Implement stonith levels resource
This resource implements a stonith levels definition. This is used so that we can define a specific sequence of stonith operations on a node. More documentation about stonith levels can be found here: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/high_availability_add-on_reference/#s1-fencelevels-HAAR Change-Id: I9cc5064e776a3771e30d853d9453026d2731c98d
This commit is contained in:
Michele Baldessari
parent
48c8599793
commit
ebef43cadf
51
lib/puppet/provider/pcmk_stonith_level/default.rb
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51
lib/puppet/provider/pcmk_stonith_level/default.rb
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require_relative '../pcmk_common'
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Puppet::Type.type(:pcmk_stonith_level).provide(:default) do
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desc 'A base resource definition for a pacemaker stonith level definition'
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### overloaded methods
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def create
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level = @resource[:level]
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target = @resource[:target]
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stonith_resources = @resource[:stonith_resources]
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res = stonith_resources.join(',')
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cmd = 'stonith level add ' + level.to_s + ' ' + target + ' ' + res
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pcs('create', "#{name}-#{target}-#{res}", cmd, @resource[:tries],
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@resource[:try_sleep], @resource[:verify_on_create], @resource[:post_success_sleep])
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end
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def destroy
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# Any corresponding location rules will be deleted by
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# pcs automatically, if present
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target = @resource[:target]
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level = @resource[:level]
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cmd = 'stonith level remove ' + level.to_s + ' ' + target
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pcs('delete', @resource[:name], cmd, @resource[:tries],
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@resource[:try_sleep], @resource[:verify_on_create], @resource[:post_success_sleep])
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end
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def exists?
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# stonith level output is a bit cumbersome to parse:
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# Target: overcloud-galera-0
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# Level 1 - stonith-fence_ipmilan-006809859383,stonith-fence_compute-fence-nova
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# Target: overcloud-novacompute-0
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# Level 1 - stonith-fence_ipmilan-006809859383,stonith-fence_compute-fence-nova
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# Level 2 - stonith-fence_ipmilan-006809859383,stonith-fence_compute-fence-nova
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# Target: overcloud-rabbit-0
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# Level 2 - stonith-fence_ipmilan-006809859383,stonith-fence_compute-fence-nova
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target = @resource[:target]
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level = @resource[:level]
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stonith_resources = @resource[:stonith_resources]
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res = stonith_resources.join(',')
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Puppet.debug("Exists: stonith level exists #{level} #{target} #{res}")
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# The below cmd return the "Level X - ...." strings after the Target: string until the next
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# Target: string (or until the bottom of the file if it is the last Target in the output
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cmd = 'stonith level | sed -n "/^Target: ' + target + '$/,/^Target:/{/^Target: ' + target + '$/b;/^Target:/b;p}"'
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cmd += ' | grep -e "Level[[:space:]]*' + level.to_s + '[[:space:]]*-[[:space:]]*' + res + '"'
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ret = pcs('show', @resource[:name], cmd, @resource[:tries],
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@resource[:try_sleep], @resource[:verify_on_create], @resource[:post_success_sleep])
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return ret == false ? false : true
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end
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end
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99
lib/puppet/type/pcmk_stonith_level.rb
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99
lib/puppet/type/pcmk_stonith_level.rb
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require 'puppet/parameter/boolean'
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Puppet::Type.newtype(:pcmk_stonith_level) do
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@doc = "Base resource definition for a pacemaker stonith level resource"
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ensurable
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newparam(:name) do
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desc "A unique name for the stonith level"
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end
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newparam(:level) do
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desc "The stonith level"
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munge do |value|
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if value.is_a?(String)
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unless value =~ /^[\d]+$/
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raise ArgumentError, "The stonith level must be an integer"
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end
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value = Integer(value)
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end
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raise ArgumentError, "Level must be an integer >= 1" if value < 1
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value
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end
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end
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newparam(:target) do
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desc "The pacemaker stonith target to apply the level to"
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end
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newparam(:stonith_resources) do
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desc "The array containing the list of stonith devices"
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# FIXME: check for an array of strings
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end
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## borrowed from exec.rb
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newparam(:tries) do
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desc "The number of times to attempt to create a pcs resource.
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Defaults to '1'."
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munge do |value|
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if value.is_a?(String)
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unless value =~ /^[\d]+$/
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raise ArgumentError, "Tries must be an integer"
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end
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value = Integer(value)
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end
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raise ArgumentError, "Tries must be an integer >= 1" if value < 1
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value
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end
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defaultto 1
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end
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newparam(:try_sleep) do
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desc "The time to sleep in seconds between 'tries'."
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munge do |value|
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if value.is_a?(String)
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unless value =~ /^[-\d.]+$/
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raise ArgumentError, "try_sleep must be a number"
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end
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value = Float(value)
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end
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raise ArgumentError, "try_sleep cannot be a negative number" if value < 0
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value
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end
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defaultto 0
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end
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newparam(:verify_on_create, :boolean => true, :parent => Puppet::Parameter::Boolean) do
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desc "Whether to verify pcs resource creation with an additional
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call to 'pcs resource show' rather than just relying on the exit
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status of 'pcs resource create'. When true, $try_sleep
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determines how long to wait to verify and $post_success_sleep is
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ignored. Defaults to `false`."
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defaultto false
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end
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newparam(:post_success_sleep) do
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desc "The time to sleep after successful pcs action. The reason to set
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this is to avoid immediate back-to-back 'pcs resource create' calls
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when creating multiple resources. Defaults to '0'."
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munge do |value|
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if value.is_a?(String)
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unless value =~ /^[-\d.]+$/
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raise ArgumentError, "post_success_sleep must be a number"
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end
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value = Float(value)
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end
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raise ArgumentError, "post_success_sleep cannot be a negative number" if value < 0
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value
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end
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defaultto 0
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end
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end
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90
manifests/stonith/level.pp
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90
manifests/stonith/level.pp
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# == Define: pacemaker::stonith::level
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#
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# A resource type to create pacemaker stonith levels
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#
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# === Parameters
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#
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# [*level*]
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# (required) The stonith level
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#
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# [*target*]
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# (required) The stonith level target
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#
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# [*stonith_resources*]
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# (required) Array containing the list of stonith devices
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#
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# [*ensure*]
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# (optional) Whether to make sure resource is created or removed
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# Defaults to present
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#
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# [*post_success_sleep*]
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# (optional) How long to wait acfter successful action
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# Defaults to 0
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#
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# [*tries*]
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# (optional) How many times to attempt to perform the action
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# Defaults to 1
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#
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# [*try_sleep*]
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# (optional) How long to wait between tries
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# Defaults to 0
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#
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# [*verify_on_create*]
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# (optional) Whether to verify creation of resource
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# Defaults to false
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#
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# === Dependencies
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#
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# None
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#
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# === Authors
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#
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# Michele Baldessari <michele@acksyn.org>
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#
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# === Copyright
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#
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# Copyright (C) 2017 Red Hat Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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define pacemaker::stonith::level(
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$level,
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$target,
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$stonith_resources,
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$ensure = 'present',
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$post_success_sleep = 0,
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$tries = 1,
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$try_sleep = 0,
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$verify_on_create = false,
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) {
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if $level == undef {
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fail('Must provide level')
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}
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if $target == undef {
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fail('Must provide target')
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}
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if $stonith_resources == undef {
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fail('Must provide stonith_resources')
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}
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$res = join($stonith_resources, '_')
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pcmk_stonith_level{ "stonith-level-${level}-${target}-${res}":
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ensure => $ensure,
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level => $level,
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target => $target,
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stonith_resources => $stonith_resources,
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post_success_sleep => $post_success_sleep,
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tries => $tries,
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try_sleep => $try_sleep,
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verify_on_create => $verify_on_create,
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}
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}
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86
spec/defines/pacemaker_stonith_level_spec.rb
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86
spec/defines/pacemaker_stonith_level_spec.rb
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#
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# Copyright (C) 2017 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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require 'spec_helper'
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describe 'pacemaker::stonith::level', type: :define do
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let(:title) { 'test' }
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let(:pre_condition) { [
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'class pacemaker::corosync {}',
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'class { "pacemaker::corosync" : }'
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] }
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shared_examples_for 'pacemaker::stonith::level' do
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context 'with ensure absent' do
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let(:params) { {
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:ensure => 'absent',
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:level => '1',
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:target => 'node-foo',
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:stonith_resources => ['ipmi-node-foo','fence-bar'],
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:tries => 1,
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:try_sleep => 5,
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:verify_on_create => false,
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} }
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it {
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is_expected.to contain_pcmk_stonith_level("stonith-level-1-node-foo-ipmi-node-foo_fence-bar").with(
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:ensure => 'absent',
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:level => '1',
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:target => 'node-foo',
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:stonith_resources => ['ipmi-node-foo','fence-bar'],
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:tries => 1,
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:try_sleep => 5,
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:verify_on_create => false,
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)
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}
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end
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context 'with params' do
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let(:params) { {
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:level => '1',
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:target => 'node-foo',
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:stonith_resources => ['ipmi-node-foo','fence-bar'],
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:tries => 1,
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:try_sleep => 5,
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:verify_on_create => false,
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} }
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it {
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is_expected.to contain_pcmk_stonith_level("stonith-level-1-node-foo-ipmi-node-foo_fence-bar").with(
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:ensure => 'present',
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:level => '1',
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:target => 'node-foo',
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:stonith_resources => ['ipmi-node-foo','fence-bar'],
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:tries => 1,
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:try_sleep => 5,
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:verify_on_create => false,
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)
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}
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end
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end
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on_supported_os.each do |os, facts|
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context "on #{os}" do
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let(:facts) do
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facts.merge({ :hostname => 'node.example.com' })
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end
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it_behaves_like 'pacemaker::stonith::level'
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end
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end
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end
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