Question 1

What does Consul do and how is it different from Kubernetes?

Accepted Answer

Consul provides service discovery, configuration, and networking. Kubernetes orchestrates containers. They're complementary; Consul can run on or outside Kubernetes.

Question 2

What are the main Consul use cases?

Accepted Answer

Service discovery (finding and connecting services), health checking (detecting failures), configuration management, and network automation (routing rules).

Question 3

How does Consul service discovery work?

Accepted Answer

Services register with Consul (via agent), Consul maintains a catalog, clients query the catalog to discover service locations dynamically.

Question 4

What is Envoy and how does it relate to Consul?

Accepted Answer

Envoy is a proxy that routes traffic between services. Consul configures Envoy proxies; together they form the service mesh data plane.

Question 5

How do I handle Consul in multi-datacenter setups?

Accepted Answer

Consul supports federation and replication across datacenters. Plan for eventual consistency and network partitions.

Question 6

What are common Consul deployment patterns?

Accepted Answer

Server-agent model (servers maintain state, agents report to servers), server clustering (3-5 servers for production), and agent co-location (agent per node).

Question 7

How do I monitor and troubleshoot Consul?

Accepted Answer

Use Prometheus for metrics, Consul HTTP API for queries, Consul UI for visualization, and logs for debugging. Monitor cluster health closely.

प्रदेश	ज्युनियर	मध्यम	सीनियर
USA	$110k	$180k	$280k
UK	£85k	£138k	£215k
EU	€95k	€155k	€240k
CANADA	C$135k	C$220k	C$340k

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