第一步 扩容

1、登录虚拟机管理软件停止服务器之后，将磁盘空间扩容后启动
2、当时建立数据磁盘的时候，就没有将磁盘分区，所以直接可以用以下的方式进行磁盘扩容

  1. # 查看扩容磁盘，
  2. df -h
  4. # 取消挂载磁盘
  5. umount /dev/xvdb
  7. # 磁盘检查
  8. e2fsck -f /dev/xvdb
  10. # 重新识别磁盘
  11. resize2fs  /dev/xvdb
  13. # 重新挂载磁盘
  14. mount -a
  16. # 重启
  17. reboot

第二步 修复nexus3

1、重启完成后，磁盘显示已增加，但是访问nexus3时提示502，意识到nexus3启动失败，于是进一步排查问题

# 查看日志
cat /data/sonatype-work/nexus3/log/nexus.log

# 报错信息如下
2020-12-25 20:46:19,169+0800 ERROR [FelixStartLevel]  *SYSTEM com.orientechnologies.orient.core.storage.impl.local.paginated.OLocalPaginatedStorage - Exception `34B81610` in storage `plocal:/data/sonatype-work/nexus3/db/config`: 2.2.36 (build d3beb772c02098ceaea89779a7afd4b7305d3788, branch 2.2.x)
java.lang.NullPointerException: null
        at com.orientechnologies.orient.core.storage.impl.local.paginated.wal.ODiskWriteAheadLog.cutTill(ODiskWriteAheadLog.java:919)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.makeFullCheckpoint(OAbstractPaginatedStorage.java:3706)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.doClose(OAbstractPaginatedStorage.java:4413)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.close(OAbstractPaginatedStorage.java:581)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:316)
        at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:259)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.connect(DatabaseManagerSupport.java:174)
        at org.sonatype.nexus.orient.DatabaseInstanceImpl.doStart(DatabaseInstanceImpl.java:56)
        at org.sonatype.goodies.lifecycle.LifecycleSupport.start(LifecycleSupport.java:104)
        at org.sonatype.goodies.lifecycle.Lifecycles.start(Lifecycles.java:44)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.createInstance(DatabaseManagerSupport.java:306)
        at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.instance(DatabaseManagerSupport.java:285)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
        at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
        at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
        at java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401)
        at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734)
        at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl.doStart(RestoreServiceImpl.java:76)
        at org.sonatype.nexus.common.stateguard.StateGuardLifecycleSupport.start(StateGuardLifecycleSupport.java:67)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730.CGLIB$start$4(<generated>)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730$$FastClassByGuice$$84b2bfc.invoke(<generated>)
        at com.google.inject.internal.cglib.proxy.$MethodProxy.invokeSuper(MethodProxy.java:228)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:76)
        at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
        at org.sonatype.nexus.common.stateguard.StateGuard$TransitionImpl.run(StateGuard.java:193)
        at org.sonatype.nexus.common.stateguard.TransitionsInterceptor.invoke(TransitionsInterceptor.java:56)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:77)
        at com.google.inject.internal.InterceptorStackCallback.intercept(InterceptorStackCallback.java:55)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730.start(<generated>)
        at org.sonatype.nexus.extender.NexusLifecycleManager.startComponent(NexusLifecycleManager.java:168)
        at org.sonatype.nexus.extender.NexusLifecycleManager.to(NexusLifecycleManager.java:100)
        at org.sonatype.nexus.extender.NexusContextListener.frameworkEvent(NexusContextListener.java:195)
        at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1429)
        at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
        at java.lang.Thread.run(Thread.java:748)
2020-12-25 20:46:19,169+0800 ERROR [FelixStartLevel]  *SYSTEM com.orientechnologies.orient.core.storage.impl.local.paginated.OLocalPaginatedStorage - $ANSI{green {db=config}} Error during storage close
java.lang.NullPointerException: null
        at com.orientechnologies.orient.core.storage.impl.local.paginated.wal.ODiskWriteAheadLog.cutTill(ODiskWriteAheadLog.java:919)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.makeFullCheckpoint(OAbstractPaginatedStorage.java:3706)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.doClose(OAbstractPaginatedStorage.java:4413)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.close(OAbstractPaginatedStorage.java:581)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:316)
        at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:259)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.connect(DatabaseManagerSupport.java:174)
        at org.sonatype.nexus.orient.DatabaseInstanceImpl.doStart(DatabaseInstanceImpl.java:56)
        at org.sonatype.goodies.lifecycle.LifecycleSupport.start(LifecycleSupport.java:104)
        at org.sonatype.goodies.lifecycle.Lifecycles.start(Lifecycles.java:44)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.createInstance(DatabaseManagerSupport.java:306)
        at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.instance(DatabaseManagerSupport.java:285)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
        at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
        at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
        at java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401)
        at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734)
        at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl.doStart(RestoreServiceImpl.java:76)
        at org.sonatype.nexus.common.stateguard.StateGuardLifecycleSupport.start(StateGuardLifecycleSupport.java:67)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730.CGLIB$start$4(<generated>)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730$$FastClassByGuice$$84b2bfc.invoke(<generated>)
        at com.google.inject.internal.cglib.proxy.$MethodProxy.invokeSuper(MethodProxy.java:228)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:76)
        at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
        at org.sonatype.nexus.common.stateguard.StateGuard$TransitionImpl.run(StateGuard.java:193)
        at org.sonatype.nexus.common.stateguard.TransitionsInterceptor.invoke(TransitionsInterceptor.java:56)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:77)
        at com.google.inject.internal.InterceptorStackCallback.intercept(InterceptorStackCallback.java:55)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730.start(<generated>)
        at org.sonatype.nexus.extender.NexusLifecycleManager.startComponent(NexusLifecycleManager.java:168)
        at org.sonatype.nexus.extender.NexusLifecycleManager.to(NexusLifecycleManager.java:100)
        at org.sonatype.nexus.extender.NexusContextListener.frameworkEvent(NexusContextListener.java:195)
        at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1429)
        at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
        at java.lang.Thread.run(Thread.java:748)
2020-12-25 20:46:19,170+0800 ERROR [FelixStartLevel]  *SYSTEM com.orientechnologies.orient.core.storage.impl.local.paginated.OLocalPaginatedStorage - Exception `2FEDAD20` in storage `plocal:/data/sonatype-work/nexus3/db/config`: 2.2.36 (build d3beb772c02098ceaea89779a7afd4b7305d3788, branch 2.2.x)
com.orientechnologies.orient.core.exception.OStorageException: Cannot open local storage '/data/sonatype-work/nexus3/db/config' with mode=rw
        DB name="config"
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:323)
        at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:259)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.connect(DatabaseManagerSupport.java:174)
        at org.sonatype.nexus.orient.DatabaseInstanceImpl.doStart(DatabaseInstanceImpl.java:56)
        at org.sonatype.goodies.lifecycle.LifecycleSupport.start(LifecycleSupport.java:104)
        at org.sonatype.goodies.lifecycle.Lifecycles.start(Lifecycles.java:44)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.createInstance(DatabaseManagerSupport.java:306)
        at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.instance(DatabaseManagerSupport.java:285)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
        at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
        at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
        at java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401)
        at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734)
        at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl.doStart(RestoreServiceImpl.java:76)
        at org.sonatype.nexus.common.stateguard.StateGuardLifecycleSupport.start(StateGuardLifecycleSupport.java:67)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730.CGLIB$start$4(<generated>)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730$$FastClassByGuice$$84b2bfc.invoke(<generated>)
        at com.google.inject.internal.cglib.proxy.$MethodProxy.invokeSuper(MethodProxy.java:228)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:76)
        at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
        at org.sonatype.nexus.common.stateguard.StateGuard$TransitionImpl.run(StateGuard.java:193)
        at org.sonatype.nexus.common.stateguard.TransitionsInterceptor.invoke(TransitionsInterceptor.java:56)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:77)
        at com.google.inject.internal.InterceptorStackCallback.intercept(InterceptorStackCallback.java:55)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730.start(<generated>)
        at org.sonatype.nexus.extender.NexusLifecycleManager.startComponent(NexusLifecycleManager.java:168)
        at org.sonatype.nexus.extender.NexusLifecycleManager.to(NexusLifecycleManager.java:100)
        at org.sonatype.nexus.extender.NexusContextListener.frameworkEvent(NexusContextListener.java:195)
        at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1429)
        at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException: null
        at com.orientechnologies.orient.core.storage.impl.local.paginated.wal.ODiskWriteAheadLog.cutTill(ODiskWriteAheadLog.java:919)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.makeFullCheckpoint(OAbstractPaginatedStorage.java:3706)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.recoverIfNeeded(OAbstractPaginatedStorage.java:3937)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:288)
        ... 39 common frames omitted
2020-12-25 20:46:19,170+0800 ERROR [FelixStartLevel]  *SYSTEM org.sonatype.nexus.orient.DatabaseInstanceImpl - Lifecycle operation start failed
com.orientechnologies.orient.core.exception.OStorageException: Cannot open local storage '/data/sonatype-work/nexus3/db/config' with mode=rw
        DB name="config"
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:323)
        at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:259)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.connect(DatabaseManagerSupport.java:174)
        at org.sonatype.nexus.orient.DatabaseInstanceImpl.doStart(DatabaseInstanceImpl.java:56)
        at org.sonatype.goodies.lifecycle.LifecycleSupport.start(LifecycleSupport.java:104)
        at org.sonatype.goodies.lifecycle.Lifecycles.start(Lifecycles.java:44)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.createInstance(DatabaseManagerSupport.java:306)
        at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.instance(DatabaseManagerSupport.java:285)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
        at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
        at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
        at java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401)
        at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734)
        at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl.doStart(RestoreServiceImpl.java:76)
        at org.sonatype.nexus.common.stateguard.StateGuardLifecycleSupport.start(StateGuardLifecycleSupport.java:67)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730.CGLIB$start$4(<generated>)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730$$FastClassByGuice$$84b2bfc.invoke(<generated>)
        at com.google.inject.internal.cglib.proxy.$MethodProxy.invokeSuper(MethodProxy.java:228)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:76)
        at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
        at org.sonatype.nexus.common.stateguard.StateGuard$TransitionImpl.run(StateGuard.java:193)
        at org.sonatype.nexus.common.stateguard.TransitionsInterceptor.invoke(TransitionsInterceptor.java:56)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:77)
        at com.google.inject.internal.InterceptorStackCallback.intercept(InterceptorStackCallback.java:55)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl$$EnhancerByGuice$$aa785730.start(<generated>)
        at org.sonatype.nexus.extender.NexusLifecycleManager.startComponent(NexusLifecycleManager.java:168)
        at org.sonatype.nexus.extender.NexusLifecycleManager.to(NexusLifecycleManager.java:100)
        at org.sonatype.nexus.extender.NexusContextListener.frameworkEvent(NexusContextListener.java:195)
        at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1429)
        at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException: null
        at com.orientechnologies.orient.core.storage.impl.local.paginated.wal.ODiskWriteAheadLog.cutTill(ODiskWriteAheadLog.java:919)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.makeFullCheckpoint(OAbstractPaginatedStorage.java:3706)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.recoverIfNeeded(OAbstractPaginatedStorage.java:3937)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:288)
        ... 39 common frames omitted
2020-12-25 20:46:19,172+0800 ERROR [FelixStartLevel]  *SYSTEM org.sonatype.nexus.orient.restore.RestoreServiceImpl - Failed transition: NEW -> STARTED
com.orientechnologies.orient.core.exception.OStorageException: Cannot open local storage '/data/sonatype-work/nexus3/db/config' with mode=rw
        DB name="config"
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:323)
        at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:259)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.connect(DatabaseManagerSupport.java:174)
        at org.sonatype.nexus.orient.DatabaseInstanceImpl.doStart(DatabaseInstanceImpl.java:56)
        at org.sonatype.goodies.lifecycle.LifecycleSupport.start(LifecycleSupport.java:104)
        at org.sonatype.goodies.lifecycle.Lifecycles.start(Lifecycles.java:44)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.createInstance(DatabaseManagerSupport.java:306)
        at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.instance(DatabaseManagerSupport.java:285)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
        at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
        at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
        at java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401)
        at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734)
        at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl.doStart(RestoreServiceImpl.java:76)
        at org.sonatype.nexus.common.stateguard.StateGuardLifecycleSupport.start(StateGuardLifecycleSupport.java:67)
        at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
        at org.sonatype.nexus.common.stateguard.StateGuard$TransitionImpl.run(StateGuard.java:193)
        at org.sonatype.nexus.common.stateguard.TransitionsInterceptor.invoke(TransitionsInterceptor.java:56)
        at org.sonatype.nexus.extender.NexusLifecycleManager.startComponent(NexusLifecycleManager.java:168)
        at org.sonatype.nexus.extender.NexusLifecycleManager.to(NexusLifecycleManager.java:100)
        at org.sonatype.nexus.extender.NexusContextListener.frameworkEvent(NexusContextListener.java:195)
        at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1429)
        at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException: null
        at com.orientechnologies.orient.core.storage.impl.local.paginated.wal.ODiskWriteAheadLog.cutTill(ODiskWriteAheadLog.java:919)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.makeFullCheckpoint(OAbstractPaginatedStorage.java:3706)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.recoverIfNeeded(OAbstractPaginatedStorage.java:3937)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:288)
        ... 32 common frames omitted
2020-12-25 20:46:19,172+0800 ERROR [FelixStartLevel]  *SYSTEM org.sonatype.nexus.extender.NexusContextListener - Failed to start nexus
com.orientechnologies.orient.core.exception.OStorageException: Cannot open local storage '/data/sonatype-work/nexus3/db/config' with mode=rw
        DB name="config"
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:323)
        at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:259)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.connect(DatabaseManagerSupport.java:174)
        at org.sonatype.nexus.orient.DatabaseInstanceImpl.doStart(DatabaseInstanceImpl.java:56)
        at org.sonatype.goodies.lifecycle.LifecycleSupport.start(LifecycleSupport.java:104)
        at org.sonatype.goodies.lifecycle.Lifecycles.start(Lifecycles.java:44)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.createInstance(DatabaseManagerSupport.java:306)
        at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
        at org.sonatype.nexus.orient.DatabaseManagerSupport.instance(DatabaseManagerSupport.java:285)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
        at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
        at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
        at java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401)
        at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734)
        at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
        at org.sonatype.nexus.orient.restore.RestoreServiceImpl.doStart(RestoreServiceImpl.java:76)
        at org.sonatype.nexus.common.stateguard.StateGuardLifecycleSupport.start(StateGuardLifecycleSupport.java:67)
        at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
        at org.sonatype.nexus.common.stateguard.StateGuard$TransitionImpl.run(StateGuard.java:193)
        at org.sonatype.nexus.common.stateguard.TransitionsInterceptor.invoke(TransitionsInterceptor.java:56)
        at org.sonatype.nexus.extender.NexusLifecycleManager.startComponent(NexusLifecycleManager.java:168)
        at org.sonatype.nexus.extender.NexusLifecycleManager.to(NexusLifecycleManager.java:100)
        at org.sonatype.nexus.extender.NexusContextListener.frameworkEvent(NexusContextListener.java:195)
        at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1429)
        at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException: null
        at com.orientechnologies.orient.core.storage.impl.local.paginated.wal.ODiskWriteAheadLog.cutTill(ODiskWriteAheadLog.java:919)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.makeFullCheckpoint(OAbstractPaginatedStorage.java:3706)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.recoverIfNeeded(OAbstractPaginatedStorage.java:3937)
        at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:288)
        ... 32 common frames omitted
2020-12-25 20:46:19,176+0800 ERROR [FelixStartLevel]  *SYSTEM java.lang.Throwable - com.orientechnologies.orient.core.exception.OStorageException: Cannot open local storage '/data/sonatype-work/nexus3/db/config' with mode=rw
        DB name="config"

2、百度到有遇到相同情况，DB name不一致，于是尝试修复

# 备份db config
cp -r /data/sonatype-work/nexus3/db/config /data/sonatype-work/nexus3/db/config_bak

# 删除config内所有.wal文件
rm -rf /data/sonatype-work/nexus3/db/config/*.wal

# 登录nexus控制台
sudo java -jar /usr/local/nexus-3.15.2-01/lib/support/nexus-orient-console.jar

# 连接库
CONNECT PLOCAL:/data/sonatype-work/nexus3/db/config admin admin

# 逐行执行如下命令
REBUILD INDEX *
REPAIR DATABASE --fix-graph
REPAIR DATABASE --fix-links
REPAIR DATABASE --fix-ridbags
REPAIR DATABASE --fix-bonsai
DISCONNECT

# 重启nexus

3、重启后继续遇到其他DB name报错，替换重复步骤2

nexus磁盘空间不足导致故障