Peacemaker and corosync?
On Thu, Oct 1, 2020 at 10:16 AM Jeroen Massar via subsurface < subsurface@subsurface-divelog.org> wrote: > On 20201001, at 07:00, Dirk Hohndel via subsurface < > subsurface@subsurface-divelog.org> wrote: > > > >> On Sep 30, 2020, at 8:36 PM, Chirana Gheorghita Eugeniu Theodor < > off...@adaptcom.ro> wrote: > >> > >> What would be needed to have a secondary server in a new location? what > setup are we talking about? > > > > It’s actually rather difficult to load-balance this without adding a ton > (and I mean a TON) of infrastructure that I’m not really interested in > maintaining. I have spent a bit of time trying to figure out if there’s a > way to cheat and not need a storage engine, but if there is, I haven’t > found any pointers on how to do this. > > Do you have a mini description of the server side setup (code/fs/db)? Is > it Git based? > > > I do have a way to do a hot standby, I may have deleted that hot standby > from AWS because I was ticked off about the money they charged me for it - > when it never once got used. And this still had the problem with figuring > out how to implement the traffic distribution without incurring even more > AWS fees. > > Active/standy should be fine for this purpose. > > Just rsync/git-pull the stuff over, so that if the primary dies, that you > can switch over manually. > > Split-brain is the biggest issue in these kind of setups. > > > The fun detail is that basement servers are typically the most stable > (except for the connectivity possibly), and if something breaks one can > actually walk to that "datacenter" easily, often much quicker to fix too if > one needs spare parts etc. And with cheap-ish power, and free cooling / > colder environment (we got first snow at 1200m) it is price-wise cheaper > than a colo'd box. > > That said though, I use private colo'd servers (because of home > connectivity not always being superb and could not get more than slow cable > speeds and upload at home still is slow), if you need a secondary/third VM > somewhere on a static IP (colo'd), don't hesitate to yell, more than happy > to donate one for Subsurface (and I am sure others here can do the same; it > is always funny the names you see on this list ;) ). > > Also, the expertise + time for doing a full active-active version if one > wants to go in that direction, I have setup my share of those systems. > > But as you say,.... if it is 99.8% running, meh, is not life critical. > Long live git. > > >> On Thu, Oct 1, 2020, 01:31 Rick Walsh via subsurface < > subsurface@subsurface-divelog.org> wrote: > >> To conserve money, much of the infrastructure is actually running in my > basement. > >> All of course on a UPS, with redundant internet connection, etc. > >> > >> Power went out today. And my UPS failed. > >> I've always wondered what that U in UPS actually stands for. > > > > Oh, speaking of saving money… yeah, I bought a new UPS. Oh, and one of > my little NUCs needed a bigger NVMe M.2 SSD. > > So maybe I really don’t understand how to save money :-) > > Sounds like a still cheap rabbit hole to me ;) > > Greets, > Jeroen > (who is awaiting travel to become easier again so I can pack some bags > and go see some big fish...) > > _______________________________________________ > subsurface mailing list > subsurface@subsurface-divelog.org > http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface > -- ________________________________________ Cu stima/Best regards/Mit freundlichen Grüßen, Chirana-Gheorghita Eugeniu-Theodor Bucharest, Romania e-mail : off...@adaptcom.ro mobile: 0743 698721 0747 447675 SSI diver ID: 1118289
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