smolnar82 opened a new pull request #503:
URL: https://github.com/apache/knox/pull/503
## What changes were proposed in this pull request?
The `HadoopAuthFilter` is now able to lookup aliases in the `__gateway`
credential store too.
## How was this patch tested?
Added a new unit test and ran them all.
Additionally, I executed manual testing:
1. saved an alias on the gateway level called `kerberos.keytab` pointing to
a non-existing keytab path
```
$ bin/knoxcli.sh create-alias kerberos.keytab --value /tmp/knox.keytab
kerberos.keytab has been successfully created .
$ bin/knoxcli.sh list-alias
Listing aliases for: __gateway
kerberos.keytab
knox.token.hash.key
2 items.
```
2. created a new provider/descriptor pair:
```
$ cat conf/shared-providers/kerberos-providers.json
{
"providers": [
{
"role": "authentication",
"name": "HadoopAuth",
"enabled": "true",
"params": {
"config.prefix": "hadoop.auth.config",
"hadoop.auth.config.type": "kerberos",
"hadoop.auth.config.signature.secret":
"${ALIAS=AUTH_CONFIG_SIGNATURE_SECRET}",
"hadoop.auth.config.simple.anonymous.allowed": "false",
"hadoop.auth.config.token.validity": "1800",
"hadoop.auth.config.cookie.path": "/",
"hadoop.auth.config.kerberos.principal": "knox",
"hadoop.auth.config.kerberos.keytab": "${ALIAS=kerberos.keytab}",
"hadoop.auth.config.kerberos.name.rules": "DEFAULT"
}
},
{
"role": "identity-assertion",
"name": "HadoopGroupProvider",
"enabled": "true",
"params": {
"CENTRAL_GROUP_CONFIG_PREFIX": "gateway.group.config."
}
}
]
}
$ cat conf/descriptors/myKerberosBasedTopology.json
{
"provider-config-ref": "kerberos-providers",
"services": [
{
"name": "KNOXTOKEN",
"params": {
"knox.token.ttl": "36000"
}
}
]
}
```
3. Issued a `curl` command to get a Knox token using my newly created
`myKerberosBasedTopology`:
```
$ curl -s -u: -k
"https://localhost:8443/gateway/myKerberosBasedTopology/knoxtoken/api/v1/token";
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>Error 500 javax.servlet.ServletException:
javax.servlet.ServletException: javax.servlet.ServletException:
javax.servlet.ServletException: Keytab does not exist: /tmp/knox.keytab</title>
</head>
<body><h2>HTTP ERROR 500 javax.servlet.ServletException:
javax.servlet.ServletException: javax.servlet.ServletException:
javax.servlet.ServletException: Keytab does not exist: /tmp/knox.keytab</h2>
<table>
<tr><th>URI:</th><td>/gateway/myKerberosBasedTopology/knoxtoken/api/v1/token</td></tr>
<tr><th>STATUS:</th><td>500</td></tr>
<tr><th>MESSAGE:</th><td>javax.servlet.ServletException:
javax.servlet.ServletException: javax.servlet.ServletException:
javax.servlet.ServletException: Keytab does not exist:
/tmp/knox.keytab</td></tr>
<tr><th>SERVLET:</th><td>myKerberosBasedTopology-knox-gateway-servlet</td></tr>
<tr><th>CAUSED BY:</th><td>javax.servlet.ServletException:
javax.servlet.ServletException: javax.servlet.ServletException:
javax.servlet.ServletException: Keytab does not exist:
/tmp/knox.keytab</td></tr>
<tr><th>CAUSED BY:</th><td>javax.servlet.ServletException:
javax.servlet.ServletException: javax.servlet.ServletException: Keytab does not
exist: /tmp/knox.keytab</td></tr>
<tr><th>CAUSED BY:</th><td>javax.servlet.ServletException:
javax.servlet.ServletException: Keytab does not exist:
/tmp/knox.keytab</td></tr>
<tr><th>CAUSED BY:</th><td>javax.servlet.ServletException: Keytab does not
exist: /tmp/knox.keytab</td></tr>
</table>
</body>
</html>
```
As you can see, the alias was resolved properly to `/tmp/knox.keytab`
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