20 | Yarn常用命令

1.5 Yarn常用命令
Yarn状态的查询，除了可以在hadoop103:8088页面查看外，还可以通过命令操作。常见的命令操作如下所示：
需求：执行WordCount案例，并用Yarn命令查看任务运行情况。
[atguigu@hadoop102 hadoop-3.1.3]$ myhadoop.sh start

[atguigu@hadoop102 hadoop-3.1.3]$ hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-3.1.3.jar wordcount /input /output
1.5.1 yarn application查看任务
（1）列出所有Application：
[atguigu@hadoop102 hadoop-3.1.3]$ yarn application -list
2021-02-06 10:21:19,238 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Total number of applications (application-types: [], states: [SUBMITTED, ACCEPTED, RUNNING] and tags: []):0
Application-Id Application-Name Application-Type User Queue State Final-State Progress Tracking-URL
（2）根据Application状态过滤：yarn application -list -appStates （所有状态：ALL、NEW、NEW_SAVING、SUBMITTED、ACCEPTED、RUNNING、FINISHED、FAILED、KILLED）
[atguigu@hadoop102 hadoop-3.1.3]$ yarn application -list -appStates FINISHED
2021-02-06 10:22:20,029 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Total number of applications (application-types: [], states: [FINISHED] and tags: []):1
Application-Id Application-Name Application-Type User Queue State Final-State Progress Tracking-URL
application_1612577921195_0001 word count MAPREDUCE atguigu default FINISHED SUCCEEDED 100% http://hadoop102:19888/jobhistory/job/job_1612577921195_0001
（3）Kill掉Application：
[atguigu@hadoop102 hadoop-3.1.3]$ yarn application -kill application_1612577921195_0001
2021-02-06 10:23:48,530 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Application application_1612577921195_0001 has already finished
1.5.2 yarn logs查看日志
（1）查询Application日志：yarn logs -applicationId
[atguigu@hadoop102 hadoop-3.1.3]$ yarn logs -applicationId application_1612577921195_0001
（2）查询Container日志：yarn logs -applicationId -containerId
[atguigu@hadoop102 hadoop-3.1.3]$ yarn logs -applicationId application_1612577921195_0001 -containerId container_1612577921195_0001_01_000001
1.5.3 yarn applicationattempt查看尝试运行的任务
（1）列出所有Application尝试的列表：yarn applicationattempt -list
[atguigu@hadoop102 hadoop-3.1.3]$ yarn applicationattempt -list application_1612577921195_0001
2021-02-06 10:26:54,195 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Total number of application attempts :1
ApplicationAttempt-Id State AM-Container-Id Tracking-URL
appattempt_1612577921195_0001_000001 FINISHED container_1612577921195_0001_01_000001 http://hadoop103:8088/proxy/application_1612577921195_0001/
（2）打印ApplicationAttemp状态：yarn applicationattempt -status
[atguigu@hadoop102 hadoop-3.1.3]$ yarn applicationattempt -status appattempt_1612577921195_0001_000001
2021-02-06 10:27:55,896 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Application Attempt Report :
ApplicationAttempt-Id : appattempt_1612577921195_0001_000001
State : FINISHED
AMContainer : container_1612577921195_0001_01_000001
Tracking-URL : http://hadoop103:8088/proxy/application_1612577921195_0001/
RPC Port : 34756
AM Host : hadoop104
Diagnostics :
1.5.4 yarn container查看容器
（1）列出所有Container：yarn container -list
[atguigu@hadoop102 hadoop-3.1.3]$ yarn container -list appattempt_1612577921195_0001_000001
2021-02-06 10:28:41,396 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Total number of containers :0
Container-Id Start Time Finish Time State Host Node Http Address
（2）打印Container状态： yarn container -status
[atguigu@hadoop102 hadoop-3.1.3]$ yarn container -status container_1612577921195_0001_01_000001
2021-02-06 10:29:58,554 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Container with id ‘container_1612577921195_0001_01_000001’ doesn’t exist in RM or Timeline Server.
注：只有在任务跑的途中才能看到container的状态
1.5.5 yarn node查看节点状态
列出所有节点：yarn node -list -all
[atguigu@hadoop102 hadoop-3.1.3]$ yarn node -list -all
2021-02-06 10:31:36,962 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Total Nodes:3
Node-Id Node-State Node-Http-Address Number-of-Running-Containers
hadoop103:38168 RUNNING hadoop103:8042 0
hadoop102:42012 RUNNING hadoop102:8042 0
hadoop104:39702 RUNNING hadoop104:8042 0
1.5.6 yarn rmadmin更新配置
加载队列配置：yarn rmadmin -refreshQueues
[atguigu@hadoop102 hadoop-3.1.3]$ yarn rmadmin -refreshQueues
2021-02-06 10:32:03,331 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8033
1.5.7 yarn queue查看队列
打印队列信息：yarn queue -status
[atguigu@hadoop102 hadoop-3.1.3]$ yarn queue -status default
2021-02-06 10:32:33,403 INFO client.RMProxy: Connecting to ResourceManager at hadoop103/192.168.10.103:8032
Queue Information :
Queue Name : default
State : RUNNING
Capacity : 100.0%
Current Capacity : .0%
Maximum Capacity : 100.0%
Default Node Label expression : <DEFAULT_PARTITION>
Accessible Node Labels : *
Preemption : disabled
Intra-queue Preemption : disabled