[lvs-users] The streaming connection would be disconnected when two minutes period is reached on LVS-DR

s96213514 s96213514 at ncnu.edu.tw
Fri Aug 14 18:28:15 BST 2009

Dear all,

   I have set a streaming server on LVS-DR architecture and its setting is like below.

LVS-DR: one front-end server and multiple real-servers
Front-end server: Linux kernel 2.6.18
Real-servers: Linux kernel 2.6.18 + Darwin streaming server 5.5.5
   I use Direct Routing architecture with WRR policy to distribute connections to each real-server evenly. 

   However, in my test, if the client watches the streaming movie via LVS, the streaming connection would be disconnected when 2 minutes period is reached. This does not occur if the client connects directly to one of the real-servers. The streaming server uses the RTSP protocol which is based on TCP protocol to establish streaming connection with clients. 
   I have tried to use ipvsadm -set and ipvsadm -L -timeout in command line to check and modify the LVS’ timeout value, and the value of tcp_keepalive_time (/proc/sys/net/ipv4/tcp_keepalive_time). I also have modified IPVS’ timeout table in Linux kernel (/net/ipv4/ipvs/ip_vs_proto_tcp.c), but the problem still remains.
   Any suggestions are appreciated.

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