Bob, simple diagram for what you are looking for:
http://www.1stserv.com/images/Load-balancer-Setup1.png And here is a more detailed document: https://f5.com/resources/white-papers/load-balancing-101-nuts-and-bolts If you're using MS Windows Server to host your Apache Servers you can look into using Microsoft NLB. It's a low cost solution that works fine and does not require any extra HW: https://technet.microsoft.com/en-us/library/cc725691.aspx About your questions: >What can be done to assure the high-availability of the reverse proxy itself ? User redundant LBs or MS NLB. >What about the latency if the master and hot standby located in two different data center I don't have that scenario so can't help you much with this question. If you are looking into geographically distribute your application I would suggest the DNS route: https://www.digitalocean.com/community/tutorials/how-to-configure-dns-round-robin-load-balancing-for-high-availability Cheers, John On Mon, Feb 15, 2016 at 9:33 AM, Bob <bobnli...@gmail.com> wrote: > Hello John, > > Could you please give me some more clue / pointers/ link ? > > Please allow me repeating my questions again > > What can be done to assure the high-availability of the reverse proxy > itself ? > What about the latency if the master and hot standby located in two > different data center ? > > > > > On Monday 15 February 2016 09:02 AM, Meta Correio wrote: > > We have it implemented using and external, redundant , load balancer. > It really comes down to your budget. > > John > > On Mon, Feb 15, 2016 at 8:58 AM, Bob <bobnli...@gmail.com> wrote: > >> Hello, >> >> Thanks for the valuable suggestions. >> >> What can be done to assure the high-availability of the reverse proxy >> itself ? >> What about the latency if the master and hot standby located in two >> different data center ? >> >> >> >> On Sunday 14 February 2016 10:43 PM, Yehuda Katz wrote: >> >> We use three different methods: >> 1. Content on NFS server >> 2. Content auto-committing and auto-pulling over git about every 15 >> minutes >> 3. Separate database server - with replication for backup. >> >> - Y >> >> Sent from a device with a very small keyboard and hyperactive autocorrect. >> On Feb 14, 2016 5:28 PM, "Rose, John B" <jbr...@utk.edu> wrote: >> >>> What is your preferred approach to keeping content in sync? >>> >>> Sent from my iPad >>> >>> On Feb 14, 2016, at 3:47 PM, Daniel < <dferra...@gmail.com> >>> dferra...@gmail.com> wrote: >>> >>> with a reverse proxy in front of both, you use balancer setup specifying >>> the second web server as hot standby >>> >>> El dom., 14 feb. 2016 a las 16:49, Bob (< <bobnli...@gmail.com> >>> bobnli...@gmail.com>) escribió: >>> >>>> Hello list, >>>> >>>> I have two servers. One is already up with apache, mysql etc.. >>>> Now I wonder if I can configure the second server as a fallback web >>>> server. >>>> The idea is.. if first web server is down , the second one will serve >>>> the requests. >>>> >>>> Any suggestion / idea is very much welcome. >>>> >>>> Thanks and regards, >>>> Bob >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: <users-unsubscr...@httpd.apache.org> >>>> users-unsubscr...@httpd.apache.org >>>> For additional commands, e-mail: <users-h...@httpd.apache.org> >>>> <users-h...@httpd.apache.org>users-h...@httpd.apache.org >>>> >>>> >> > >
