Keepalived: Difference between revisions
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answer the questions with "Yes" and then "Backup" | answer the questions with "Yes" and then "Backup" | ||
create a file <pre>/etc/keepalived/keepalived.conf</pre> with following contend (adapt network adresses) | |||
global_defs { | global_defs { | ||
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} | } | ||
= Real Servers setup = | = Real Servers setup = |
Revision as of 08:34, 25 January 2011
Example keepalived setup on debian for OX
Directors setup
test1:~# apt-get install keepalived dpkg-reconfigure ipvsadm
answer the questions with "Yes" and then "Backup"
create a file
/etc/keepalived/keepalived.conf
with following contend (adapt network adresses)
global_defs { router_id OX } vrrp_sync_group OX_GROUP { group { OX_GOUP } } vrrp_instance OX_VRRP { state BACKUP interface eth0 garp_master_delay 10 virtual_router_id 10 priority 101 nopreempt advert_int 1 authentication { auth_type AH # Simple 'PASS' can use auth_pass 1234 # example password '1234' } virtual_ipaddress { 10.20.30.77/24 brd 10.20.30.255 dev eth0 # virtual service ip 10.20.30.67 } virtual_ipaddress_excluded { } } virtual_server_group OX_HTTP { 10.20.30.77 80 # virtual ip and port 80 } virtual_server_group OX_OL_PUSH { 10.20.30.77 44335 # VIP VPORT } virtual_server group OX_WEB { delay_loop 3 lvs_sched rr lvs_method DR protocol TCP virtualhost 10.20.30.77 real_server 10.20.30.123 80 { weight 1 inhibit_on_failure HTTP_GET { url { path /servlet/TestServlet status_code 200 } connect_port 80 connect_timeout 10 } } real_server 10.20.30.321 80 { weight 1 inhibit_on_failure HTTP_GET { url { path /servlet/TestServlet status_code 200 } connect_port 80 connect_timeout 10 } } } virtual_server group OX_OL_PUSH { delay_loop 3 lvs_sched rr lvs_method DR protocol UDP real_server 10.20.30.123 44335 { weight 1 inhibit_on_failure TCP_CHECK { connect_port 9999 connect_timeout 5 } } real_server 10.20.30.321 44335 { weight 1 inhibit_on_failure TCP_CHECK { connect_port 9999 connect_timeout 5 } } }
Real Servers setup
create a script that runs on every machine start:
#! /bin/sh set -x IP=10.20.30.77 echo 0 > /proc/sys/net/ipv4/conf/lo/rp_filter echo 1 > /proc/sys/net/ipv4/ip_forward echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce /sbin/ifconfig lo:0 $IP netmask 255.255.255.255 broadcast $IP up /sbin/route add -host $IP dev lo:0