I want to check the service exists in the terminal host.
So, I just did the playbook as below.
---
- hosts: '{{ host }}'
become: yes
vars:
servicename:
tasks:
- name: Check if Service Exists
stat: 'path=/etc/init.d/{{ servicename }}'
register: servicestatus
with_items: '{{ servicename }}'
- name: Show service service status
debug:
msg: '{{ servicename }} is exists.'
with_items: '{{ servicename }}'
when: servicestatus.stat.exists
Then, I try to execute this playbook to my host that was running Nginx already as below.
ansible-playbook cheknginxservice.yml -i /etc/ansible/hosts -e 'host=hostname' -e 'servicename=nginx'
And I got the error like this.
FAILED! => {"failed": true, "msg": "The conditional check 'servicestatus.stat.exists' failed. The error was: error while evaluating conditional (servicestatus.stat.exists): 'dict object' has no attribute 'stat'\n\nThe error appears to have been in '/home/centos/cheknginxservice.yml': line 13, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n with_items: '{{ servicename }}'\n - name: Show service servicestatus\n ^ here\n"}
to retry, use: --limit #/home/centos/cheknginxservice.retry
So, I think the problem is about stat module when using the condition involved.
Why are you using with_items? You plan to pass multiple services? It matters because the results will be a list if you use with_items. Just remove with_items and it will work. If you want to pass multiple services, then you have to loop through with_items and use item instead of servicename.
- name: Check if Service Exists
stat: 'path=/etc/init.d/{{ servicename }}'
register: servicestatus
- name: Show service service status
debug:
msg: '{{ servicename }} is exists.'
when: servicestatus.stat.exists
There is no native way in Ansible to check the status of a service. You can use the shell module. Notice I used sudo. Your case may be different.
- name: check for service status
shell: sudo service {{ servicename }} status
ignore_errors: true
register: servicestatus
- name: Show service service status
debug:
msg: '{{ servicename }} exists.'
when: servicestatus.rc | int == 0
Related
We switched to ansible 2.10
Before it was azure_rm_networkinterface_facts (working) now is azure_rm_networkinterface_info
- name: "Get facts for network interface by it's name"
azure_rm_networkinterface_facts:
resource_group: "{{ target_resourcegroup }}"
name: "{{ target_nic_name }}"
- name: "Define private IP address"
set_fact:
private_ip_address: "{{ ansible_facts | json_query(query) }}"
vars:
query: "azure_networkinterfaces[0].properties.ipConfigurations[0].properties.privateIPAddress"
when: azure_networkinterfaces|length > 0
Error I get is:
4 TASK [azure_preconditions : Define private IP address] *************************
00:01:38.844 [0;31mfatal: [40.118.86.58]: FAILED! => {"msg": "The conditional check 'azure_networkinterfaces|length > 0' failed. The error was: error while evaluating conditional (azure_networkinterfaces|length > 0): 'azure_networkinterfaces' is undefined\n\nThe error appears to be in '/var/lib/jenkins/workspace/PA-28544-ansible-version-upgrade/roles/azure_preconditions/tasks/main.yml': line 143, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: \"Define private IP address\"\n ^ here\n"}[0m
00:01:38.844
azure_networkinterfaces seems to be a return value of azure_rm_networkinterface_facts so it's normal that it doesn't exist...
I'd write a playbook like this:
- name: "Get facts for network interface by it's name"
azure_rm_networkinterface_facts:
resource_group: "{{ target_resourcegroup }}"
name: "{{ target_nic_name }}"
register: output
I suggest you debug the output variable to check your return values. I don't know the version of Azure you are using and a lot of changes can exist depending on it.
- name: "Display return value"
debug:
msg: "{{ output }}"
You could play with output.azure_networkinterfaces or output.networkinterfaces
Following the last documentation, its seems azure_rm_networkinterface_fact is deprecated, replaced by azure_rm_networkinterface_info
azure_rm_networkinterface_info
I'm new to Ansible and trying to get a service state where the service name is dynamic and set by set_fact before in the playbook.
How can you build a variable within another variable?
I wish I could use something like that to display my service state :
{{ ansible_facts.services['{{ servicename }}'].state }}
But well it doesn't work.
So I tried this way with vars :
- name: set service name
ansible.builtin.set_fact:
servicename: "'myservice'"
when: ansible_distribution_major_version == "7"
- name: print service state
debug: msg={{ vars['ansible_facts.services[' + servicename + '].state'] }}
vars:
servicename: "{{ servicename }}"
I got the following error :
fatal: [myhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute u\"ansible_facts.services['myservice'].state\"\n\nThe error appears to be in '/etc/ansible/playbook/myplaybook.yaml': line 20, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: print service state\n ^ here\n"}
When the following works just fine :
- name: print service state
debug:
msg: "{{ ansible_facts.services['myservice'].state }}"
Inside a {{ … }} block, you can access the variables directly. And from my point of view, you can leave the ansible_facts out, as well as the variable assignment in the second task.
This will do what you want (and as Zeitounator already wrote):
- hosts: localhost
vars:
services:
myservice:
state: foo
tasks:
- name: set service name
ansible.builtin.set_fact:
servicename: "myservice"
- name: print service state
debug:
msg: "{{ services[servicename].state }}"
I'm trying to create a series of firewalld rules using a variable imported from a yaml file. The yaml file creates a dictionary of service names and the associated ports are a list within each item. A segment of the yaml looks like this:
---
myservice:
description: My service desc
ports:
- 1234/tcp
- 1235/tcp
another:
description: Another service
ports:
- 2222/tcp
- 3333/tcp
The Ansible role I have so far is:
- name: Read services from file
include_vars:
file: "services.yml"
name: services
- name: Create firewalld services
command: >
firewall-cmd --permanent
--new-service={{ item.key }}
--set-description="{{ item.value.description }}"
register: addserv
failed_when: addserv.rc != 26 and addserv.rc != 0
changed_when: not "NAME_CONFLICT" in addserv.stderr
with_dict: "{{ services }}"
- name: Add ports to firewalld service
command: >
firewall-cmd --permanent
--service={{ item.key }} --add-port={{ item.value.ports }}
register: addport
changed_when: not "ALREADY_ENABLED" in addport.stderr
The first segment to create the firewalld service works fine but I'm stumped on the second part with how to loop over the list of ports while retaining the dictionary key. I've tried using subelements to extract the ports list and that works but I can't figure out how to retain the service name from the key.
Use subelements. For example
- debug:
msg: "{{ item.0.key }} - {{ item.0.value.description }} - {{ item.1 }}"
with_subelements:
- "{{ services|dict2items }}"
- value.ports
gives
"msg": "myservice - My service desc - 1234/tcp"
"msg": "myservice - My service desc - 1235/tcp"
"msg": "another - Another service - 2222/tcp"
"msg": "another - Another service - 3333/tcp"
I am using Ansible and trying to make a simple playbook to check if a service is up.
service... account-daemon.service
part of my playbook which included this is as follows:
- name account daemon service get status
command: systemctl show -p SubState account-daemon
register: status
- debug: msg="{{ status.stout }}"
Please note there is no spaces between playbook.
You can use as below to check the status of services, example below for rscd
- name: populate service facts
service_facts:
- debug:
var: ansible_facts.services
- debug:
msg: "service is running"
when: ansible_facts.services['account-daemon.service'].state == "running"
Output:
ok: [localhost] => {
"msg": "service is running"
}
Reference: https://docs.ansible.com/ansible/latest/modules/service_facts_module.html
Edit:
- name: check rscd
stat:
path: /etc/init.d/rscd
register: serv
- name: populate service facts
service_facts:
- debug:
var: ansible_facts.services
- debug:
msg: "rscd is running"
when: serv.stat.exists and ansible_facts.services['rscd.service'].state == "running"
I am iterating over yml file and filtering and keeping those microservice metadata in the list which is in the command line argument passed
ansible-playbook -i inventory/inventory sp-deployer.yml --ask-vault-pass --extra-vars '{"microservices_list":[iwan,csrservice]}'
Finally I need these three value from the yml file based on the criteria mentioned above. I have created ansible sp-deployer.yml for this purpose. I have used set_facts for creating dynamic list. First list works fine but the moment I create second one it fails.
name: "ms_service"
port: "830"
streams: "noti,jk-noti"
vars.yml
version: 1
name: user
jobs:
ns1:
ip: "1.1.1.1"
ns_version: "4.2"
f_packs:
- f-pack-1:
name: "pack1"
microservices:
- microservice-1:
name: "ms_service"
port: "830"
streams: "noti,jk-noti"
- microservice-2:
name: "ms_service1"
port: "830"
streams: "noti1,jk-noti1"
- f-pack-2:
name: "pack4"
microservices:
- microservice-1:
name: "ms_service3"
port: "830"
streams: "noti,jk-noti3"
- microservice-2:
name: "ms_service4"
port: "830"
streams: "noti,jk-noti4"
- microservice-3:
name: "ms_service5"
port: "830"
streams: "noti,jk-noti5"
Script:sp-deployer.yml
---
- hosts: localhost
vars_files:
- ./vars.yml
sudo: yes
tasks:
- name: Reading vars.yml file and preparing list of microservice with its metadata
set_fact: foo_item="{{ item.1 }}"
register: result
with_subelements:
- "{{ jobs.ns1.f_packs }}" ###item.0
- microservices ###item.1
- name: make first list
set_fact: foo="{{ result.results | map(attribute='ansible_facts.foo_item') | list }}"
- name: print register
debug: msg="{{ item }}" verbosity=3
with_items:
- "{{ foo }}"
- name: Filtering micro service list with match found from command line input
when: item[0].name == item[1]
set_fact: foo_item1="{{ item.0 }}"
register: result_final
with_nested:
- "{{ foo }}"
- "{{ microservices_list }}"
- name: make a list
set_fact: foo1="{{ result_final.results | map(attribute='ansible_facts.foo_item1') | list }}"
ERROR
TASK [make a list] *************************************************************
fatal: [localhost]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'dict object' has no attribute 'ansible_facts'\n\nThe error appears to have been in '/home/user/ansible/sp-deployer1.yml': line 40, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: make a list\n ^ here\n"}
to retry, use: --limit #/home/user/ansible/sp-deployer1.retry
PLAY RECAP *********************************************************************
localhost : ok=4 changed=0 unreachable=0 failed=1
Friendly advice: always check registered variables with debug if you bump on such errors.
The reason for your error is that set_fact don't yield ansible_facts dict if the loop iteration is skipped.
And I see you have when statement in your loop.
To overcome this error, you should select only those loop iterations, that have ansible_facts dict defined:
- name: make a list
set_fact: foo1="{{ result_final.results | selectattr('ansible_facts','defined') | map(attribute='ansible_facts.foo_item1') | list }}"