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我有一个在现有 Red Hat 服务器上运行 JBoss 4.2.2 的网站。我正在设置第二台服务器，以便拥有一个集群对（然后将进行负载平衡）。但是，我无法让它们成功集群。

现有服务器使用以下命令启动 JBoss：

run.sh -c default -b 0.0.0.0

（我知道“默认”配置不支持开箱即用的集群 - 我正在使用它的修改版本，其中包括集群支持。）当我使用相同的命令启动第二个 JBoss 实例时，它会形成自己的集群没有注意到第一个。两者都使用相同的分区名称和多播地址和端口。

我尝试了 McastReceiverTest 和 McastSenderTest 程序来检查机器是否可以通过多播进行通信；他们可以。

然后我注意到http://docs.jboss.org/jbossas/docs/Clustering_Guide/beta422/html/ch07s07s07.html上的信息，说 JGroups 不能绑定到所有接口，而是绑定到默认接口；所以大概它绑定到 127.0.0.1，因此无法让消息通过。因此，我将实例设置为告诉 JGroups 使用内部 IP：

run.sh -c default -b 0.0.0.0 -Djgroups.bind_addr=10.51.1.131
run.sh -c default -b 0.0.0.0 -Djgroups.bind_addr=10.51.1.141

（.131 是现有服务器，.141 是新服务器）。

节点现在相互注意到并形成一个集群 - 首先。但是，在尝试部署 .ear 时，服务器日志显示：

2010-08-07 22:26:39,321 DEBUG [org.jgroups.protocols.FD] sending are-you-alive msg to 10.51.1.131:46294 (own address=10.51.1.141:47629)
2010-08-07 22:26:45,412 WARN  [org.jgroups.protocols.FD] I was suspected by 10.51.1.131:48733; ignoring the SUSPECT message and sending back a HEARTBEAT_ACK
2010-08-07 22:26:49,324 DEBUG [org.jgroups.protocols.FD] sending are-you-alive msg to 10.51.1.131:46294 (own address=10.51.1.141:47629)
2010-08-07 22:26:49,324 DEBUG [org.jgroups.protocols.FD] heartbeat missing from 10.51.1.131:46294 (number=0)
2010-08-07 22:26:49,529 DEBUG [org.jgroups.protocols.MERGE2] initial_mbrs=[[own_addr=10.51.1.141:60365, coord_addr=10.51.1.141:60365, is_server=true]]
2010-08-07 22:26:52,092 WARN  [org.jboss.cache.TreeCache] replication failure with method_call optimisticPrepare; id:18; Args: ( arg[0] = GlobalTransaction:<10.51.1.131:46294>:5421085 ...) exception org.jboss.cache.lock.TimeoutException: failure acquiring lock: fqn=/Yudu_ear,Yudu-ejb_jar,Yudu-ejbPU/com/yudu/ejb/entity, caller=GlobalTransaction:<10.51.1.131:46294>:5421085, lock=read owners=[GlobalTransaction:<10.51.1.131:46294>:5421081] (activeReaders=1, activeWriter=null, waitingReaders=0, waitingWriters=1, waitingUpgrader=0)

...并且 .ear 无法部署。

如果我将 ejb3-entity-cache-service.xml 中的 CacheMode 从 REPL_SYNC 更改为 LOCAL，.ear 会正确部署，尽管实体缓存复制当然不会发生。然而，日志仍然显示出同样问题的有趣迹象。

看起来像：

  • 首先新节点找到现有节点并形成一个集群
  • 然后 FD 检查失败，经过一定次数的故障后，新节点从集群中分离出来并形成自己的集群
  • 然后它再次找到它，重新集群，这次 FD 检查工作。

日志文件的相关位：

2010-08-07 23:47:07,423 INFO  [org.jgroups.protocols.UDP] socket information: local_addr=10.51.1.141:35666, mcast_addr=228.1.2.3:45566, bind_addr=/10.51.1.141, ttl=2 sock: bound to 10.51.1.141:35666, receive buffer size=131071, send buffer size=131071 mcast_recv_sock: bound to 0.0.0.0:45566, send buffer size=131071, receive buffer size=131071 mcast_send_sock: bound to 10.51.1.141:59196, send buffer size=131071, receive buffer size=131071
2010-08-07 23:47:07,431 DEBUG [org.jgroups.protocols.UDP] created unicast receiver thread
2010-08-07 23:47:09,445 DEBUG [org.jgroups.protocols.pbcast.GMS] initial_mbrs are [[own_addr=10.51.1.131:48888, coord_addr=10.51.1.131:48888, is_server=true]]
2010-08-07 23:47:09,446 DEBUG [org.jgroups.protocols.pbcast.GMS] election results: {10.51.1.131:48888=1}
2010-08-07 23:47:09,446 DEBUG [org.jgroups.protocols.pbcast.GMS] sending handleJoin(10.51.1.141:35666) to 10.51.1.131:48888
2010-08-07 23:47:09,751 DEBUG [org.jgroups.protocols.pbcast.GMS] [10.51.1.141:35666]: JoinRsp=[10.51.1.131:48888|61] [10.51.1.131:48888, 10.51.1.141:35666] [size=2]
2010-08-07 23:47:09,752 DEBUG [org.jgroups.protocols.pbcast.GMS] new_view=[10.51.1.131:48888|61] [10.51.1.131:48888, 10.51.1.141:35666]
...
2010-08-07 23:47:10,047 INFO  [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] Number of cluster members: 2
2010-08-07 23:47:10,047 INFO  [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] Other members: 1
...
2010-08-07 23:47:20,034 DEBUG [org.jgroups.protocols.FD] sending are-you-alive msg to 10.51.1.131:48888 (own address=10.51.1.141:35666)
2010-08-07 23:47:30,037 DEBUG [org.jgroups.protocols.FD] sending are-you-alive msg to 10.51.1.131:48888 (own address=10.51.1.141:35666)
2010-08-07 23:47:30,038 DEBUG [org.jgroups.protocols.FD] heartbeat missing from 10.51.1.131:48888 (number=0)
2010-08-07 23:47:40,040 DEBUG [org.jgroups.protocols.FD] sending are-you-alive msg to 10.51.1.131:48888 (own address=10.51.1.141:35666)
2010-08-07 23:47:40,040 DEBUG [org.jgroups.protocols.FD] heartbeat missing from 10.51.1.131:48888 (number=1)
...
2010-08-07 23:48:19,758 WARN  [org.jgroups.protocols.FD] I was suspected by 10.51.1.131:48888; ignoring the SUSPECT message and sending back a HEARTBEAT_ACK
2010-08-07 23:48:20,054 DEBUG [org.jgroups.protocols.FD] sending are-you-alive msg to 10.51.1.131:48888 (own address=10.51.1.141:35666)
2010-08-07 23:48:20,055 DEBUG [org.jgroups.protocols.FD] [10.51.1.141:35666]: received no heartbeat ack from 10.51.1.131:48888 for 6 times (60000 milliseconds), suspecting it
2010-08-07 23:48:20,058 DEBUG [org.jgroups.protocols.FD] broadcasting SUSPECT message [suspected_mbrs=[10.51.1.131:48888]] to group
...
2010-08-07 23:48:21,691 DEBUG [org.jgroups.protocols.pbcast.NAKACK] removing 10.51.1.131:48888 from received_msgs (not member anymore)
2010-08-07 23:48:21,691 INFO  [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] I am (127.0.0.1:1099) received membershipChanged event:
2010-08-07 23:48:21,691 INFO  [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] Dead members: 0 ([])
2010-08-07 23:48:21,691 INFO  [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] New Members : 0 ([])
2010-08-07 23:48:21,691 INFO  [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] All Members : 1 ([127.0.0.1:1099])
...
2010-08-07 23:49:59,793 WARN  [org.jgroups.protocols.FD] I was suspected by 10.51.1.131:48888; ignoring the SUSPECT message and sending back a HEARTBEAT_ACK
2010-08-07 23:50:09,796 WARN  [org.jgroups.protocols.FD] I was suspected by 10.51.1.131:48888; ignoring the SUSPECT message and sending back a HEARTBEAT_ACK
2010-08-07 23:50:19,144 DEBUG [org.jgroups.protocols.FD] Recevied Ack. is invalid (was from: 10.51.1.131:48888),
2010-08-07 23:50:19,144 DEBUG [org.jgroups.protocols.FD] Recevied Ack. is invalid (was from: 10.51.1.131:48888),
...
2010-08-07 23:50:21,791 DEBUG [org.jgroups.protocols.pbcast.GMS] new=[10.51.1.131:48902], suspected=[], leaving=[], new view: [10.51.1.141:35666|63] [10.51.1.141:35666, 10.51.1.131:48902]
...
2010-08-07 23:50:21,792 DEBUG [org.jgroups.protocols.pbcast.GMS] view=[10.51.1.141:35666|63] [10.51.1.141:35666, 10.51.1.131:48902]
2010-08-07 23:50:21,792 DEBUG [org.jgroups.protocols.pbcast.GMS] [local_addr=10.51.1.141:35666] view is [10.51.1.141:35666|63] [10.51.1.141:35666, 10.51.1.131:48902]
2010-08-07 23:50:21,822 INFO  [org.jboss.ha.framework.interfaces.HAPartition.lifecycle.DefaultPartition] New cluster view for partition DefaultPartition (id: 63, delta: 1) : [127.0.0.1:1099, 127.0.0.1:1099]
2010-08-07 23:50:21,822 DEBUG [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] membership changed from 1 to 2
...
2010-08-07 23:50:31,825 DEBUG [org.jgroups.protocols.FD] sending are-you-alive msg to 10.51.1.131:48902 (own address=10.51.1.141:35666)
2010-08-07 23:50:31,832 DEBUG [org.jgroups.protocols.FD] received ack from 10.51.1.131:48902

但是我不明白为什么 FD 检查第一次失败；尽管它最终似乎与另一个节点聚集在一起，但最初的失败似乎足以在它尝试共享实体状态时扰乱部署，从而阻止它以有用的方式实际工作。

如果有人能阐明这一点，我将不胜感激！

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1 回答 1

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我认为在您继续使用 JBoss 4.2.3（这可能是最终的好地方）或构建新配置（我同意@skaffman 关于修剪比添加更容易）之前，您可能想尝试以下操作：

在 10.51.1.131：

run.sh -c default -b 10.51.1.131 -Djgroups.bind_addr=10.51.1.131

在 10.51.1.141：

run.sh -c default -b 10.51.1.141 -Djgroups.bind_addr=10.51.1.141

根据我可以找到的所有文档，-b参数是服务器实例绑定地址，让它们不同可能会给 JGroups 带来一些严重的精神分裂症。我有一个四服务器集群环境成功运行了三年多，这是 RH/JBoss 推荐配置的一部分（我们有支持合同，并得到了 Bela Ban 的帮助）。

于 2010-12-02T02:45:17.893 回答