# Consul Server unable to join Consul Cluster **URL:** \ **Category:** Consul\ **Tags:** k8s, azure\ **Created:** [December 19, 2020, 8:44pm UTC](https://discuss.hashicorp.com/t/consul-server-unable-to-join-consul-cluster/19068 "2020-12-19T20:44:51Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![blake](https://sea2.discourse-cdn.com/hashicorp/user_avatar/discuss.hashicorp.com/blake/32/27620_2.png) [@blake](https://discuss.hashicorp.com/u/blake)\ **Post date:** [December 19, 2020, 11:22pm UTC](https://discuss.hashicorp.com/t/consul-server-unable-to-join-consul-cluster/19068/2 "2020-12-19T23:22:18Z")
Hi @mike-miller-ct, It looks like there might be an issue with networking on that host. As I mentioned over in [Meaning of "Failed to resolve consul-consul-server-0.consul-consul-server.consul.svc" - #3 by mike-miller-ct](https://discuss.hashicorp.com/t/meaning-of-failed-to-resolve-consul-consul-server-0-consul-consul-server-consul-svc/19024/3), it looks like one of the problems is that the node cannot resolve the DNS hostnames for the other Consul servers. Have you tried execing into the pod and executing a few queries to see if you’re manually able to resolve and contact this hostname? Here’s a few commands you can run to test basic connectivity. ```auto $ cat /etc/resolv.conf search consul.svc.cluster.local svc.cluster.local cluster.local nameserver 10.43.0.10 options ndots:5 $ nslookup hashicorp-consul-server-0.hashicorp-consul-server.consul.svc.cluster.local Server: 10.43.0.10 Address: 10.43.0.10:53 Name: hashicorp-consul-server-0.hashicorp-consul-server.consul.svc.cluster.local Address: 10.42.4.75 $ ping -c1 hashicorp-consul-server-0.hashicorp-consul-server.consul.svc PING hashicorp-consul-server-0.hashicorp-consul-server.consul.svc.cluster.local (10.42.4.75) 56(84) bytes of data. 64 bytes from hashicorp-consul-server-0.hashicorp-consul-server.consul.svc.cluster.local (10.42.4.75): icmp_seq=1 ttl=64 time=0.075 ms --- hashicorp-consul-server-0.hashicorp-consul-server.consul.svc.cluster.local ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.075/0.075/0.075/0.000 ms ``` Also, is the IP address you’re specifying in `consul join` the address of another server or client in the environment? --- _[View the full topic](https://discuss.hashicorp.com/t/consul-server-unable-to-join-consul-cluster/19068)._