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Hi,
I have a set up using ldirectord in direct routing to 30 media servers.
The director is a dell R210 4 core with 8GB memory and has 2 1Gbps network
connections, 1 public & 1 private.
Each real server is a Dell R610 16 core with 12GB memory and has the same
network connections as above.
All the servers are running centos 5.
According to the data center, these servers are connected to pairs of 40Gb
switches and there is ample capacity.
What happens is when the connections per real server get to around 1000 – 1200
concurrent connections, the bandwidth outgoing per server wont go above about
250Mbps which relates to about 7.5Gbps across all servers. At that time is
when the complaints start coming in about stream problems.
I guess the question is could the director somehow be limiting the throughput
on the real servers or is the dc not telling the truth about?
The bandwidth going through the nics on the director is around 50 – 75Mbps in
on the public nic and out on the private nic to the real servers.
Before we started using lvs, we had 10 servers running with round robin dns and
these would easily handle 900Mbps each at the same time.
lidrectord config file.
# Global Directives
checktimeout=10
checkinterval=5
#fallback=127.0.0.1:80
autoreload=yes
callback="/etc/ha.d/syncsettings.sh"
logfile="/var/log/ldirectord.log"
#logfile="local0"
#emailalert="admin@xxxxx"
#emailalertfreq=3600
#emailalertstatus=all
quiescent=no
virtual=147
real=172.31.214.12 gate 100
real=172.31.214.13 gate 100
real=172.31.214.14 gate 100
real=172.31.214.15 gate 100
real=172.31.214.16 gate 100
real=172.31.214.17 gate 100
real=172.31.214.18 gate 100
real=172.31.214.19 gate 100
real=172.31.214.21 gate 100
real=172.31.214.22 gate 100
real=172.31.214.23 gate 100
real=172.31.214.24 gate 100
real=172.31.214.25 gate 100
real=172.31.214.26 gate 100
real=172.31.214.28 gate 100
real=172.31.214.29 gate 100
real=172.31.214.30 gate 100
real=172.31.214.31 gate 100
real=172.31.214.32 gate 100
real=172.31.214.33 gate 100
real=172.31.214.34 gate 100
real=172.31.214.35 gate 100
real=172.31.214.36 gate 100
real=172.31.214.37 gate 100
real=172.31.214.38 gate 100
real=172.31.214.39 gate 100
real=172.31.214.40 gate 100
real=172.31.214.41 gate 100
real=172.31.214.42 gate 100
scheduler=wlc
protocol=fwm
persistent=60
netmask=255.255.255.255
service=http
checkport=1935
request="/"
receive="Wowza Media Server 2"
iptables
*mangle
:PREROUTING ACCEPT [438:421747]
:INPUT ACCEPT [438:421747]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [95:14749]
:POSTROUTING ACCEPT [122:21354]
-A PREROUTING –d *.*.*.147 -p tcp -m tcp --dport 80 -j MARK --set-mark 0x93
-A PREROUTING -d *.*.*.147 -p tcp -m tcp --dport 443 -j MARK --set-mark 0x93
-A PREROUTING -d *.*.*.147 -p tcp -m tcp --dport 554 -j MARK --set-mark 0x93
-A PREROUTING -d *.*.*.147 -p tcp -m tcp --dport 1935 -j MARK --set-mark 0x93
-A PREROUTING -d *.*.*.147 -p udp -m udp --dport 6970:9999 -j MARK --set-mark
0x93
COMMIT
the main port that is used is 1935.
Thanks in advance.
Regards,
Roger.
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