Ansible to print ps on new row of csv file - linux

Newbie ansible user here.
I'm trying to print output of ps into csv file but somehow its printing on next column rather than next row.
This is my playbook xml:
- name: Write running process into a csv file
hosts: servers
gather_facts: yes
vars:
output_path: "./reports/"
filename: "process_{{ date }}.csv"
tasks:
- name: CSV - Generate output filename
set_fact: date="{{lookup('pipe','date +%Y%m%d%H%M%S')}}"
run_once: true
- name: CSV - Create file and set the header
lineinfile:
dest: "{{ output_path }}/{{ filename }}"
line:
PID,Started,CPU,Memory,User,Process
create: yes
state: present
delegate_to: localhost
- name: CSV - Get ps cpu
ansible.builtin.shell:
ps -e -o %p, -o lstart -o ,%C, -o %mem -o user, -o %c --no-header
register: ps
- name: CSV - Write into csv file
lineinfile:
insertafter: EOF
dest: "{{ output_path }}/{{ filename }}"
line: "{inventory_hostname}},{{ps.stdout_lines}}"
loop: "{{ ps.stdout_lines }}"
delegate_to: localhost
- name: CSV - Blank lines removal
lineinfile:
path: "./{{ output_path }}/{{ filename }}"
state: absent
regex: '^\s*$'
delegate_to: localhost
current output is like
Example of desired output :

... but somehow its printing on next column rather than next row ... current output is like ...
This is because within your task "CSV - Write into CSV file" you are printing out all stdout_lines for each iteration steps instead of one, the line for the iteration step only.
To print out line by line one could use an approach like
---
- hosts: localhost
become: false
gather_facts: false
tasks:
- name: CSV - Get ps cpu
shell:
cmd: ps -e -o %p, -o lstart -o ,%C, -o %mem -o user, -o %c --no-header
register: ps
- name: Show 'stdout_lines' one line per iteration for CSV
debug:
msg: "{{ inventory_hostname }}, {{ ps.stdout_lines[item | int] }}"
loop: "{{ range(0, ps.stdout_lines | length) | list }}"

Related

Ansible - Find files via a list with their name and delete them

im currently running into an issue with deleting certain files from our thumbor cache with ansible. After alot of snipping I receive a list with the file names and im running following ansible task to find and delete them:
shell: find . -name {{ item }} -exec rm "{}" \;
args:
chdir: "{{ thumbor_data_path }}"
ignore_errors: true
loop:
- deletion_hash
when: file_url is defined and deletion_hash | length > 0
the list is definitly filled with the correct names of files I know exist and the task itself marks himself as changed, but the files are not getting deleted. The names of the files are sha1 hashes, and are two directories deep.
Is there something wrong with the shell script?
Example of the deletion_hash list:
"msg": [
"115b744b9f6b23bbad3b6181c858cb953136",
"f52f17b2cca937e5586751ff2e938979890b",
"1c39661a0925b3cdb3b524983aaf6cccd6ee",
"1afc79a9e0e3c07ff0e95e1af3b5cb7ae54c",
"424e9159fe652f47c8e01d0aa85a86fbefed",
"11e4994789f24537d6feea085d2bf39c355b",
"a1d2fe0e122d37555df4062d4c0a5d10b651",
"aef976fc897a87091be5a8d5a11698e19591",
"e79f3ee1e6ccb3caff288b0028e031d75d77",
"9448e5e49679c908263922debdffff68eecb",
"a3933be52277a341906751c3da2dfb07ccd8",
"bef3370862a7504f7857be396d5a3139f5c0",
"8cc0cbe847234af96c0463d49c258c85d50f",
"1e7bf6110dcf994d1270682939e14416fc6e",
"d21dae2c047895129e7c462f6ddc4e512a58",
"c107b29b3185171ec46b479352fab6c97ad2"
]
You can try using the file module; this comes with an assumption that the thumbor_data_path variable does not end with a /; if it does, you need to modify this a bit.
- name: Remove file (delete file)
ansible.builtin.file:
path: "{{ thumbor_data_path }}/{{ item }}"
state: absent
loop: deletion_hash
when: file_url is defined and deletion_hash | length > 0

Using Split and join together in Ansible template file

I want to use hostnames of a group in ansible inventory in a template bash script file.
This is my inventory:
[group_srv]
srv1.co.company
srv2.co.company
srv3.co.company
This is that I wrote in script.sh.j2
for i in '{{ groups['group_srv'][0:3].split('.')[0] | join(' ') }}' ; do
echo $i
done
This is my desired output, but I cannot use split() and join() together.
for i in 'srv1' 'srv2' 'srv3'; do
echo $i
done
Any help is appreciated.
Ansible provides a magic variable containing the short name for each server in your inventory (i.e. the first string before the first dot): inventory_hostname_short
You can access all servers vars in an other magic var: hostvars
You can use the map filter to:
extract values for a list of keys inside a dict (e.g. the relevant hosts for your group in hostvars)
select a single key in a list of dictionaries (e.g. the short inventory name in each extracted server vars).
Those two operations can actually be done at once at extraction time.
Putting it all together:
for i in '{{ groups['group_srv'] | map('extract', hostvars) | map(attribute='inventory_hostname_short') | join("' '") }}' ; do
echo $i
done
Which can be shortened as
for i in '{{ groups['group_srv'] | map('extract', hostvars, 'inventory_hostname_short') | join("' '") }}' ; do
echo $i
done
The declaration below does the job
short_0_3: "{{ groups.group_srv[0:3]|
map('split', '.')|
map('first')|
join(' ') }}"
The next option is the extraction of the variable inventory_hostname_short
short_0_3: "{{ groups.group_srv[0:3]|
map('extract', hostvars, 'inventory_hostname_short')|
join(' ') }}"
Both options give
short_0_3: srv1 srv2 srv3
Example of a complete playbook for testing
- hosts: all
gather_facts: false
vars:
short_0_3: "{{ groups.group_srv[0:3]|
map('split', '.')|
map('first')|
join(' ') }}"
tasks:
- block:
- shell: "for i in {{ short_0_3 }}; do echo $i; done"
register: out
- debug:
var: out.stdout_lines
delegate_to: localhost
run_once: true
shell> cat hosts
[group_srv]
srv1.co.company
srv2.co.company
srv3.co.company
srv4.co.company
srv5.co.company
In Jinja2 loop you can use filters.
{% if not loop.last %} {% endif %} adds a white space after every element except the last one.
for i in {% for host in groups['group_srv'] %}'{{ host.split('.')[0] }}'{% if not loop.last %} {% endif %}{% endfor %} ; do
echo $i
done
Result:
for i in 'test-001' 'test-002' ; do
echo $i
done

Ansible "nsupdate" module adding zone to record value

I'm trying to use the nsupdate module to update records but I'm having mixed success. While the records do get added, I'm getting the zone appended at the end of the value.
For example:
I want a cname called mycname.domain1.com pointed to shawarmas.domain2.com. After I run the playbook I end up with an entry that looks like this:
mycname.domain1.com. 5 IN CNAME shawarmas.domain2.com.domain1.com
Is there something wrong in my playbook that is causing this?
Playbook:
---
- hosts: myserver
tasks:
- debug:
msg: "{{ value }}"
- name: "Add record to escapia zone"
nsupdate:
key_name: "ddns"
key_secret: "******"
server: "dnsserver"
record: "{{ record }}"
type: "{{ type }}"
value: "{{ value }}"
ttl: 5
Run Command:
ansible-playbook -i inv -e "record=record-test.example.com.
type=CNAME value=test.different.com" exampledns.yml -v
Ansible output:
changed: [myserver] => changed=true
dns_rc: 0
dns_rc_str: NOERROR
record:
record: record-test.example.com.
ttl: 5
type: CNAME
value:
- test.different.com
zone: example.com.
DNS result:
;; ANSWER SECTION:
record-test.example.com. 5 IN CNAME test.different.com.example.com
Usually, you need to append a . to the end of the value to make it full qualified. Without the . it is unqualified and appending the zone.
Try with:
ansible-playbook -i inv -e "record=record-test.example.com. type=CNAME value=test.different.com." exampledns.yml -v

Is there a way to use if..else logic in conditional filters in ansible?

I want to hard code 2 different values based on variable stdout in a single play.If a service is running then i want to hard code value as good else bad.How to use this logic in ansible?
I can able to hard code one value based on status result.
---
- hosts: localhost
connection: local
gather_facts: false
vars:
tasks:
- name: load var from file
include_vars:
file: /tmp/var.json
name: imported_var
- name: Checking mysqld status
shell: service mysqld status
register: mysqld_stat
- name: Checking mysqld status
shell: service httpd status
register: httpd_stat
- name: append more key/values
set_fact:
imported_var: "{{ imported_var| default([]) | combine({ 'mysqld_status': 'good' })}}"
when: mysqld_stat.rc == 0
- name: append more key/values
set_fact:
imported_var: "{{ imported_var| default([]) | combine({ 'httpd_status': 'good' })}}"
when: httpd_stat.rc == 0
- name: write var to file
copy:
content: "{{ imported_var | to_nice_json }}"
dest: /tmp/final.json
I want to hard code mysqld_status : Good if mysqld_stat.rc == 0 or mysqld-status: Bad if mysqld_stat.rc != 0.Is it possible to achieve in single play.(i.e) in single command
There are many of ways of approaching this problem. You could just add a second set_fact that runs when mysqld_stat.rc != 0. In the following example, only one of the two set_fact tasks will run:
- name: append more key/values
set_fact:
imported_var: "{{ imported_var| default({}) | combine({ 'mysqld_status': 'good' })}}"
when: mysqld_stat.rc == 0
- name: append more key/values
set_fact:
imported_var: "{{ imported_var| default({}) | combine({ 'mysqld_status': 'bad' })}}"
when: mysqld_stat.rc != 0
You could instead use Ansible's ternary filter:
- name: append more key/values
set_fact:
imported_var: "{{ imported_var| default({}) | combine({ 'mysqld_status': (mysqld_stat.rc == 0)|ternary('good', 'bad') })}}"

Ansible > file compare with stat module: Need to check file has the same value or not

There is a file: test.txt on remote1 and remote2 which has version with date and these file contains are n't fixed.
$ cat test.txt
Release_P1.11_2017-08-02-094316
02/08/2017
I need to check:
if file contains are same, then move on further tasks.
if file contains are not same, then stop the tasks.
---
- name: latest file check
stat:
path: /tmp/test.txt
get_checksum: yes
register: test_file_check
- debug:
var: test_file_check.stat.checksum
Now if file contains are same, checksum value are equal otherwise it doesn't have same. but I don't figure out the solution.
All you need is second time check and when condition
- hosts: remote_1
tasks:
- name: first file check
stat:
path: /tmp/test.txt
get_checksum: yes
register: test_file_check_1
...........................................
- hosts: remote_2
tasks:
- name: next check
stat:
path: /tmp/test.txt
get_checksum: yes
register: test_file_check_2
...........................................
- name: Block run only if file has no changes
command: /bin/true
when: test_file_check_1.stat.checksum == test_file_check_2.stat.checksum
http://docs.ansible.com/ansible/latest/playbooks_conditionals.html

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