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Hello All,
Last month I have success implement heartbeat LVS-TUN with ldirectord.conf in
ldirector server:
checktimeout=10
checkinterval=2
autoreload=yes
logfile="/var/log/ldirectord.log"
quiescent=yes
virtual=10.10.20.100:25
fallback=127.0.0.1:25
real=10.10.20.130:25 ipip
real=10.10.20.131:25 ipip
service=smtp
scheduler=wlc
#persistent=600
protocol=tcp
And adding new VIP :
eth0:0 Link encap:Ethernet HWaddr 00:13:72:25:ED:01
inet addr:10.10.20.100 Bcast:10.10.20.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:177
For Real Server:
Adding tunl0:
tunl0 Link encap:IPIP Tunnel HWaddr
inet addr:10.10.20.100 Mask:255.255.255.255
UP RUNNING NOARP MTU:1480 Metric:1
RX packets:17197237 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2374949221 (2.2 GiB) TX bytes:0 (0.0 b)
and in sysctl.conf:
net.ipv4.ip_forward = 1
net.ipv4.conf.eth0.arp_ignore = 1
net.ipv4.conf.eth0.arp_announce = 2
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.tunl0.arp_ignore = 1
net.ipv4.conf.tunl0.arp_announce = 2
And with 1 ldirector + 2 Realserver was work wonderfull. But today I add new
real server with same configuration:
a. Add tunl0 with same VIP
b. Add sysctl.conf like above
c. Same firewall with 2 realserver
in ldirectord.conf now:
checktimeout=10
checkinterval=2
autoreload=yes
logfile="/var/log/ldirectord.log"
quiescent=yes
virtual=10.10.20.100:25
fallback=127.0.0.1:25
real=10.10.20.130:25 ipip
real=10.10.20.131:25 ipip
real=10.10.20.161:25 ipip
service=smtp
scheduler=wlc
#persistent=600
protocol=tcp
But it's not work. Is there any missing step ?
FYI:
Ldirector using Fedora Core 5 with Kernel 2.6.18 and Real Server 1 & 2 (which
works) using Fedora Core 5 with Kernel 2.6.18 too. But latest real server
(which not works) using CentOS 4.4 with kernel 2.6.9-42.
If I checked the logs in latest realserver which not works, there is only
connection from ldirector:
May 16 19:30:04 trilian postfix/smtpd[15280]: connect from unknown[10.10.20.99]
May 16 19:30:04 trilian postfix/smtpd[15280]: disconnect from
unknown[10.10.20.99]
May 16 19:30:06 trilian postfix/smtpd[15280]: connect from unknown[10.10.20.99]
May 16 19:30:06 trilian postfix/smtpd[15280]: disconnect from
unknown[10.10.20.99]
May 16 19:30:08 trilian postfix/smtpd[15280]: connect from unknown[10.10.20.99]
May 16 19:30:08 trilian postfix/smtpd[15280]: disconnect from
unknown[10.10.20.99]
May 16 19:30:10 trilian postfix/smtpd[15280]: connect from unknown[10.10.20.99]
May 16 19:30:10 trilian postfix/smtpd[15280]: disconnect from
unknown[10.10.20.99]
May 16 19:30:12 trilian postfix/smtpd[15280]: connect from unknown[10.10.20.99]
May 16 19:30:12 trilian postfix/smtpd[15280]: disconnect from
unknown[10.10.20.99]
but in successfully real server (Real server 1 & 2):
May 16 12:38:29 tanahlot postfix/qmgr[26926]: B35A1810197: from=<>, size=3713,
nrcpt=1 (queue active)
May 16 12:38:29 tanahlot postfix/smtpd[29208]: disconnect from
batubulan.net2cyber.net[127.0.0.1]
May 16 12:38:29 tanahlot amavis[30211]: (30211-05) Passed CLEAN,
[203.153.119.26] <> -> <kusnur@xxxxxxxxx>, Message-ID:
<20070516053657.791E075477@cluster1>, mail_id: uxR-D6ZryJi9, Hits: -100.74,
queued_as: B35A1810197, 231 ms
May 16 12:38:29 tanahlot postfix/smtp[29222]: 865BA810163:
to=<kusnur@xxxxxxxxx>, relay=127.0.0.1[127.0.0.1], delay=0, status=sent (250
2.6.0 Ok, id=30211-05, from MTA([127.0.0.1]:10025): 250 Ok: queued as
B35A1810197)
May 16 12:38:29 tanahlot postfix/qmgr[26926]: 865BA810163: removed
May 16 12:38:29 tanahlot postfix/smtp[30379]: B35A1810197:
to=<kusnur@xxxxxxxxxxxxxxxxxx>, relay=metro.com.s7a1.psmtp.com[64.18.6.14],
delay=0, status=sent (250 M2007051612381705120 Message accepted for delivery)
If I tried to remove working Realserver 1 & 2 and let only Realserver 3 which
not work in ldirectord.conf, then trying to telnet port 25 to Virtual IP, then
there is no response. Trying check tcpdump in Realserver 3 seems, there is no
smtp connection from outside except from LDirector server. But If I telnet to
port 25 in Real IP (not tunl0) then I get response like smtp connection.
Need your help
--
Best regards,
Kalpin mailto:kalpin@xxxxxxxxxxxxx
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