I am working on a playbook so I can automate adding ranger policies for hdfs from a json file. So I am trying to fetch a json file with ranger hdfs policies in ansible playbook, here is the json file :   { "ranger_policies": [ { "hdfs_policie": { "policie": { "name": "/lili R g_lab_test_pb1", "path": "/lili", "permissions": { "groups": { "name": "g_lab_test_pb1", "accesses": [ "Read" ] }, "users": { "name": "lili", "accesses": [ "Read", "Write" ] } } } } }, { "hdfs_policie": { "policie": { "name": "/lala RX g_lab_test_pb1", "path": "/lala", "permissions": { "groups": { "name": "g_lab_test_pb1", "accesses": [ "Read", "Execute" ] }, "users": { "name": "lala", "accesses": [ "Read", "Write", "Execute" ] } } } } } ] }     And this is my playbook file :   - name: "ranger policie hdfs" vars: jsonVar: "{{ lookup('file', 'users.json') | from_json }}" ranger_hdfs_policies: state: present admin_url: "https://{{RANGER_ADMIN_SERVER}}:6182" admin_username: "admin" admin_password: "{{RANGER_ADMIN_PASSWORD}}" validate_certs: no service_name: "{{CLUSTER_NAME}}_hadoop" policies: - name: "{{ list.hdfs_policie.policie.name }}" paths: - "{{ list.hdfs_policie.policie.path }}" permissions: - groups: - "{{ list.hdfs_policie.policie.permissions.groups.name }}" accesses: - "{{ list.hdfs_policie.policie.permissions.groups.accesses }}" delegate_admin: true - users: - "{{ list.hdfs_policie.policie.permissions.users.name }}" accesses: - "{{ list.hdfs_policie.policie.permissions.users.accesses }}" delegate_admin: true loop: "{{ jsonVar.ranger_policies }}" loop_control: loop_var: list tags: - ranger_policies   When passing this playbook, I get this error :   "msg": "HDFS policy '/lala RX g_lab_test_pb1': : All items of list 'accesses' must be non null string"   I don't know why it gives me this, because all the fields are satisfied. Is there anyone knows the source of this problem ? Thanks for advance. ... View more

I was trying to sychnronize the ambari server with the ldap ipa using '/usr/sbin/ambari-server sync-ldap --all', which didn't pass, saying ambari-server were stoped (It was NOT), anyway I did a kill -9 to the ambari server process, and started it again. After that I passe the sync command with success. After this, yarn wouldn't start and gave me this error while trying to start resourcemanager :       stderr: Traceback (most recent call last): File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 150, in _call_wrapper result = _call(command, **kwargs_copy) File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 314, in _call raise ExecutionFailed(err_msg, code, out, err) ExecutionFailed: Execution of 'ambari-sudo.sh -H -E test -f /var/run/hadoop-yarn/yarn/hadoop-yarn-resourcemanager.pid && ambari-sudo.sh -H -E pgrep -F /var/run/hadoop-yarn/yarn/hadoop-yarn-resourcemanager.pid' returned 1. The above exception was the cause of the following exception: Traceback (most recent call last): File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/resourcemanager.py", line 261, in Resourcemanager().execute() File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 352, in execute method(env) File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/resourcemanager.py", line 144, in start service('resourcemanager', action='start') File "/usr/lib/ambari-agent/lib/ambari_commons/os_family_impl.py", line 89, in thunk return fn(*args, **kwargs) File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/service.py", line 116, in service try_sleep=1, File "/usr/lib/ambari-agent/lib/resource_management/core/base.py", line 166, in __init__ self.env.run() File "/usr/lib/ambari-agent/lib/resource_management/core/environment.py", line 160, in run self.run_action(resource, action) File "/usr/lib/ambari-agent/lib/resource_management/core/environment.py", line 124, in run_action provider_action() File "/usr/lib/ambari-agent/lib/resource_management/core/providers/system.py", line 263, in action_run returns=self.resource.returns) File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 72, in inner result = function(command, **kwargs) File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 102, in checked_call tries=tries, try_sleep=try_sleep, timeout_kill_strategy=timeout_kill_strategy, returns=returns) File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 150, in _call_wrapper result = _call(command, **kwargs_copy) File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 314, in _call raise ExecutionFailed(err_msg, code, out, err)       Thanks in advance ... View more