Ansible – More Modules and Commands

In this article we will see a more in-depth uses of the Ansible command using the Same hosts file.

Ping the Local Machine

[root@vx111a docker]# ansible all -i 'localhost,' -c local -m ping

localhost | success >> {

    "changed": false,

    "ping": "pong"

}

List all the Hosts Defined in the Inventory File

[root@vx111a docker]# ansible -i hosts all --list-hosts

    172.16.202.96

Execute a Command on the Remote Machine defined in the Hosts File

[root@vx111a docker]# ansible -i hosts all  -m shell -a "uptime" --user vagrant

172.16.202.96 | success | rc=0 >>

 15:41:20 up 4 days,  5:10,  1 user,  load average: 0.00, 0.00, 0.00

Execute the Command on the Local machine

[root@vx111a docker]# ansible all -i 'localhost,' -c local -m shell -a "uptime"

localhost | success | rc=0 >>

 20:21:00 up 13 days, 15 min,  4 users,  load average: 0.22, 0.14, 0.14

Copy a File

[root@vx111a docker]# ansible -i hosts all -m copy -a "src=/work/docker/Dockerfile dest=/tmp" --user vagrant

172.16.202.96 | success >> {

    "changed": true,

    "checksum": "591af5f15567c89b7ebcaf4e7d9ca4657ea63135",

    "dest": "/tmp/Dockerfile",

    "gid": 500,

    "group": "vagrant",

    "md5sum": "2ec05713f50f4c2026aa514329111722",

    "mode": "0664",

    "owner": "vagrant",

    "size": 132,

    "src": "/home/vagrant/.ansible/tmp/ansible-tmp-1453200901.47-275728752624352/source",

    "state": "file",

    "uid": 500

}

Set File Permissions

[root@vx111a docker]# ansible -i hosts all -m file -a "dest=/tmp/Dockerfile mode=664" --user vagrant

172.16.202.96 | success >> {

    "changed": false,

    "gid": 500,

    "group": "vagrant",

    "mode": "0664",

    "owner": "vagrant",

    "path": "/tmp/Dockerfile",

    "size": 132,

    "state": "file",

    "uid": 500

}

Create a Directory

[root@vx111a docker]# ansible -i hosts all -m file -a "dest=/tmp/pump mode=755 state=directory" --user vagrant

172.16.202.96 | success >> {

    "changed": true,

    "gid": 500,

    "group": "vagrant",

    "mode": "0755",

    "owner": "vagrant",

    "path": "/tmp/pump",

    "size": 4096,

    "state": "directory",

    "uid": 500

}

Delete a Directory

[root@vx111a docker]# ansible -i hosts all -m file -a "dest=/tmp/pump state=absent" --user vagrant

172.16.202.96 | success >> {

    "changed": true,

    "path": "/tmp/pump",

    "state": "absent"

}

Get Package Status

[root@vx111a docker]# ansible -i hosts all -m yum -a "name=wget state=present" --user vagrant

172.16.202.96 | success >> {

    "changed": false,

    "msg": "",

    "rc": 0,

    "results": [

        "wget-1.12-1.4.el6.x86_64 providing wget is already installed"

    ]

}

Get Service Status

[root@vx111a docker]# ansible -i hosts all -m service -a "name=auditd state=started" --user vagrant

172.16.202.96 | success >> {

    "changed": false,

    "name": "auditd",

    "state": "started"

}

Setup – One of the very use-full commands that we use mostly is to get the details of the machine. Setup is one such module which will allow to get all details like env variables , memory configurations etc on a remote machine. In order to get these details on the local machine we can use

[root@vx111a docker]# ansible all -i 'localhost,' -c local -m setup

More to Come, Happy Learning