Load-balancer options

Posted by toolkit on Server Fault See other posts from Server Fault or by toolkit
Published on 2009-05-22T14:36:26Z Indexed on 2010/03/23 12:53 UTC
Read the original article Hit count: 567

Filed under:

load-balancer

|

dns

|

apache

|

tomcat

|

terracotta

I am looking at a number of possible options for load-balancing.

So far, I am constrained to the following options:

DNS server load-balancer, balancing to a cluster of tomcat servers, with terracotta for session replication. Pros - don't have to buy new kit. Cons - DNS lb can keep directing to a broken server.
Hardware load-balancer, direct to cluster of tomcat servers. Pros - could have second box for failover lb. Cons - expense.
Apache server load-balancer. Pros - apache's lb polls for broken servers. Cons - apache server is single point of failure, plus need to buy another server.

Are there any other options I should consider?

Thanks.

Update: Thanks for all the answers so far +1's all round. Not accepting an answer yet, to keep more ideas coming.

© Server Fault or respective owner

Related posts about load-balancer

Load-balancer options

as seen on Server Fault - Search for 'Server Fault'
I am looking at a number of possible options for load-balancing. So far, I am constrained to the following options: DNS server load-balancer, balancing to a cluster of tomcat servers, with terracotta for session replication. Pros - don't have to buy new kit. Cons - DNS lb can keep directing to… >>> More
Balancing internal services using a Cisco CSS 11501

as seen on Server Fault - Search for 'Server Fault'
First, the background to the problem: I have a Cisco CSS11501 that I am using to load balance a few web servers. These web servers have two network interfaces, one internal and one external and we are sending the requests to the internal interface. We have the CSS configured to do NAT because our… >>> More
Apache load balancer limits with Tomcat over AJP

as seen on Server Fault - Search for 'Server Fault'
Hi All, I have Apache acting as a load balancer in front of 3 Tomcat servers. Occasionally, Apache returns 503 responses, which I would like to remove completely. All 4 servers are not under significant load in terms of CPU, memory, or disk, so I am a little unsure what is reaching it's limits or… >>> More
PEN daemon as load balancer, IIS web logs not showing true requester IPs

as seen on Server Fault - Search for 'Server Fault'
I have a Hercules vmware appliance, which is a micro-linux vm that runs the PEN daemon and acts as a server load-balancer. It takes any incoming request on the appliance's IP and routes it out to a number of alternate IPs. The logs of the daemon show the true IP of the browsers hitting the website… >>> More
Reset Network Load Balancer Connection Pool

as seen on Server Fault - Search for 'Server Fault'
I am currently working on load testing a web application on a virtual machine cluster. I am looking for a way to flush the connection pool / NLB cache so that it is like each machine connecting to the NLB is connecting for the first time and doesn't get directed back to the node that it was on last… >>> More

Related posts about dns

Master/Slave DNS setup vs. rsync'ed DNS servers

as seen on Server Fault - Search for 'Server Fault'
We currently have primary and secondary DNS servers on our corporate network. They are setup in a master/slave type setup, where the slave gets its DNS information from the master. I'm trying to figure out what the real advantage is for the master/slave setup instead of just setting up an automated… >>> More
Updating Windows DNS records from a remote windows DNS server

as seen on Server Fault - Search for 'Server Fault'
Does anyone know if it is possible for a windows 2003 DNS server to update the records for a domain so that it contains all the records of a domain of of a remotely based DNS server? Im almost certain that doesn't quite explain the problem so I shall illustrate with an example: We have two offices… >>> More
OpenVPN DNS: VPN DNS stomping local VPN

as seen on Super User - Search for 'Super User'
I've finally noodled with OpenVPN enough to get it working. Even better, I can mount samba drives, ping network machines through the TUN device, etc - it's all great. However, I'm noticing that if I have the directive: push "dhcp-option DNS 10.0.1.1" # Push our local DNS to clients Then some of… >>> More
Random DNS Client Issue with BIND9/Windows Server 2003 DNS

as seen on Stack Overflow - Search for 'Stack Overflow'
Within our office, we have a local server running DNS, for internal related "domains", (e.g. .internal, .office, .lan, .vpn, etc.). Randomly, only the hosts configured with those extensions will stop resolving on the Windows-based workstations. Sometimes it'll work for a couple weeks without issue… >>> More
DNS Tools - DNS and Few of its Concerning Terms and Tools

as seen on Article City - Search for 'Article City'
A DNS or Domain Name System lets you locate computers on a network or the Internet TCP/IP network by domain name. The DNS server sustains a database of domain names or host names along with their cor... [Author: Daisy Osbaldo - Computers and Internet - April 02, 2010] >>> More