ansible -how to pickup hostname and create self signed certificate

Question

i have working command for creating self signed certificate for IHS server's .kdb file and i was trying to use the same command through ansible. Here my aim is that ansible should detect the hostname of application servers and should use that name for the "-dn" of the command. Below is the working command

[root@myhost bin]# ./gskcmd -cert -create -db /opt/myapp/key.kdb -label IHS -expire 3650 -size 2048 -dn "CN=myserverFQDN" -default_cert yes -pw password

but below is my play and its giving syntax error

tasks:
  - name: get hostname
    shell: echo $HOSTNAME
    register: hostname

  - name: create self signed certificate for IHS
    command: /opt/myapp/bin/gskcmd -cert -create -db /opt/myapp/key.kdb -label IHS -expire 3650 -size 2048 -dn "CN={{ hostname}}" -default_cert yes -pw password

Actually posting the complete and error message (at a suitable debug level and preferably as code but even screenshot would help) is usually a good thing. - Is the hostname what you need (and not the FQDN)? Why don't you use `{{ ansible_hostname }}` instead of running a shell command to determine the hostname? — HBruijn, Nov 27 '18 at 15:14

Michael Hampton · Accepted Answer · 2018-11-27T16:27:28.917

You don't need to echo anything to "get" the hostname. It's already one of Ansible's gathered facts, ansible_nodename. You just need to use it.

    command: /opt/myapp/bin/gskcmd -cert -create -db /opt/myapp/key.kdb -label IHS -expire 3650 -size 2048 -dn "CN={{ansible_nodename}}" -default_cert yes -pw password

Depending on what you are doing, you may need to use one of the alternate facts, ansible_hostname or inventory_hostname.

These variables are set as follows:

inventory_hostname is the hostname as it is set in your Ansible inventory. For example www.internal-name.example.
ansible_hostname is the unqualified hostname as reported by the system. For example www.
ansible_nodename is the fully qualified hostname as reported by the system. For example www.example.com.

Thanks Hello Michael.. It worked like a magic... Appreciated your help — Vowner, Nov 28 '18 at 06:44

ansible -how to pickup hostname and create self signed certificate

1 Answers1