淘淘商城第61讲——搭建Solr集群时，报错：org.apache.solr.common.SolrException: No shard id for CoreDescriptor ···

问题描述

搭建好Solr集群之后，我们就会想着要来启动每一个Tomcat服务器实例。当我使用tail -f /usr/local/solr-cloud/tomcat01/logs/catalina.out命令来查看第一个Tomcat服务器的启动日志时，发现报了一个如下图所示的异常。
在这里插入图片描述
不仅第一个Tomcat服务器的启动日志会显示如上异常，而且其他的Tomcat服务器启动时都会报这个异常，该异常的详细信息如下所示。

java.util.concurrent.ExecutionException: org.apache.solr.common.SolrException: Unable to create core [core1]
    at java.util.concurrent.FutureTask.report(FutureTask.java:122)
    at java.util.concurrent.FutureTask.get(FutureTask.java:192)
    at org.apache.solr.core.CoreContainer.lambda$load$14(CoreContainer.java:671)
    at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.solr.common.SolrException: Unable to create core [core1]
    at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1045)
    at org.apache.solr.core.CoreContainer.lambda$load$13(CoreContainer.java:642)
    at com.codahale.metrics.InstrumentedExecutorService$InstrumentedCallable.call(InstrumentedExecutorService.java:197)
    ... 5 more
Caused by: org.apache.solr.common.SolrException: No shard id for CoreDescriptor[name=core1;instanceDir=/usr/local/solr-cloud/solrhome01/core1]
    at org.apache.solr.cloud.ZkController.checkStateInZk(ZkController.java:1604)
    at org.apache.solr.cloud.ZkController.preRegister(ZkController.java:1546)
    at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1022)
    ... 7 more