development phase, but which you want to be able to show to people. See Catalyst::Manual::Deployment::DevelopmentServer. PSGI Catalyst can be deployed with any PSGI-compliant handler. See Catalyst::PSGI for more information; a list of possible deployment servers are shown below: Starman Starman is a high-performance Perl server implementation, which is designed to be used directly (rather than behind a reverse proxy). It includes HTTP/1.1 support, chunked requests and responses, keep-alive, and pipeline requests. Starlet Starlet is a standalone HTTP/1.0 server with keepaXXalive support which is suitable for running HTTP application servers behind a reverse proxy. Twiggy Twiggy is a high-performance asynchronous web server. It can be used in conjunction with Catalyst, but there are a number of caveats which mean that it is not suitable for most deployments. Chef <LChef|http://www.opscode.com/chef/> is an open-source systems integration framework built specifically for automating cloud computing deployments. A Cookbooks demonstrating how to deploy a Catalyst application using Chef is available at <http://community.opscode.com/cookbooks/catalyst> and http://github.com/melezhik/cookbooks/wiki/Catalyst-cookbook-intro <http://github.com/melezhik/cookbooks/wiki/Catalyst-cookbook-intro>. AUTHORS
Catalyst Contributors, see Catalyst.pm COPYRIGHT
This library is free software. You can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2012-01-20 Catalyst::Manual::Deployment(3pm)
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