Kafka publish failed with: kafka: client has run out of available brokers to talk to (Is your cluster reachable?)

Dear friends, need your help.
For last couple of days stuck with below error. we are trying to send application logs to kafka, below is the kafka output config. We want to use kerberose auth type. It would be really great if anyone helps me on this issue.
Note: Masked sensitive info
output.kafka:

hosts: ["xxxxxx:port", "xxx:9092", "xx:9092"]
topic: "topic-filebeat-k8s-c88-logging"
kerberos.enabled: true
kerberos.auth_type: keytab
kerberos.username: "xxxxx"
kerberos.keytab: "/usr/share/filebeat/xxxx.keytab"
kerberos.service_name: "kafka"
kerberos.config_path: "/usr/share/filebeat/krb5.conf"
kerberos.realm: "XXX.COM"

errors


Start with the output.kafka configuration shown in the issue, checking broker reachability and the Kafka Kerberos inputs: keytab, krb5.conf, realm, and service name. Use the Beats/Filebeat Kafka output and Kafka client logs to distinguish connectivity from authentication; done means a reproducible cause and a validated configuration or documented blocker.

Written by the indexing model from the issue text.