You can deploy Kafka using DC/IO and it takes care about HA for you. DC/IO is quickly becoming the go-to solution for database deployments. ArangoDB even recommends it as default.
Now about Kafka vs ZeroMQ: you want Kafka if you cannot tolerate the loss of even a single message. The append-only log with committed reader positions is a perfect fit for that.
Now about Kafka vs ZeroMQ: you want Kafka if you cannot tolerate the loss of even a single message. The append-only log with committed reader positions is a perfect fit for that.