Question

我正在使用Solr 4.6.1设置Solr服务器。

当我启动服务器（sudo /etc/init.d/solr start）时，当我尝试访问Web界面时出现“HTTP ERROR 503”，以及solr.log中的以下错误：

INFO  - 2014-02-25 14:16:44.006; org.apache.solr.core.CorePropertiesLocator; Looking for core definitions underneath /opt/solr/indexes
ERROR - 2014-02-25 14:16:44.032; org.apache.solr.servlet.SolrDispatchFilter; Could not start Solr. Check solr/home property and the logs
ERROR - 2014-02-25 14:16:44.088; org.apache.solr.common.SolrException; null:java.lang.NullPointerException
        at org.apache.solr.core.CorePropertiesLocator.discoverUnder(CorePropertiesLocator.java:121)
        at org.apache.solr.core.CorePropertiesLocator.discoverUnder(CorePropertiesLocator.java:130)
        at org.apache.solr.core.CorePropertiesLocator.discover(CorePropertiesLocator.java:113)
        at org.apache.solr.core.CoreContainer.load(CoreContainer.java:226)
        at org.apache.solr.servlet.SolrDispatchFilter.createCoreContainer(SolrDispatchFilter.java:177)
        at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:127)
        at org.eclipse.jetty.servlet.FilterHolder.doStart(FilterHolder.java:119)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:719)
        at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:265)
        at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1252)
        at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:710)
        at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:494)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.deploy.bindings.StandardStarter.processBinding(StandardStarter.java:39)
        at org.eclipse.jetty.deploy.AppLifeCycle.runBindings(AppLifeCycle.java:186)
        at org.eclipse.jetty.deploy.DeploymentManager.requestAppGoal(DeploymentManager.java:494)
        at org.eclipse.jetty.deploy.DeploymentManager.addApp(DeploymentManager.java:141)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider.fileAdded(ScanningAppProvider.java:145)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider$1.fileAdded(ScanningAppProvider.java:56)
        at org.eclipse.jetty.util.Scanner.reportAddition(Scanner.java:609)
        at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:540)
        at org.eclipse.jetty.util.Scanner.scan(Scanner.java:403)
        at org.eclipse.jetty.util.Scanner.doStart(Scanner.java:337)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider.doStart(ScanningAppProvider.java:121)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.deploy.DeploymentManager.startAppProvider(DeploymentManager.java:555)
        at org.eclipse.jetty.deploy.DeploymentManager.doStart(DeploymentManager.java:230)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.util.component.AggregateLifeCycle.doStart(AggregateLifeCycle.java:81)
        at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:58)
        at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:96)
        at org.eclipse.jetty.server.Server.doStart(Server.java:280)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1259)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1182)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.eclipse.jetty.start.Main.invokeMain(Main.java:473)
        at org.eclipse.jetty.start.Main.start(Main.java:615)
        at org.eclipse.jetty.start.Main.main(Main.java:96)

INFO  - 2014-02-25 14:16:44.098; org.apache.solr.servlet.SolrDispatchFilter; SolrDispatchFilter.init() done
INFO  - 2014-02-25 14:16:44.312; org.eclipse.jetty.server.AbstractConnector; Started SocketConnector@0.0.0.0:8983

当检查进程列表时，solr很好地存在：

/usr/bin/java -Dsolr.solr.home=/opt/solr/current/solr -DcoreRootDirectory=/opt/solr/indexes -Xmx1024m -DsharedLib=/opt/solr/sharedLib -Djetty.logs=/var/log/solr -Djetty.home=/opt/solr/current -Djava.io.tmpdir=/tmp -jar /opt/solr/current/start.jar --daemon

知道可能的原因是什么？

Answer 1

运行以下命令解决了问题：

sudo chown -R solr:solr /opt/solr/indexes/

目录是附加卷（Amazon EBS）的安装点。

在运行命令之前，目录权限如下：

$ sudo ls -al /opt/solr/indexes/
total 24
drwxr-x--- 3 solr solr  4096 Feb 26 09:25 .
drwxr-xr-x 5 solr solr  4096 Feb 26 09:33 ..
drwx------ 2 root root 16384 Feb 26 09:25 lost+found

运行chown命令后：

$ sudo ls -al /opt/solr/indexes/
total 24
drwxr-x--- 3 solr solr  4096 Feb 26 09:25 .
drwxr-xr-x 5 solr solr  4096 Feb 26 09:33 ..
drwx------ 2 solr solr 16384 Feb 26 09:25 lost+found

我能看到的唯一区别是丢失+找到目录的所有者/组，我还在寻找解释

无法启动Solr。检查solr / home属性和日志

1 个答案: