在配置yarn-HA高可用集群后，执行yarn-start.sh，发现nodemanager启动成功，而resourcemanager却没有启动，于是：
检查logs：
tail -n 100 hadoop-root-resourcemanager-hadoop01.log
发现resourcemanager启动过程中出现这样的报错：
org.apache.hadoop.service.ServiceStateException: org.apache.hadoop.yarn.exceptions.YarnException: Failed to initialize queues
at org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:105)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:173)
at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:109)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceInit(ResourceManager.java:884)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:164)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.createAndInitActiveServices(ResourceManager.java:1296)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceInit(ResourceManager.java:339)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:164)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1584)
Caused by: org.apache.hadoop.yarn.exceptions.YarnException: Failed to initialize queues
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.initializeQueues(CapacityScheduler.java:757)
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.initScheduler(CapacityScheduler.java:342)
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.serviceInit(CapacityScheduler.java:418)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:164)
... 7 more
Caused by: java.lang.IllegalStateException: Queue configuration missing child queue names for root
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerQueueManager.parseQueue(CapacitySchedulerQueueManager.java:234)
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerQueueManager.initializeQueues(CapacitySchedulerQueueManager.java:162)
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.initializeQueues(CapacityScheduler.java:748)
... 10 more
2020-08-16 11:56:56,428 INFO org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: SHUTDOWN_MSG:
分析了一下应该是没有初始化，于是格式化了一下HA在zookeeper中的记录并删除data和logs重新格式化了一下NameNode，再次启动问题依然没有解决。于是将问题定为到yarn的配置文件，报错日志中提及CapacityScheduler：
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.initializeQueues(CapacityScheduler.java:757)
于是到etc/hadoop/下找了一下，发现并没有找到capacity-scheduler.xml，才想起来拷贝集群时使用了NameNode，并没有resourcemanager的配置文件，遂到以前拷贝的集群中翻出resourcemanager节点的capacity-scheduler.xml文件拷贝到hadoop01和hadoop02对应的目录中，重新格式化zookeeper中的HA记录，分别启动start-dfs.sh和start-yarn.sh
成功：
[root@hadoop01 logs]# jpsall
=============== hadoop01 ===============
85060 NameNode
85494 DFSZKFailoverController
85177 DataNode
85771 ResourceManager
79450 QuorumPeerMain
85343 JournalNode
85903 NodeManager
=============== hadoop02 ===============
67841 DataNode
68451 DFSZKFailoverController
62740 QuorumPeerMain
68181 JournalNode
69029 ResourceManager
69224 NodeManager
67643 NameNode
=============== hadoop03 ===============
64498 NameNode
64790 JournalNode
64618 DataNode
65212 NodeManager
60653 QuorumPeerMain
64942 DFSZKFailoverController
查看yarn活跃状态：
[root@hadoop01 logs]# yarn rmadmin -getServiceState rm1
active
再到zk客户端查看yarn：
[zk: localhost:2181(CONNECTED) 0] get -s /yarn-leader-election/cluster-yarn1/ActiveStandbyElectorLock
cluster-yarn1rm1
cZxid = 0x40000002d
ctime = Sun Aug 16 12:25:44 CST 2020
mZxid = 0x40000002d
mtime = Sun Aug 16 12:25:44 CST 2020
pZxid = 0x40000002d
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x300037aefe30005
dataLength = 20
numChildren = 0
来源：oschina
链接：https://my.oschina.net/u/4342268/blog/4503321