Add a krb5 config file to run the tests locally (#14251)

kafka_consumer/tests/conftest.py

@@ -11,6 +11,7 @@
 
 from datadog_checks.dev import TempDir, WaitFor, docker_run
 from datadog_checks.dev._env import e2e_testing
+from datadog_checks.dev.ci import running_on_ci
 from datadog_checks.kafka_consumer import KafkaCheck
 
 from .common import (
@@ -122,7 +123,9 @@ def dd_environment():
             DOCKER_IMAGE_PATH,
             conditions=conditions,
             env_vars={
-                "KRB5_CONFIG": f"{HERE}/docker/kerberos/kdc/krb5_agent.conf",
+                "KRB5_CONFIG": f"{HERE}/docker/kerberos/kdc/krb5_agent.conf"
+                if running_on_ci()
+                else f"{HERE}/docker/kerberos/kdc/krb5_local.conf",
                 "SECRET_DIR": secret_dir,
             },
             build=True,

kafka_consumer/tests/docker/kerberos/kdc/krb5_local.conf

@@ -0,0 +1,20 @@
+# This is a separate file since kdc = localhost:88 is necessary to access the kdc from the Agent container
+[libdefaults]
+default_realm = TEST.CONFLUENT.IO
+forwardable = true
+rdns = false
+dns_lookup_kdc   = yes
+dns_lookup_realm = yes
+
+[realms]
+TEST.CONFLUENT.IO = {
+      kdc            = tcp/localhost:88
+      admin_server   = tcp/localhost:749
+      default_domain = test.confluent.io
+      kpasswd_port = 464
+}
+
+[logging]
+kdc = FILE:/var/log/kerberos/krb5kdc.log
+admin_server = FILE:/var/log/kerberos/kadmin.log
+default = FILE:/var/log/kerberos/krb5lib.log