Ok, I'm running out of ideas to debug the issue.
No logs like Bosco posted before, and I cannot find a reason for this not
to work, when the endpoint is accessible and is correctly set in
install.properties.

On Fri, 11 Jan 2019 at 15:42, Odon Copon <odonco...@gmail.com> wrote:

> Thanks Bosco, that's really helpful.
> Ran the following search "grep -irnw '/' -e 'AuditProviderFactory'
> --exclude \*.java --exclude \*.class --exclude \*.jar 2>/dev/null" trying
> to look for "AuditProviderFactory" keyword, but there's nothing with that
> word in it (exluding java, class and jar files). So no log files like yours.
> What could be causing this? I'm restarting the namenode executing the
> following command: "sudo /etc/init.d/hadoop-namenode restart", is this
> enough or is there any other internal component that needs to be restarted
> as well? like the nodemanager per example.
>
> On Fri, 11 Jan 2019 at 15:34, Don Bosco Durai <bo...@apache.org> wrote:
>
>> You might want to look into the logs. Here are some of mine from the HDFS
>> namenode log ..
>>
>>
>>
>> 2019-01-10 06:52:22,128 INFO  provider.AuditProviderFactory
>> (AuditProviderFactory.java:init(150)) - AUDIT PROPERTY:
>> ranger.plugin.hdfs.policy.rest.url=http://orange1.mydomain.com:6080
>>
>>
>>
>> 2019-01-10 06:52:22,200 INFO  service.RangerBasePlugin
>> (RangerBasePlugin.java:init(151)) - PolicyEngineOptions: { evaluatorType:
>> auto, cacheAuditResult: true, disableContextEnrichers: false,
>> disableCustomConditions: false, disableTrieLookupPrefilter: false }
>>
>> 2019-01-10 06:52:23,274 INFO  util.PolicyRefresher
>> (PolicyRefresher.java:loadPolicyfromPolicyAdmin(277)) -
>> PolicyRefresher(serviceName=orange_hadoop): found updated version.
>> lastKnownVersion=-1; newVersion=3
>>
>> 2019-01-10 06:52:23,337 INFO  util.RangerResourceTrie
>> (RangerResourceTrie.java:<init>(112)) - resourceName=path;
>> optIgnoreCase=false; optWildcard=true; wildcardChars=*?{}\; nodeCount=18;
>> leafNodeCount=1; singleChildNodeCount=17; maxDepth=18;
>> evaluatorListCount=0; wildcardEvaluatorListCount=2;
>> evaluatorListRefCount=17; wildcardEvaluatorListRefCount=15
>>
>>
>>
>>
>>
>> Bosco
>>
>>
>>
>> *From: *Odon Copon <odonco...@gmail.com>
>> *Reply-To: *<user@ranger.apache.org>
>> *Date: *Friday, January 11, 2019 at 7:23 AM
>> *To: *<user@ranger.apache.org>
>> *Subject: *Re: Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> On the namenode I'm editing install.properties file and then "sudo
>> ./enable-hdfs-plugin.sh".
>>
>> Then I'm restarting the namenode service.
>>
>>
>>
>> On Fri, 11 Jan 2019 at 15:19, Don Bosco Durai <bo...@apache.org> wrote:
>>
>> It is every 30 seconds. If you are not seeing anything, then it might be
>> a configuration issue. How are you enabling the HDFS plugin?
>>
>>
>>
>> Bosco
>>
>>
>>
>>
>>
>> *From: *Odon Copon <odonco...@gmail.com>
>> *Reply-To: *<user@ranger.apache.org>
>> *Date: *Friday, January 11, 2019 at 7:18 AM
>> *To: *<user@ranger.apache.org>
>> *Subject: *Re: Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> 1.- How often is the plugin pulling policies from the API?
>>
>> 2.- I don't see anything in the logs regarding the plugin, how can I
>> ensure is it running correctly?
>>
>> 3.- If I run a manual CURL requesting the policies I can see the UI is
>> showing that attempt to retrieve the policies, with a 200. But just the
>> manual CURL requests, no requests coming from the plugin.
>>
>>
>>
>> On Fri, 11 Jan 2019 at 14:58, Don Bosco Durai <bo...@apache.org> wrote:
>>
>> Also make sure you have the correct hostname and port for Ranger Admin.
>>
>>
>>
>> Bosco
>>
>>
>>
>>
>>
>> *From: *Velmurugan Periasamy <vperias...@hortonworks.com>
>> *Reply-To: *<user@ranger.apache.org>
>> *Date: *Friday, January 11, 2019 at 6:32 AM
>> *To: *"user@ranger.apache.org" <user@ranger.apache.org>
>> *Subject: *Re: Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> You can check namenode log for any errors from HDFS plugin.
>>
>>
>> ------------------------------
>>
>> *From:* Odon Copon <odonco...@gmail.com>
>> *Sent:* Friday, January 11, 2019 9:21 AM
>> *To:* user@ranger.apache.org
>> *Subject:* Re: Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> I fired manually a CURL request to
>> "/service/plugins/policies/download/<service_name>" and now the UI is
>> displaying some information in plugin tab.
>>
>> 1. Is Ranger Admin thinking the call was made from the plugin and is
>> trying to list it?
>>
>> 2. If plugin would have executed this request, the UI should have
>> displayed this information earlier, right?
>>
>> 3. Any specific log to check for more information?
>>
>>
>>
>> On Fri, 11 Jan 2019 at 14:07, Velmurugan Periasamy <
>> vperias...@hortonworks.com> wrote:
>>
>> ​You should see plugin sync'ing policies in plugin tab. If it is not
>> showing up, you need to check the logs for any error messages.
>> ------------------------------
>>
>> *From:* Odon Copon <odonco...@gmail.com>
>> *Sent:* Friday, January 11, 2019 8:47 AM
>> *To:* user@ranger.apache.org
>> *Subject:* Re: Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> ok, seems "service/plugins/policies/download/" has public access, so
>> confirms what we have been discussing, no authorization is required to
>> download the policies. Good to know, thanks guys.
>>
>> The question know is how to know the plugin is calling this endpoint, and
>> working properly, because the UI doesn't display this plugin. Any tip on
>> this?
>>
>>
>>
>> On Fri, 11 Jan 2019 at 13:08, Odon Copon <odonco...@gmail.com> wrote:
>>
>> Yes, makes sense to have a 2-way SSL between the plugin and Ranger Admin,
>> but:
>>
>>  - 1. Does it mean there's no authentication at all between them?
>>
>>  - 2. If there's no authentication, shouldn't a simple CURL work? At the
>> moment if no user/pass is provided the API returns 401, or is there another
>> different endpoint? If so, which one is it?
>>
>>  - 3. What is the best way to debug the plugin is communicating or trying
>> to communicate with Ranger admin?
>>
>>
>>
>> Thanks.
>>
>>
>>
>>
>>
>> On Fri, 11 Jan 2019 at 12:53, Velmurugan Periasamy <
>> vperias...@hortonworks.com> wrote:
>>
>> If there is no kerberos HDFS plugin uses the open Download policies API,
>> so it is recommended to use 2-way SSL between HDFS plugin and Ranger Admin.
>>
>>
>> On Jan 11, 2019, at 5:26 AM, Odon Copon <odonco...@gmail.com> wrote:
>>
>> I cannot perform a CURL to the API from the namenode without
>> user/password, I get a 401 when doing that. So it might required
>> credentials to do that. If I use the admin/password credentials or
>> rangerusersync credentials the CURL works. So wondering if those
>> credentials need to be setup somewhere.
>>
>>
>>
>> On Fri, 11 Jan 2019 at 10:15, Don Bosco Durai <bo...@apache.org> wrote:
>>
>> > In terms of "no authentication", is the HDFS plugin using Policy
>> Manager API with no credentials at all?
>>
>> No credentials, because there is no user/password for HDFS service user.
>> It’s been a while, I think we used to have admin/password before, but it
>> was taken out eventually. The code might be still there…
>>
>>
>>
>> > What's the first action the plugin is performing to be detected by the
>> UI as active and 200 response?
>>
>> Abhay or Madhan might be able to give you more specifics. Since the
>> plugins are polling and it knows the previous version number, if there are
>> no changes, then it is not registered in the UI. The plugins primarily pull
>> the policies and tags from Ranger Admin. Rest everything is done by the
>> plugin within the component.
>>
>>
>>
>> Bosco
>>
>>
>>
>>
>>
>> *From: *Odon Copon <odonco...@gmail.com>
>> *Reply-To: *<user@ranger.apache.org>
>> *Date: *Friday, January 11, 2019 at 2:03 AM
>> *To: *<user@ranger.apache.org>
>> *Subject: *Re: Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> Indeed, I know that at the moment without something like Kerberos, users
>> can impersonate others, but I'm currently building a POC with the basic
>> security to evaluate Ranger, and once is ready, start improving the
>> security and scalability. But thank you for pointing that out.
>>
>> In terms of "no authentication", is the HDFS plugin using Policy Manager
>> API with no credentials at all? or default ones?
>>
>> What's the first action the plugin is performing to be detected by the UI
>> as active and 200 response? Some king of ping/heartbeat? or just a rest
>> petition to download the policies?
>>
>> Is there anywhere where I can see in the logs what kind of actions the
>> plugin is doing? I don't find any log information coming from the plugin.
>>
>>
>>
>> Thanks!
>>
>>
>>
>> On Fri, 11 Jan 2019 at 09:53, Don Bosco Durai <bo...@apache.org> wrote:
>>
>> If there is no Kerberos, then you have 2 options:
>>
>>    1. No authentication (default)
>>    2. Two way SSL to authenticate the request from the plugin.
>>
>>
>>
>> Note, if it is non-Kerberos environment, then authorization cannot be
>> enforced, because users can impersonate anyone.
>>
>>
>>
>> Bosco
>>
>>
>>
>>
>>
>> *From: *Odon Copon <odonco...@gmail.com>
>> *Reply-To: *<user@ranger.apache.org>
>> *Date: *Friday, January 11, 2019 at 1:22 AM
>> *To: *<user@ranger.apache.org>
>> *Subject: *Re: Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> Mmm, but what if the system is not using Kerberos?
>>
>>
>>
>> On Fri, 11 Jan 2019, 04:21 Velmurugan Periasamy <
>> vperias...@hortonworks.com wrote:
>>
>> ​Yes, that's what I referred to.
>>
>>
>> ------------------------------
>>
>> *From:* Odon Copon <odonco...@gmail.com>
>> *Sent:* Thursday, January 10, 2019 5:07 PM
>> *To:* user@ranger.apache.org
>> *Subject:* Re: Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> Are we talking about principal in Kerberos or any other principal I'm not
>> understanding?
>>
>>
>>
>> On Thu, 10 Jan 2019 at 18:05, Odon Copon <odonco...@gmail.com> wrote:
>>
>> What do you mean by *HDFS plugin uses service (Namenode) user's
>> principal *?
>>
>> Could you provide an example?
>> Thanks.
>>
>>
>>
>> On Thu, 10 Jan 2019 at 17:08, Velmurugan Periasamy <
>> vperias...@hortonworks.com> wrote:
>>
>> HDFS plugin uses service (Namenode) user's principal.
>>
>>
>> ------------------------------
>>
>> *From:* Odon Copon <odonco...@gmail.com>
>> *Sent:* Thursday, January 10, 2019 8:59 AM
>> *To:* user@ranger.apache.org
>> *Subject:* Accessing Ranger Policy Manager API from HDFS plugin
>>
>>
>>
>> Hi,
>>
>> How does the Ranger HDFS plugin communicates with the Policy Manager API?
>> Is it using a specific user/password combination?
>>
>> I know the User Sync has rangerusersync user and pass, and all that
>> information is stored in rangerusersync.jceks, but what about the HDFS
>> plugin or any other plugin?
>> I'm having issues with that, my plugin once enabled doesn't get displayed
>> in the UI and would like to check the credentials the plugin is using to
>> use the API.
>>
>> For the User Sync - Policy Manager communication works fine.
>>
>>
>>
>> Thanks.
>>
>>

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