Attachment 1478551 Details for Bug 1621891 – automate method

automate method

best_fit_cluster_by_tags.rb (text/plain), 4.31 KB, created by David Luong on 2018-08-24 14:41:57 UTC

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Creator: David Luong

Created: 2018-08-24 14:41:57 UTC

Size: 4.31 KB

patch

obsolete

>###################################
>#
># EVM Automate Method: best_fit_with_tags
>#
># Notes: This method is used to find all hosts, datastores that match the required tag
>#
>###################################
>begin
>  @method = 'best_fit_cluster_by_tags'
>  $evm.log("info", "===== EVM Automate Method:  Started")
> 
>  # Turn of verbose logging
>  @debug = true
> 
>  #
>  # Get variables
>  #
>  prov = $evm.root["miq_provision"]
>  vm = prov.vm_template
>  raise "VM not specified" if vm.nil?
>  ems  = vm.ext_management_system
>  raise "EMS not found for VM [#{vm.name}" if ems.nil?
>  tags = prov.get_tags
> 
>tags = vm.tags
> 
>$evm.log("info", "Template Tags - #{vm.tags}")
> 
>tags.each  do  |t|
> s = t.split("/")
>  if s[0] == 'prov_scope'
>      @prov_tag = s[1]
>  end
>end
> 
>$evm.log("info", "Template is tagged with - #{@prov_tag}")
> 
>myclusters = $evm.vmdb("ems_cluster").all
>myclusters.each do | cluster |
>  cluster_tags = cluster.tags
>     cluster_tags.each  do  |t|
>     s = t.split("/")
>     if s[0] == 'prov_scope'
>        @clus_tag = s[1]
>        if @clus_tag == @prov_tag
>          @clus_hosts = cluster.hosts
>        end
>     end
>  end
>end
> 
>$evm.log("info", "Cluster(s) is/are tagged with - #{@clus_tag}")
>@clus_hosts.each do | host |
>    $evm.log("info", "Host in cluster -- #{host.name}")
>end
> 
>  # Log all provisioning options and space required
>  $evm.log("info", "options: #{prov.options.inspect}") if @debug
>  $evm.log("info", "Inline Method:  -- vm=[#{vm.name}], space required=[#{vm.provisioned_storage}]")
> 
>  # STORAGE LIMITATIONS
>  STORAGE_MAX_VMS      = 0
>  storage_max_vms      = $evm.object['storage_max_vms']
>  storage_max_vms      = storage_max_vms.strip.to_i if storage_max_vms.kind_of?(String) && !storage_max_vms.strip.empty?
>  storage_max_vms      = STORAGE_MAX_VMS unless storage_max_vms.kind_of?(Numeric)
> 
>  STORAGE_MAX_PCT_USED = 100
>  storage_max_pct_used = $evm.object['storage_max_pct_used']
>  storage_max_pct_used = storage_max_pct_used.strip.to_i if storage_max_pct_used.kind_of?(String) && !storage_max_pct_used.strip.empty?
>  storage_max_pct_used = STORAGE_MAX_PCT_USED unless storage_max_pct_used.kind_of?(Numeric)
> 
>  host = storage = nil
>  min_registered_vms = nil
>  @clus_hosts.each { |h|
>#    next unless h.power_state == "on"
>    $evm.log("info", "Looking at host -- #{h.name}")
>    nvms = h.vms.length
> 
>    # Filter out storages that do not have enough free space for the Vm
>    storages = h.storages.find_all { |s|
>      if s.free_space > vm.provisioned_storage
>        $evm.log("info", "Storage Space -- #{s.free_space} is > than #{vm.provisioned_storage}")
>        true
>      else
>        $evm.log("info", "Skipping Datastore: [#{s.name}], not enough free space for VM. Available: [#{s.free_space}], Needs: [#{vm.provisioned_storage}]")
>        false
>      end
>    }
>    # Filter out storages number of VMs is greater than the max number of VMs
>    storages = storages.find_all { |s|
>      if (storage_max_vms == 0) || (s.vms.size < storage_max_vms)
>        true
>      else
>        $evm.log("info", "Skipping Datastore: [#{s.name}], max number of VMs exceeded")
>        false
>      end
>    }
>    # Filter out storages where percent used is greater than the max.
>    storages = storages.find_all { |s|
>      if (storage_max_pct_used == 100) || (s.v_used_space_percent_of_total < storage_max_pct_used)
>        true
>      else
>        $evm.log("info", "Skipping Datastore: [#{s.name}], percent of used space is exceeded")
>        false
>      end
>    }
>    # if minimum registered vms is nil or number of vms on a host is greater than nil
>    if min_registered_vms.nil? || nvms < min_registered_vms
>      s = storages.sort { |a,b| a.free_space <=>  b.free_space }.last
>      unless s.nil?
>        host    = h
>        storage = s
>        min_registered_vms = nvms
>      end
>    end
>  }
> 
>  # Set host and storage
>  cluster = host.ems_cluster
>  obj = $evm.object
>  obj["host"]    = host    unless host.nil?
>  obj["storage"] = storage unless storage.nil?
>  obj["cluster"] = cluster unless cluster.nil?
>  prov.set_cluster(cluster)
>  $evm.log("info", "Inline Method:  -- vm=[#{vm.name}] host=[#{host}] storage=[#{storage}] cluster=[#{cluster.name}]")
> 
>  #
>  # Exit method
>  #
>  $evm.log("info", "===== EVM Automate Method:  Ended")
>  exit MIQ_OK
> 
>  #
>  # Set Ruby rescue behavior
>  #
>rescue => err
>  $evm.log("error", ": [#{err}]n#{err.backtrace.join("n")}")
>  exit MIQ_ABORT
>end

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Attachments on bug 1621891: 1478551