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I understand that since Lion Server there is no longer failover IP present. Just as I wanted to use it... I have a 10.6 Server disk somewhere, but I'd rather not look back, so I'm looking for a work around to the OS X Server downsizing...
At least I would like to have Mail and Web failover...
Mac mini, Mac OS X (10.7.3)
Hi nei0angei0,
I know it's a really old thread but I think a reply is the only chance to probably get in touch with you. As we in our company are facing exactly the same problem of setting up a Mac server infrastructure with failover functionality I'm highly interested in details about your solution. And if there's a chance to get it running somehow on Sierra.
So if you get a notification about this post I'd be very happy if you'd reply.
Thanks in advance and best regards!
The web failover could be done through DNS (DNS Made Easy works at low costs). A file on your server with the string "UP" in it can be dedicated for this purpose, but a simple 200 (OK) result is also an option.
After a file for whatever reason becomes unavailable, the DNS no longer gives out the first IP address to your server, but switches to a second or third (IPv4 only for now), etc.
The mail failover can also be done with DNS Made Easy as they provide (2) backup Mail services to make sure e-mail gets delivered without any hiccups and gets delivered to your server when it comes back online (make sure your email server has all accounts set up before accepting connections).
For other services there must also be a creative solution using two servers and failover DNS or SRV-records (https://www.ietf.org/rfc/rfc2782.txt).
Thank you very much for that interesting info. Not quite shure if a provider-change is an option for us but we'll consider this or a similar solution. And sure we're gonna have a closer look at the RFC you named.
Otherwise, if we ever get a solution running based on heartbeat- and failover-scripts i'll report it here.
Fail over replacement software-My only option was to create a process made up of 3 scripts that fully simulate what heartbeatd and failoverd provided on the previous systems. They check for constant availability and monitor services. When issues are detected they try and repair the issue, then fail over if not successful. Right I am using this with Two servers that do not share the same file pool. They nightly sync so if a fail over occurs, the data is from the night before until we can bring the main server up and sync it.
Hi nie0angei0,
While mourning the loss of of High Availability built-in, I have the need to do exactly what you've achieved. Would it be too much to ask you to share your scripts with me (obviously munge the sensitive stuff)
Best regards - Anton
Hello,
A sad day indeed, but the need is diminishing as well. I can wrap up the scripts but in reality they are quite custom even excuding the sensetive stuff. Do you have any Applescript experience? Also what services are you looking to fail over? Please let me know and I will do what I can to help you.
I sincerely appreciate your offer.
As for Applescript experience.. some, but I wouldn't call it my major. However, I'm totally comfortable with the idea of 'rolling my sleeves up & getting stuck in'.. Fortunately (for me) Applescript is easy to read/understand, being mostly plain English.
At this time we are only talking web services and MySQL, but I have a sneaky suspicion that we are likely to see significant feature creep.. so, ideally, I'd love to be able to clone the entire machine, soup to nuts.
Hello,
i want the high availability of two minis for file sharing.
Can you send me the scripts?
Thanks!
Failover in Lion?
