Hi,
Greetings, This Is Viswanath. I recently started using the HAProxy for
balancing the load among my set of available servers. I have described
my query in the following scenario.
I have configured HAProxy to balance the load for TCP among my available
Nodes and the configuration content is as follows
global
ulimit-n 10000
debug
defaults
balance roundrobin
retries 1
listen haserver_tcp 127.0.0.1:9000
mode tcp
option tcpka
clitimeout 150s
contimeout 30s
srvtimeout 30s
server node1 server1:9198 check inter 10s backup
server node2 server2:9198 check inter 10s
server node3 server3:9198 check inter 10s
With the above mentioned configuration I am able to achieve the basic
load balancing. But when my TCP Client created a single connection and
sends a long message, say greater than 8k bytes, in a small chunks of
512 bytes at a time (assuming 512 bytes makes a business oriented
logical interpretable message), and finally after sending 16 * 512 bytes
of message, my client closes the connection. For every message (512
bytes), my server performs an operation based on the message.
And now, when my TCP Client is sending the nth message (say 10th of 16),
the server comes down after performing 9 messages successfully, and the
TCP Client still sends the 10th message till 16th. And these are not
reaching the server.
As all the 16 messages are sent on the same connection (Connection is
made only once in the TCP Client), the HAProxy is not re routing the
remaining message to another node.
Is this scenario achievable through HAProxy?
And my next query is that, as I mentioned that my Client creates only
one Connection and sends Business oriented logical messages, for the
rest of the life time of the client, and can that traffic be load
balanced?
Eagerly waiting for your reply with comments and solutions if
applicable.
Thanks and kind regards
Viswanath R
Associate Software Engineer
Misys Software Solutions
Solutions for Banking, India
T +91 80 4040 3484
E viswanat...@misys.com
www.misys.com
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