LVS部署(转载)
转自：http://blog.iyunv.com/space.php?uid=22600159&do=blog&id=2124185LVS with DR mode
1、Servers environment
System: CentOS 5.2
lvs-m : 192.168.1.221
lvs-s : 192.168.1.222
web-1 : 192.168.1.2
web-2 : 192.168.1.3
VIP : 192.168.1.220
2、Install related softwares
lvs-m# yum install ipvsadm
lvs-m# yum install heartbeat-ldirectord
lvs-m# yum install heartbeat
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The above operations also need implement on lvs-s.
3、Configure LVS
lvs-m# cd /etc/ha.d
lvs-m# cp /usr/share/doc/heartbeat-2.1.3/ha.cf .
lvs-m# cp /usr/share/doc/heartbeat-2.1.3/authkeys .
lvs-m# cp /usr/share/doc/heartbeat-2.1.3/haresources .
lvs-m# cp /usr/share/doc/heartbeat-ldirectord-2.1.3/ldirectord.cf .
[*]
The above operations also need implement on lvs-s.
4、Configure HA
lvs-m# vi ha.cf
modfiy:
#logfile /var/log/ha-log
#keepalive 2
#deadtime 30
#warntime 10
#initdead 120
#udpport 694
#bcast eth0 # Linux
ucast eth0 192.168.1.2
#node ken3
#node kathy
#ping 10.10.10.254
to:
logfile /var/log/ha-log
keepalive 2
deadtime 30
warntime 10
initdead 120
udpport 694
bcast eth0 # Linux
ucast eth0 192.168.1.222 //lvs-s's IP
node lvs-m # the node name must same as the output of "uname -n"
node lvs-s # the node name must same as the output of "uname -n"
ping 192.168.1.222 //lvs-s's IP
[*]
The above operations also need implement on lvs-s.
[*]
Attention the ip address.
5、Configure auth mode
lvs-m# vi authkeys
modfiy:
#auth 1
#1 crc
to:
auth 1
1 crc
lvs-m# chomd 600 autkeys
[*]
The above operations also need implement on lvs-s.
6、Configure virtual Service
lvs-m# vi haresources
Removin all then add following line:
lvs-m IPaddr::192.168.1.220/32/eth0:0 ldirectord //here, node lvs-m works as master
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the lvs-s server as follows:
lvs-m IPaddr::192.168.1.220/32/eth0:0 ldirectord //here, node lvs-m works as master
If we configure them work as master/master mode, and the vip on lvs-s is 192.168.1.230, the configuration in both haresources files as follows:
lvs-m IPaddr::192.168.1.220/32/eth0:0 ldirectord
lvs-s IPaddr::192.168.1.230/32/eth0:0 ldirectord
Add following lines to /etc/sysctl.conf
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.conf.lo.arp_announce = 0
net.ipv4.conf.eth0.arp_ignore = 0
net.ipv4.conf.eth0.arp_announce = 0
and change "net.ipv4.ip_forward = 0" to "net.ipv4.ip_forward = 1"
lvs-m# sysctl -p
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The above operations also need implement on lvs-s.
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On Web server
web-n# vi /root/vip.sh
Add:
################################################################################
# Virtual IP Setup
################################################################################
ifconfig lo:0 192.168.1.220 broadcast 192.168.1.220 netmask 255.255.255.255 up
route add -host 192.168.1.220 dev lo:0
################################################################################
# The end
################################################################################
web-n# chmod a+x /root/vip.sh
web-n# echo "/root/vip.sh" >> /etc/rc.local
And add the following lines to /etc/sysctl.conf on web server
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.conf.lo.arp_announce = 0
web-n# sysctl -p
7、Configure hosts
lvs-m# vi /etc/hosts
192.168.1.221 lvs-m
192.168.1.222 lvs-s
[*]
The above operations also need implement on lvs-s.
8、Configure ldirectord
lvs-m# vi ldirectord.cf
Add:
checktimeout=3
checkinterval=1
autoreload=yes
quiescent=no
virtual=192.168.1.220:80
real=192.168.1.2:80 gate 1 ".healthcheck.html", "OKAY"
real=192.168.1.3:80 gate 1 ".healthcheck.html", "OKAY"
fallback=127.0.0.1:80 gate 1 ".healthcheck.html", "OKAY"
service=http
request=".healthcheck.html"
receive="Test Page"
scheduler=rr
protocol=tcp
persistent = 600
[*]
The above operations also need implement on lvs-s.
Create healthcheck page in web server
web-n# echo "OKAY" > /var/www/html/.healthcheck.html
9、Start heartbeat
lvs-m# chkconfig heartbeat on
lvs-m# service heartbeat start
lvs-s# chkconfig heartbeat on
lvs-s# service heartbeat start
10、Check ipvsadm status
lvs-m# watch ipvsadm -L -n
LVS with NAT mode
1、Servers environment
lvs-m : eth0:192.168.1.221
eth1:172.16.1.1
lvs-s : eth0:192.168.1.222
eht1:172.16.1.254
web-1 : eth0:172.16.1.2 //gw:172.16.1.1
web-2 : eth0:172.16.1.3 //gw:172.16.1.1
VIP : 192.168.1.220
2、Install related softwares
lvs-m# yum install ipvsadm
lvs-m# yum install heartbeat-ldirectord
lvs-m# yum install heartbeat
[*]
The above operations also need implement on lvs-s.
3、Configure LVS
lvs-m# cd /etc/ha.d
lvs-m# cp /usr/share/doc/heartbeat-2.1.3/ha.cf .
lvs-m# cp /usr/share/doc/heartbeat-2.1.3/authkeys .
lvs-m# cp /usr/share/doc/heartbeat-2.1.3/haresources .
lvs-m# cp /usr/share/doc/heartbeat-ldirectord-2.1.3/ldirectord.cf .
[*]
The above operations also need implement on lvs-s.
4、Configure HA
lvs-m# vi ha.cf
modfiy:
#logfile /var/log/ha-log
#keepalive 2
#deadtime 30
#warntime 10
#initdead 120
#udpport 694
#bcast eth0 # Linux
ucast eth0 192.168.1.2
#node ken3
#node kathy
#ping 10.10.10.254
to:
logfile /var/log/ha-log
keepalive 2
deadtime 30
warntime 10
initdead 120
udpport 694
bcast eth0 # Linux
ucast eth0 192.168.1.222 //lvs-s's IP
node lvs-m # uname -n
node lvs-s # uname -n
ping 192.168.1.222 //lvs-s's IP
[*]
The above operations also need implement on lvs-s.
[*]
Attention the ip address.
5、Configure auth mode
lvs-m# vi authkeys
modfiy:
#auth 1
#1 crc
to:
auth 1
1 crc
lvs-m# chomd 600 autkeys
[*]
The above operations also need implement on lvs-s.
6、Configure virtual Service
lvs-m# vi haresources
Add:
lvs-m IPaddr::192.168.1.220/32/eth0:0 ldirectord //lvs-m server
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the lvs-s server as follows:
lvs-m IPaddr::192.168.1.220/32/eth0:0 ldirectord
Add following lines to /etc/sysctl.conf
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.conf.lo.arp_announce = 0
net.ipv4.conf.eth0.arp_ignore = 0
net.ipv4.conf.eth0.arp_announce = 0
and change "net.ipv4.ip_forward = 0" to "net.ipv4.ip_forward = 1"
[*]
The above operations also need implement on lvs-s.
7、Configure hosts
lvs-m# vi /etc/hosts
192.168.1.221 lvs-m
192.168.1.222 lvs-s
[*]
The above operations also need implement on lvs-s.
8、Configure ldirectord
lvs-m# vi ldirectord.cf
Add:
checktimeout=3
checkinterval=1
autoreload=yes
quiescent=no
virtual=192.168.1.220:80
real=172.16.1.2:80 gate 1 ".healthcheck.html", "OKAY"
real=172.16.1.3:80 gate 1 ".healthcheck.html", "OKAY"
fallback=127.0.0.1:80 gate 1 ".healthcheck.html", "OKAY"
service=http
request=".healthcheck.html"
receive="Test Page"
scheduler=rr
protocol=tcp
persistent = 600
[*]
The above operations also need implement on lvs-s.
Create healthcheck page in web server
web-n# echo "OKAY" > /var/www/html/.healthcheck.html
9、Start heartbeat
lvs-m# chkconfig heartbeat on
lvs-m# service heartbeat start
lvs-s# chkconfig heartbeat on
lvs-s# service heartbeat start
10、Check ipvsadm status
lvs-m# watch ipvsadm -L -n
Some useful notes
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LVS forwarding:
gate -g Route LVS-DR
ipip -i Tunnel LVS-TUN
masq -m Masq LVS-NAT
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Check the healthcheck page
web-n# lynx -dump 127.0.0.1/.healthcheck.html
页:
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