我正在尝试使用 Solr 6.2.0 和 Zookeeper 3.4.8 创建带有 Vagrant 盒子的 SolrCloud 设置
我设法让它与 Solr 6.1.0 完美配合，但我无法启动更多 Solr 6.2.0 云模式下的一个节点。
我有四台虚拟机连接在 Vagrant 盒子的专用网络上，其中一台运行 Zookeeper，并且 三个 Solr 节点。
第一个 Solr 节点按预期连接到 Zookeeper。我可以访问管理员并查看 那里有云信息。
但是当我尝试连接第二个节点时，出现了问题。
我在 Solr 日志中收到以下错误：
2016-08-30 20:12:12.292 INFO (main) [ ] o.e.j.u.log Logging initialized @490ms
2016-08-30 20:12:12.551 INFO (main) [ ] o.e.j.s.Server jetty-9.3.8.v20160314
2016-08-30 20:12:12.574 INFO (main) [ ] o.e.j.d.p.ScanningAppProvider Deployment monitor
[file:///home/vagrant/solr-6.2.0/server/contexts/] at interval 0
2016-08-30 20:12:12.906 INFO (main) [ ] o.e.j.w.StandardDescriptorProcessor NO JSP Support
for /solr, did not find org.apache.jasper.servlet.JspServlet
2016-08-30 20:12:12.923 WARN (main) [ ] o.e.j.s.SecurityHandler [email protected]@5383967b{/solr,file:///home/vagrant/solr-6.2.0/server/solr-webapp/webapp/,STARTING}{/home/vagrant/solr-6.2.0/server/solr-webapp/webapp}
has uncovered http methods for path: /
2016-08-30 20:12:12.936 INFO (main) [ ] o.a.s.s.SolrDispatchFilter SolrDispatchFilter.init():
WebAppClassLoader=1465085305@57536d79
2016-08-30 20:12:12.962 INFO (main) [ ] o.a.s.c.SolrResourceLoader JNDI not configured
for solr (NoInitialContextEx)
2016-08-30 20:12:12.962 INFO (main) [ ] o.a.s.c.SolrResourceLoader using system property
solr.solr.home: /home/vagrant/solr-6.2.0/server/solr
2016-08-30 20:12:12.963 INFO (main) [ ] o.a.s.c.SolrResourceLoader new SolrResourceLoader
for directory: '/home/vagrant/solr-6.2.0/server/solr'
2016-08-30 20:12:12.963 INFO (main) [ ] o.a.s.c.SolrResourceLoader JNDI not configured
for solr (NoInitialContextEx)
2016-08-30 20:12:12.963 INFO (main) [ ] o.a.s.c.SolrResourceLoader using system property
solr.solr.home: /home/vagrant/solr-6.2.0/server/solr
2016-08-30 20:12:12.987 INFO (main) [ ] o.a.s.c.c.SolrZkClient Using default ZkCredentialsProvider
2016-08-30 20:12:13.017 INFO (main) [ ] o.a.s.c.c.ConnectionManager Waiting for client
to connect to ZooKeeper
2016-08-30 20:12:13.118 INFO (zkCallback-1-thread-1) [ ] o.a.s.c.c.ConnectionManager Watcher
org.apache.solr.common.cloud.ConnectionManager@25b8acce name:ZooKeeperConnection Watcher:172.28.128.3:2181
got event WatchedEvent state:SyncConnected type:None path:null path:null type:None
2016-08-30 20:12:13.119 INFO (main) [ ] o.a.s.c.c.ConnectionManager Client is connected
to ZooKeeper
2016-08-30 20:12:13.119 INFO (main) [ ] o.a.s.c.c.SolrZkClient Using default ZkACLProvider
2016-08-30 20:12:13.130 INFO (main) [ ] o.a.s.s.SolrDispatchFilter Loading solr.xml from
SolrHome (not found in ZooKeeper)
2016-08-30 20:12:13.133 INFO (main) [ ] o.a.s.c.SolrXmlConfig Loading container configuration
from /home/vagrant/solr-6.2.0/server/solr/solr.xml
2016-08-30 20:12:13.233 INFO (main) [ ] o.a.s.c.CorePropertiesLocator Config-defined core
root directory: /home/vagrant/solr-6.2.0/server/solr
2016-08-30 20:12:13.264 INFO (main) [ ] o.a.s.c.CoreContainer New CoreContainer 182259421
2016-08-30 20:12:13.265 INFO (main) [ ] o.a.s.c.CoreContainer Loading cores into CoreContainer
[instanceDir=/home/vagrant/solr-6.2.0/server/solr]
2016-08-30 20:12:13.266 WARN (main) [ ] o.a.s.c.CoreContainer Couldn't add files from /home/vagrant/solr-6.2.0/server/solr/lib
to classpath: /home/vagrant/solr-6.2.0/server/solr/lib
2016-08-30 20:12:13.281 INFO (main) [ ] o.a.s.h.c.HttpShardHandlerFactory created with
socketTimeout : 600000,connTimeout : 60000,maxConnectionsPerHost : 20,maxConnections : 10000,corePoolSize
: 0,maximumPoolSize : 2147483647,maxThreadIdleTime : 5,sizeOfQueue : -1,fairnessPolicy : false,useRetries
: false,connectionsEvictorSleepDelay : 5000,maxConnectionIdleTime : 40000,
2016-08-30 20:12:13.507 INFO (main) [ ] o.a.s.u.UpdateShardHandler Creating UpdateShardHandler
HTTP client with params: socketTimeout=600000&connTimeout=60000&retry=true
2016-08-30 20:12:13.511 INFO (main) [ ] o.a.s.l.LogWatcher SLF4J impl is org.slf4j.impl.Log4jLoggerFactory
2016-08-30 20:12:13.512 INFO (main) [ ] o.a.s.l.LogWatcher Registering Log Listener [Log4j
(org.slf4j.impl.Log4jLoggerFactory)]
2016-08-30 20:12:13.519 INFO (main) [ ] o.a.s.c.ZkContainer Zookeeper client=172.28.128.3:2181
2016-08-30 20:12:13.535 INFO (main) [ ] o.a.s.c.ZkController Added new OnReconnect listener
org.apache.solr.cloud.ZkController$$Lambda$5/306612792@1aa7ecca
2016-08-30 20:12:13.538 INFO (main) [ ] o.a.s.c.c.ConnectionManager Waiting for client
to connect to ZooKeeper
2016-08-30 20:12:13.549 INFO (zkCallback-4-thread-1-processing-n:10.0.2.15:8983_solr) [
] o.a.s.c.c.ConnectionManager Watcher org.apache.solr.common.cloud.ConnectionManager@6ece6797
name:ZooKeeperConnection Watcher:172.28.128.3:2181 got event WatchedEvent state:SyncConnected
type:None path:null path:null type:None
2016-08-30 20:12:13.549 INFO (main) [ ] o.a.s.c.c.ConnectionManager Client is connected
to ZooKeeper
2016-08-30 20:12:13.620 INFO (main) [ ] o.a.s.c.c.ZkStateReader Updating cluster state
from ZooKeeper...
2016-08-30 20:12:13.627 INFO (main) [ ] o.a.s.c.c.ZkStateReader Loaded empty cluster properties
2016-08-30 20:12:13.634 INFO (main) [ ] o.a.s.c.c.ZkStateReader Updated live nodes from
ZooKeeper... (0) -> (1)
2016-08-30 20:12:43.674 ERROR (main) [ ] o.a.s.s.SolrDispatchFilter Could not start Solr.
Check solr/home property and the logs
2016-08-30 20:12:43.741 ERROR (main) [ ] o.a.s.c.SolrCore null:org.apache.solr.common.SolrException:
A previous ephemeral live node still exists. Solr cannot continue. Please ensure that no other
Solr process using the same port is running already.
at org.apache.solr.cloud.ZkController.checkForExistingEphemeralNode(ZkController.java:741)
at org.apache.solr.cloud.ZkController.init(ZkController.java:675)
at org.apache.solr.cloud.ZkController.<init>(ZkController.java:419)
at org.apache.solr.core.ZkContainer.initZooKeeper(ZkContainer.java:112)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:437)
at org.apache.solr.servlet.SolrDispatchFilter.createCoreContainer(SolrDispatchFilter.java:158)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:134)
at org.eclipse.jetty.servlet.FilterHolder.initialize(FilterHolder.java:137)
at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:856)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:348)
at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1379)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1341)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:772)
at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:261)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:517)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.deploy.bindings.StandardStarter.processBinding(StandardStarter.java:41)
at org.eclipse.jetty.deploy.AppLifeCycle.runBindings(AppLifeCycle.java:188)
at org.eclipse.jetty.deploy.DeploymentManager.requestAppGoal(DeploymentManager.java:499)
at org.eclipse.jetty.deploy.DeploymentManager.addApp(DeploymentManager.java:147)
at org.eclipse.jetty.deploy.providers.ScanningAppProvider.fileAdded(ScanningAppProvider.java:180)
at org.eclipse.jetty.deploy.providers.WebAppProvider.fileAdded(WebAppProvider.java:458)
at org.eclipse.jetty.deploy.providers.ScanningAppProvider$1.fileAdded(ScanningAppProvider.java:64)
at org.eclipse.jetty.util.Scanner.reportAddition(Scanner.java:610)
at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:529)
at org.eclipse.jetty.util.Scanner.scan(Scanner.java:392)
at org.eclipse.jetty.util.Scanner.doStart(Scanner.java:313)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.deploy.providers.ScanningAppProvider.doStart(ScanningAppProvider.java:150)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.deploy.DeploymentManager.startAppProvider(DeploymentManager.java:561)
at org.eclipse.jetty.deploy.DeploymentManager.doStart(DeploymentManager.java:236)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
at org.eclipse.jetty.server.Server.start(Server.java:405)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at org.eclipse.jetty.server.Server.doStart(Server.java:372)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1510)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1435)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.jetty.start.Main.invokeMain(Main.java:214)
at org.eclipse.jetty.start.Main.start(Main.java:457)
at org.eclipse.jetty.start.Main.main(Main.java:75)
2016-08-30 20:12:43.744 INFO (main) [ ] o.a.s.s.SolrDispatchFilter SolrDispatchFilter.init()
done
2016-08-30 20:12:43.762 INFO (main) [ ] o.e.j.s.h.ContextHandler Started o.e.j.w.WebAppContext@5383967b{/solr,file:///home/vagrant/solr-6.2.0/server/solr-webapp/webapp/,AVAILABLE}{/home/vagrant/solr-6.2.0/server/solr-webapp/webapp}
2016-08-30 20:12:43.771 INFO (main) [ ] o.e.j.s.ServerConnector Started ServerConnector@305b7c14{HTTP/1.1,[http/1.1]}{0.0.0.0:8983}
2016-08-30 20:12:43.771 INFO (main) [ ] o.e.j.s.Server Started @31972ms
它最终确实启动了，但它无法正常工作，我只是在 Solr 管理中收到错误。
我能找到的错误的唯一参考：
“之前的临时活动节点仍然存在。Solr 无法继续。请确保没有 使用同一端口的其他 Solr 进程已经在运行。”
，这是 Jira 票证，但它表明该问题已在 6.2.0 中解决
https://issues.apache.org/jira/browse/SOLR-8777
还有其他人遇到过这个问题吗？有解决的提示吗？
编辑：在尝试连接第二个节点之前，肯定不存在与 Solr 的现有连接。每个节点都位于完全独立的虚拟机上，因此端口不会发生冲突（无论如何，这都会导致不同的故障）。我什至用
pgrep -f solr在每个节点上启动 solr 时，需要指定主机（-h）参数。
示例：bin/solr start -h MyServerName
如果未指定，此参数默认为“localhost”。当您尝试连接其他 solr 节点（2 和 3）时，zookeeper 会拒绝该连接，因为它认为“localhost”已连接。