lvs heartbeat ldirectord
lvs heartbeat ldirectord一 系統(tǒng)環(huán)境1 操作系統(tǒng) centos 5.4 主服務(wù)器，centos5.5 從服務(wù)器兩臺真實的web 服務(wù)器系統(tǒng)為 web1 是redhat5.1 w
lvs heartbeat ldirectord
一 系統(tǒng)環(huán)境
1 操作系統(tǒng) centos 5.4 主服務(wù)器，centos5.5 從服務(wù)器
兩臺真實的web 服務(wù)器系統(tǒng)為 web1 是redhat5.1 web2是 Redhat5.4
2網(wǎng)絡(luò)環(huán)境
主服務(wù)器 lvs-master ip 192.168.0.148
從服務(wù)器 lvs-slave ip 192.168.0.150
真實服務(wù)器 web1 ip 192.168.0.86
真實服務(wù)器 web2 ip 192.168.0.89
虛擬 ip 192.168.0.100
3所需要軟件
#yum -y install heartbeat heartbeat-ldirectord ipvsadm
#yum -y install heartbeat
Yum install net-snmp libnet
通過在線升級。
4系統(tǒng)設(shè)置
在主服務(wù)器lvs-master 設(shè)置hosts 文件
[root@lvs-master ~]# cat /etc/hosts
# Do not remove the following line, or various programs # that require network functionality will fail.
127.0.0.1 lvs-master.localdomain localhost ::1 localhost6.localdomain6 localhost6 lvs-master 192.168.0.148
lvs-slave 192.168.0.150
在從服務(wù)器lvs-slave 設(shè)置hosts 文件
[root@lvs-slave ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 lvs-slave.localdomain localhost
#::1 localhost6.localdomain6 localhost6
,lvs-slave 192.168.0.150
lvs-master 192.168.0.148
192.168.0.148 mail.ty.com
關(guān)閉不必要的服務(wù)
在主服務(wù)器lvs-master 和從服務(wù)器作系統(tǒng)操作
chkconfig bluetooth off
chkconfig firstboot off
chkconfig cups off
chkconfig ip6tables off
chkconfig iptables off
chkconfig isdn off
chkconfig kudzu off
chkconfig sendmail off
chkconfig smartd off
chkconfig autofs off
service bluetooth stop
service firstboot stop
service cups stop
service ip6tables stop
service iptables stop
service isdn stop
service kudzu stop
service sendmail stop
service smartd stop
service autofs stop
同步系統(tǒng)時間
#ntpdate time.nist.gov
對于 selinux 最好關(guān)掉 lvs-master 和lvs-slave 做如下操作
[root@lvs-master ~]# cat /etc/sysconfig/selinux
# This file controls the state of SELinux on the system.
,# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing. # disabled - SELinux is fully disabled.
SELINUX=enforcing
# SELINUXTYPE= type of policy in use. Possible values are: # targeted - Only targeted network daemons are protected. # strict - Full SELinux protection.
SELINUXTYPE=targeted
二 軟件安裝配置
1 軟件安裝
#yum -y install heartbeat heartbeat-ldirectord ipvsadm #yum -y install heartbeat
Yum install net-snmp libnet
檢查下是否完全安裝以下包
[root@lvs-master /]# rpm -qa |grep heartbeat
heartbeat-stonith-2.1.3-3.el5.centos
heartbeat-ldirectord-2.1.3-3.el5.centos
heartbeat-gui-2.1.3-3.el5.centos
heartbeat-2.1.3-3.el5.centos
heartbeat-devel-2.1.3-3.el5.centos
heartbeat-pils-2.1.3-3.el5.centos
[root@lvs-master /]# rpm -qa |grep ipvsadm
ipvsadm-1.24-10
復(fù)制heartbeat 配置文件
cp /usr/share/doc/heartbeat-2.1.3/authkeys /etc/ha.d
cp /usr/share/doc/heartbeat-2.1.3/ha.cf /etc/ha.d/
cp /usr/share/doc/heartbeat-2.1.3/ haresources /etc/ha.d
cp /usr/share/doc/heartbeat-ldirectord-2.1.3/ ldirectord.cf /etc/ha.d
3 修改配置文件
[root@lvs-master ~]# cd /etc/ha.d/
,Authkeys 文件配置
[root@lvs-master ha.d]# grep -v ^# authkeys
auth 3
3 md5 Hello!
修改認證方式為md5加密該文件只需要把選項的#號去掉即可
#chmod 600 authkeys //注意 該文件權(quán)限必須是600負責啟動會報錯。 ha.cf 文件配置
[root@lvs-master ha.d]# cat ha.cf |grep -v ^#
debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility local0
keepalive 2
deadtime 30
warntime 10
udpport 694
bcast eth0 # Linux
ucast eth0 192.168.0.150
auto_failback on
node lvs-master
node lvs-slave
respawn hacluster /usr/lib/heartbeat/ipfail
apiauth ipfail gid=haclient uid=hacluster
注：ucast eth0 192.168.0.0150 是從本地(lvs-master)的eth0網(wǎng)卡去ping lvs-slave的IP ，在lvs-slave 服務(wù)器上，需要把這個IP 改成lvs-master 的IP ，這是2臺LVS 唯一區(qū)別
Haresources 文件配置
[root@lvs-master ha.d]# cat haresources |grep -v ^#
lvs-master lvs_switch 192.168.0.100 lvs_dr ldirectord
lvs-master 是主服務(wù)器的名稱（heartbeat 是通過主機名來區(qū)分主服節(jié)點的所以必須要注意） 可以通過
[root@lvs-master ha.d]# uname -n
lvs-master 查看主機名
192.168.0.100 是虛擬ip 所有域名都要解析到這個i p （在真實的服務(wù)器虛擬ip 要是isp 提供的公網(wǎng)ip ）
Lvs-switch 是啟動腳本
,lvs_dr 是啟動腳本
配置lvs-switch 啟動腳本
[root@lvs-master init.d]# pwd
/etc/rc.d/init.d
[root@lvs-master init.d]# cat lvs_switch
#!/bin/sh
# description: close lo:0 and arp_ignore
VIP=192.168.0.100
. /etc/rc.d/init.d/functions
case $1 in
start)
echo "start director server and close lo:0"
#ifconfig lo:0 down
echo "1" > /proc/sys/net/ipv4/ip_forward
echo "0" > /proc/sys/net/ipv4/conf/all/arp_announce
;;
stop)
echo "start Real Server"
echo "0" >/proc/sys/net/ipv4/ip_forward
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up /sbin/route add -host $VIP dev lo:0
echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p
;;
*)
echo "Usage: lvs {start|stop}"
exit 1
esac
配置lvs-dr 啟動腳本
[root@lvs-master init.d]# pwd
/etc/rc.d/init.d
[root@lvs-master init.d]# cat lvs_dr
#!/bin/sh
# description: start LVS of Directorserver
VIP=192.168.0.100
RIP1=192.168.0.86
,RIP2=192.168.0.89
SERVICE=80 #http is used in this case
. /etc/rc.d/init.d/functions
case $1 in
start)
echo "start LVS of DirectorServer"
# set ip_forward&send_redirects
echo "0" >/proc/sys/net/ipv4/ip_forward
echo "1" >/proc/sys/net/ipv4/conf/all/send_redirects
echo "1" >/proc/sys/net/ipv4/conf/default/send_redirects
echo "1" >/proc/sys/net/ipv4/conf/eth0/send_redirects
# set the Virtual IP Address
/sbin/ifconfig eth0:0 $VIP broadcast $VIP netmask 255.255.255.255 up /sbin/route add -host $VIP dev eth0:0
#Clear IPVS table
/sbin/ipvsadm -C
#set LVS
/sbin/ipvsadm -A -t $VIP:$SERVICE -s rr
/sbin/ipvsadm -a -t $VIP:$SERVICE -r $RIP1:$SERVICE -g -w 1
/sbin/ipvsadm -a -t $VIP:$SERVICE -r $RIP2:$SERVICE -g -w 1
#/sbin/ipvsadm -a -t $VIP:$SERVICE -r $RIP3:$SERVICE -g -w 1 /sbin/ipvsadm --set 30 120 300
#Run LVS
/sbin/ipvsadm
#end
;;
stop)
echo "close LVS Directorserver"
/sbin/ipvsadm -C
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
chmod x lvs_dr lvs_swtch 加上可執(zhí)行權(quán)限
軟鏈接 ln –s /etc/rc.d/init.d/lvs_switch /etc/ha.d/resource.d/
ln –s /etc/rc.d/init.d/lvs_dr /etc/ha.d/resource.d/
[root@lvs-master ha.d]# cat ldirectord.cf | grep -v ^#
checktimeout=3
,checkinterval=1
fallback=127.0.0.1:80
autoreload=yes
logfile="/var/log/ldirectord.log"
quiescent=no
virtual=192.168.0.100:80
real=192.168.0.86:80 gate
real=192.168.0.89:80 gate
service=http
request="index.html"
receive="Test Page"
scheduler=rr
#persistent=600
#netmask=255.255.255.255
protocol=tcp
checktype=connect
checkport=80
request="index.html"
receive="Test Page"
于是主服務(wù)器lvs-master 配置完成
從服務(wù)器 lvs-slave安裝配置
軟件安裝
#yum -y install heartbeat heartbeat-ldirectord ipvsadm
#yum -y install heartbeat
Yum install net-snmp libnet
在主服務(wù)器復(fù)制文件到從服務(wù)器
[root@lvs-master ha.d]# scp ha.cf haresources ldirectord.cf root@192.168.0.150:/etc/ha.d/ 復(fù)制到從服務(wù)器上。
三 真實服務(wù)器web1和web2的配置
Web1和web2的腳本內(nèi)容相同。
cat /etc/rc.d/init.d/lvs_rs
#!/bin/sh
# chkconfig: 2345 72 08
# description: Config realserver lo:0 port and apply arp patch VIP=192.168.0.100
. /etc/rc.d/init.d/functions
case $1 in
authkeys
,start)
echo "lo:0 port starting"
echo "0" >/proc/sys/net/ipv4/ip_forward
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up /sbin/route add -host $VIP dev lo:0
echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p
;;
stop)
echo "lo:0 port closing"
ifconfig lo:0 down
echo "1" > /proc/sys/net/ipv4/ip_forward
echo "0" > /proc/sys/net/ipv4/conf/all/arp_announce
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
修改文件的權(quán)限
Chmod x /etc/rc.d/init.d/lvs_rs
分別啟動該腳本
/etc/rc.d/init.d/lvs_rs start
四 測試heartbeat 的性能
在主lvs-master 和從服務(wù)器lvs-slave 分別啟動
/etc/init.d/heartbeat start
/etc/ha.d/resource.d/ldirectord start
在主服務(wù)器lvs-master 通過命令 ip add
6: eth0:
inet 192.168.0.148/24 brd 192.168.0.255 scope global eth0
inet 192.168.0.100/32 brd 192.168.0.100 scope global eth0:0 inet6 fe80::20c:29ff:fe2d:ea18/64 scope link
虛擬ip （vip ）192.168.0.100被綁定到eth0:0
查看負載均衡情況可以通過
[root@lvs-master ha.d]# ipvsadm -ln
,IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.0.100:80 rr
-> 192.168.0.89:80 Route 1 0 0
當后臺web 服務(wù)器down 了就會自動從ipvsadm 表中刪除該主機的信息。如果恢復(fù)了就會自動添加上去
2 將主 lvs-master關(guān)掉或?qū)⒕W(wǎng)卡禁用。到從服務(wù)器lvs-slave 上就會看到從服務(wù)器接管了主服務(wù)器的角色。在eth0:0綁定了192.168.0.100繼續(xù)提高服務(wù)。
等到主lvs-master 恢復(fù)。ip 會切換的lvs-master 上。