Datanode not listening on 9200 - no opensearch

Graylog Central (peer support)
15

I’m setting this up with Ansible → packages are up to date.

Here is the keystore contents:

graylog.p12 
keytool -list -v -keystore /etc/graylog/certs/graylog.p12 -storetype PKCS12

Enter keystore password:  
Keystore type: PKCS12
Keystore provider: SUN

Your keystore contains 1 entry

Alias name: graylog
Creation date: Feb 25, 2025
Entry type: PrivateKeyEntry
Certificate chain length: 1
Certificate[1]:
Owner: CN=<GRAYLOG.FQDN>, O=Us, L=somewhere, C=US
Issuer: CN=<GRAYLOG.FQDN>, O=Us, L=somewhere, C=US
Serial number: <REDACTED>
Valid from: Sun Feb 23 16:57:55 CET 2025 until: Thu Feb 22 16:57:55 CET 2035
Certificate fingerprints:
	 SHA1: <REDACTED>	 SHA256: <REDACTED>
Signature algorithm name: SHA256withRSA
Subject Public Key Algorithm: 4096-bit RSA key
Version: 3

Extensions: 

#1: ObjectId: 2.5.29.19 Criticality=true
BasicConstraints:[
  CA:true
  PathLen: no limit
]

#2: ObjectId: 2.5.29.15 Criticality=true
KeyUsage [
  Key_CertSign
]

#3: ObjectId: 2.5.29.17 Criticality=false
SubjectAlternativeName [
  DNSName: graylog.backend
  IPAddress: 172.28.14.4
]

#4: ObjectId: 2.5.29.14 Criticality=false
SubjectKeyIdentifier [
KeyIdentifier [
0000: <REDACTED>
0010: <REDACTED>
]
]



*******************************************
*******************************************