Wazuh-Indexer Opensearch to graylog - Host not verified

Can you post :

cat /etc/wazuh-indexer/opensearch.yml | egrep -v “^\s*(#|$)”

#openssl x509 -subject -nameopt RFC2253 -noout -in yourcert.pem (this should be your cert PEM)

Also refer below discussion to fix the issue :