Elastic search + Shield instance is not authenticating logstash user

robertranjan · November 18, 2015, 7:49am

I'm sending events from logstash 2.0 to ES 2.0 with shield. ES is not accepting any events/logs/requests for logstash user though roles are seems correct.

Here is my roles.yml setting:

logstash:
  cluster: indices:admin/template/get, indices:admin/template/put
  indices:
    'logstash-*':
      privileges: indices:data/write/bulk, indices:data/write/delete, indices:data/write/update, indices:data/read/search, indices:data/read/scroll, create_index, cluster:monitor/state

Still ES throws below error in elasticserch.log.

---snip---

[2015-11-18 06:47:20,876][INFO ][rest.suppressed          ] /_bulk Params: {}
ElasticsearchSecurityException[action [indices:data/write/bulk] is unauthorized for user [logstash]]
        at org.elasticsearch.shield.support.Exceptions.authorizationError(Exceptions.java:45)
        at org.elasticsearch.shield.authz.InternalAuthorizationService.denialException(InternalAuthorizationService.java:296)
        at org.elasticsearch.shield.authz.InternalAuthorizationService.denial(InternalAuthorizationService.java:270)
        at org.elasticsearch.shield.authz.InternalAuthorizationService.authorize(InternalAuthorizationService.java:131)
        at org.elasticsearch.shield.action.ShieldActionFilter.apply(ShieldActionFilter.java:105)
        at org.elasticsearch.action.support.TransportAction$RequestFilterChain.proceed(TransportAction.java:99)

dadoonet · November 18, 2015, 9:43am

What does your role_mapping file look like? Check that you did not invert user and role. Role should be first.

What does your elasticsearch output plugin configuration look like?

robertranjan · November 18, 2015, 4:45pm

[root@es1 shield]# cat /etc/elasticsearch/shield/roles.yml
# All cluster rights
# All operations on all indices
admin:
  cluster: all
  indices:
    '*':
      privileges: all

# monitoring cluster privileges
# All operations on all indices
power_user:
  cluster: monitor
  indices:
    '*':
      privileges: all

# Read-only operations on indices
user:
  indices:
    '*':
      privileges: read

# Defines the required permissions for transport clients
transport_client:
  cluster:
      - cluster:monitor/nodes/liveness
      #uncomment the following for sniffing
      #- cluster:monitor/state

# The required role for logstash users
logstash:
  cluster: indices:admin/template/get, indices:admin/template/put
  indices:
    'logstash-*':
      privileges: indices:data/write/bulk, indices:data/write/delete, indices:data/write/update, indices:data/read/search, indices:data/read/scroll, create_index, cluster:monitor/state

# The required permissions for kibana 4 users.
kibana4:
  cluster:
      - cluster:monitor/nodes/info
      - cluster:monitor/health
  indices:
    '*':
      privileges: indices:admin/mappings/fields/get, indices:admin/validate/query, indices:data/read/search, indices:data/read/msearch, indices:admin/get
    '.kibana':
      privileges: indices:admin/exists, indices:admin/mapping/put, indices:admin/mappings/fields/get, indices:admin/refresh, indices:admin/validate/query, indices:data/read/get, indices:data/read/mget, indices:data/read/search, indices:data/write/delete, indices:data/write/index, indices:data/write/update

# The required permissions for the kibana 4 server
kibana4_server:
  cluster:
      - cluster:monitor/nodes/info
      - cluster:monitor/health
  indices:
    '.kibana':
      privileges: indices:admin/create, indices:admin/exists, indices:admin/mapping/put, indices:admin/mappings/fields/get, indices:admin/refresh, indices:admin/validate/query, indices:data/read/get, indices:data/read/mget, indices:data/read/search, indices:data/write/delete, indices:data/write/index, indices:data/write/update

kibana4_monitoring:
  cluster:
      - cluster:monitor/nodes/info
      - cluster:monitor/health
  indices:
    'logstash-*':
      - indices:admin/mappings/fields/get
      - indices:admin/validate/query
      - indices:data/read/search
      - indices:data/read/msearch
      - indices:admin/get
    '.kibana':
      - indices:admin/create
      - indices:admin/exists
      - indices:admin/mapping/put
      - indices:admin/mappings/fields/get
      - indices:admin/refresh
      - indices:admin/validate/query
      - indices:data/read/get
      - indices:data/read/mget
      - indices:data/read/search
      - indices:data/write/delete
      - indices:data/write/index
      - indices:data/write/update


# Marvel user role. Assign to marvel users.
marvel_user:
  indices:
    '.marvel-es-*':
      privileges: read
    '.kibana':
      privileges: indices:admin/exists, indices:admin/mappings/fields/get, indices:admin/validate/query, indices:data/read/get, indices:data/read/mget, indices:data/read/search

# Marvel remote agent role. Assign to the agent user on the remote marvel cluster
# to which the marvel agent will export all its data
remote_marvel_agent:
  cluster: indices:admin/template/put, indices:admin/template/get
  indices:
    '.marvel-es-*':
      privileges: all

robertranjan · November 18, 2015, 4:47pm

I did not make any changes to role_mapping.yml. Here it is:

[root@es1 shield]# cat role_mapping.yml
# Role mapping configuration file which has elasticsearch roles as keys
# that map to one or more user or group distinguished names

#roleA:   this is an elasticsearch role
#  - groupA-DN  this is a group distinguished name
#  - groupB-DN
#  - user1-DN   this is the full user distinguished name

#power_user:
#  - "cn=admins,dc=example,dc=com"
#user:
#  - "cn=users,dc=example,dc=com"
#  - "cn=admins,dc=example,dc=com"
#  - "cn=John Doe,cn=other users,dc=example,dc=com"

robertranjan · November 18, 2015, 6:52pm

logstash elasticsearch output:

output {
  elasticsearch {
	#protocol => "transport"
	#hosts => [ "es1.DOMAIN:9200","es2.DOMAIN:9200","es3.DOMAIN:9200" ]
	#hosts => [ "es1.DOMAIN","es2.DOMAIN","es3.DOMAIN" ]
        #index => "logstash-%{+YYYY.MM.dd}"
        #port => "9300"
  
	hosts => [ "es1.DOMAIN:9200" ]
	keystore => "/opt/keys/cert.pem"
	keystore_password => "plain_text_password_with_@_symbol"
	user	=> "logstash"
	password	=>	"logstash" # removed symbols for now
	#password	=>	"hash_copied_from_es_users"
        #network_host   => "es1.DOMAIN"
  }
}

jaymode · November 19, 2015, 9:40pm

can you print the roles of the logstash user using the esusers command? esusers list logstash

robertranjan · November 23, 2015, 9:03pm

I'm sorry for the delayed response.

[root@es1 elasticsearch]# bin/shield/esusers list logstash
logstash       : logstash
[root@es1 elasticsearch]#

pickypg · November 25, 2015, 1:39am

Maybe we can take a step back and explore something simpler. I just freshly installed Shield to attempt this by creating a Logstash user without anything else added or modified (beyond setting the network.host setting):

Install Elasticsearch 2.0.0
Install Shield and License plugins
Create Logstash user with the existing logstash role:

bin/shield/esusers logstash -p logstash -r logstash
```

Start Elasticsearch.
Create a JSON file to send as part of a manual _bulk payload, which I will call test.json (note: I picked an index name that does not exist so that it can be safely deleted afterward). The \n's (press enter) are meant to be literally typed by you and it's important to note that both lines must end with one!

{ "index" : { "_index" : "logstash-dne", "_type" : "log", "_id" : "1" } }\n
{ "message" : "this is text!" }\n
```

Use the above file to create the index via the _bulk API:

$ curl -u logstash -XPOST es1.DOMAIN:9200/_bulk --data-binary @test.json
```

On my side, this worked. Once you can verify that this works, then we can probably start to work backward to figure out what is different so that we can determine why it's not working.

Note: I did not add any keystore settings anywhere because I did not configure SSL/TLS.

robertranjan · December 7, 2015, 9:56pm

I don't know what was the problem but re-installing ES and shield fixed my issue.

Thanks for your help. You may go ahead and close this ticket as RESOLVED.

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Elastic search + Shield instance is not authenticating logstash user

Here is my roles.yml setting:

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