How can a puppet resource check for a data source on the puppetmaster without failing to compile?
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I am writing a puppet Ceph deployment module and need to generate keys on an admin node and distribute them to the monitor nodes. I have written server-side functions to retrieve the keys once they are generated, but would like to only distribute those keys once they exist.
- The manifest for the admin node generates the cluster keys
- Manifests for the monitor and management nodes need to include those keys as file resources
- The manifests should not fail to compile (or generate undue log volume) if they keys have not yet been generated
- The file resources need to be named as they are per-requisites for other resources
n.b. The examples are from Puppet3 so no Ruby dispatch :(
What is the philosophically pure approach to gather and distribute keys?
Sample code:
manifests/admin_node.pp:
exec { "make_${cluster[name]}_${name}_keyring":
command => "/usr/bin/ceph-authtool --create-keyring ${ring[file]} --gen-key -n ${ring[name]} ${ring[auth]}",
require => [ File[$confdir, $bootdir], Package['ceph-common'], ],
creates => $ring[file],
}
lib/puppet/parser/functions/get_remote_file.rb:
module Puppet::Parser::Functions
newfunction(:get_remote_file, :type => :rvalue) do |args|
return "Error 3: " + args.length.to_s + " arguments were provided to get_remote_file.rb. Required is 3 to 5." if args.length < 3 or args.length > 5
remote_host = args[0]
remote_path = args[1]
local_path = args[2]
local_user = (args.length > 3) ? 'runuser -l ' + args[3] + ' ' : ''
remote_user = (args.length > 4) ? args[4] + '@' : ''
# Is the file already down?
return 0 if File.exist?(local_path)
`"#{local_user}bash -c 'scp #{remote_user}#{remote_host}:#{remote_path} #{local_path} 2> /dev/null'"`
return $?.exitstatus
end
end
manifests/monitor_node.pp:
unless file_exists($master_key) {
get_remote_file($adm_node, $monitor_keyring, $master_key)
}
exec { "check_${cluster[name]}.mon.keyring":
command => '/bin/yes',
onlyif => "/usr/bin/test -e $master_key",
}
file { "$libdir/${cluster[name]}.mon.keyring":
ensure => $f_action,
source => "puppet:///modules/ceph$libdir/${cluster[name]}.mon.keyring",
require => Exec["check_${cluster[name]}.mon.keyring"],
}
Thanks for any ideas on how to tackle this. I understand that this is... dis-incentivized in Puppet. What is a good approach?
puppet
asked Nov 17 '18 at 3:16
littlelionlittlelion
11
add a comment |
0
I am writing a puppet Ceph deployment module and need to generate keys on an admin node and distribute them to the monitor nodes. I have written server-side functions to retrieve the keys once they are generated, but would like to only distribute those keys once they exist.
- The manifest for the admin node generates the cluster keys
- Manifests for the monitor and management nodes need to include those keys as file resources
- The manifests should not fail to compile (or generate undue log volume) if they keys have not yet been generated
- The file resources need to be named as they are per-requisites for other resources
n.b. The examples are from Puppet3 so no Ruby dispatch :(
What is the philosophically pure approach to gather and distribute keys?
Sample code:
manifests/admin_node.pp:
exec { "make_${cluster[name]}_${name}_keyring":
command => "/usr/bin/ceph-authtool --create-keyring ${ring[file]} --gen-key -n ${ring[name]} ${ring[auth]}",
require => [ File[$confdir, $bootdir], Package['ceph-common'], ],
creates => $ring[file],
}
lib/puppet/parser/functions/get_remote_file.rb:
module Puppet::Parser::Functions
newfunction(:get_remote_file, :type => :rvalue) do |args|
return "Error 3: " + args.length.to_s + " arguments were provided to get_remote_file.rb. Required is 3 to 5." if args.length < 3 or args.length > 5
remote_host = args[0]
remote_path = args[1]
local_path = args[2]
local_user = (args.length > 3) ? 'runuser -l ' + args[3] + ' ' : ''
remote_user = (args.length > 4) ? args[4] + '@' : ''
# Is the file already down?
return 0 if File.exist?(local_path)
`"#{local_user}bash -c 'scp #{remote_user}#{remote_host}:#{remote_path} #{local_path} 2> /dev/null'"`
return $?.exitstatus
end
end
manifests/monitor_node.pp:
unless file_exists($master_key) {
get_remote_file($adm_node, $monitor_keyring, $master_key)
}
exec { "check_${cluster[name]}.mon.keyring":
command => '/bin/yes',
onlyif => "/usr/bin/test -e $master_key",
}
file { "$libdir/${cluster[name]}.mon.keyring":
ensure => $f_action,
source => "puppet:///modules/ceph$libdir/${cluster[name]}.mon.keyring",
require => Exec["check_${cluster[name]}.mon.keyring"],
}
Thanks for any ideas on how to tackle this. I understand that this is... dis-incentivized in Puppet. What is a good approach?
puppet
asked Nov 17 '18 at 3:16
littlelionlittlelion
11
It sounds like a job for exported resources. For that purpose, do the wanted files have distinct names for each node?
– John Bollinger
Nov 17 '18 at 12:43
Would heavily recommend using a native API and not a raw shell command forscpin that function if you want to go that route.
– Matt Schuchard
Nov 17 '18 at 13:59
Thanks John, yes, the files are unique across the namespace. I have installed puppetDB and am looking to use Exported Resources, but it seems a pretty heavy lift to transfer a key file. I'll comment back here once I get things running.
– littlelion
Nov 18 '18 at 2:24
I agree Matt, that was a quick hack to see if I could get something working. Turned out to be a dead end which is why I posted here to see if there was a better approach someone could recommend.
– littlelion
Nov 18 '18 at 2:25
add a comment |
0
0
0
I am writing a puppet Ceph deployment module and need to generate keys on an admin node and distribute them to the monitor nodes. I have written server-side functions to retrieve the keys once they are generated, but would like to only distribute those keys once they exist.
- The manifest for the admin node generates the cluster keys
- Manifests for the monitor and management nodes need to include those keys as file resources
- The manifests should not fail to compile (or generate undue log volume) if they keys have not yet been generated
- The file resources need to be named as they are per-requisites for other resources
n.b. The examples are from Puppet3 so no Ruby dispatch :(
What is the philosophically pure approach to gather and distribute keys?
Sample code:
manifests/admin_node.pp:
exec { "make_${cluster[name]}_${name}_keyring":
command => "/usr/bin/ceph-authtool --create-keyring ${ring[file]} --gen-key -n ${ring[name]} ${ring[auth]}",
require => [ File[$confdir, $bootdir], Package['ceph-common'], ],
creates => $ring[file],
}
lib/puppet/parser/functions/get_remote_file.rb:
module Puppet::Parser::Functions
newfunction(:get_remote_file, :type => :rvalue) do |args|
return "Error 3: " + args.length.to_s + " arguments were provided to get_remote_file.rb. Required is 3 to 5." if args.length < 3 or args.length > 5
remote_host = args[0]
remote_path = args[1]
local_path = args[2]
local_user = (args.length > 3) ? 'runuser -l ' + args[3] + ' ' : ''
remote_user = (args.length > 4) ? args[4] + '@' : ''
# Is the file already down?
return 0 if File.exist?(local_path)
`"#{local_user}bash -c 'scp #{remote_user}#{remote_host}:#{remote_path} #{local_path} 2> /dev/null'"`
return $?.exitstatus
end
end
manifests/monitor_node.pp:
unless file_exists($master_key) {
get_remote_file($adm_node, $monitor_keyring, $master_key)
}
exec { "check_${cluster[name]}.mon.keyring":
command => '/bin/yes',
onlyif => "/usr/bin/test -e $master_key",
}
file { "$libdir/${cluster[name]}.mon.keyring":
ensure => $f_action,
source => "puppet:///modules/ceph$libdir/${cluster[name]}.mon.keyring",
require => Exec["check_${cluster[name]}.mon.keyring"],
}
Thanks for any ideas on how to tackle this. I understand that this is... dis-incentivized in Puppet. What is a good approach?
puppet
asked Nov 17 '18 at 3:16
littlelionlittlelion
11
I am writing a puppet Ceph deployment module and need to generate keys on an admin node and distribute them to the monitor nodes. I have written server-side functions to retrieve the keys once they are generated, but would like to only distribute those keys once they exist.
- The manifest for the admin node generates the cluster keys
- Manifests for the monitor and management nodes need to include those keys as file resources
- The manifests should not fail to compile (or generate undue log volume) if they keys have not yet been generated
- The file resources need to be named as they are per-requisites for other resources
n.b. The examples are from Puppet3 so no Ruby dispatch :(
What is the philosophically pure approach to gather and distribute keys?
Sample code:
manifests/admin_node.pp:
exec { "make_${cluster[name]}_${name}_keyring":
command => "/usr/bin/ceph-authtool --create-keyring ${ring[file]} --gen-key -n ${ring[name]} ${ring[auth]}",
require => [ File[$confdir, $bootdir], Package['ceph-common'], ],
creates => $ring[file],
}
lib/puppet/parser/functions/get_remote_file.rb:
module Puppet::Parser::Functions
newfunction(:get_remote_file, :type => :rvalue) do |args|
return "Error 3: " + args.length.to_s + " arguments were provided to get_remote_file.rb. Required is 3 to 5." if args.length < 3 or args.length > 5
remote_host = args[0]
remote_path = args[1]
local_path = args[2]
local_user = (args.length > 3) ? 'runuser -l ' + args[3] + ' ' : ''
remote_user = (args.length > 4) ? args[4] + '@' : ''
# Is the file already down?
return 0 if File.exist?(local_path)
`"#{local_user}bash -c 'scp #{remote_user}#{remote_host}:#{remote_path} #{local_path} 2> /dev/null'"`
return $?.exitstatus
end
end
manifests/monitor_node.pp:
unless file_exists($master_key) {
get_remote_file($adm_node, $monitor_keyring, $master_key)
}
exec { "check_${cluster[name]}.mon.keyring":
command => '/bin/yes',
onlyif => "/usr/bin/test -e $master_key",
}
file { "$libdir/${cluster[name]}.mon.keyring":
ensure => $f_action,
source => "puppet:///modules/ceph$libdir/${cluster[name]}.mon.keyring",
require => Exec["check_${cluster[name]}.mon.keyring"],
}
Thanks for any ideas on how to tackle this. I understand that this is... dis-incentivized in Puppet. What is a good approach?
puppet
puppet
asked Nov 17 '18 at 3:16
littlelionlittlelion
11
asked Nov 17 '18 at 3:16
littlelionlittlelion
11
asked Nov 17 '18 at 3:16
littlelionlittlelion
11
asked Nov 17 '18 at 3:16
littlelionlittlelion
11
asked Nov 17 '18 at 3:16
littlelionlittlelion
11
11
It sounds like a job for exported resources. For that purpose, do the wanted files have distinct names for each node?
– John Bollinger
Nov 17 '18 at 12:43
Would heavily recommend using a native API and not a raw shell command forscpin that function if you want to go that route.
– Matt Schuchard
Nov 17 '18 at 13:59
Thanks John, yes, the files are unique across the namespace. I have installed puppetDB and am looking to use Exported Resources, but it seems a pretty heavy lift to transfer a key file. I'll comment back here once I get things running.
– littlelion
Nov 18 '18 at 2:24
I agree Matt, that was a quick hack to see if I could get something working. Turned out to be a dead end which is why I posted here to see if there was a better approach someone could recommend.
– littlelion
Nov 18 '18 at 2:25
add a comment |
It sounds like a job for exported resources. For that purpose, do the wanted files have distinct names for each node?
– John Bollinger
Nov 17 '18 at 12:43
Would heavily recommend using a native API and not a raw shell command forscpin that function if you want to go that route.
– Matt Schuchard
Nov 17 '18 at 13:59
Thanks John, yes, the files are unique across the namespace. I have installed puppetDB and am looking to use Exported Resources, but it seems a pretty heavy lift to transfer a key file. I'll comment back here once I get things running.
– littlelion
Nov 18 '18 at 2:24
I agree Matt, that was a quick hack to see if I could get something working. Turned out to be a dead end which is why I posted here to see if there was a better approach someone could recommend.
– littlelion
Nov 18 '18 at 2:25
It sounds like a job for exported resources. For that purpose, do the wanted files have distinct names for each node?
– John Bollinger
Nov 17 '18 at 12:43
It sounds like a job for exported resources. For that purpose, do the wanted files have distinct names for each node?
– John Bollinger
Nov 17 '18 at 12:43
Would heavily recommend using a native API and not a raw shell command for
scp in that function if you want to go that route.– Matt Schuchard
Nov 17 '18 at 13:59
Would heavily recommend using a native API and not a raw shell command for
scp in that function if you want to go that route.– Matt Schuchard
Nov 17 '18 at 13:59
Thanks John, yes, the files are unique across the namespace. I have installed puppetDB and am looking to use Exported Resources, but it seems a pretty heavy lift to transfer a key file. I'll comment back here once I get things running.
– littlelion
Nov 18 '18 at 2:24
Thanks John, yes, the files are unique across the namespace. I have installed puppetDB and am looking to use Exported Resources, but it seems a pretty heavy lift to transfer a key file. I'll comment back here once I get things running.
– littlelion
Nov 18 '18 at 2:24
I agree Matt, that was a quick hack to see if I could get something working. Turned out to be a dead end which is why I posted here to see if there was a better approach someone could recommend.
– littlelion
Nov 18 '18 at 2:25
I agree Matt, that was a quick hack to see if I could get something working. Turned out to be a dead end which is why I posted here to see if there was a better approach someone could recommend.
– littlelion
Nov 18 '18 at 2:25
add a comment |
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It sounds like a job for exported resources. For that purpose, do the wanted files have distinct names for each node?
– John Bollinger
Nov 17 '18 at 12:43
Would heavily recommend using a native API and not a raw shell command for
scpin that function if you want to go that route.– Matt Schuchard
Nov 17 '18 at 13:59
Thanks John, yes, the files are unique across the namespace. I have installed puppetDB and am looking to use Exported Resources, but it seems a pretty heavy lift to transfer a key file. I'll comment back here once I get things running.
– littlelion
Nov 18 '18 at 2:24
I agree Matt, that was a quick hack to see if I could get something working. Turned out to be a dead end which is why I posted here to see if there was a better approach someone could recommend.
– littlelion
Nov 18 '18 at 2:25