lineinfile is tricky and I don't have bandwidth to debug this one right
now, but maybe some other folks would like to help?

Most of the time, I *strongly* recommend just templating the file, that way
you are centrally very sure of the state of everything that's in there.




On Fri, Aug 8, 2014 at 2:22 PM, Willard Dennis <[email protected]>
wrote:

> Hi all,
>
> I have a playbook used for setting up new servers here, that among other
> things, ensures both NTP and NIS (yes, we still use NIS here...) are
> installed and are running. The problem I am seeing is that when the
> playbook executes the notify action for restarting the ntpd service, it is
> failing because the 'ntp' user is no longer in /etc/passwd. I believe the
> problem is occurring when I run tasks in the playbook that call the
> 'lineinfile' module to ensure I have a certain entry needed for NIS logins
> at the bottom of /etc/passwd, which seems to be overwriting the
> then-last-line which is the 'ntp' user one.
>
> Here is the tasks that make sure NTPD is installed and running...
>
> [...]
>
> - name: DEBFAM | Ensure NTP package is installed
> apt: pkg=ntp state=present
> tags: ntp
>
> - name: DEBFAM | Ensure NTP configured correctly
> template: src=ntp.conf.j2 dest=/etc/ntp.conf
> notify:
> - restart deb-ntpd
> tags: ntp
>
> - name: DEBFAM | Ensure NTP is running and enabled
> service: name=ntp state=running enabled=yes
> tags: ntp
>
> [...]
>
> Right after these steps are run, I can cat /etc/password and notice that
> the 'ntp' user entry is there, and happens to be the last entry...
>
> [...]
> rtkit:x:116:124:RealtimeKit,,,:/proc:/bin/false
> saned:x:117:125::/home/saned:/bin/false
> whoopsie:x:118:126::/nonexistent:/bin/false
> speech-dispatcher:x:119:29:Speech
> Dispatcher,,,:/var/run/speech-dispatcher:/bin/sh
> hplip:x:120:7:HPLIP system user,,,:/var/run/hplip:/bin/false
> ntp:x:121:127::/home/ntp:/bin/false
>
> Then the playbook runs the tasks I have set up to ensure NIS is installed
> and running...
>
> [...]
>
> - name: DEBFAM | Ensure NIS package is installed
> apt: pkg=nis
> tags: nis
>
> - name: DEBFAM | Ensure /etc/yp.conf configured correctly for NIS
> template: src=yp.conf.j2 dest=/etc/yp.conf
> notify:
> - restart nis
> tags: nis
>
> - name: DEBFAM | Ensure /etc/defaultdomain configured correctly for NIS
> template: src=etc-defaultdomain.j2 dest=/etc/defaultdomain
> notify:
> - restart nis
> tags: nis
>
> - name: DEBFAM | Ensure /etc/nsswitch.conf configured correctly for NIS
> template: src=nsswitch.conf.j2 dest=/etc/nsswitch.conf
> tags: nis
>
> - name: DEBFAM | Erase old /etc/passwd entry for NIS users
> lineinfile: dest=/etc/passwd
> regexp='::::::+'
> state=absent
> tags: nis
>
> - name: DEBFAM | Erase old /etc/shadow entry for NIS users
> lineinfile: dest=/etc/shadow
> regexp='::::::::+'
> state=absent
> tags: nis
>
> - name: DEBFAM | Ensure NIS is running and enabled
> service: name=ypbind state=restarted enabled=yes
> notify:
> - restart autofs
> tags: nis
>
> - name: DEBFAM | Ensure /etc/passwd has correct entry for NIS users
> lineinfile: dest=/etc/passwd
> regexp=''
> insertafter=EOF
> line='::::::+'
> notify:
> - restart nis
> tags: nis
>
> - name: DEBFAM | Ensure /etc/shadow has correct entry for NIS users
> lineinfile: dest=/etc/shadow
> regexp=''
> insertafter=EOF
> line='::::::::+'
> notify:
> - restart nis
> tags: nis
>
> [...]
>
> (I'm running the lineinfile module once on /etc/passwd and /etc/shadow to
> remove any old existing entries for the '+::::...' patterns, and then
> running them again on those files to ensure they are present and at the end
> of those respective files.)
>
> However, when the playbook is ending and running the accumulated notifies,
> when it hits the 'restart deb-ntpd' action, this fails, complaining that
> the 'ntp' user is not there --
>
> NOTIFIED: [common | restart deb-ntpd]
> *****************************************
> failed: [dhcp-207-150] => {"failed": true}
> msg: * Stopping NTP server ntpd
> ...done.
> * Starting NTP server ntpd
> * user "ntp" does not exist
>
>
> FATAL: all hosts have already failed -- aborting
>
> If I then cat /etc/passwd, I notice that the entry for the 'ntp' user is
> gone, and seemingly overwritten by the NIS entry:
>
> [...]
> rtkit:x:116:124:RealtimeKit,,,:/proc:/bin/false
> saned:x:117:125::/home/saned:/bin/false
> whoopsie:x:118:126::/nonexistent:/bin/false
> speech-dispatcher:x:119:29:Speech
> Dispatcher,,,:/var/run/speech-dispatcher:/bin/sh
> hplip:x:120:7:HPLIP system user,,,:/var/run/hplip:/bin/false
> ::::::+
>
> This has happened a number of times to me, enough that I believe I'm
> hitting a bug (or am using the 'lineinfile' module incorrectly somehow??)
> so I thought I'd post it to this list and ask for help with debugging
> this....
>
> Thanks,
> Will
>
>
>
>
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