Let's say I have a fully working, load-balanced application server environment.
All servers have to fail-over gracefully. It's relatively easy to do with the application servers, but how can I achieve fail-over with the front load-balancer?
Can I have multiple load-balancers listening on the same IP and port? Do I have to run a new one as soon as I detect the old one died?
We have a number of Database severs running MongoDB on Debian plus a number of Application servers also on Debian. The db servers hold replicating db clusters, so they need to talk to each other. Application servers need to talk to all db servers (for reasons of fault tolerance).
The servers are potentially spread across multiple hosting centers, so we need secure channels between all servers.
I'v a couple of firewalls running Keepalived 1.1.15 (Debian Lenny), at the origin for the VRRP feature.
Then I added an LVS cluster with two 2 SMTP servers and lb_kind = NAT so our customers have transparent fallback and load-balancing.
The issue with this setup was that all other servers behind the firewall are unable to reach the SMTP LVS ip address (because of the lb_kind NAT).
I am a student in IT and I have been asked to build a web server cluster for multiple websites. After 2 weeks of searching, reading and testing, I came here to ask for help.
What we want is a cluster of web servers working together in load balancing and fail over.
I am using ldirectord for loadbalancing two HTTP servers. On the load balancer box i have the following network configuration:
eth0 is used for internal purposes and does not take part in load balancing at all. On eth1
I have configured the public IP for the machine (for accessses from other internal networks) and the VIP of the load balancer.
Greetings,
I'm looking for some pointers, and I'm not sure where to go for advice.
I have a server farm consisting of 9 servers, separated into two zones (DMZ/LAN).
I was looking at Vsphere to automatically load balance my apache web servers, and mysql servers but will this actually do the job?
I know it says it does auto load balancing but not actually sure it quite means what I want to achieve.
Is there an easier way to set up a php-apache and mysql cluster within virtual machines?
Or are there any guides to clustering?
I'm trying to figure out how to load balance an application, such as WordPress.
I try to set up a (pretty) high availability solution for a service that I run on Linux machines and here's what I come up with:
- one front end server used for balancing.