ssh password strategy for populating known_hosts so remote hosts can access each other. This assumes we already have an ansible controller with paswordless loging from it to each remote host. We are trying to add passwordless logins BETWEEN the remote hosts.

output_ssh-copy-id

OUTPUT1

TASK: [Set up passwordless ssh between nodes] ********************************* 
failed: [Ubuntu-Cluster-02] => (item=Ubuntu-Cluster-01) => {"changed": true, "cmd": ["ssh-copy-id", "accumulo@Ubuntu-Cluster-01"], "delta": "0:00:00.005403", "end": "2013-10-30 11:13:56.342835", "item": "Ubuntu-Cluster-01", "rc": 1, "start": "2013-10-30 11:13:56.337432"}
failed: [Ubuntu-Cluster-05] => (item=Ubuntu-Cluster-01) => {"changed": true, "cmd": ["ssh-copy-id", "accumulo@Ubuntu-Cluster-01"], "delta": "0:00:00.004475", "end": "2013-10-30 11:13:56.495424", "item": "Ubuntu-Cluster-01", "rc": 1, "start": "2013-10-30 11:13:56.490949"}
stderr: /usr/bin/ssh-copy-id: ERROR: No identities found
stderr: /usr/bin/ssh-copy-id: ERROR: No identities found


----------
OUTPUT2

HANGS FOREVER

output_sshpass

[kbroughton@mb-kbroughton:lynx-accumulo/bootstrap + (master)] ansible-playbook -i hosts -u accumulo bootstrap.yml --extra-vars="user=accumulo pwd=accumulo" --start-at-task="Use sshpass to distribute keys" -vvvv



TASK: [Use sshpass to distribute keys] **************************************** 
<Ubuntu-Cluster-01> ESTABLISH CONNECTION FOR USER: accumulo
<Ubuntu-Cluster-01> EXEC ['ssh', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/kbroughton/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'Port=22', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=accumulo', '-o', 'ConnectTimeout=10', 'Ubuntu-Cluster-01', "/bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-1383148594.41-266920982890351 && chmod a+rx $HOME/.ansible/tmp/ansible-1383148594.41-266920982890351 && echo $HOME/.ansible/tmp/ansible-1383148594.41-266920982890351'"]
<Ubuntu-Cluster-03> ESTABLISH CONNECTION FOR USER: accumulo
<Ubuntu-Cluster-02> ESTABLISH CONNECTION FOR USER: accumulo
<Ubuntu-Cluster-03> EXEC ['ssh', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/kbroughton/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'Port=22', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=accumulo', '-o', 'ConnectTimeout=10', 'Ubuntu-Cluster-03', "/bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-1383148594.41-278582711393567 && chmod a+rx $HOME/.ansible/tmp/ansible-1383148594.41-278582711393567 && echo $HOME/.ansible/tmp/ansible-1383148594.41-278582711393567'"]
<Ubuntu-Cluster-02> EXEC ['ssh', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/kbroughton/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'Port=22', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=accumulo', '-o', 'ConnectTimeout=10', 'Ubuntu-Cluster-02', "/bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-1383148594.41-256535448647319 && chmod a+rx $HOME/.ansible/tmp/ansible-1383148594.41-256535448647319 && echo $HOME/.ansible/tmp/ansible-1383148594.41-256535448647319'"]
<Ubuntu-Cluster-01> REMOTE_MODULE command sshpass -f /home/accumulo/.ssh/accumulo_pwd ssh -o StrictHostKeyChecking=no accumulo@Ubuntu-Cluster-01 #USE_SHELL
<Ubuntu-Cluster-01> PUT /var/folders/t2/h22337c12hn279xwd4s9fk7s8_088c/T/tmprSYZV_ TO /home/accumulo/.ansible/tmp/ansible-1383148594.41-266920982890351/command
<Ubuntu-Cluster-02> REMOTE_MODULE command sshpass -f /home/accumulo/.ssh/accumulo_pwd ssh -o StrictHostKeyChecking=no accumulo@Ubuntu-Cluster-01 #USE_SHELL
<Ubuntu-Cluster-02> PUT /var/folders/t2/h22337c12hn279xwd4s9fk7s8_088c/T/tmpRfx_5V TO /home/accumulo/.ansible/tmp/ansible-1383148594.41-256535448647319/command
<Ubuntu-Cluster-01> EXEC ['ssh', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/kbroughton/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'Port=22', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=accumulo', '-o', 'ConnectTimeout=10', 'Ubuntu-Cluster-01', '/bin/sh -c \'sudo -k && sudo -H -S -p "[sudo via ansible, key=tcnreauluoocabxhpvwawlspixboohwr] password: " -u root /bin/sh -c \'"\'"\'/usr/bin/python /home/accumulo/.ansible/tmp/ansible-1383148594.41-266920982890351/command; rm -rf /home/accumulo/.ansible/tmp/ansible-1383148594.41-266920982890351/ >/dev/null 2>&1\'"\'"\'\'']
<Ubuntu-Cluster-04> ESTABLISH CONNECTION FOR USER: accumulo
<Ubuntu-Cluster-05> ESTABLISH CONNECTION FOR USER: accumulo
<Ubuntu-Cluster-04> EXEC ['ssh', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/kbroughton/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'Port=22', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=accumulo', '-o', 'ConnectTimeout=10', 'Ubuntu-Cluster-04', "/bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-1383148594.48-220362028286222 && chmod a+rx $HOME/.ansible/tmp/ansible-1383148594.48-220362028286222 && echo $HOME/.ansible/tmp/ansible-1383148594.48-220362028286222'"]
<Ubuntu-Cluster-05> EXEC ['ssh', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/kbroughton/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'Port=22', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=accumulo', '-o', 'ConnectTimeout=10', 'Ubuntu-Cluster-05', "/bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-1383148594.48-68839426472120 && chmod a+rx $HOME/.ansible/tmp/ansible-1383148594.48-68839426472120 && echo $HOME/.ansible/tmp/ansible-1383148594.48-68839426472120'"]
<Ubuntu-Cluster-03> REMOTE_MODULE command sshpass -f /home/accumulo/.ssh/accumulo_pwd ssh -o StrictHostKeyChecking=no accumulo@Ubuntu-Cluster-01 #USE_SHELL
<Ubuntu-Cluster-03> PUT /var/folders/t2/h22337c12hn279xwd4s9fk7s8_088c/T/tmprSYZV_ TO /home/accumulo/.ansible/tmp/ansible-1383148594.41-278582711393567/command
<Ubuntu-Cluster-02> EXEC ['ssh', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/kbroughton/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'Port=22', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=accumulo', '-o', 'ConnectTimeout=10', 'Ubuntu-Cluster-02', '/bin/sh -c \'sudo -k && sudo -H -S -p "[sudo via ansible, key=fffmurthvfelzscsnbpavkrmxlcpqaav] password: " -u root /bin/sh -c \'"\'"\'/usr/bin/python /home/accumulo/.ansible/tmp/ansible-1383148594.41-256535448647319/command; rm -rf /home/accumulo/.ansible/tmp/ansible-1383148594.41-256535448647319/ >/dev/null 2>&1\'"\'"\'\'']
<Ubuntu-Cluster-03> EXEC ['ssh', '-tt', '-vvv', '-o', 'ControlMaster=auto', '-o', 'ControlPersist=60s', '-o', 'ControlPath=/Users/kbroughton/.ansible/cp/ansible-ssh-%h-%p-%r', '-o', 'Port=22', '-o', 'KbdInteractiveAuthentication=no', '-o', 'PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey', '-o', 'PasswordAuthentication=no', '-o', 'User=accumulo', '-o', 'ConnectTimeout=10', 'Ubuntu-Cluster-03', '/bin/sh -c \'sudo -k && sudo -H -S -p "[sudo via ansible, key=mqbibdejgarcqssvlybirohctiwuimsh] password: " -u root /bin/sh -c \'"\'"\'/usr/bin/python /home/accumulo/.ansible/tmp/ansible-1383148594.41-278582711393567/command; rm -rf /home/accumulo/.ansible/tmp/ansible-1383148594.41-278582711393567/ >/dev/null 2>&1\'"\'"\'\'']

HANGS FOREVER

ssh-copy-id.yml

################# 
#http://serverfault.com/questions/306541/automating-ssh-copy-id

    - name: Set StrictHostKeyChecking no in ~/.ssh/config
      lineinfile: create=yes dest="/home/{{user}}/.ssh/config"
                  regexp=StrictHostKeyChecking
                  line="StrictHostKeyChecking no"

# This works on the commandline but requires a prompt. 
# But wrapped in ansible, it gives OUTPUT1 below.
    - name: Set up passwordless ssh between nodes
      command: ssh-copy-id {{user}}@{{item}}
      with_items: groups['all']

#OUTPUT2
    - name: Set up passwordless ssh between nodes
      command: ssh-copy-id -i "/home/{{user}}/.ssh/id_rsa.pub" {{user}}@{{item}}
      with_items: groups['all']
      
##################

This is advertised to work on the serverfault site, but I could not get it to work without 
giving a password at least once.  Thus it hangs for ansible.

sshpass.yml

# sshpass method
# http://stackoverflow.com/questions/12202587/ssh-script-that-automatically-enters-password
    - name: Copy the user pwds to hosts
      copy: content={{pwd}} dest="/home/{{user}}/.ssh/{{user}}_pwd"

    - name: Use sshpass to distribute keys
      shell: sshpass -f /home/{{user}}/.ssh/{{user}}_pwd ssh -o StrictHostKeyChecking=no {{user}}@{{item}}
      with_items: groups['all']
      
      
# This works from the commandline of 03 adding a key to 05 after placing the pwd in accumulo_pwd.
accumulo@Ubuntu-Cluster-03:~$ sshpass -f /home/accumulo/.ssh/accumulo_pwd ssh -o StrictHostKeyChecking=no accumulo@Ubuntu-Cluser-05

# But when wrapped in ansible, it hangs forever.