Description

I get the following error when I try to create the producer in a .net core 2.1 console application running in a docker linux container.

**An exception of type ‘System.InvalidOperationException’ occurred in Confluent.Kafka.dll but was not handled in user code: ‘No provider for SASL mechanism GSSAPI: recompile librdkafka with libsasl2 or openssl support. Current build options: PLAIN SASL_SCRAM’ Stack trace:

at Confluent.Kafka.Impl.SafeKafkaHandle.Create(RdKafkaType type, IntPtr config) at Confluent.Kafka.Producer…ctor(IEnumerable1 config, Boolean manualPoll, Boolean disableDeliveryReports) at Confluent.Kafka.Producer2…ctor(IEnumerable1 config, ISerializer1 keySerializer, ISerializer`1 valueSerializer, Boolean manualPoll, Boolean disableDeliveryReports)**

How to reproduce

Using Visual studio 2017

1. Create .net core application targeting netcoreapp 2.1
2. Add Confluent.Kafka 0.11.3 nugget package
3. Add docker support to the application
4. Create Kafka producer using the following config:

var config = new Dictionary<string, object> { //set default config { “bootstrap.servers”, edmBrokers}, { “batch.num.messages”, 20 }, { “acks”, “all” }, { “debug”,“all” },

                //SASL:
                { "security.protocol","SASL_SSL" },
                { "sasl.mechanisms", "GSSAPI" },
                { "sasl.kerberos.service.name", "kafka" },
                { "sasl.kerberos.principal","kafka"}
            };

Checklist

Please provide the following information:

• Confluent.Kafka nuget version: 0.11.3
• Apache Kafka version: 1.0.0
• Client configuration:
• Operating system: Debian GNU/Linux 9 (stretch)
• Provide logs (with “debug” : “…” as necessary in configuration)
• Provide broker log excerpts
• Critical issue