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Spring Cloud Config Vault Sample

Step 1

Install Vault following the instructions here.

Step 2

Start Vault in dev mode

$ vault server -dev

Make sure you note the root token of your Vault server you will need this later on.

Step 3

Put some data in your Vault

$ vault kv put secret/application foo=bar baz=bam
$ vault kv put secret/myapp foo=myappsbar

Step 4

Start the vault-config-server app.

Make an HTTP request to the config server to see if it can access Vault.

$ curl -X "GET" "http://localhost:8888/myapp/default" -H "X-Config-Token: YourRootToken"

Be sure to replace YourRootToken in the above command with your own Vault root token. You should see the following

HTTP/1.1 200
Content-Type: application/json;charset=UTF-8
Date: Mon, 29 Oct 2018 18:53:20 GMT
Transfer-Encoding: chunked

{
    "label": null,
    "name": "myapp",
    "profiles": [
        "default"
    ],
    "propertySources": [
        {
            "name": "vault:myapp",
            "source": {
                "foo": "myappsbar"
            }
        },
        {
            "name": "vault:application",
            "source": {
                "baz": "bam",
                "foo": "bar"
            }
        }
    ],
    "state": null,
    "version": null
}

Step 5

Open bootstrap.yml in vault-config-client and set your Vault root token in spring.cloud.config.token.

Start vault-config-client. In the logs you should see the following in your logs

2018-10-29 15:10:10.605  INFO 44374 --- [           main] o.s.c.v.VaultConfigClientApplication     : Foo: myappsbar
2018-10-29 15:10:10.605  INFO 44374 --- [           main] o.s.c.v.VaultConfigClientApplication     : Bar: bam