Are you going to expand the amount of hosts? If not, stick with such default failover setup.
If you want to go the mesos/containerized way (and get more servers to prevent split brain issues). I would do it differently. First of all you do not need a backup machine and one of them active. With mesos you just use all hosts and if one fails, the tasks of the failed node will migrate to the active nodes. Eg. if you want to host websites you could hosts multiple apache tasks having each their own external storage (better to spread iops). I am using ceph for this. Lets say you have 300 websites. You can create 3 external block devices in ceph, create 3 apache tasks each serving a 100 websites. Mesos/marathon will deploy these apache processes in your available nodes. If one node fails, then probably one apache tasks is moved to the other nodes. PS. I am still researching mesos also ;) -----Original Message----- From: Gokula Krishnan [mailto:[email protected]] Sent: woensdag 10 juli 2019 11:17 To: [email protected] Subject: Re: How to Use 2 physical machine resource at the same time Hi All, can you please help me with solution that would fit my requirement. With warm regards, Gokula On Tue, Jul 9, 2019 at 9:23 PM Vinod Kone <[email protected]> wrote: Yes, If I understand your use case correctly. You can also reach out to us in slack <http://mesos.apache.org/community/> if you want a more synchronous conversation about this. On Tue, Jul 9, 2019 at 10:19 AM Gokula Krishnan <[email protected]> wrote: Dear All, Thank you so much for your response. I am not using Mesos but I am exploring if Mesos can be used for my requirement. Current Setup/Environment 2 physical machines each has RAM16gb, 1CPU(4core), Linux OS Both physical machine has same services running · apache httpd · 10+ web servers instances · (rdbms) database · rabbitmQ service At any point of time, only one physical machine is active (serves the request) and the other physical machine is in standby mode. All the requests are served but the active physical machine while the standby physical machine is unused. When the active physical machine goes down (fails), the standby machine become active and it servers the request. so at any point in time, only one physical machine is utilized. Using Mesos, is there a way to use both the physical machine resource at the same time. Thank you in advance, On Tue, Jul 9, 2019 at 1:29 AM Hans van den Bogert <[email protected]> wrote: I think gokula isn't using mesos at all atm and is researching if there are better options than his current failover environment. Under the above assumption: To answer gokula, yes mesos would allow you to use resources of multiple machines, however I think the overhead of running multiple mesos masters (for failover like you have now) isn't worth it for two machines, though that ultimately depends on the 'beefyness' of the hardware in question. It also depends on how you expect a mesos cluster to behave in comparison to your current cluster. Can you elaborate on your current setup/environment? Hans -- Thanks and Regards, Gokula -- Thanks and Regards, Gokula
