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Update cert creation instruction for Federation 

The Server certificates used for Federation require the node name in the form of `<node>.server.<dc>.<domain>`. Not having this would through `bad tls certificate` error.

* Fixed cert create command
* Added note to create a wildcard cert (like the ones on Kubernetes)
* Fixed numbering
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Ranjandas 2021-03-02 09:39:46 +11:00 committed by GitHub
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6
website/content/docs/k8s/installation/multi-cluster/vms-and-kubernetes.mdx
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@ -31,7 +31,7 @@ kubectl get secrets/consul-ca-cert --template='{{index .data "tls.crt" }}' |
base64 -D > consul-agent-ca.pem base64 -D > consul-agent-ca.pem
``` ```
and the certificate authority signing key: 2. The certificate authority signing key:
```sh ```sh
kubectl get secrets/consul-ca-key --template='{{index .data "tls.key" }}' | kubectl get secrets/consul-ca-key --template='{{index .data "tls.key" }}' |
@ -47,7 +47,7 @@ You can use the `consul tls` commands to generate those certificates:
```sh ```sh
# NOTE: consul-agent-ca.pem and consul-agent-ca-key.pem must be in the current # NOTE: consul-agent-ca.pem and consul-agent-ca-key.pem must be in the current
# directory. # directory.
$ consul tls cert create -server -dc=vm-dc $ consul tls cert create -server -dc=vm-dc -node <node_name>
==> WARNING: Server Certificates grants authority to become a ==> WARNING: Server Certificates grants authority to become a
server and access all state in the cluster including root keys server and access all state in the cluster including root keys
and all ACL tokens. Do not distribute them to production hosts and all ACL tokens. Do not distribute them to production hosts
@ -57,6 +57,8 @@ $ consul tls cert create -server -dc=vm-dc
==> Saved vm-dc-server-consul-0-key.pem ==> Saved vm-dc-server-consul-0-key.pem
``` ```
-> Note the `node` option in the above command. This is a [requirement](https://www.consul.io/docs/connect/gateways/mesh-gateway/wan-federation-via-mesh-gateways#tls) for Consul Federation to work. Alternatively, if you plan to use the same certificate and key pair on all your Consul server nodes, use `-node "*"` instead.
See the help for output of `consul tls cert create -h` to see more options See the help for output of `consul tls cert create -h` to see more options
for generating server certificates. for generating server certificates.