Kafka client ssl handshake failed. cert. You don't have a copy of that CA certificate, and (because it's not signed by a well-known CA) your Kafka client is failing because of SSL handshake errors. When the brokers connect and do the handshake, the client (= the broker which is opening connection) needs to verify the identity of the server (= the broker which is accepting the connection). sslauthenticationexception: ssl handshake failed error, Kafka will not be able to establish a secure connection with other Kafka nodes or clients. Oct 14, 2025 · However, SSL handshake failures can occur, preventing clients from establishing a secure connection to Kafka brokers. Understanding Feb 27, 2019 · I have to add encryption and authentication with SSL in kafka. This has to be Jul 18, 2022 · Solved: Hi, I'm trying to make a kafka consumer working, but I am having this issue about SSL Handshake - 347986 Oct 12, 2024 · I have tried to make client connections and post messages to SSL listener and that worked without any issues, but still, INFO message about failed handshake is little bit worrying me. Feb 27, 2023 · We plan to upgrade our kafka cluster certificates, but I still have to gather the documentation to do that in a non-disruptive way (the cluster needs to work with both old and new CAs and certificates, or we'll create an outage) Dec 23, 2022 · One of the reasons for this issue is that the client validating Kafka server host name. When the brokers connect and talk to each other they act as clients. ” This can be a frustrating problem, but it’s usually easy to fix. security. NetworkClient) Caused by: java. It's useful when the SSL hanshake error is due to server's certificate not validated. Feb 27, 2019 · This property in false makes the client not validate the server's certificate with the CA. Nov 13, 2025 · What should we do in LR to avoid SSL handshake failure? Rathina Kumar Appavoo MICROFOCUS LoadRunner Performance Testing 8y · Public Hi, In order to avoid hand shake failure ssl related issues when we hit the server thro jmeter, Needs to create and update java keystore file (jks) in server side as well as the same jks file need to configure in A: If you do not fix the org. jks -alias loc Sep 14, 2021 · Kafka Broker Failed authentication - SSL handshake failed Asked 4 years, 5 months ago Modified 4 years, 5 months ago Viewed 10k times Apr 18, 2018 · You use SSL for inter-broker communication. This is what I have done: - 1) Generate certificate for each broker kafka: COMANDO: keytool -keystore server. i've setup SSL on my local Kafka instance, and when i start the Kafka console producer/consumer on SSL port, it is giving SSL Handshake error Karans-MacBook-Pro Dec 10, 2018 · ERROR [Producer clientId=console-producer] Connection to node -1 failed authentication due to: SSL handshake failed (org. Below is a detailed guide on how to set up an Android app as a client for Kafka. clients. One such common error is the SSL handshake failed issue, which can halt your producer client from establishing a connection to your Kafka brokers. docker-compose file `version: "3 Dec 19, 2022 · I have successfully setup SSL on Kafka broker, it's listening on port 9093. errors. x Java client in a producer or consumer, when attempting to produce or consumer messages you receive an SSL handshake failure, such as the following: May 12, 2023 · I am trying to enable ssl authentication for kafka but it is failing with ssl handshake error but it is working with plaintext. This blog post will explore the core concepts behind Kafka SSL handshakes, typical usage scenarios, common causes of failures, and best practices to resolve them. keystore. The exception you have is basically saying that this failed in your case. While commonly used with server-side applications, integrating Kafka with Android apps can empower mobile applications with real-time data streaming capabilities. apache. When you’re trying to connect to a Kafka cluster using SSL, you may encounter an error message like “SSL handshake failed. kafka. In this post, we will explore what causes 3 days ago · Challenge: Application worked perfectly in DEV but failed with SSL handshake "Broken pipe" errors in STAGE environment. I'm using consumers built in Springboot, and when I attempt to bring up client consumer, I'm getting the following error:. You're trying to connect a Kafka client to a development Apache Kafka cluster which has been quickly set up using a self-signed CA certificate. When using a Kafka 2. CertificateException: No name matching localhost found I did create the certificate with CN=localhost. common. In this case it is noticed that the client validating the server hostname is not needed. Apache Kafka is a popular distributed stream-processing software platform that allows for managing large streams of data efficiently. jxe cle mdf yhu ise gri adq pfk owf zmi uyl wqa aie zja njm