Ansible Executing Nested Variable Loops on Multiple Files - ansible

Question

I want to perform the following command using an Ansible playbook:
sed -i.bak 's/^mirror/#mirror/;s/#baseurl/baseurl/;s/mirror.centos/vault.centos/' /etc/yum.repos.d/CentOS-*.repo
A basic working Ansible playbook looks like this:
---
- name: Resolve any CentOS issues
hosts: "{{ nodes }}"
tasks:
- shell: sed -i.bak 's/^mirror/#mirror/;s/#baseurl/baseurl/;s/mirror.centos/vault.centos/' /opt/yum.repos.d/CentOS-*.repo
However, I would like to create a more advanced playbook, which *might *look something like this:
---
- name: Modify CentOS Reps
hosts: localhost
vars:
filelist: []
reg:
- ^mirrorlist
- ^#baseurl
- mirror.centos
rep:
- #mirror
- baseurl
- vault.centos
tasks:
- name: Find matching repo files and register to a variable
find:
paths: /etc/yum.repos.d
file_type: file
recurse: no
patterns: CentOS-*.repo
register: output
- name: Adding filelist to the LIST
no_log: true
set_fact:
filelist: "{{ filelist + [item.path]}}"
with_items: "{{ output.files }}"
- debug: var=filelist
- name: Change the lines
replace:
path: "{{ item.0 }}"
regexp: "{{ item.1.regexp }}"
replace: "{{ item.1.replace }}"
backup: true
with_nested:
- "{{ filelist }}"
- '{ regexp: "{{ reg }}", replace: "{{ rep }}" }'
The above gives the following attribute error:
fatal: [localhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'ansible.utils.unsafe_proxy.AnsibleUnsafeText object' has no attribute 'regexp'\n\nThe error appears to be in '/etc/ansible/playbooks/centos-correct-repo301.yml': line 33, column 6, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: Change the lines\n ^ here\n"}
Any thoughts?
Thanks

Answer 1

There are more options. For example,
Put the regex/replace logic into a dictionary
reg_rep:
- {reg: '^mirror', rep: '#mirror'}
- {reg: '^#baseurl', rep: 'baseurl'}
- {reg: 'mirror.centos', rep: 'vault.centos'}
Declare the list of the files
filelist: "{{ output.files|map(attribute='path')|list }}"
and find the files (no changes to your code in this task)
- name: Find matching repo files and register to a variable
find:
paths: /etc/yum.repos.d
file_type: file
recurse: no
patterns: CentOS-*.repo
register: output
Update the configuration
- name: Change the lines
replace:
path: "{{ item.0 }}"
regexp: "{{ item.1.reg }}"
replace: "{{ item.1.rep }}"
backup: true
with_nested:
- "{{ filelist }}"
- "{{ reg_rep }}"
loop_control:
label: "{{ item.0|basename }}"
Example of a complete playbook for testing
shell> cat pb.yml
- hosts: test_24
vars:
reg_rep:
- {reg: '^mirror', rep: '#mirror'}
- {reg: '^#baseurl', rep: 'baseurl'}
- {reg: 'mirror.centos', rep: 'vault.centos'}
filelist: "{{ output.files|map(attribute='path')|list }}"
tasks:
- name: Find matching repo files and register to a variable
find:
paths: /etc/yum.repos.d
file_type: file
recurse: no
patterns: CentOS-*.repo
register: output
- debug:
var: filelist
- debug:
msg: |
path: "{{ item.0 }}"
regexp: "{{ item.1.reg }}"
replace: "{{ item.1.rep }}"
backup: true
with_nested:
- "{{ filelist }}"
- "{{ reg_rep }}"
loop_control:
label: "{{ item.0|basename }}"
when: debug|d(false)|bool
- name: Change the lines
replace:
path: "{{ item.0 }}"
regexp: "{{ item.1.reg }}"
replace: "{{ item.1.rep }}"
backup: true
with_nested:
- "{{ filelist }}"
- "{{ reg_rep }}"
loop_control:
label: "{{ item.0|basename }}"
gives abridged, running in --check --diff mode
shell> ansible-playbook pb.yml -CD
PLAY [test_24] *******************************************************************************
TASK [Find matching repo files and register to a variable] ***********************************
ok: [test_24]
TASK [debug] *********************************************************************************
ok: [test_24] =>
filelist:
- /etc/yum.repos.d/CentOS-Linux-ContinuousRelease.repo
- /etc/yum.repos.d/CentOS-Linux-Debuginfo.repo
- /etc/yum.repos.d/CentOS-Linux-Devel.repo
- /etc/yum.repos.d/CentOS-Linux-Extras.repo
- /etc/yum.repos.d/CentOS-Linux-FastTrack.repo
- /etc/yum.repos.d/CentOS-Linux-HighAvailability.repo
- /etc/yum.repos.d/CentOS-Linux-Media.repo
- /etc/yum.repos.d/CentOS-Linux-Plus.repo
- /etc/yum.repos.d/CentOS-Linux-PowerTools.repo
- /etc/yum.repos.d/CentOS-Linux-Sources.repo
- /etc/yum.repos.d/CentOS-Linux-BaseOS.repo
- /etc/yum.repos.d/CentOS-Linux-AppStream.repo
TASK [debug] *********************************************************************************
skipping: [test_24] => (item=CentOS-Linux-ContinuousRelease.repo)
skipping: [test_24] => (item=CentOS-Linux-ContinuousRelease.repo)
...
skipping: [test_24] => (item=CentOS-Linux-AppStream.repo)
skipping: [test_24]
TASK [Change the lines] **********************************************************************
--- before: /etc/yum.repos.d/CentOS-Linux-ContinuousRelease.repo
+++ after: /etc/yum.repos.d/CentOS-Linux-ContinuousRelease.repo
## -17,7 +17,7 ##
[cr]
name=CentOS Linux $releasever - ContinuousRelease
-mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=cr&infra=$infra
+#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=cr&infra=$infra
#baseurl=http://mirror.centos.org/$contentdir/$releasever/cr/$basearch/os/
gpgcheck=1
enabled=0
changed: [test_24] => (item=CentOS-Linux-ContinuousRelease.repo)
--- before: /etc/yum.repos.d/CentOS-Linux-ContinuousRelease.repo
+++ after: /etc/yum.repos.d/CentOS-Linux-ContinuousRelease.repo
## -18,7 +18,7 ##
[cr]
name=CentOS Linux $releasever - ContinuousRelease
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=cr&infra=$infra
-#baseurl=http://mirror.centos.org/$contentdir/$releasever/cr/$basearch/os/
+baseurl=http://mirror.centos.org/$contentdir/$releasever/cr/$basearch/os/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
changed: [test_24] => (item=CentOS-Linux-ContinuousRelease.repo)
...
--- before: /etc/yum.repos.d/CentOS-Linux-AppStream.repo
+++ after: /etc/yum.repos.d/CentOS-Linux-AppStream.repo
## -11,7 +11,7 ##
[appstream]
name=CentOS Linux $releasever - AppStream
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=AppStream&infra=$infra
-#baseurl=http://mirror.centos.org/$contentdir/$releasever/AppStream/$basearch/os/
+#baseurl=http://vault.centos.org/$contentdir/$releasever/AppStream/$basearch/os/
baseurl=http://vault.centos.org/$contentdir/$releasever/AppStream/$basearch/os/
gpgcheck=1
enabled=0
changed: [test_24] => (item=CentOS-Linux-AppStream.repo)
PLAY RECAP ***********************************************************************************
test_24: ok=3 changed=1 unreachable=0 failed=0 skipped=1 rescued=0 ignored=0