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Merged
ZQKC merged 3 commits into from
Jun 29, 2023
Merged

Update faq.md #1004

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8aba6e0
Update faq.md
HwiLu Apr 23, 2023
b4d1004
Merge branch 'master' into patch-1
ZQKC Jun 29, 2023
f888150
补充跳转链接
ZQKC Jun 29, 2023
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28 changes: 26 additions & 2 deletions docs/user_guide/faq.md
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@
- [14、对接Ldap的配置](#14对接ldap的配置)
- [15、测试时使用Testcontainers的说明](#15测试时使用testcontainers的说明)
- [16、JMX连接失败怎么办](#16jmx连接失败怎么办)

- [17、zk监控无数据问题](#17zk监控无数据问题)

## 1、支持哪些 Kafka 版本？

Expand Down Expand Up @@ -253,4 +253,28 @@ spring:

## 16、JMX连接失败怎么办

详细见：[解决连接JMX失败](../dev_guide/%E8%A7%A3%E5%86%B3%E8%BF%9E%E6%8E%A5JMX%E5%A4%B1%E8%B4%A5.md)
详细见：[解决连接JMX失败](../dev_guide/%E8%A7%A3%E5%86%B3%E8%BF%9E%E6%8E%A5JMX%E5%A4%B1%E8%B4%A5.md)


## 17、zk监控无数据问题

**现象：**
zookeeper集群正常，但Ks上zk页面所有监控指标无数据，`KnowStreaming` log_error.log日志提示

```vim
[MetricCollect-Shard-0-8-thread-1] ERROR class=c.x.k.s.k.c.s.h.c.z.HealthCheckZookeeperService||method=checkWatchCount||param=ZookeeperParam(zkAddressList=[Tuple{v1=192.168.xxx.xx, v2=2181}, Tuple{v1=192.168.xxx.xx, v2=2181}, Tuple{v1=192.168.xxx.xx, v2=2181}], zkConfig=null)||config=HealthAmountRatioConfig(amount=100000, ratio=0.8)||result=Result{message='mntr is not executed because it is not in the whitelist.
', code=8031, data=null}||errMsg=get metrics failed, may be collect failed or zk mntr command not in whitelist.
2023-04-23 14:39:07.234 [MetricCollect-Shard-0-8-thread-1] ERROR class=c.x.k.s.k.c.s.h.checker.AbstractHeal
```


原因就很明确了。需要开放zk的四字命令，在`zoo.cfg`配置文件中添加
```
4lw.commands.whitelist=mntr,stat,ruok,envi,srvr,envi,cons,conf,wchs,wchp
```


建议至少开放上述几个四字命令，当然，您也可以全部开放
```
4lw.commands.whitelist=*
```