Re: [Puppet Users] "Listing" the keys in a hash as an array
Thanks guys
I ended up breaking up what Felix&Ohad suggested into two lines to make it
work:
$keycsv= inline_template("<%= netifcfg.keys.join(',') %>")
$keys = split ($keycsv,',')
Yep, it's a 'hack' (sorry, Ohad, workaround ;)), but it saves me having to
add puppet functions into SVN...
(which is quite involved in my case because we support a big site with
versioned modules and a custom module-versioning mechanism that at present
does not cover custom functions (a long, painful topic in its own right) so
I need to contain this code in the module using it - making this workaround
perfect.
Should we perhaps nudge the above function into mainstream puppet? Being
able to list the keys in a hash is quite a crucial capability to have.
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Re: [Puppet Users] "Listing" the keys in a hash as an array
I must be doing something wrong...
As suggested by Ohad:
Manifest says:
$keys = inline_template("<%= netifcfg.keys %>")
exec { "/bin/echo keys are $keys and netifcfg is $netifcfg": logoutput => true }
Output says:
notice: /Stage[main]/Base::Network-common/Exec[/bin/echo keys are bond0bond1
and netifcfg is
bond0ipaddress10.15.69.177netmask255.255.254.0defaultgatewayyesgateway10.15.68.1bond1ipadderss1.2.3.4netmask255.255.254.0gateway1.2.3.1]/returns:
is notrun, should be 0 (noop)
(DOES work with 1 element tho)
As suggested by Felix:
Manifest says:
$keys = split(",", inline_template("<%= netifcfg.keys.join(',')
%>"))
exec { "/bin/echo keys are $keys and netifcfg is $netifcfg":
logoutput => true }
Output says:
notice: /Stage[main]/Base::Network-common/Exec[/bin/echo keys are , and
netifcfg is
bond0ipaddress10.15.69.177netmask255.255.254.0defaultgatewayyesgateway10.15.68.1bond1ipadderss1.2.3.4netmask255.255.254.0gateway1.2.3.1]/returns:
keys are , and netifcfg is
bond0ipaddress10.15.69.177netmask255.255.254.0defaultgatewayyesgateway10.15.68.1bond1ipadderss1.2.3.4netmask255.255.254.0gateway1.2.3.1
(Split doesn't seem to work).
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Re: [Puppet Users] "Listing" the keys in a hash as an array
I must be doing something wrong...
As suggested by Ohad:
Manifest says:
$keys = inline_template("<%= netifcfg.keys %>")
exec { "/bin/echo keys are $keys and netifcfg is $netifcfg": logoutput => true }
Output says:
notice: /Stage[main]/Base::Network-common/Exec[/bin/echo keys are bond0bond1
and netifcfg is
bond0ipaddress10.15.69.177netmask255.255.254.0defaultgatewayyesgateway10.15.68.1bond1ipadderss1.2.3.4netmask255.255.254.0gateway1.2.3.1]/returns:
is notrun, should be 0 (noop)
(DOES work with 2 element tho)
As suggested by Felix:
Manifest says:
$keys = split(",", inline_template("<%= netifcfg.keys.join(',')
%>"))
exec { "/bin/echo keys are $keys and netifcfg is $netifcfg":
logoutput => true }
Output says:
notice: /Stage[main]/Base::Network-common/Exec[/bin/echo keys are , and
netifcfg is
bond0ipaddress10.15.69.177netmask255.255.254.0defaultgatewayyesgateway10.15.68.1bond1ipadderss1.2.3.4netmask255.255.254.0gateway1.2.3.1]/returns:
keys are , and netifcfg is
bond0ipaddress10.15.69.177netmask255.255.254.0defaultgatewayyesgateway10.15.68.1bond1ipadderss1.2.3.4netmask255.255.254.0gateway1.2.3.1
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[Puppet Users] "Listing" the keys in a hash as an array
Hi all
I've got node definition on the site with server interface, bonding and
TCP/IP configurations inscribed in a per-node [ hash + accompanying
array-of-interface-names ]
(e.g. $array = [ 'eth0', 'eth1' ]
$hash = {
eth0 => {
ipaddress => 1.2.3.4,
... }
eth1 => {
ipaddress => 5.6.7.8,
... }
}
What I have right now works, but is clunky and could probably be written
better.
My 2 questions are:
1. Can I somehow get a list of keys from the hash itself (a list that will
behave like an array that I can feed into a defined type) instead of
"manually" defining $array for this purpose?
2. If you look further down inside in this post, the code (taken from inside
the base class) does this:
[a] gets the hash with the configuration passed in as a global variable
[b] copies the hash elements into local variables (because a local variable
can be double-quoted around, and behave nicely even if it wasn't set and is
blank, whereas a hash element cannot)
[c] invokes the interface-configuration defined type with the local
variables as parameters.
A very messy roundabout way of doing things. Can anyone suggest an easier
way (tho still ultimately has to call base::network-common::interface)
In the node file I have a configuration block that looks like this:
$netiflist = [ 'eth0' ]
$netifcfg = {
eth0 => { ipaddress => "1.2.3.4",
netmask => "255.255.255.0",
gateway => "1.2.3.1",
defaultgateway => "yes" },
}
include base
Then in a subclass of base I have:
class base-subclass {
# Iterate for all the interfaces that need to be configured:
if $netiflist { base::network-common::dointerfaces
{[$netiflist]:}}
}
# the actual defined type:
define base::network-common::dointerfaces() {
# copy hash elements into local variables:
$myipaddress = $netifcfg[$name][ipaddress]
$mynetmask = $netifcfg[$name][netmask]
$mygateway = $netifcfg[$name][gateway]
$mydefaultgateway = $netifcfg[$name][defaultgateway]
$myhwaddress = $netifcfg[$name][hwaddress]
$myroutes = $netifcfg[$name][routes]
$myensure = $netifcfg[$name][ensure]
# and finally use the double-quoted local variables to call the interface
defined type:
base::network-common::interface { $name:
ipaddress => "$myipaddress",
netmask => "$mynetmask",
gateway => "$mygateway",
defaultgateway => "$mydefaultgateway",
hwaddress => "$myhwaddress",
routes => "$myroutes",
ensure => "$myensure"
}
}
...
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