Good day, all.
I want to add the following line to a file:
_some-name TXT “aZJACEhonRJiOCL1ZtkKMKnx7U4m5jbSswyClGb6wGk”
I would think I’d use the following:
lineinfile: dest=/somedir/somefile insertafter=EOF line="_acme-challenge TXT “aZJACEhonRJiOCL1ZtkKMKnx7U4m5jbSswyClGb6wGk”
However, the quoted string at the end is screwing my up. How do I make this work? Would ansible.builtin.blockinfile be better? If so, how would I set that up?
Single-quoted strings can contain double-quotes. So instead of
line="something ending with a "double-quoted string""
do this:
line='something ending with a "double-quoted string"'
Thanks, Todd. I already tried that, and it fails:
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to see
details
[WARNING]: Found both group and host with same name: uoj
ERROR! We were unable to read either as JSON nor YAML, these are the errors we got from each:
JSON: Expecting value: line 1 column 1 (char 0)
Syntax Error while loading YAML.
mapping values are not allowed in this context
The error appears to be in ‘/etc/ansible/playbooks/updatedns.yml’: line 8, column 16, but may
be elsewhere in the file depending on the exact syntax problem.
The offending line appears to be:
“lineinfile” should line up with “name” above. The “lineinfile:” is the mapping that it’s complaining cannot be indented more than “name:”. Such indentation creates a new context. Thus the message, “mapping values are not allowed in this context”.
Is there a reason to use the “key=value” format instead of:
- name: Add to file
ansible.builtin.lineinfile:
dest: /somedir/somefile
insertafter: EOF
line: '_some-name TXT "aZJACEhonRJiOCL1ZtkKMKnx7U 4m5j bSswyClGb6wGk"'
It isn’t wrong. It just looks weird when you’re used to the other style.
Cheers,
Thanks, Todd! with your hints, I was able to get the results I want.
Hopefully, I’m staying on-topic (and not being a pita) when I ask for further assistance with this playbook, and lineinfile. Here’s the playbook, thus far:
Ah, silly me. As is my wont, I overthought this. This works to do what I want:
This will update the serial number like you want on the zone files that get changed. It’s not pretty, but it works.
In fact, it’s particularly ugly, using a Perl script to loop over your zone_files and print json to stdout that gets read back in.
I’ve got to admit it: it was fun to play with Perl again. So, thanks for that!
- name: Add TXT entry to zone file
lineinfile:
dest: "{{ item }}"
insertafter: EOF
line: '_some-name TXT "aZBBBBhonRJiOCL1ZtkKMKnx7U2k3wbSswyClGb6wGk"'
with_items: "{{ zone_files }}"
register: add_txt
- name: Show add_txt
ansible.builtin.debug:
var: add_txt
- name: Generate updated serial numbers for zone_files
ansible.builtin.command: >-
perl -n -e 'BEGIN {print "{";$sep="";}
if (m/\b(\d{8})(\d{2}).*serial/i) {
if ($1 eq "{{ today }}") {
printf("%s\"%s\": \"%s%02d\"", $sep, $ARGV, "{{ today }}", $2+1);
} else {
printf("%s\"%s\": \"%s%02d\"", $sep, $ARGV, "{{ today }}", "01");
}
$sep=",\n";
}
END{print"}"}' {{ zone_files | map('quote') | join(' ') }}
vars:
today: "{{ lookup('pipe', 'date +%Y%m%d') }}"
register: new_serial
- name: Make new_serial easily accessible
ansible.builtin.set_fact:
new_serials : "{{ new_serial.stdout | from_json() }}"
- name: Update serial number
lineinfile:
backrefs: true
dest: "{{ item }}"
regexp: '^(\s+)(\d{8})(\d{2})(\s+; Serial Number.*)'
line: '\g<1>{{ new_serials[item] }}\g<4>'
loop: "{{ add_txt.results | selectattr('changed', 'true') | map(attribute='item') }}"
Todd, the above works great; thanks!