KeepAliveD，Rackspace Cloud，单播 – 两个LB都进入MASTER状态…？

我已经在Active-> Passive对中设置了两个HAProxy负载平衡器。

KeepAliveD将用于MASTER和BACKUP服务器之间的故障转移。

像大多数云一样，Multicast不受支持，所以我不能使用虚拟IP。 相反，我试图使用Unicast，这是我在网上看到的一种解决scheme。

我的问题是BACKUP KeepAliveD实例立即进入MASTER状态。 它可以ping MASTER服务器，但它是不能够意识到，确实是起来。

• HyperDBconfiguration主/从
• RTMP代理服务器
• 使用-Name参数时，Get-Cluster cmdlet失败
• Linux上的open-iscsi启动程序没有看到主动/被动open-e目标的被动方
• 地理冗余工具

我将自己列为系统pipe理员，所以请原谅我。 出于这个原因，我希望有一些明显的错误，我可以很容易地纠正…

__[HAProxy Active, KeepAliveD MASTER, 10.179.66.95] / ----| | \__[HAProxy Passive, KeepAliveD BACKUP, 10.179.74.172] 

configuration如下…

KeepAliveD版本

1.2.9（单播支持在1.2.8中添加，并在1.2.9中添加）。

http://www.keepalived.org/changelog.html

在/etc/sysctl.conf中的两台服务器上

 # Nonlocal bind for use with KeepAliveD. Allows this instance to take on a non-local IP for failover. net.ipv4.ip_nonlocal_bind=1 

KeepAliveD MASTER在/etc/keepalived/keepalived.conf中

 ! Configuration File for keepalived global_defs { notification_email { [email protected] } notification_email_from [email protected] smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id LB_MASTER_ACTIVE } # Define the script used to check if haproxy is still working vrrp_script chk_haproxy { script "killall -0 haproxy" # verify the pid existance interval 2 # check every 2 seconds weight 2 # add 2 points of prio if OK } # Virtual interface. vrrp_instance VI_1 { state MASTER interface eth1 virtual_router_id 51 priority 101 smtp_alert # Activate e-mail notifications. #advert_int 1 authentication { auth_type PASS auth_pass 1111 } # IP of myself and my peer for unicast based failover. vrrp_unicast_bind 10.179.66.95 # My IP. vrrp_unicast_peer 10.179.74.172 # The other's IP. # Check if HAProxy is running or not. track_script { chk_haproxy } } 

KeepAliveD备份在/etc/keepalived/keepalived.conf中

 ! Configuration File for keepalived global_defs { notification_email { [email protected] } notification_email_from [email protected] smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id LB_BACKUP_PASSIVE } # Define the script used to check if haproxy is still working vrrp_script chk_haproxy { script "killall -0 haproxy" interval 2 weight 2 } # Virtual interface. vrrp_instance VI_1 { state BACKUP interface eth1 virtual_router_id 51 priority 100 # MASTER is priority 101. smtp_alert # Activate e-mail notifications. advert_int 1 authentication { auth_type PASS auth_pass 1111 } # IP of myself and my peer for unicast based failover. vrrp_unicast_bind 10.179.74.172 # My IP. vrrp_unicast_peer 10.179.66.95 # The other's IP. # Check if HAProxy is running or not. track_script { chk_haproxy } } 

消息在KeepAliveD启动时login到KeepAliveD MASTER，tail -f / var / log / messages

 Nov 28 10:54:02 mysql-read-lb-1 Keepalived[30158]: Starting Keepalived v1.2.7 (02/21,2013) Nov 28 10:54:02 mysql-read-lb-1 Keepalived[30159]: Starting Healthcheck child process, pid=30161 Nov 28 10:54:02 mysql-read-lb-1 Keepalived[30159]: Starting VRRP child process, pid=30162 Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Interface queue is empty Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Interface queue is empty Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: No such interface, eth1 Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: No such interface, eth2 Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Netlink reflector reports IP 10.179.66.95 added Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Netlink reflector reports IP 192.168.3.1 added Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Netlink reflector reports IP fe80::be76:4eff:fe08:9227 added Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Netlink reflector reports IP fe80::be76:4eff:fe08:8b4d added Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Registering Kernel netlink reflector Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Registering Kernel netlink command channel Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Opening file '/etc/keepalived/keepalived.conf'. Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: No such interface, eth1 Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: No such interface, eth2 Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Netlink reflector reports IP 10.179.66.95 added Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Netlink reflector reports IP 192.168.3.1 added Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Netlink reflector reports IP fe80::be76:4eff:fe08:9227 added Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Netlink reflector reports IP fe80::be76:4eff:fe08:8b4d added Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Registering Kernel netlink reflector Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Registering Kernel netlink command channel Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Registering gratuitous ARP shared channel Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Opening file '/etc/keepalived/keepalived.conf'. Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Configuration is using : 7559 Bytes Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Truncating auth_pass to 8 characters Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Configuration is using : 64400 Bytes Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: Using LinkWatch kernel netlink reflector... Nov 28 10:54:02 mysql-read-lb-1 Keepalived_vrrp[30162]: VRRP sockpool: [ifindex(3), proto(112), fd(10,11)] Nov 28 10:54:02 mysql-read-lb-1 Keepalived_healthcheckers[30161]: Using LinkWatch kernel netlink reflector... Nov 28 10:54:03 mysql-read-lb-1 Keepalived_vrrp[30162]: VRRP_Instance(VI_1) Transition to MASTER STATE Nov 28 10:54:04 mysql-read-lb-1 Keepalived_vrrp[30162]: VRRP_Instance(VI_1) Entering MASTER STATE Nov 28 10:54:04 mysql-read-lb-1 Keepalived_vrrp[30162]: Remote SMTP server [127.0.0.1]:25 connected. Nov 28 10:54:04 mysql-read-lb-1 Keepalived_vrrp[30162]: SMTP alert successfully sent. 

当KeepAliveD启动时，消息login到KeepAliveD BACKUP，tail -f / var / log / messages

你会注意到它直接进入MASTER状态蝙蝠，但应该留在备份…

 Nov 28 10:57:35 load-balancer-1-passive Keepalived[25048]: Starting Keepalived v1.2.7 (02/21,2013) Nov 28 10:57:35 load-balancer-1-passive Keepalived[25049]: Starting Healthcheck child process, pid=25050 Nov 28 10:57:35 load-balancer-1-passive Keepalived[25049]: Starting VRRP child process, pid=25052 Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Interface queue is empty Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: No such interface, eth1 Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: No such interface, eth2 Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Netlink reflector reports IP 10.179.74.172 added Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Netlink reflector reports IP 192.168.3.2 added Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Netlink reflector reports IP fe80::be76:4eff:fe08:93fc added Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Netlink reflector reports IP fe80::be76:4eff:fe08:940c added Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Registering Kernel netlink reflector Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Registering Kernel netlink command channel Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Opening file '/etc/keepalived/keepalived.conf'. Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Interface queue is empty Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: No such interface, eth1 Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: No such interface, eth2 Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Netlink reflector reports IP 10.179.74.172 added Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Configuration is using : 7595 Bytes Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Netlink reflector reports IP 192.168.3.2 added Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Netlink reflector reports IP fe80::be76:4eff:fe08:93fc added Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Netlink reflector reports IP fe80::be76:4eff:fe08:940c added Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Registering Kernel netlink reflector Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Registering Kernel netlink command channel Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Registering gratuitous ARP shared channel Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Opening file '/etc/keepalived/keepalived.conf'. Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Truncating auth_pass to 8 characters Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Configuration is using : 64436 Bytes Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Using LinkWatch kernel netlink reflector... Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: VRRP_Instance(VI_1) Entering BACKUP STATE Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: VRRP sockpool: [ifindex(3), proto(112), fd(10,11)] Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: Remote SMTP server [127.0.0.1]:25 connected. Nov 28 10:57:35 load-balancer-1-passive Keepalived_healthcheckers[25050]: Using LinkWatch kernel netlink reflector... Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: VRRP_Script(chk_haproxy) succeeded Nov 28 10:57:35 load-balancer-1-passive Keepalived_vrrp[25052]: SMTP alert successfully sent. Nov 28 10:57:38 load-balancer-1-passive Keepalived_vrrp[25052]: VRRP_Instance(VI_1) Transition to MASTER STATE Nov 28 10:57:39 load-balancer-1-passive Keepalived_vrrp[25052]: VRRP_Instance(VI_1) Entering MASTER STATE Nov 28 10:57:39 load-balancer-1-passive Keepalived_vrrp[25052]: Remote SMTP server [127.0.0.1]:25 connected. Nov 28 10:57:39 load-balancer-1-passive Keepalived_vrrp[25052]: SMTP alert successfully sent. 

KeepAliveD MASTER服务器的接口“ip a”：

 [root@load-balancer-1-active keepalived]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000 link/ether bc:76:4e:08:92:38 brd ff:ff:ff:ff:ff:ff 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether bc:76:4e:08:92:27 brd ff:ff:ff:ff:ff:ff inet 10.179.66.95/18 brd 10.179.127.255 scope global eth1 inet6 fe80::be76:4eff:fe08:9227/64 scope link valid_lft forever preferred_lft forever 

KeepAliveD BACKUP服务器的接口，“ip a”：

 [root@load-balancer-1-passive ~]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000 link/ether bc:76:4e:08:4f:b4 brd ff:ff:ff:ff:ff:ff 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether bc:76:4e:08:93:fc brd ff:ff:ff:ff:ff:ff inet 10.179.74.172/18 brd 10.179.127.255 scope global eth1 inet6 fe80::be76:4eff:fe08:93fc/64 scope link valid_lft forever preferred_lft forever 

在MASTER上嗅探

正如下面的“emy”所build议的那样，嗅探数据包以查看健康检查通信是否正在通过，如下所示： http : //www.cyberciti.biz/faq/linux-unix-verify-keepalived-working-or-not/

 [root@mysql-read-lb-1 ~]# tcpdump -vvv -n -i eth1 host 10.179.74.172 tcpdump: listening on eth1, link-type EN10MB (Ethernet), capture size 65535 bytes 

没有 ：（

在备份上嗅探

 [root@load-balancer-1-passive ~]# tcpdump -vvv -n -i eth1 host 10.179.66.95 tcpdump: listening on eth1, link-type EN10MB (Ethernet), capture size 65535 bytes 

没有 ：（