solr cloud切换数据目录

一、背景

solr由于运行了几年时间，数据占用空间大，于是便挂载了一块大的数据盘，并把之前数据目录里的数据拷贝到新挂载目录，启动后发现控制台无法打开，并且报错，报错信息如下截图：

HTTP ERROR 404 javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.
URI:	/solr/
STATUS:	404
MESSAGE:	javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.
SERVLET:	default
CAUSED BY:	javax.servlet.ServletException: javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.
CAUSED BY:	javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.
Caused by:
javax.servlet.ServletException: javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:162)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:516)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:773)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:905)
	at java.lang.Thread.run(Thread.java:748)

　　

二、解决方案

1、设置路径并拷贝数据

找到solr的solr.in.sh配置 文件，一般再安装目录的bin目录下，我的是/opt/solr/bin,修改SOLR_HOME为新数据目录

这里注意一个点拷贝原来数据到新目录时一定要全部拷贝，包括solr.xml 文件 我报错的原因就是没有拷贝solr.xml，其实注释已经说的很清楚了,当时没注意到

# Path to a directory for Solr to store cores and their data. By default, Solr will use server/solr    Solr存储内核及其数据的目录路径。 默认情况下，Solr将使用server/ Solr 
# If solr.xml is not stored in ZooKeeper, this directory needs to contain solr.xml  如果solr.xml不在ZooKeeper中，则需要在该目录下存放solr.xml  

#SOLR_HOME=/opt/solr/data 原来的目录

SOLR_HOME=/data/solr/data  新挂载的目录

　　

2、重启

/etc/init.d/solr restart