Versions (relevant - OpenSearch/Dashboard/Server OS/Browser): OpenSearch 3.0.0 OpenSearch Dashboard 3.0.0 Debian 12 stable Firefox ESR 128 Installed from official Debian repo. Describe the issue: I am trying to create a 2 nodes cluster. But after I restart the service the cluster only find lo…

I forgot to mention that I am using my selfsigned CA and ssl keypair, I just copied those files to /etc/opensearch and changed their name to the same with original demo certification name. I find these in my log: [2025-06-12T13:29:48,103][INFO ][o.o.t.TransportService ] [node1] publish_address {…

@qpmuvbr According to the above you have not configured nodes_dn section, therefore the nodes do not know which certificates should be treated as node certificates. See example here

[image] qpmuvbr: OpenSearch 3.0.0 OpenSearch Dashboard 3.0.0 Debian 12 stable Firefox ESR 128 Installed from official Debian repo. Describe the issue: I am trying to create a 2 nodes cluster. But after I restart the service the cluster only find local node and the other node is not showing…

[image] Anthony: fore I tried to use full FQDN but still the same

@qpmuvbr How did you create the certificates? Do you have the commands used perhaps? The issue seems to be with the generated certificate. If you have not resolved this yet, I can try locally with the commands you provide and revert back.

Why is there should be nodes_dn? I don’t see docs mention it.

[image] qpmuvbr: I used OPNsense’s GUI created them. I don’t think cert is the problem. It must be either my Opensearch configuration or the bug of Opensearch itself. I used OPNsense’s GUI created them. I don’t think cert is the problem. It must be either my Opensearch configuration or the bu…

@qpmuvbr nodes_dn are mentioned here . It’s a way for a node to know that the communication received with a given certificate is indeed internode communication.

Why can't I create a cluster?

OpenSearch

qpmuvbr June 12, 2025, 6:01pm 2

My diagram without shared file system or VM3. I only have 2 nodes right now.

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Why can't I create a cluster?

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