Configure LVS + keepalived + ipvsadm on centos 7

Configure LVS + keepalived + ipvsadm on centos 7

I. Deployment Environment
Keepalived: 10.10.10.30 (centos 7)
Lvs1: 10.10.10.140 (centos 6.4)
Lvs2: 10.10.10.150 (centos 6.4)

2. Configure lvs1: 10.10.10.140
[[Email protected] ~] # Yum install-y httpd
[[Email protected] ~] #/Etc/init. d/httpd start
[[Email protected] ~] # Cd/var/www/html/
[[Email protected] HTML] # echo "OK"> keep.html
[[Email protected] ~] # Vim/etc/sysconfig/network-scripts/ifcfg-eth0
Device = eth0
Hwaddr = 00: 0C: 29: 15: B7: DC
Type = Ethernet
UUID = 93f4695a-8641-4360-9fce-5e3af0e32fc9
Onboot = Yes
Nm_controlled = Yes
Bootproto = static
Ipaddr = 10.10.10.140
Netmask = 255.255.255.0
Gateway = 10.10.10.30
[[Email protected] ~] #/Etc/init. d/network restart
[[Email protected] ~] #/Sbin/ifconfig eth0: 0 10.10.10.140 broadcast 10.10.10.255 netmask bandwidth 255.255.255 up

3. Configure lvs2: 10.10.10.150
[[Email protected] ~] # Yum install-y httpd
[[Email protected] ~] #/Etc/init. d/httpd start
[[Email protected] ~] # Cd/var/www/html/
[[Email protected] HTML] # echo "OK"> keep.html
[[Email protected] ~] # Vim/etc/sysconfig/network-scripts/ifcfg-eth0
Device = eth0
Hwaddr = 00: 0C: 29: 0d: 33: AC
Type = Ethernet
UUID = e04f57dc-ef9d-4563-bfa4-9c8c1e8fc870
Onboot = Yes
Nm_controlled = No
Bootproto = static
Ipaddr = 10.10.10.150
Netmask = 255.255.255.0
Gateway = 10.10.10.30
[[Email protected] ~] #/Etc/init. d/network restart
[[Email protected] ~] #/Sbin/ifconfig eth0: 0 10.10.10.140 broadcast 10.10.10.255 netmask bandwidth 255.255.255 up


4. Configure keepalived: 10.10.10.30
[[Email protected] ~] # Vim/etc/sysconfig/network-scripts/ifcfg-eno33554984
Hwaddr = 00: 0C: 29: DC: Fe: 1b
Type = Ethernet
Bootproto = static
Defroute = Yes
Peerdns = Yes
Peerroutes = Yes
20174_failure_fatal = No
# Ipv6init = Yes
# Define 6_autoconf = Yes
# Define 6_defroute = Yes
# Ipv6_peerdns = Yes
# Ipv6_peerroutes = Yes
# 6_failure_fatal = No
Name = eno33554984
# UUID = 56cae8b8-235f-471d-9051-2508ee149e48
Onboot = Yes
Nm_controlled = No
Ipaddr = 10.10.10.30
Netmask = 255.255.255.0
[[Email protected] ~] #/Etc/init. d/network restart

[[Email protected] ~] # Cd/data/keepalived/
[[Email protected] keepalived] # tar zxvf keepalived-1.2.12.tar.gz
[[Email protected] keepalived] # cd keepalived-1.2.12/
[[Email protected] keepalived-1.2.12] #./configure -- prefix =/usr/local/keepalived
[[Email protected] keepalived-1.2.12] # Make
[[Email protected] keepalived-1.2.12] # make install
[[Email protected] keepalived-1.2.2] # ln-S/usr/local/keepalived/etc/
[[Email protected] keepalived-1.2.2] # ln-S/usr/local/keepalived/etc/rc. d/init. d/keepalived/etc/init. d/
[[Email protected] keepalived-1.2.2] # ln-S/usr/local/keepalived/etc/sysconfig/
[[Email protected] keepalived-1.2.2] # ln-S/usr/local/keepalived/sbin/keepalived/usr/sbin/
[[Email protected] keepalived-1.2.12] # cd

# Keepalived health check http_get
[[Email protected] ~] #/Usr/local/keepalived/bin/genhash-s 10.10.10.140-P 80-U/keep.html
Md5sum = eff5bc1ef8ec9d03e640fc4370f5eacd

[[Email protected] ~] #/Usr/local/keepalived/bin/genhash-s 10.10.10.150-P 80-U/keep.html
Md5sum = eff5bc1ef8ec9d03e640fc4370f5eacd

[[Email protected] ~] # Vim/etc/keepalived. conf
! Configuration file for keepalived
Global_defs {
Router_id lvs_devel
}

Vrrp_instance vi_1 {
State master
Interface eno33554984
Virtual_router_id 51
Priority100
Advert_int 1
Authentication {
Auth_type pass
Auth_pass 1111
}
Virtual_ipaddress {
10.10.10.250
}
}

Virtual_server 10.10.10.250 80 {
Delay_loop 6
Lb_algo WRR
Lb_kind Dr
Nat_mask 255.255.255.0
Persistence_timeout 50
Protocol TCP

Real_server 10.10.10.140 80 {
Weight 1
Http_get {
URL {
Path/keep.html
Digest eff5bc1ef8ec9d03e640fc4370f5eacd
}
}
Connect_timeout 3
Nb_get_retry 3
Delay_before_retry 3
}

Real_server 10.10.10.150 80 {
Weight 1
Http_get {
URL {
Path/keep.html
Digest eff5bc1ef8ec9d03e640fc4370f5eacd
}
}
Connect_timeout 3
Nb_get_retry 3
Delay_before_retry 3
}
}
[[Email protected] ~] #/Etc/init. d/keepalived restart

5. Run the ipvsadm command on keepalived: 10.10.10.30 to test
[[Email protected] ~] # Yum install-y ipvsadm
[[Email protected] ~] # Ipvsadm-ln
IP Virtual Server version 1.2.1 (size = 4096)
Prot localaddress: Port sched1_flags
-> Remoteaddress: port forward weight activeconn inactconn
TCP 10.10.250: 80 WRR persistent 50
-> 10.10.10.140: 80 Route 1 0 0
-> 10.10.10.150: 80 Route 1 0 0

Run 10.10.10.140.
[[Email protected] HTML] # echo ""> keep.html
[[Email protected] ~] # Ipvsadm-ln
IP Virtual Server version 1.2.1 (size = 4096)
Prot localaddress: Port sched1_flags
-> Remoteaddress: port forward weight activeconn inactconn
TCP 10.10.250: 80 WRR persistent 50
-> 10.10.10.150: 80 Route 1 0 0

Then run 10.10.140.
[[Email protected] HTML] # echo "OK"> keep.html
[[Email protected] ~] # Ipvsadm-ln
IP Virtual Server version 1.2.1 (size = 4096)
Prot localaddress: Port sched1_flags
-> Remoteaddress: port forward weight activeconn inactconn
TCP 10.10.250: 80 WRR persistent 50
-> 10.10.10.140: 80 Route 1 0 0
-> 10.10.10.150: 80 Route 1 0 0

Configure LVS + keepalived + ipvsadm on centos 7