David Schmitt wrote:
> chakkerz wrote:
>> Hello there
>>
>> I'm having a problem (again). At my site we are maintaining RHEL,
>> CentOS and Solaris hosts, with in the future possibly some FreeBSD
>> also being added into the mix. To this end instead of constantly
>> branching whenever running a command on the console (or remembering
>> where it is located), I've set all the commands we need so far up in
>> the default node:
>>
>> class defaultnode
>> {
>> if ($httpd_group == "")
>> {
>> $httpd_group = "root"
>> }
>>
>> case $operatingsystem
>> {
>> centos, redhat:
>> {
>> $cat_cmd = "/bin/cat"
>> $chkconfig_cmd = "/sbin/chkconfig"
>> $chown_cmd = "/bin/chown"
>> $chmod_cmd = "/bin/chmod"
>> $echo_cmd = "/bin/echo"
>> $grep_cmd = "/bin/grep"
>> $ln_cmd = "/bin/ln"
>> $ls_cmd = "/bin/ls"
>> $mailx_cmd = "/bin/mailx"
>> $newaliases_cmd = "/usr/bin/newaliases"
>> $rm_cmd = "/bin/rm"
>> $sed_cmd = "/bin/sed"
>> $tar_cmd = "/bin/tar"
>> $touch_cmd = "/bin/touch"
>> $wget_cmd = "/usr/bin/wget"
>>
>> include redhat-default
>> }
>> solaris:
>> {
>> $cat_cmd = "/usr/bin/cat"
>> $chown_cmd = "/usr/bin/chown"
>> $chmod_cmd = "/usr/bin/chmod"
>> $echo_cmd = "/usr/bin/echo"
>> $grep_cmd = "/usr/bin/grep"
>> $mailx_cmd = "/usr/bin/mailx"
>> $newaliases_cmd = "/usr/sbin/newaliases"
>> $rm_cmd = "/usr/bin/rm"
>> $tar_cmd = "/usr/sfw/bin/gtar"
>>
>> include solaris-default
>> }
>> default:
>> {
>> include shared-default
>> }
>> }
>> }
>>
>> which is called by all nodes, eg:
>>
>> node "testnode.example.org"
>> {
>> include defaultnode
>>
>> exec
>> { "$chkconfig_cmd snmpd on && $touch_cmd /tmp/
>> snmpd_chkconfig.USG":
>> cwd => "/",
>> creates => "/tmp/snmpd_chkconfig.USG",
>> }
>>
>> }
>>
>> But when i run puppet the variables aren't defined:
>> err: Could not create snmpd on && /tmp/snmpd_chkconfig.USG: ' snmpd
>> on && /tmp/snmpd_chkconfig.USG' is both unqualifed and specified no
>> search path at /etc/puppet/manifests/nodes/testnode.node:9
>> warning: Not using cache on failed catalog
>> warning: Configuration could not be instantiated: ' snmpd on && /tmp/
>> snmpd_chkconfig.USG' is both unqualifed and specified no search path
>> at /etc/puppet/manifests/nodes/testnode.node:9
>
> Variables don't escape their scope. Use the search() function to add
> "defaultnode" to the serachpath or reference the variables directly with
> $defaultnode::chkconfig_cmd or "${defaultnode::chkconfig_cmd}". See the
> LanguageTutorial on the wiki for details (section "Variables"[1]).
D'oh. For your actual, underlying problem it'd probably be better to use
something like Volcane's extlookup[1][2] function:
| $extlookup_datadir = "/etc/puppet/manifests/extdata"
| $extlookup_precedence = ["%{fqdn}", "os_%{operatingsystem}", "shared"]
| $cat_cmd = extlookup('cat_cmd')
That can be done in the top-level scope (e.g. in the site.pp outside of
any node or class) to propagate the values to all manifests and modules.
Regards, DavidS
[1]http://nephilim.ml.org/~rip/puppet/extlookup.rb
[2]http://github.com/puppet-modules/puppet-common/blob/0caa32db1aaad6dabc9542c5e0aa20e76ea94f48/plugins/puppet/parser/functions/extlookup.rb
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