ansible_hostname in with_items

[Bachu Prathap]

Hi Team

I am writing a playbook to automate assigning an IP address to a set of hosts, however, I am stuck at pulling IP details from vars_files. below is the code, any pointers will be much helpful to me. thank you.

vars_files:

[root@dljdaprdqmc1v commvault]# cat host_ip.yml

dlabcpdtmdb1v: 172.20.0.63

[root@dljdaprdqmc1v commvault]#

[root@dljdaprdqmc1v commvault]# cat check_ip.yml

---

- hosts: all

  remote_user: root

  vars_files:

  - host_ip.yml

  tasks:

  - shell: ip  a s | grep DOWN | /bin/awk -F":" '{$2=$2;print}' | /bin/awk '{print $2}'

    register: nic

    ignore_errors: yes

  - stat: path=/etc/sysconfig/network-scripts/ifcfg-{{nic.stdout}}

    register: nicfile

    ignore_errors: yes

  - lineinfile: path=/tmp/ifcfg-{{nic.stdout}} line={{item}} create=yes

    with_items:

    - TYPE=Ethernet

    - BOOTPROTO=static

    - DEFROUTE=yes

    - PEERDNS=yes

    - PEERROUTES=yes

    - IPV4_FAILURE_FATAL=no

    - IPV6INIT=no

    - IPV6_AUTOCONF=no

    - IPV6_DEFROUTE=no

    - IPV6_PEERDNS=no

    - IPV6_PEERROUTES=no

    - IPV6_FAILURE_FATAL=no

    - NAME={{nic.stdout}}

    - DEVICE={{nic.stdout}}

    - ONBOOT=yes

    - IPADDR="{{ansible_hostname}}" <== here i need to get value from host_ip.yml which allocate that host

    - NETMASK=255.255.252.0

    when: nicfile.stat.exists == false

[root@dljdaprdqmc1v commvault]#

[root@dljdaprdqmc1v commvault]# ansible-playbook -i list_test check_ip.yml

PLAY [all] ********************************************************

TASK [Gathering Facts] ****************************************************

ok: [dlabcpdtmdb1v]

TASK [command] ******************************************************

changed: [dlabcpdtmdb1v]

TASK [stat] *******************************************************

ok: [dlabcpdtmdb1v]

TASK [lineinfile] *****************************************************

ok: [dlabcpdtmdb1v] => (item=TYPE=Ethernet)

ok: [dlabcpdtmdb1v] => (item=BOOTPROTO=static)

ok: [dlabcpdtmdb1v] => (item=DEFROUTE=yes)

ok: [dlabcpdtmdb1v] => (item=PEERDNS=yes)

ok: [dlabcpdtmdb1v] => (item=PEERROUTES=yes)

ok: [dlabcpdtmdb1v] => (item=IPV4_FAILURE_FATAL=no)

ok: [dlabcpdtmdb1v] => (item=IPV6INIT=no)

ok: [dlabcpdtmdb1v] => (item=IPV6_AUTOCONF=no)

ok: [dlabcpdtmdb1v] => (item=IPV6_DEFROUTE=no)

ok: [dlabcpdtmdb1v] => (item=IPV6_PEERDNS=no)

ok: [dlabcpdtmdb1v] => (item=IPV6_PEERROUTES=no)

ok: [dlabcpdtmdb1v] => (item=IPV6_FAILURE_FATAL=no)

ok: [dlabcpdtmdb1v] => (item=NAME=eth2)

ok: [dlabcpdtmdb1v] => (item=DEVICE=eth2)

ok: [dlabcpdtmdb1v] => (item=ONBOOT=yes)

changed: [dlabcpdtmdb1v] => (item=IPADDR=dlabcpdtmdb1v)

ok: [dlabcpdtmdb1v] => (item=NETMASK=255.255.252.0)

PLAY RECAP ********************************************************

dlabcpdtmdb1v              : ok=4    changed=2    unreachable=0    failed=0

[root@dljdaprdqmc1v commvault]#

Regards

Pratap Bachu

[Kai Stian Olstad]

<snip />

> changed: [dlabcpdtmdb1v] => (item=IPADDR=dlabcpdtmdb1v)
> ok: [dlabcpdtmdb1v] => (item=NETMASK=255.255.252.0)

as you see IP becomes the hostname, since you need the content of the
variable with the same name as the host you need to use
vars/hostvars/lookup vars.

So {{ vars[ansible_hostname] }} would give you that, but vars is not a
documented feature that is schedule for removal.

So you are left with more unreadable code like

{{ hostvars[inventory_hostname][ansible_hostname] }}

or

{{ lookup('vars', ansible_hostname }}

--
Kai Stian Olstad

[Bachu Prathap]

Thanks a lot Kai Stian, it worked well.