生产环境模拟实现keepalived+Nginx调度器+httpd的高可用集群
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具体过程是用nginx做负载均衡,可以将Nginx和主机放在同一台机子上,也可以分开放置,只不过分开的话要指明RS是Nginx的主机地址。至于直接将虚拟地址配置在Nginx主机上我暂时还未成功
下面附上我的双主模型的主keepalived服务器的配置
! Configuration File for keepalived global_defs { notification_email { [email protected] vrrp_mcast_group4 224.0.11.100 } notification_email_from [email protected] smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id sjf1 } vrrp_script chk_mantaince { script "[[ -e /etc/keepalived/down ]] && exit 1 || exit 0" interval 1 weight -4 } vrrp_instance VI_1 { state MASTER interface eth1 virtual_router_id 15 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 11111234 } virtual_ipaddress { 11.1.0.11/16 dev eth1 } track_script { chk_mantaince } notify_master "/etc/keepalived/inotify.sh master" notify_backup "/etc/keepalived/inotify.sh backup" notify_fault "/etc/keepalived/inotify.sh fault"} virtual_server 11.1.0.11 80 { delay_loop 6 lb_algo rr lb_kind DR # persistence_timeout 50 protocol TCP sorry_server 11.1.0.201 80 real_server 11.1.0.203 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 11.1.0.204 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } } vrrp_instance VI_2 { state BACKUP interface eth1 virtual_router_id 16 priority 97 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 11.1.0.22/16 dev eth1 } track_script { chk_mantaince } notify_master "/etc/keepalived/inotify.sh master" notify_backup "/etc/keepalived/inotify.sh backup" notify_fault "/etc/keepalived/inotify.sh fault"} virtual_server 11.1.0.22 80 { delay_loop 6 lb_algo rr lb_kind DR # persistence_timeout 50 protocol TCP sorry_server 11.1.0.201 80 real_server 11.1.0.205 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 11.1.0.206 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } }
下面附上我的从keepalived的配置
! Configuration File for keepalived global_defs { notification_email { [email protected] vrrp_mcast_group4 224.0.11.100 } notification_email_from [email protected] smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id sjf2 } vrrp_script chk_mantaince { script "[[ -e /etc/keepalived/down ]] && exit 1 || exit 0" interval 1 weight -4 } vrrp_instance VI_1 { state BACKUP interface eth1 virtual_router_id 15 priority 98 advert_int 1 authentication { auth_type PASS auth_pass 11111234 } virtual_ipaddress { 11.1.0.11/16 dev eth1 } track_script { chk_mantaince } notify_master "/etc/keepalived/inotify.sh master" notify_backup "/etc/keepalived/inotify.sh backup" notify_fault "/etc/keepalived/inotify.sh fault"} virtual_server 11.1.0.11 80 { delay_loop 6 lb_algo rr lb_kind DR # persistence_timeout 50 protocol TCP sorry_server 11.1.0.201 80 real_server 11.1.0.203 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 11.1.0.204 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } } vrrp_instance VI_2 { state MASTER interface eth1 virtual_router_id 16 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 11.1.0.22/16 dev eth1 } track_script { chk_mantaince } notify_master "/etc/keepalived/inotify.sh master" notify_backup "/etc/keepalived/inotify.sh backup" notify_fault "/etc/keepalived/inotify.sh fault"} virtual_server 11.1.0.22 80 { delay_loop 6 lb_algo rr lb_kind DR # persistence_timeout 50 protocol TCP sorry_server 11.1.0.201 80 real_server 11.1.0.205 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 11.1.0.206 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } }
下面在附上我的设置虚拟网络的脚本
#!/bin/bash vip=‘11.1.0.11 ‘vport=‘80‘ netmask=‘255.255.255.255‘ iface=‘lo:0‘case $1 instart) echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce ifconfig $iface $vip netmask $netmask broadcast $vip up route add -host $vip dev $iface ;; stop) ifconfig $iface down echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce esac
下面附上我的跟踪脚本
#!/bin/bash #auth sjf #date 2016.11.1 vip=192.16.11.99contact=‘[email protected]‘notify() { mailsubject="`hostname` to be $1 ;@vip floating " mailbody="`date +‘%F %H:%M%S‘` ;vrrp transited , `hostname ` changed to be $1 " echo $mailbody | mail -s "$mailsubject" $contact}case "$1" inmaster) notify master exit 0 ;; backup) notify backup exit 0 ;; fault) notify fault exit 0 ;; *) echo ‘Usage: `basename $0` {maser|backup|fault} ‘ exit 1esac
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