我要设置冗余故障转移Redmine:
- 另一个实例安装在第二台服务器上没有问题
- MySQL(与 Redmine 在同一台机器上运行)配置为主-主复制
因为它们位于不同的子网(192.168.3.x 和 192.168.6.x),所以VIPArip是唯一的选择。
/etc/ha.d/ha.cf
在节点1上
logfacility none
debug 1
debugfile /var/log/ha-debug
logfile /var/log/ha-log
autojoin none
warntime 3
deadtime 6
initdead 60
udpport 694
ucast eth1 node2.ip
keepalive 1
node node1
node node2
crm respawn
/etc/ha.d/ha.cf
在节点2上:
logfacility none
debug 1
debugfile /var/log/ha-debug
logfile /var/log/ha-log
autojoin none
warntime 3
deadtime 6
initdead 60
udpport 694
ucast eth0 node1.ip
keepalive 1
node node1
node node2
crm respawn
crm configure show
:
node $id="6c27077e-d718-4c82-b307-7dccaa027a72" node1
node $id="740d0726-e91d-40ed-9dc0-2368214a1f56" node2
primitive VIPArip ocf:heartbeat:VIPArip \
params ip="192.168.6.8" nic="lo:0" \
op start interval="0" timeout="20s" \
op monitor interval="5s" timeout="20s" depth="0" \
op stop interval="0" timeout="20s" \
meta is-managed="true"
property $id="cib-bootstrap-options" \
stonith-enabled="false" \
dc-version="1.0.12-unknown" \
cluster-infrastructure="Heartbeat" \
last-lrm-refresh="1338870303"
crm_mon -1
:
============
Last updated: Tue Jun 5 18:36:42 2012
Stack: Heartbeat
Current DC: node2 (740d0726-e91d-40ed-9dc0-2368214a1f56) - partition with quorum
Version: 1.0.12-unknown
2 Nodes configured, unknown expected votes
1 Resources configured.
============
Online: [ node1 node2 ]
VIPArip (ocf::heartbeat:VIPArip): Started node1
ip addr show lo
:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet 192.168.6.8/32 scope global lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
我可以从节点 1(192.168.3.x)ping 192.168.6.8:
# ping -c 4 192.168.6.8
PING 192.168.6.8 (192.168.6.8) 56(84) bytes of data.
64 bytes from 192.168.6.8: icmp_seq=1 ttl=64 time=0.062 ms
64 bytes from 192.168.6.8: icmp_seq=2 ttl=64 time=0.046 ms
64 bytes from 192.168.6.8: icmp_seq=3 ttl=64 time=0.059 ms
64 bytes from 192.168.6.8: icmp_seq=4 ttl=64 time=0.071 ms
--- 192.168.6.8 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 0.046/0.059/0.071/0.011 ms
但无法从节点 2 (192.168.6.x) 和外部 ping 虚拟 IP。我是不是漏掉了什么?
PS:如果您得到如下信息,您可能需要IP2UTIL=/sbin/ip
在资源代理脚本中进行设置:/usr/lib/ocf/resource.d/heartbeat/VIPArip
6月5日 11:08:10 node1 lrmd:[19832]:信息:RA输出:(VIPArip:stop:stderr)2012/06/05_11:08:10 错误:无效的OCF_RESK EY_ip [192.168.6.8]
http://www.clusterlabs.org/wiki/Debugging_Resource_Failures
回复@DukeLion:
哪个路由器接收 RIP 更新?
当我启动VIPArip
资源时,ripd 使用以下配置文件运行(在节点 1 上):
/var/run/resource-agents/VIPArip-ripd.conf
:
hostname ripd
password zebra
debug rip events
debug rip packet
debug rip zebra
log file /var/log/quagga/quagga.log
router rip
!nic_tag
no passive-interface lo:0
network lo:0
distribute-list private out lo:0
distribute-list private in lo:0
!metric_tag
redistribute connected metric 3
!ip_tag
access-list private permit 192.168.6.8/32
access-list private deny any
show ip route
:
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, A - Babel,
> - selected route, * - FIB route
K>* 0.0.0.0/0 via 192.168.3.1, eth1
C>* 127.0.0.0/8 is directly connected, lo
K>* 169.254.0.0/16 is directly connected, eth1
C>* 192.168.3.0/24 is directly connected, eth1
C>* 192.168.6.8/32 is directly connected, lo
sh ip rip status
:
Routing Protocol is "rip"
Sending updates every 30 seconds with +/-50%, next due in 7 seconds
Timeout after 180 seconds, garbage collect after 120 seconds
Outgoing update filter list for all interface is not set
lo:0 filtered by private
Incoming update filter list for all interface is not set
lo:0 filtered by private
Default redistribution metric is 1
Redistributing: connected
Default version control: send version 2, receive any version
Interface Send Recv Key-chain
Routing for Networks:
lo:0
Routing Information Sources:
Gateway BadPackets BadRoutes Distance Last Update
Distance: (default is 120)
答案1
我认为问题不在于集群配置,而在于您的路由架构。
VIPArip 资源代理管理本地 quagga 以发送路由更新。但您还需要使用此路由更新来更改路由以指向活动服务器。我将尝试解释它的工作原理。
看图。HA1 和 HA2 是 linux-ha 集群成员,其中 quagga 正在运行。蓝色路由器从两个网络链路监听 RIP。
当 vip 在 HA1 上启动时,quagga 向蓝色路由器发送 RIP 更新。它将 vip 前缀添加到其路由表中,下一跳为 192.168.1.2。
当发生故障转移时,HA1 上的 vip 会关闭,quagga 会完全停止,因此不会发送更新。蓝色路由器将在超时后删除路由表记录,即使 VIP 不会在 HA2 上启动。当 VIP 在 HA2 上启动时,它会启动 quagga 并发送 RIP 更新。蓝色路由器将使用 192.168.2.2 nexthop 将记录添加到路由表。
可以在更复杂的网络拓扑中使用 viparip,只需确保边界路由器在整个网络中获得路由更新。