Consul add remove node

Consul Remove node and add new again

Current State

# consul members
Node         Address              Status  Type    Build  Protocol  DC
consul-tf-0  10.206.249.130:8301  alive   server  0.7.4  2         dc1
consul-tf-1  10.206.249.131:8301  alive   server  0.7.4  2         dc1
consul-tf-2  10.206.249.132:8301  alive   server  0.7.4  2         dc1

Remove one node

# consul leave
Graceful leave complete

# consul members
Error connecting to Consul agent: dial tcp 127.0.0.1:8400: getsockopt: connection refused

# consul members
Node         Address              Status  Type    Build  Protocol  DC
consul-tf-0  10.206.249.130:8301  alive   server  0.7.4  2         dc1
consul-tf-1  10.206.249.131:8301  alive   server  0.7.4  2         dc1
consul-tf-2  10.206.249.132:8301  left    server  0.7.4  2         dc1

Instance group

gcloud compute instance-groups unmanaged list-instances consul-ig
NAME         STATUS
consul-tf-0  RUNNING
consul-tf-1  RUNNING
consul-tf-2  RUNNING

gcloud compute instance-groups unmanaged  remove-instances  consul-ig --instances=consul-tf-2

Updated [https://www.googleapis.com/compute/v1/projects/kohls-ecom-nonprod/zones/us-central1-b/instanceGroups/consul-ig].

gcloud compute instance-groups unmanaged list-instances consul-ig
NAME         STATUS
consul-tf-0  RUNNING
consul-tf-1  RUNNING

Create instance

gcloud compute instances \
create consul-tf-2 \
--tags=consul-tf \
--machine-type=n1-standard-1 \
--zone=us-central1-c \
--subnet=kohl-ecom-nonprod-network01 \
--private-network-ip=10.206.249.132 \
--image=consul-v1 \
--image-project=kohls-ecom-nonprod \
--no-address

gcloud compute instances \
create consul-tf-1 \
--tags=consul-tf \
--machine-type=n1-standard-1 \
--zone=us-central1-f \
--subnet=kohl-ecom-nonprod-network01 \
--private-network-ip=10.206.249.131 \
--image=consul-v1 \
--image-project=kohls-ecom-nonprod \
--no-address

Instance Groups

gcloud compute \
instance-groups unmanaged \
create consul-1-ig --zone us-central1-f

gcloud compute \
instance-groups unmanaged \
create consul-2-ig --zone us-central1-c

gcloud compute \
instance-groups unmanaged \
add-instances consul-1-ig \
--instances \
consul-tf-1 \
--zone us-central1-f

gcloud compute \
instance-groups unmanaged \
add-instances consul-2-ig \
--instances \
consul-tf-2 \
--zone us-central1-c

gcloud compute \
instance-groups set-named-ports consul-1-ig \
--named-ports "consul-8300:8300,consul-8301:8301,consul-8302:8302,consul-8400:8400,consul-8500:8500,consul-8600:8600" \
--zone us-central1-f

gcloud compute \
instance-groups set-named-ports consul-2-ig \
--named-ports "consul-8300:8300,consul-8301:8301,consul-8302:8302,consul-8400:8400,consul-8500:8500,consul-8600:8600" \
--zone us-central1-c

Backend Service

gcloud compute \
backend-services add-backend  consul-backend-service \
    --instance-group consul-1-ig \
    --instance-group-zone us-central1-f \
    --region us-central1

gcloud compute \
backend-services add-backend  consul-backend-service \
    --instance-group consul-2-ig \
    --instance-group-zone us-central1-c \
    --region us-central1