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List Connectors

There is a lot of information when it comes to Connectors!

  • Instance / Name: instance is only displayed if you have multiple Kafka Connect instances configured, this is to distinguish between them.
  • Class: the plugin used.
  • Type: quickly understand what this connector does.
  • Topics: which topics does the connector listen from or write into.
  • Status / Tasks: red means trouble!

Here is a typical example with 6 Kafka Connect instances for multiple environments:

Error Management

Conduktor displays the connectors on the main list in error (clearly in red). In the details, it's possible to look at which task failed and why:

Restart / Pause / Stop

It's possible to restart a Connector or simply a task (or all tasks at once, different of a full connector restart).

  • Restart a Connector
  • Pause/Resume a Connector
  • Restart ALL the tasks of a Connector
  • Restart a particular task of a Connector

Connector States

A connector and its tasks can have different states:

  • UNASSIGNED: no worker is picking it up!

Reset Connector Source Offsets

Kafka Connect stores connectors state inside Kafka itself.

Sometimes (mostly when testing), you want to reset a connector to start from "scratch", as it was the first time ever you've started it. Unfortunately, removing a Connector does not delete its state from Kafka. You can either:

  • change the Connector name: Kafka Connect won't find any existing state obviously
  • reset the source offsets: using Conduktor!

Conduktor will look for the partition containing the latest occurrence of your connector configuration, to know "where" to reset it.

Here is an example:

  • my connector name: "my-connector" which is already stopped (ie: removed)
  • my Kafka Connect offsets topic: "docker-connect-offsets"
  • Click Lookup and let Conduktor find the partition and latest value
  • Select the key and "RESET SOURCE OFFSETS"
  • Restart your Connector (re-create it), it will start from scratch.

Create Connectors

We provide a wizard to easily create connectors. The available connector types depend on the Kafka Connect instance you're creating a connector. You can also simply load a JSON to init the wizard:

When you pick a Sink or a Source connector type (or Create From JSON), you have access to a nice wizard properly organized and fully documented (just hover the property names).

For instance, here, one of the step of the Elasticsearch Sink Connector:

Update Connector

It's possible to update a Connector by using this same wizard or simply by providing an updated JSON.