Change the ip addresses of NLS cluster

[bennspectrum]

Hello team,

I have a problem here. In the beginning, I installed the 2 nodes NLS cluster, and the ip address were 192.168.0.47 and 192.168.0.48, respectively. Afterwards, I changed the ip addresses to 192.168.0.118 and 192.168.0.119, respectively. Set up the /usr/local/nagioslogserver/var/cluster_hosts to 192.168.0.118, 192.168.0.119.

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I thought everything is OK, but when I input

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curl 'localhost:9200/_cat/master?v'

It's seem to like NLS still consider the master is 192.168.0.48. What's should I do？

By the way, I want to backup my log data but it not working. I guess maybe I solve the problem above the backup function do work normally. Thanks.

[rkennedy]

Just to make sure we're on the same page, could you provide the exact steps you've followed so far? Please post a copy of your /etc/hosts file as it will help as well to see if something is stuck in DNS.

[bennspectrum]

Thanks to your reply, rkennedy.

The steps are shown as following,

1. I installed the 2 nodes NLS cluster on two CentOS machines, and the dhcp ip adrdess of the two CentOS machines are 192.168.0.47 and 192.168.0.48, respectively.

2. I changed the two ip addresses to 192.168.0.118 and 192.168.0.119, and restart the NLS cluster.

3. I found that the two nodes of the NLS cluster could not find each other, so I search the solve method on nagios forum and found out the way below.
https://support.nagios.com/forum/viewto ... er#p185409

the output of

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cat /usr/local/nagioslogserver/var/cluster_hosts

118.PNG

119.PNG

4. I set up the cluster_hosts file and the NLS cluster nodes could find each other. I considered that it was success, but when I input

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curl 'localhost:9200/_cat/master?v'

, the output show the master node ip is 192.168.0.48.

Could someone tell me what configuration do I omission?

[hsmith]

Can you tell me what 'interface URL' says under Administration > General > Global Settings? Also, under Instance Status in the Global Configuration menu can you make sure the IPs are correct?

[bennspectrum]

Thank you!!! hsmith

I change it to http://192.168.0.118, origin is http://192.168.0.47

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Now, it become 127.0.0.1, Is it normal?

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[hsmith]

Not the same thing I see on mine. Is it showing on both nodes as 127.0.0.1 ?

[bennspectrum]

To hsmith,

Yes, both nodes are 127.0.0.1.

[hsmith]

If both nodes think they are the master, you might have a problem. Can I see the output of the previous command on both nodes?

[bennspectrum]

Thank you hsmith,

I am sorry, I already removed them and reinstalled one.

[mcapra]

Were you able to solve your problem? Is it alright if we lock this thread and mark the issue as resolved?