sunjiebin opened a new issue #2384:
URL: https://github.com/apache/rocketmq/issues/2384
**BUG REPORT**
1. Please describe the issue you observed:
When i deploy Dledger cluster deployment , i set the dLegerPeers like this
**dLegerPeers=n0-nt-node1:40911;n1-nt-node1:40912;n2-nt-node1:40913**
the _nt-node1_ is my local hostname, I can ping successfully. **but the
cluster start failed.**
### broker-n:*
[root@nt-node1 dledger]# cat broker-n0.conf
```
brokerClusterName = RaftCluster
brokerName=RaftNode00
listenPort=30911
namesrvAddr=127.0.0.1:9876
storePathRootDir=/tmp/rmqstore/node00
storePathCommitLog=/tmp/rmqstore/node00/commitlog
enableDLegerCommitLog=true
dLegerGroup=RaftNode00
dLegerPeers=n0-nt-node1:40911;n1-nt-node1:40912;n2-nt-node1:40913
## must be unique
dLegerSelfId=n0
sendMessageThreadPoolNums=16
```
[root@nt-node1 rocketmq]# cat /etc/hosts
```
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.20.75 nt-node1 nt_node1
```
[root@nt-node1 rocketmq]# ifconfig |grep 192.168.20.75
` inet 192.168.20.75 netmask 255.255.255.0 broadcast 192.168.20.255`
### error logs:
```
java.lang.ArrayIndexOutOfBoundsException: 1
at
io.openmessaging.storage.dledger.DLedgerRpcNettyService.<init>(DLedgerRpcNettyService.java:93)
at
io.openmessaging.storage.dledger.DLedgerServer.<init>(DLedgerServer.java:64)
at
org.apache.rocketmq.store.dledger.DLedgerCommitLog.<init>(DLedgerCommitLog.java:88)
at
org.apache.rocketmq.store.DefaultMessageStore.<init>(DefaultMessageStore.java:129)
at
org.apache.rocketmq.broker.BrokerController.initialize(BrokerController.java:243)
at
org.apache.rocketmq.broker.BrokerStartup.createBrokerController(BrokerStartup.java:222)
at
org.apache.rocketmq.broker.BrokerStartup.main(BrokerStartup.java:58)
```
so I tried to changing the hostname from _nt-node1_ to _nt_node1_, or some
other host name that does not contain "-"
for example:
**dLegerPeers=n0-nt_node1:40911;n1-nt_node1:40912;n2-nt_node1:40913**
**dLegerPeers=n0-localhost:40911;n1-localhost:40912;n2-localhost:40913**
**_the cluster start ok~!_**
In the end, I found that if I didn't have a "-" in the hostname, It would
boot up successfully
2. Please tell us about your environment:
Rocketmq version is 4.7.1
**FEATURE REQUEST**
1. Please describe the feature you are requesting.
I expect the host name including "-" to be supported by the dLegerPeers
parameter
2. Indicate the importance of this issue to you (blocker, must-have,
should-have, nice-to-have). Are you currently using any workarounds to address
this issue?
Because I want deploy the Dledger cluster with k8s statefulset , The pod
name generated by k8s must have - ,and the IP address is dynamic and I can't
fix it , So I must use hostname with "-"
I can fix IP by using hostNetwork of K8S, and then fill in the IP in
dLegerPeers parameter to avoid this bug. However, in this way, Pod is bound to
the host, thus losing flexibility.
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