Module: VirtualMachineMonitor

Included in:
VCenterDriver::VirtualMachine
Defined in:
lib/vm_monitor.rb

Overview

————————————————————————– # Copyright 2002-2022, OpenNebula Project, OpenNebula Systems #

#

Licensed under the Apache License, Version 2.0 (the “License”); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at #

#

www.apache.org/licenses/LICENSE-2.0 #

#

Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an “AS IS” BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # ————————————————————————— #

Constant Summary collapse

POLL_ATTRIBUTE = 
OpenNebula::VirtualMachine::Driver::POLL_ATTRIBUTE
VM_STATE = 
OpenNebula::VirtualMachine::Driver::VM_STATE

Instance Method Summary collapse

Instance Method Details

#info ⇒ Object

Generates a OpenNebula IM Driver valid string with the monitor info



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# File 'lib/vm_monitor.rb', line 180

def info
    # return 'STATE=d' if @state == 'd'

    if @vm_info
        guest_ip = @vm_info['guest.ipAddress']
    else
        guest_ip = self['guest.ipAddress']
    end

    used_cpu    = @monitor[:used_cpu]
    used_memory = @monitor[:used_memory]
    netrx       = @monitor[:netrx]
    nettx       = @monitor[:nettx]
    diskrdbytes = @monitor[:diskrdbytes]
    diskwrbytes = @monitor[:diskwrbytes]
    diskrdiops  = @monitor[:diskrdiops]
    diskwriops  = @monitor[:diskwriops]

    if @vm_info
        esx_host = @vm_info[:esx_host_name].to_s
    else
        esx_host = self['runtime.host.name'].to_s
    end

    if @vm_info
        guest_state = @vm_info['guest.guestState'].to_s
    else
        guest_state = self['guest.guestState'].to_s
    end

    if @vm_info
        vmware_tools = @vm_info['guest.toolsRunningStatus'].to_s
    else
        vmware_tools = self['guest.toolsRunningStatus'].to_s
    end

    if @vm_info
        vm_name = @vm_info['name'].to_s
    else
        vm_name = self['name'].to_s
    end

    if @vm_info
        vmtools_ver = @vm_info['guest.toolsVersion'].to_s
    else
        vmtools_ver = self['guest.toolsVersion'].to_s
    end

    if @vm_info
        vmtools_verst = @vm_info['guest.toolsVersionStatus2'].to_s
    else
        vmtools_verst = self['guest.toolsVersionStatus2'].to_s
    end

    if @vm_info
        rp_name = @vm_info[:rp_list]
                  .select do |item|
                      item[:ref] == @vm_info['resourcePool']._ref
                  end
                  .first[:name] rescue ''

        rp_name = 'Resources' if rp_name.empty?
    else
        rp_name = self['resourcePool'].name
    end

    str_info = ''

    str_info = 'GUEST_IP=' << guest_ip.to_s << "\n" if guest_ip

    if @guest_ip_addresses && !@guest_ip_addresses.empty?
        str_info << 'GUEST_IP_ADDRESSES="' << @guest_ip_addresses.to_s \
                 << '" '
    end

    str_info << "#{POLL_ATTRIBUTE[:cpu]}=" << used_cpu.to_s << "\n"
    str_info << "#{POLL_ATTRIBUTE[:memory]}=" << used_memory.to_s << "\n"
    str_info << "#{POLL_ATTRIBUTE[:netrx]}=" << netrx.to_s << "\n"
    str_info << "#{POLL_ATTRIBUTE[:nettx]}=" << nettx.to_s << "\n"

    str_info << 'DISKRDBYTES=' << diskrdbytes.to_s << "\n"
    str_info << 'DISKWRBYTES=' << diskwrbytes.to_s << "\n"
    str_info << 'DISKRDIOPS='  << diskrdiops.to_s  << "\n"
    str_info << 'DISKWRIOPS='  << diskwriops.to_s  << "\n"

    str_info << 'VCENTER_ESX_HOST="' << esx_host << '" ' << "\n"
    str_info << 'VCENTER_GUEST_STATE=' << guest_state << "\n"
    str_info << 'VCENTER_VM_NAME="' << vm_name << '" ' << "\n"
    str_info << 'VCENTER_VMWARETOOLS_RUNNING_STATUS=' \
             << vmware_tools << "\n"
    str_info << 'VCENTER_VMWARETOOLS_VERSION=' << vmtools_ver << "\n"
    str_info << 'VCENTER_VMWARETOOLS_VERSION_STATUS=' \
             << vmtools_verst << "\n"
    str_info << 'VCENTER_RP_NAME="' << rp_name << '" ' << "\n"

    info_disks.each do |disk|
        next if disk[1].no_exists?

        # disk[0] contains the disk ID in OpenNebula or the disk path if
        #         there is no corresponding OpenNebula disk
        # disk[1] contains the vcenter resource corresponding to the VM disk

        # Delete special characters
        name = disk[0].gsub(/[^0-9A-Za-z]/, '_')

        str_info << "DISK_#{name}_ACTUAL_PATH=\"[" <<
            disk[1].ds.name << '] ' << disk[1].path << '" ' << "\n"
    end

    str_info
end

#monitor(stats) ⇒ Object

monitor function used when poll action is called for all vms



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# File 'lib/vm_monitor.rb', line 40

def monitor(stats)
    reset_monitor

    refresh_rate = 20 # 20 seconds between samples (realtime)

    @state = state_to_c(@vm_info['summary.runtime.powerState'])

    return if @state != VM_STATE[:active]

    cpuMhz =  @vm_info[:esx_host_cpu]

    @monitor[:used_memory] = @vm_info['summary.quickStats.hostMemoryUsage']
                             .to_i * 1024

    used_cpu = @vm_info['summary.quickStats.overallCpuUsage'].to_f / cpuMhz
    used_cpu = (used_cpu * 100).to_s
    @monitor[:used_cpu] = format('%.2f', used_cpu).to_s

    # Check for negative values
    @monitor[:used_memory] = 0 if @monitor[:used_memory].to_i < 0
    @monitor[:used_cpu]    = 0 if @monitor[:used_cpu].to_i < 0

    guest_ip_addresses = []
    unless self['guest.net'].empty?
        @vm_info['guest.net'].each do |net|
            next unless net.ipConfig
            next if net.ipConfig.ipAddress.empty?

            net.ipConfig.ipAddress.each do |ip|
                guest_ip_addresses << ip.ipAddress
            end
        end
    end

    @guest_ip_addresses = guest_ip_addresses.join(',')

    if stats.key?(@item)
        metrics = stats[@item][:metrics]

        nettx_kbpersec = 0
        if metrics['net.transmitted']
            metrics['net.transmitted'].each do |sample|
                nettx_kbpersec += sample if sample > 0
            end
        end

        netrx_kbpersec = 0
        if metrics['net.bytesRx']
            metrics['net.bytesRx'].each do |sample|
                netrx_kbpersec += sample if sample > 0
            end
        end

        read_kbpersec = 0
        if metrics['virtualDisk.read']
            metrics['virtualDisk.read'].each do |sample|
                read_kbpersec += sample if sample > 0
            end
        end

        read_iops = 0
        if metrics['virtualDisk.numberReadAveraged']
            metrics['virtualDisk.numberReadAveraged'].each do |sample|
                read_iops += sample if sample > 0
            end
        end

        write_kbpersec = 0
        if metrics['virtualDisk.write']
            metrics['virtualDisk.write'].each do |sample|
                write_kbpersec += sample if sample > 0
            end
        end

        write_iops = 0
        if metrics['virtualDisk.numberWriteAveraged']
            metrics['virtualDisk.numberWriteAveraged'].each do |sample|
                write_iops += sample if sample > 0
            end
        end
    else
        nettx_kbpersec = 0
        netrx_kbpersec = 0
        read_kbpersec  = 0
        read_iops      = 0
        write_kbpersec = 0
        write_iops     = 0
    end

    # Accumulate values if present
    if @one_item && @one_item['MONITORING/NETTX']
        previous_nettx = @one_item['MONITORING/NETTX'].to_i
    else
        previous_nettx = 0
    end

    if @one_item && @one_item['MONITORING/NETRX']
        previous_netrx = @one_item['MONITORING/NETRX'].to_i
    else
        previous_netrx = 0
    end

    if @one_item && @one_item['MONITORING/DISKRDIOPS']
        previous_diskrdiops = @one_item['MONITORING/DISKRDIOPS'].to_i
    else
        previous_diskrdiops = 0
    end

    if @one_item && @one_item['MONITORING/DISKWRIOPS']
        previous_diskwriops = @one_item['MONITORING/DISKWRIOPS'].to_i
    else
        previous_diskwriops = 0
    end

    if @one_item && @one_item['MONITORING/DISKRDBYTES']
        previous_diskrdbytes = @one_item['MONITORING/DISKRDBYTES'].to_i
    else
        previous_diskrdbytes = 0
    end

    if @one_item && @one_item['MONITORING/DISKWRBYTES']
        previous_diskwrbytes = @one_item['MONITORING/DISKWRBYTES'].to_i
    else
        previous_diskwrbytes = 0
    end

    @monitor[:nettx] = previous_nettx +
                       (nettx_kbpersec * 1024 * refresh_rate).to_i
    @monitor[:netrx] = previous_netrx +
                       (netrx_kbpersec * 1024 * refresh_rate).to_i

    @monitor[:diskrdiops]  = previous_diskrdiops + read_iops
    @monitor[:diskwriops]  = previous_diskwriops + write_iops
    @monitor[:diskrdbytes] = previous_diskrdbytes +
                             (read_kbpersec * 1024 * refresh_rate).to_i
    @monitor[:diskwrbytes] = previous_diskwrbytes +
                             (write_kbpersec * 1024 * refresh_rate).to_i
end

#reset_monitor ⇒ Object 



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# File 'lib/vm_monitor.rb', line 292

def reset_monitor
    @monitor = {
        :used_cpu    => 0,
        :used_memory => 0,
        :netrx       => 0,
        :nettx       => 0,
        :diskrdbytes => 0,
        :diskwrbytes => 0,
        :diskrdiops  => 0,
        :diskwriops  => 0
    }
end

#state_to_c(state) ⇒ Object

Converts the VI string state to OpenNebula state convention Guest states are:

  • poweredOff The virtual machine is currently powered off.

  • poweredOn The virtual machine is currently powered on.

  • suspended The virtual machine is currently suspended.



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# File 'lib/vm_monitor.rb', line 26

def state_to_c(state)
    case state
    when 'poweredOn'
        VM_STATE[:active]
    when 'suspended'
        VM_STATE[:paused]
    when 'poweredOff'
        VM_STATE[:deleted]
    else
        VM_STATE[:unknown]
    end
end