#ansible-playbook -l host_subset playbook.yml
Make changes to just one server
ovi@work:~$ ansible open -a “free -m” -k
SSH password:
n1 | success | rc=0 >>
total used free shared buffers cached
Mem: 7942 6484 1457 10 235 4377
-/+ buffers/cache: 1871 6070
Swap: 4061 0 4061
work | success | rc=0 >>
total used free shared buffers cached
Mem: 16004 15845 159 0 33 14142
-/+ buffers/cache: 1668 14335
Swap: 8147 691 7456
use limit to make changes to just one server
ovi@work:~$ ansible open -a “free -m” -k –limit n1
SSH password:
n1 | success | rc=0 >>
total used free shared buffers cached
Mem: 7942 6484 1457 10 235 4377
-/+ buffers/cache: 1871 6070
Swap: 4061 0 4061
create a directory
ovi@work:~$ ansible open -m file -a “dest=/tmp/test mode=644 state=directory” -k
SSH password:
work | success >> {
“changed”: true,
“gid”: 1001,
“group”: “asix”,
“mode”: “0644”,
“owner”: “asix”,
“path”: “/tmp/test”,
“size”: 4096,
“state”: “directory”,
“uid”: 1001
}
n1 | success >> {
“changed”: true,
“gid”: 1001,
“group”: “asix”,
“mode”: “0644”,
“owner”: “asix”,
“path”: “/tmp/test”,
“size”: 4096,
“state”: “directory”,
“uid”: 1001
}
ovi@work:~$ ansible open -m stat -a “path=/etc/hosts” -k
SSH password:
n1 | success >> {
“changed”: false,
“stat”: {
“atime”: 1470711574.6343062,
“ctime”: 1469933973.2155738,
“dev”: 2049,
“exists”: true,
“gid”: 0,
“inode”: 62128485,
“isblk”: false,
“ischr”: false,
“isdir”: false,
“isfifo”: false,
“isgid”: false,
“islnk”: false,
“isreg”: true,
“issock”: false,
“isuid”: false,
“md5”: “8a22e2c2a4eb70dabb08c3527c5f8dfb”,
“mode”: “0644”,
“mtime”: 1469933973.2155738,
“nlink”: 1,
“pw_name”: “root”,
“rgrp”: true,
“roth”: true,
“rusr”: true,
“size”: 245,
“uid”: 0,
“wgrp”: false,
“woth”: false,
“wusr”: true,
“xgrp”: false,
“xoth”: false,
“xusr”: false
}
}
work | success >> {
“changed”: false,
“stat”: {
“atime”: 1470730625.26867,
“ctime”: 1467791669.1463304,
“dev”: 2049,
“exists”: true,
“gid”: 0,
“inode”: 45875357,
“isblk”: false,
“ischr”: false,
“isdir”: false,
“isfifo”: false,
“isgid”: false,
“islnk”: false,
“isreg”: true,
“issock”: false,
“isuid”: false,
“md5”: “f4abed992d2152fbb99e6c5a3bc4343d”,
“mode”: “0644”,
“mtime”: 1467791669.1463304,
“nlink”: 1,
“pw_name”: “root”,
“rgrp”: true,
“roth”: true,
“rusr”: true,
“size”: 238,
“uid”: 0,
“wgrp”: false,
“woth”: false,
“wusr”: true,
“xgrp”: false,
“xoth”: false,
“xusr”: false
}
}
[root@ip-172-..-126 ~]# ansible localhost -m setup | grep distribution
“ansible_distribution”: “Amazon”,
“ansible_distribution_major_version”: “NA”,
“ansible_distribution_release”: “NA”,
“ansible_distribution_version”: “2017.03”,
[root@ip-172-..-126 ~]# ansible localhost -m setup -a ‘filter=ansible_dist*’
localhost | SUCCESS => {
“ansible_facts”: {
“ansible_distribution”: “Amazon”,
“ansible_distribution_major_version”: “NA”,
“ansible_distribution_release”: “NA”,
“ansible_distribution_version”: “2017.03”
},
“changed”: false
}
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