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Merge pull request #9838 from Ranjandas/master 

Fix TLS cert creation instruction for Consul federation
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Ranjandas 2021-03-03 19:34:30 +11:00 committed by GitHub
parent 3e882dde12 851a1b123d
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10
website/content/docs/k8s/installation/multi-cluster/vms-and-kubernetes.mdx
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@ -24,14 +24,14 @@ If your primary datacenter is running on Kubernetes, use the Helm config from th
Once installed, and with the `ProxyDefaults` [resource created](/docs/k8s/installation/multi-cluster/kubernetes#proxydefaults),
you'll need to export the following information from the primary Kubernetes cluster:
1. The certificate authority cert:
* The certificate authority cert:
```sh
kubectl get secrets/consul-ca-cert --template='{{index .data "tls.crt" }}' |
base64 -D > consul-agent-ca.pem
```
and the certificate authority signing key:
* The certificate authority signing key:
```sh
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
# NOTE: consul-agent-ca.pem and consul-agent-ca-key.pem must be in the current
# 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
server and access all state in the cluster including root keys
and all ACL tokens. Do not distribute them to production hosts
@ -57,6 +57,10 @@ $ consul tls cert create -server -dc=vm-dc
==> Saved vm-dc-server-consul-0-key.pem
```
-> Note the `-node` option in the above command. This should be same as the node name of the [Consul Agent](https://www.consul.io/docs/agent#running-an-agent). 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, or you don't know the nodename in advance, use `-node "*"` instead.
Not satisfying this requirement would result in the following error in the Consul Server logs:
`[ERROR] agent.server.rpc: TLS handshake failed: conn=from= error="remote error: tls: bad certificate"`
See the help for output of `consul tls cert create -h` to see more options
for generating server certificates.