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redundancy setup
Hello, I am interested in setting up my site using multiple VPS for redundancy, but at this moment, I have doubts and would like to verify if what I have at hand is correct, so would just like to clarify things before proceeding.
From what I have gathered so far, using Rage4 DNS service is the first part of this setup: when VPS1 goes down, it failsover to VPS2 and vice versa. There are other services, but I have seen glowing comments about this service, thus will just use this.
After which, I have to sync my files from VPS1 to VPS2 on a regularly basis. What I have now is just a simple website, so what's to me is just have uptime. But I am wondering, what is the best way for database replication? For files, I will be using Rsync, but for database replication, I am only familiar with mysqldump, but the process is abit tedious. Thus I am wondering if there are any better ways to do this database replication.
At the moment, I do not need to replicate it as often, but just wondering for future possible applications, this may be necessary.
Is this all I have to consider to setup redundancy for my website? Or are there other things that I have missed out that may be a best practice kind of thing? And finally, assuming I have 2xVPS, VPS1 and VPS2, can I just get a 3rd VPS (VPS3) and replicate both VPS1 and VPS2 to VPS3?
Sorry for the long post, but I am just curious and I understand that Murphy always has his way around here. Thanks for your assistance!
Comments
Ask @KuJoe.
He has slaves on the Moon and sends backups to Mars.
I always wondered, how fast does the Rage4 DNS switch? Doesn't it take a while to switch?
My guess is that it would take at most TTL secs for clients to get the updated record value
@wcgodz - thanks for using Rage4 DNS
@taronyu, @MiguelQ - yes, it depends from TTL
Assuming your nameserver honors TTLs less than some arbitrary value. Many don't - they round up TTLs to 3600.