我正在尝试根据 Keycloak 文档在两个 infinispans 9.4.x 之间设置跨数据中心复制模式，但问题是我试图在经过轻微修改的环境中执行此操作：
- 由于明显的原因，多播在 DC 之间不起作用
- 我必须使用端口 7601，因为 Keycloak JGroups 传输已经在此主机上使用了 7600（是的，通过它的内部 infinispan，我未来的问题是“为什么我需要使用外部额外的 Infinispan 实例而不是在内部 Keycloak 的 Infinispans，但首先要做的是）。
这些是我添加/修改的配置的一部分：
[...]
<replicated-cache-configuration name="sessions-cfg" mode="SYNC" start="EAGER" batching="false">
<backups>
<backup site="site2" failure-policy="FAIL" strategy="SYNC" enabled="true">
<take-offline after-failures="3" min-wait="60000"/>
</backup>
</backups>
<locking acquire-timeout="0"/>
</replicated-cache-configuration>
[...]
<subsystem xmlns="urn:infinispan:server:jgroups:9.4">
<channels default="infinicluster">
<channel name="infinicluster" stack="tcp"/>
<channel name="xsite" stack="tcp"/>
</channels>
<stacks default="${jboss.default.jgroups.stack:udp}">
<stack name="udp">
<transport type="UDP" socket-binding="jgroups-udp"/>
<protocol type="PING"/>
<protocol type="MERGE3"/>
<protocol type="FD_SOCK" socket-binding="jgroups-udp-fd"/>
<protocol type="FD_ALL"/>
<protocol type="VERIFY_SUSPECT"/>
<protocol type="pbcast.NAKACK2"/>
<protocol type="UNICAST3"/>
<protocol type="pbcast.STABLE"/>
<protocol type="pbcast.GMS"/>
<protocol type="UFC_NB"/>
<protocol type="MFC_NB"/>
<protocol type="FRAG3"/>
<relay site="site1">
<remote-site name="site2" channel="xsite"/>
</relay>
</stack>
<stack name="tcp">
<transport type="TCP" socket-binding="jgroups-tcp"/>
<protocol type="TCPPING">
<property name="initial_hosts">
host1.tld[7601],host2.tld[7601]
</property>
<property name="ergonomics">
false
</property>
</protocol>
<protocol type="MERGE3"/>
<protocol type="FD_SOCK" socket-binding="jgroups-tcp-fd"/>
<protocol type="FD_ALL"/>
<protocol type="VERIFY_SUSPECT"/>
<protocol type="pbcast.NAKACK2">
<property name="use_mcast_xmit">
false
</property>
当然，我相应地更改了 JGroups 套接字绑定中的端口号。两个实例似乎都开始正常（只抱怨休息 https 绑定，这似乎是一个小错误），我什至可以在日志中看到实例之间的通信：
2020-05-06 23:28:54,713 INFO [org.infinispan.CLUSTER] (remote-thread--p2-t20)[Context=___hotRodTopologyCache]ISPN100002: Starting rebalance with members [host1.tld, host2.tld], phase READ_OLD_WRITE_ALL, topology id 2
2020-05-06 23:28:54,779 INFO [org.infinispan.CLUSTER] (remote-thread--p2-t2) [Context=___hotRodTopologyCache]ISPN100009: Advancing to rebalance phase READ_ALL_WRITE_ALL, topology id 3
2020-05-06 23:28:54,807 INFO [org.infinispan.CLUSTER] (remote-thread--p2-t21)[Context=___hotRodTopologyCache]ISPN100009: Advancing to rebalance phase READ_NEW_WRITE_ALL, topology id 4
2020-05-06 23:28:54,834 INFO [org.infinispan.CLUSTER] (remote-thread--p2-t4)[Context=___hotRodTopologyCache]ISPN100010: Finished rebalance with members [host1.tld,host2.tld], topology id 5
主要问题是，只要我打开任何实例的 Web 管理页面，我就会在日志中收到错误消息（假设我从site1、host1.tld打开管理页面）：
2020-05-06 23:30:49,057 ERROR [org.jboss.as.controller.management-operation] (External Management Request Threads -- 1) WFLYCTL0013: Operation ("read-attribute") failed - address: ([
("subsystem" => "datagrid-infinispan"),
("cache-container" => "clustered")]): java.lang.IllegalStateException: Site host2.tld not defined in all the cluster members
at org.infinispan.xsite.XSiteAdminOperations.clusterStatus(XSiteAdminOperations.java:78)
at org.infinispan.xsite.GlobalXSiteAdminOperations.globalStatus(GlobalXSiteAdminOperations.java:93)
at org.jboss.as.clustering.infinispan.subsystem.CacheContainerMetricsHandler.filterSitesByStatus(CacheContainerMetricsHandler.java:343)
at org.jboss.as.clustering.infinispan.subsystem.CacheContainerMetricsHandler.executeRuntimeStep(CacheContainerMetricsHandler.java:297)
at org.jboss.as.controller.AbstractRuntimeOnlyHandler$1.execute(AbstractRuntimeOnlyHandler.java:59)
at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:999)
at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:743)
at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:467)
at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1411)
at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:423)
at org.jboss.as.controller.ModelControllerImpl.lambda$execute$1(ModelControllerImpl.java:243)
at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:265)
at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:231)
at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:243)
at org.jboss.as.domain.http.server.DomainApiHandler.handleRequest(DomainApiHandler.java:212)
at io.undertow.server.handlers.encoding.EncodingHandler.handleRequest(EncodingHandler.java:72)
at org.jboss.as.domain.http.server.DomainApiCheckHandler.handleRequest(DomainApiCheckHandler.java:93)
at org.jboss.as.domain.http.server.security.ElytronIdentityHandler.lambda$handleRequest$0(ElytronIdentityHandler.java:62)
at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:289)
at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:246)
at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:254)
at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:225)
at org.jboss.as.domain.http.server.security.ElytronIdentityHandler.handleRequest(ElytronIdentityHandler.java:61)
at io.undertow.server.handlers.BlockingHandler.handleRequest(BlockingHandler.java:56)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1349)
at java.lang.Thread.run(Thread.java:748)
at org.jboss.threads.JBossThread.run(JBossThread.java:485)
如果我从另一个站点打开 Web 管理页面，则会反映错误 - 这次它抱怨host1.tld。很明显我做错了什么，但我不知道到底是什么。如果有人可以帮助我，我会很高兴。