1) Yaml file to
create an empty file
---
- hosts: host1
tasks:
- name : create file
file : path=/root/ansibl_test_file
state=touch
...
2) File to check ping
---
- hosts: host1
tasks:
- name:
test ping
ping:
...
3) Yaml file to
perform sync between folders
---
- hosts: host1
tasks:
- name: perform rync between folders
synchronize: src=/mnt/radio_prompts
dest=/mnt/
...
4) Compare the file in remote with template and
modify file if any changes
---
- hosts: host1
tasks:
- name: compare with template and modify
file if any changes
template:
src=/root/ymls/template/exports.jn2 dest=/etc/exports
...
5) Yaml file to add a
single user
---
- hosts: host1
tasks:
- name : add user and ensure present
user: name=lukman comment=test_user uid=500
...
6) To redirect remote server cat output to a file on master server
---
- hosts: ss
tasks:
- name: Sample play for a command
command: cat /etc/motd
register: mymotd
- name: redirect motd output to std out
debug: var=mymotd
- name: copy variable value to a file on a
local server
local_action: copy content="{{ mymotd
}}" dest="/home/bhr_moham607/ymls/l0210_motd"
Note : Local action is used to redirect to local master node and redirect the output in the remote server only use below syntax
..
7) To execute script from master and redirect output to remote server itself
...
# cat /home/bhr_moham607/ymls/roles/test/vars/main.yml
Note : Local action is used to redirect to local master node and redirect the output in the remote server only use below syntax
- name: copy variable value to a file on remote server
copy: content="{{ mymotd }}" dest=/home/bhr_moham607/ymls/l0210_motd..
7) To execute script from master and redirect output to remote server itself
---
- hosts: ss
tasks:
- name: use script module to execute local
script on remote
script:
/home/user/ymls/SERVER_INFO_OUTPUT_U.sh >
/home/user/ymls/one
...
8) To execute script from master and redirect output to Master server
Note: If the output of a variable is redirected to a file it is better to use .stdout for formatting
8) To execute script from master and redirect output to Master server
---
- hosts: ss
tasks:
- name: use script module to execute local
script on remote
script:
/home/bhr_moham607/ymls/SERVER_INFO_OUTPUT_U.sh
register: scoutput
- name: local copy
local_action: copy content="{{
scoutput.stdout }}" dest=/home/bhr_moham607/ymls/local_l0210
...
Note: If the output of a variable is redirected to a file it is better to use .stdout for formatting
8) Using Ansible fact's as variable
- name: create directory with ansible fact
file: dest=/home/bhr_moham607/ymls/testD/{{ ansible_hostname }} state=touch
..
9) Example for Command, register and Debug module
---
- hosts: ss
tasks:
- name: Sample play for a command
command: cat /etc/motd
register: mymotd
- name: redirect motd output to std out
debug: var=mymotd
10) Roles
a) Creating directory with the help of Roles
---
- hosts: ss
roles:
- { role: test }
---
- name: create directory
file: dest=/home/bhr_mohamXXX/ymls/testD state=directory
- name: touch file
file: dest=/home/bhr_mohamXXX/ymls/testD/testfile1 state=touch
...
[bhr_mohamXXX@l0202 tasks]$ pwd
/home/bhr_moham607/ymls/roles/test/tasks
---
dirname:
one:
two:
three:
cat /home/bhr_moham607/ymls/roles/test/tasks/main.yml
---
- name: create directory
file: dest=/home/bhr_moham607/ymls/testD state=directory
- name: touch file
file: dest=/home/bhr_moham607/ymls/testD/testfile1 state=touch
- name: create directroy from variable
file: dest=/home/bhr_moham607/ymls/testD/{{ item }} state=directory
with_items: "{{ dirname }}"
...
11) With_items: Create empty files
---
12) A Simple yaml file with when condition
---
- name: Create file when OS version is NOT 6
11) With_items: Create empty files
---
- hosts: ss
tasks:
- name: To
test and invoke with_items module and create file
file:
path=/home/bhr_moham607/{{item}} state=touch
with_items:
- test1
- test2
- test3
- test4
...12) A Simple yaml file with when condition
---
- hosts: ss
tasks:
- name:
Create file when OS version is 6
file:
path=/home/moham607/rhel6test state=touch
when:
facter_operatingsystemrelease == "6.8"
- name: Create file when OS version is NOT 6
file:
path=/home/moham607/rhelothertest state=touch
when:
facter_operatingsystemrelease != "6.8"
...
Above YAML will create file named rhel6test when the OS version is 6.8 when the OS version is NOT 6.8 then it will create a file named rhelothertest
13) When With AND, OR Condition
---
- hosts: ss
tasks:
- name: Create file when OS version is 6.8
and OS is Redhat
file:
path=/home/bhr_moham607/rhel6.8file state=touch
when:
- facter_operatingsystemrelease ==
"6.8"
- facter_osfamily ==
"RedHat"
- name: Create file when OS version is 6.8
and OS is not Readht
file: path=/home/bhr_moham607/otherostestfile
state=touch
when:
- facter_operatingsystemrelease ==
"6.8"
- facter_osfamily !=
"RedHat"
...
Note: And condition need to be mentioned like list items tasks or like below also
- name: Create file when OS version is 6.8 and OS is Redhat
file: path=/home/bhr_moham607/rhel6.8file state=touch
when: ( facter_operatingsystemrelease == "6.8" and facter_osfamily == "RedHat" )
Example for AND and OR condition
---
- hosts: ss
tasks:
- name: Create file when OS version is 6.8 and OS is Redhat
file: path=/home/bhr_moham607/Simpletestfile state=touch
when: ( facter_osfamily == "RedHat" and (facter_operatingsystemrelease == "6.8" or facter_operatingsystemrelease == "6.6"))
In the above Example OS should be Redhat but version can either 6.8 or 6.6 in version any of the condtion has to be true and OS has true then in that case it will create a file called Simpletestfile
14) When condition with filter option
- name: Create file when OS version is 6.8 and OS is not Readht
file: path=/home/bhr_moham607/otherostestfile state=touch
when: ( facter_operatingsystemrelease|int >= 6 )
- name: Create file when OS version is 6.8 and OS is not Readht
file: path=/home/bhr_moham607/otherostestfile state=touch
when: ( facter_operatingsystemrelease|int >= 6 )
In the above example task will create a file when the OS releease is greater than 6
Note : using this filter method we can't compare folating point values. Like eg: 6.8
15) Testing when and with item
---
skipping: [l0210] => (item=0)
skipping: [l0210] => (item=2)
skipping: [l0210] => (item=4)
ok: [ansic1] => (item=6) => {
"item": 6,
"msg": 6
}
ok: [ansic1] => (item=8) => {
"item": 8,
"msg": 8
}
ok: [ansic1] => (item=10) => {
"item": 10,
"msg": 10
}
16) Ansible lineinfile Syntax
16) failed_when Syntax
Mandatory
Note : using this filter method we can't compare folating point values. Like eg: 6.8
15) Testing when and with item
---
- hosts: ss
tasks:
- name: check when and with item
debug: msg={{ item }}
with_items: [ 0, 2, 4, 6, 8, 10 ]
when: item > 5
...skipping: [l0210] => (item=0)
skipping: [l0210] => (item=2)
skipping: [l0210] => (item=4)
ok: [ansic1] => (item=6) => {
"item": 6,
"msg": 6
}
ok: [ansic1] => (item=8) => {
"item": 8,
"msg": 8
}
ok: [ansic1] => (item=10) => {
"item": 10,
"msg": 10
}
Debug command will be executed only when the item value is greater than 5. We can see the difference in the above output.
Note : using this filter method we can't compare floating point values. Like eg: 6.8
when with Custom Facts
tasks:
- name: Check value from custom fact and
create a file
file: path=/home/moham607/factright
state=touch
when:
ansible_local.serverinfo.info.servertype == "vm-esx5"
As like normal facts comparision we can use custom facts also to compare with When and execute as per result.
16) Ansible lineinfile Syntax
---
- hosts: test
tasks:
- name: To check
lineinfile syntax
lineinfile:
name="/root/ymls/testlnfile" state=present regexp='i love' line='i
love india'
...
The regular expression to look for in every line of
the file. For state=present, the pattern to replace if found; only the last
line found will be replaced. For state=absent, the pattern of the line to
remove. Uses
Python regular expressions; see
Before Running
[root@ansic1 ymls]# cat /root/ymls/testlnfile
i love
i love ece
i love briyani
i love IT
After running 1st time
[root@ansic1 ymls]# cat /root/ymls/testlnfile
i love
i love ece
i love briyani
i love india
After running 2nd time
[root@ansic1 ymls]# cat /root/ymls/testlnfile
i love
i love ece
i love briyani
i love india
16) failed_when Syntax
---
- hosts: ss
tasks:
- name: check failed when
command: rm /tmp/file1
register: testoutput
failed_when: "'Operation not
permitted' in testoutput.stderr"
- name:
command: echo
hi
...
17) ipfilter
---
- hosts: ss
tasks:
- name: Take the IP of server using facts
and check with the help of IP filter and print
debug: var="IP address of server is
({{facter_fqdn}} | type_debug)"
# when: facter_fqdn
# when: (ansible_eth3.ipv4.address | ipv4)
...
Mandatory
---
- hosts: ss
tasks:
- name: Check Mandotry filter setting
debug: msg={{ variable | mandatory }}
...
18) Replace module example
18) Replace module example
---
- hosts: test
tasks:
- name: Testting
replace module
copy:
src=/etc/passwd dest=/root/TEST_PASSWD
- name: use
replace module to find and replace bash
replace:
dest=/root/TEST_PASSWD regexp='/bin/bash' replace='/sbin/nologin' backup=yes
...
19) Replace with validate option
replace with validate will update option will update the file only if the Syntax is correct. In below example replace will search # and replace with test and checks the syntax with validate option. Only if the syntax is OK changes from file in tmp will be updated to the original file
19) Replace with validate option
replace with validate will update option will update the file only if the Syntax is correct. In below example replace will search # and replace with test and checks the syntax with validate option. Only if the syntax is OK changes from file in tmp will be updated to the original file
---
- hosts: ss
tasks:
- replace:
dest: /home/bhr_moham607/sudoers
regexp: '#'
replace: 'Test'
backup: yes
validate: '/usr/sbin/visudo -cf %s'
...
No comments:
Post a Comment