Hi all
I have a thorny problem I can't work out a way to Puppet around.
Caution: long, confusing, probably badly-explained.
We use Autonomy IDOL 7, which I've packaged into an RPM that installs
in /opt/idol7/shared. This is a generic install -- to actually
configure an IDOL server we set up /opt/idol7/Instance, which contains
a configuration file and symlinks to the shared binary and other
resources. E.g.:
[r...@dev ~]# ls -l /opt/idol7/Intranet
[..]
-rw-r--r-- 1 idol idol 13277 Dec 9 13:04 IntranetIDOLServer.cfg
lrwxrwxrwx 1 idol idol 52 Aug 21 09:19 IntranetIDOLServer.exe -
> /opt/idol7/shared/content/content.exe
lrwxrwxrwx 1 idol idol 42 Aug 21 09:19 langfiles -> /opt/idol7/
shared/langfiles
lrwxrwxrwx 1 idol idol 55 Aug 21 09:19 libautnxslt.so -> /opt/
idol7/shared/content/libautnxslt.so
lrwxrwxrwx 1 idol idol 40 Aug 21 09:19 modules -> /opt/idol7/
shared/modules
lrwxrwxrwx 1 idol idol 42 Aug 21 09:19 templates -> /opt/idol7/
shared/templates
Most of these symlinks are set up by the in-house init script we use.
The only things that are actually needed are the configuration file
and binary symlink, so:
class autonomy::idol7 inherits autonomy {
define instance() {
file {
"/opt/idol7/$title":
ensure => directory,
owner => "idol",
group => "idol",
require => Package["IDOL7"];
"/opt/idol7/$title/${title}IDOLServer.cfg":
ensure => present,
owner => "idol",
group => "idol",
notify => Service["${title}IDOL7Server"],
source => "puppet://$servername/autonomy/idol7/${title}
IDOLServer.cfg";
"/etc/init.d/${title}IDOL7Server":
ensure => present,
mode => 755,
content => template("autonomy/idol7/init.sh.erb");
}
service { "${title}IDOL7Server":
# links to in-house init script
}
}
node foo {
autonomy::idol7::instance { "Intranet": }
}
The first time the service is started the rest of the symlinks are
created.
But! Now and then I need to override some files in langfiles. If this
is necessary we'd remove the symlinked-to-shared langfiles, copy the
shared langfiles directory into the Instance directory and replace the
appropriate files. E.g.:
* rm /opt/idol7/Instance/langfiles
* cp -prv /opt/idol7/shared/langfiles /opt/idol7/Instance
* cp /file/store/foo.dat /opt/idol7/Instance/langfiles
I'd rather get Puppet to do this. Ideally I'd do:
node foo {
autonomy::idol7::instance { "Intranet":
"langfiles" => "override"
}
}
And have my define() remove the symlink, copy the shared files over
and then copy the contents of "puppet://$servername/autonomy/idol7/$
{title}/langfiles" into /opt/idol7/${title}/langfiles. Implementing
this is where I fall down. At the moment all I can think of is
something like:
define instance($langfiles = "") {
[..]
case $langfiles ? {
"": {
file { # make symlink to shared }
},
default: {
exec { "idol7_copy_langfiles":
# remove symlink, copy shared langfiles
}
file { "/opt/idol7/${title}/langfiles":
ensure => directory,
source => "puppet://$servername/autonomy/idol7/${title}/
langfiles",
require => Exec["idol7_copy_langfiles"]
}
}
}
}
This is a bit nasty -- I'd need to figure out a way to make the exec
only run once or each Puppet run will clobber my overridden files and
then replace them again. If I do work out how to make it only run once
Puppet won't update the instances if the contents of the shared
directory change, or if I fat-fingeredly remove a non-managed file
from /opt/idol7/Instance/langfiles.
So, any ideas? How can I do this cleanly? And thanks for reading this
far!
Cheers,
Mark
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To post to this group, send email to puppet-users@googlegroups.com
To unsubscribe from this group, send email to
puppet-users+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/puppet-users?hl=en
-~----------~----~----~----~------~----~------~--~---
