Hi all,
The section of the playbook that I am experiencing a failure
(authenication failure) on is as follows:
- name: Enable passwordless connection as hdfs user to namenode host
authorized_key: user=hdfs key="{{ lookup('file', '~/.ssh/id_rsa.pub') }}"
when: action == "format_hdfs" and "{{ ansible_hostname }}" in "{{
groups['hadoop_namenodes'] }}"
tags: formathdfs
- name: Format HDFS on namenode
remote_user: hdfs
shell: source ~/.profile && {{ install_directory }}/hadoop/bin/hdfs
namenode -format -force
args:
executable: /bin/bash
when: action == "format_hdfs" and "{{ ansible_hostname }}" in "{{
groups['hadoop_namenodes'] }}"
tags: formathdfs
When I run the playbook as 'root' I get a failure, even though I have set
the failing task's "remote_user" to the appropriate user, and have (in the
prior task) done a SSH key exchange for that user...
ansible-playbook -u root -k -i test hadoop-site.yml --tags=formathdfs --
limit=hadoop-test1
[...]
PLAY [hadoop_namenodes]
*******************************************************
GATHERING FACTS
***************************************************************
ok: [hadoop-test1]
TASK: [do-hadoop | Enable passwordless connection as hdfs user to namenode
host] ***
ok: [hadoop-test1]
TASK: [do-hadoop | Format HDFS on namenode]
***********************************
fatal: [hadoop-test1] => Authentication failure.
FATAL: all hosts have already failed -- aborting
PLAY RECAP
********************************************************************
to retry, use: --limit @/home/will/hadoop-site.retry
hadoop-test1 : ok=4 changed=0 unreachable=1 failed=0
However, if I run playbook as the user that needs to perform the failing
step ('hdfs'), it works...
ansible-playbook -u hdfs -i test hadoop-site.yml --tags=formathdfs --limit=
hadoop-test1
[...]
PLAY [hadoop_namenodes]
*******************************************************
GATHERING FACTS
***************************************************************
ok: [hadoop-test1]
TASK: [do-hadoop | Enable passwordless connection as hdfs user to namenode
host] ***
ok: [hadoop-test1]
TASK: [do-hadoop | Format HDFS on namenode]
***********************************
changed: [hadoop-test1]
PLAY RECAP
********************************************************************
hadoop-test1 : ok=5 changed=1 unreachable=0 failed=0
Can someone explain to me why the first case is failing, and how I could
get it to work?
Thanks,
Will
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