Accessing inventory host variable in Ansible playbook

Question

I am using Ansible 2 1   I have the following inventory host file and a role being called by a play that needs access to the host file variable   Any thoughts on how to access it  currently getting an error   Host file  test1  test-1 ansible ssh host abc def ghi jkl ansible ssh port 1212   test2  test2-1 ansible ssh host abc def ghi mno ansible ssh port 1212   test3  test3-1 ansible ssh host abc def ghi pqr ansible ssh port 1212 test3-2 ansible ssh host abc def ghi stu ansible ssh port 1212   all children  test1 test2 test3  role I have tried accessing the role in the following fashions     hostvars ansible ssh host       amp  amp     hostvars test1 ansible ssh host     I am trying to access the ansible ssh host in the test1 section  Error fatal   localhost   FAILED    gt    quot failed quot   true   quot msg quot    quot  ansible vars hostvars HostVars object  has no attribute  ansible  quot

User · Accepted Answer

You are on the right track about hostvars  This magic variable is used to access information about other hosts  hostvars is a hash with inventory hostnames as keys  To access fields of each host  use hostvars  test-1    hostvars  test2-1    etc  ansible ssh host is deprecated in favor of ansible host since 2 0  So you should first remove  quot  ssh quot  from inventory hosts arguments  i e  to become  quot ansible user quot    quot ansible host quot   and  quot ansible port quot    then in your role call it with     hostvars  your host group   ansible host

User · Answer

You should be able to use the variable name directly  ansible ssh host   Or you can go through hostvars without having to specify the host literally by using the magic variable inventory hostname  hostvars inventory hostname  ansible ssh host

User · Answer

I struggled with this  too  My specific setup is  Your host ini  with the modern names     test3  test3-1 ansible host abc def ghi pqr ansible port 1212 test3-2 ansible host abc def ghi stu ansible port 1212   plus a play fill file yml  --- - remote user  ec2-user   hosts  test3   tasks     - name  fill file      template         src  file j2        dest  filled file txt   plus a template file j2   like      for host in groups  test3            hostvars host  ansible host       endfor      This worked for me  the result is  abc def ghi pqr abc def ghi stu   I have to admit it s ansible 2 7  not 2 1  The template is a variation of an example in https   docs ansible com ansible latest user guide playbooks variables html    The accepted answer didn t work in my setup  With a template     hostvars  test3   ansible host      my play fails with  AnsibleUndefinedVariable    hostvars  test3     is undefined      Remark  I tried some variations  but failed  occasionally with  ansible vars hostvars HostVars object has no element    Some of this might be explained by what they say  in https   github com ansible ansible issues 13343 issuecomment-160992631      hostvars emulates a dictionary        hostvars is also lazily loaded

User · Answer

Thanks a lot this note was very useful for me   Was able to send the variable defined under  group var vars in the ansible playbook as indicated below   tasks      - name  check service account password expiry      - command    sh  home monit get ldap attr sh    item       LDAP AUTH USR

User · Answer

I ve found also a nice and simple way to address hostsvars right on one of Ansible s Github issues  Looks like you can do this as well    - debug      msg      ansible ssh host

User · Answer

host group  host-1 ansible ssh host 192 168 0 21 node name foo host-2 ansible ssh host 192 168 0 22 node name bar   host group vars  custom var asdasdasd   You can access host group vars using      hostvars  host group   custom var      If you need a specific value from specific host  you can use      hostvars groups  host group   0   node name

[ansible] Accessing inventory host variable in Ansible playbook

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