Re: Postgresql + containerization possible use case

Check out rolling updates with kubernetis and yes, a containerized
postgresql environment is likely the best option. The really nice bit about
containers is that you don't actually care about underlying hardware. You
need a docker daemon. K8 manages clusters and it sounds like your use case
would benefit from that.

On Mon, Dec 13, 2021, 11:03 AM Achilleas Mantzios <
achill(at)matrix(dot)gatewaynet(dot)com> wrote:

> Hi Berto,
>
> On 13/12/21 3:03 μ.μ., Bèrto ëd Sèra wrote:
>
>
> On Mon, 13 Dec 2021 at 12:41, Achilleas Mantzios <
> achill(at)matrix(dot)gatewaynet(dot)com> wrote:
>
>> Hmm, I don't know about that. The hardware is given (existing) and
>> limited.
>> You are like the 2nd person who warned about comms as being an issue with
>> docker/containers.
>>
>
> Quick question: do those ships ever touch port? If so, it's not a fact
> that you have to rely on sat com to do updates. Just keep an on-shore table
> of updates and do the updates every time a ship is in a port and can use a
> normal port wifi com. IMHO this would be the safest option EVEN if satcom
> was free of cost, as it will never be half as stable as a land based com
> line.
>
> Yes they do touch port, otherwise they would be of little commercial value!
> I am confused here : Are we talking about traffic due to :
> a) normal business traffic (designed by me/us old system based on DBMirror)
> b) system updates due to some decision of the system itself and/or our team
> c) normal app shipping via new images, or new .ear/.war or whatever
> ?
>
> And since you are not deploying the same thing everywhere (you quote
> different HW everywhere, so hardly one image could be optimised for
> everything), you are going to need to test upgrades for each ship, which is
> both dangerous and expensive, if done on sat com.
>
>
> We are deploying the same exact app everywhere (jboss), but of course
> exim4, etc other services will be specific for every ship.
>
>
> My 5p
> Berto
>
>
>
> --
> Achilleas Mantzios
> DBA, Analyst, IT Lead
> IT DEPT
> Dynacom Tankers Mgmt
>
>