LittleBoy18 opened a new issue #57:
URL: https://github.com/apache/rocketmq-exporter/issues/57
**Describe the bug**
ERROR Servlet.service() for servlet [dispatcherServlet] in context with path
[] threw exception [Request processing failed; nested exception is
java.lang.NullPointerException] with root cause
**To Reproduce**
1、my rocketmq cluster:
[root@iZuf656r3kyeyoiwpox5naZ ~]# kubectl get po -owide |grep rocketmq-im
rocketmq-rocketmq-im-broker-0-0 1/1
Running 0 19h 100.64.33.112 izuf615h19nemtvcuth6i1z
<none> <none>
rocketmq-rocketmq-im-broker-0-1 1/1
Running 0 10d 100.64.96.104 izuf6h2l856zkil30nj0jvz
<none> <none>
rocketmq-rocketmq-im-broker-1-0 1/1
Running 0 19h 100.64.171.150 izuf6auntvsw7izt7fuj49z
<none> <none>
rocketmq-rocketmq-im-broker-1-1 1/1
Running 0 19h 100.64.81.124 izuf60i0j5b3hllnuvtlg2z
<none> <none>
rocketmq-rocketmq-im-exporter-0 1/1
Running 0 8d 100.64.140.119 izuf68qwbr71d4x3noker8z
<none> <none>
rocketmq-rocketmq-imnamesrv-0 1/1
Running 0 28d 100.64.33.76 izuf615h19nemtvcuth6i1z
<none> <none>
rocketmq-rocketmq-imnamesrv-1 1/1
Running 1 28d 100.64.232.143 izuf6dftvdiba6ltbf9qeqz
<none> <none>
2、exporter service:
[root@iZuf656r3kyeyoiwpox5naZ ~]# kubectl get svc |grep rocketmq-im-exporter
rocketmq-rocketmq-im-exporter ClusterIP None
<none> 5557/TCP 28d
3、use metrics interface:
curl 100.64.140.119:5557/metrics
{"timestamp":"2021-05-20T03:05:48.494+0000","status":500,"error":"Internal
Server Error","message":"No message available","path":"/metrics"}
4、exporter log:
[2021-05-20 10:55:22.086] ERROR Servlet.service() for servlet
[dispatcherServlet] in context with path [] threw exception [Request processing
failed; nested exception is java.lang.NullPointerException] with root cause
**Expected behavior**
A clear and concise description of what you expected to happen.
**Screenshots**
If applicable, add screenshots to help explain your problem.
**Desktop (please complete the following information):**
- OS: [e.g. iOS]
- Browser [e.g. chrome, safari]
- Version [e.g. 22]
**Smartphone (please complete the following information):**
- Device: [e.g. iPhone6]
- OS: [e.g. iOS8.1]
- Browser [e.g. stock browser, safari]
- Version [e.g. 22]
**Additional context**
rocketmq cluster is health,there is no more detailed log in the rocketmq
exporter.
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