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MCS service account authentication with Mkube (#166)

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`MCS` will authenticate against `Mkube`using bearer tokens via HTTP
`Authorization` header. The user will provide this token once
in the login form, MCS will validate it against Mkube (list tenants) and
if valid will generate and return a new MCS sessions
with encrypted claims (the user Service account token will be inside the
JWT in the data field)

Kubernetes

The provided `JWT token` corresponds to the `Kubernetes service account`
that `Mkube` will use to run tasks on behalf of the
user, ie: list, create, edit, delete tenants, storage class, etc.

Development

If you are running mcs in your local environment and wish to make
request to `Mkube` you can set `MCS_M3_HOSTNAME`, if
the environment variable is not present by default `MCS` will use
`"http://m3:8787"`, additionally you will need to set the
`MCS_MKUBE_ADMIN_ONLY=on` variable to make MCS display the Mkube UI

Extract the Service account token and use it with MCS

For local development you can use the jwt associated to the `m3-sa`
service account, you can get the token running
the following command in your terminal:

```
kubectl get secret $(kubectl get serviceaccount m3-sa -o
jsonpath="{.secrets[0].name}") -o jsonpath="{.data.token}" | base64
--decode
```

Then run the mcs server

```
MCS_M3_HOSTNAME=http://localhost:8787 MCS_MKUBE_ADMIN_ONLY=on ./mcs
server
```

Self-signed certificates and Custom certificate authority for Mkube

If Mkube uses TLS with a self-signed certificate, or a certificate
issued by a custom certificate authority you can add those
certificates usinng the `MCS_M3_SERVER_TLS_CA_CERTIFICATE` env variable

````
MCS_M3_SERVER_TLS_CA_CERTIFICATE=cert1.pem,cert2.pem,cert3.pem ./mcs
server
````
This commit is contained in:
Lenin Alevski
2020-06-23 11:37:46 -07:00
committed by GitHub
parent 1aec2d879e
commit 1e7f272a67
36 changed files with 1532 additions and 387 deletions
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4
restapi/tls.go
View File

@@ -60,7 +60,7 @@ func prepareSTSClientTransport() *http.Transport {
// Can't use TLSv1.1 because of RC4 cipher usage
MinVersion: tls.VersionTLS12,
}
// If root CAs are configured we save them to the http.Client RootCAs store
// If CAs certificates are configured we save them to the http.Client RootCAs store
if len(caCertFileNames) > 0 {
certs := x509.NewCertPool()
for _, caCert := range caCertFileNames {
@@ -85,7 +85,7 @@ func prepareSTSClientTransport() *http.Transport {
}
// PrepareSTSClient returns an http.Client with custom configurations need it by *credentials.STSAssumeRole
// custom configurations include skipVerification flag, and root CA certificates
// custom configurations include the use of CA certificates
func PrepareSTSClient() *http.Client {
transport := prepareSTSClientTransport()
// Return http client with default configuration