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libvirt_exporter.go
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libvirt_exporter.go
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// Copyright 2021 Aleksei Zakharov, https://alexzzz.ru/
// Copyright 2017 Kumina, https://kumina.nl/
// 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
//
// http://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.
// Project forked from https://github.com/kumina/libvirt_exporter
// And then forked from https://github.com/rumanzo/libvirt_exporter_improved
package main
import (
"encoding/xml"
"fmt"
"log"
"net/http"
"os"
"strconv"
"github.com/Tinkoff/libvirt-exporter/libvirtSchema"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"gopkg.in/alecthomas/kingpin.v2"
"libvirt.org/go/libvirt"
)
var (
Version = ""
libvirtUpDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "", "up"),
"Whether scraping libvirt's metrics was successful.",
nil,
nil)
libvirtPoolInfoCapacity = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "pool_info", "capacity_bytes"),
"Pool capacity, in bytes",
[]string{"pool"},
nil)
libvirtPoolInfoAllocation = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "pool_info", "allocation_bytes"),
"Pool allocation, in bytes",
[]string{"pool"},
nil)
libvirtPoolInfoAvailable = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "pool_info", "available_bytes"),
"Pool available, in bytes",
[]string{"pool"},
nil)
libvirtVersionsInfoDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "", "versions_info"),
"Versions of virtualization components",
[]string{"hypervisor_running", "libvirtd_running", "libvirt_library"},
nil)
libvirtDomainInfoMetaDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_info", "meta"),
"Domain metadata",
[]string{"domain", "uuid", "instance_name", "flavor", "user_name", "user_uuid", "project_name", "project_uuid", "root_type", "root_uuid"},
nil)
libvirtDomainInfoMaxMemBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_info", "maximum_memory_bytes"),
"Maximum allowed memory of the domain, in bytes.",
[]string{"domain"},
nil)
libvirtDomainInfoMemoryUsageBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_info", "memory_usage_bytes"),
"Memory usage of the domain, in bytes.",
[]string{"domain"},
nil)
libvirtDomainInfoNrVirtCPUDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_info", "virtual_cpus"),
"Number of virtual CPUs for the domain.",
[]string{"domain"},
nil)
libvirtDomainInfoCPUTimeDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_info", "cpu_time_seconds_total"),
"Amount of CPU time used by the domain, in seconds.",
[]string{"domain"},
nil)
libvirtDomainInfoVirDomainState = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_info", "vstate"),
"Virtual domain state. 0: no state, 1: the domain is running, 2: the domain is blocked on resource,"+
" 3: the domain is paused by user, 4: the domain is being shut down, 5: the domain is shut off,"+
"6: the domain is crashed, 7: the domain is suspended by guest power management",
[]string{"domain"},
nil)
libvirtDomainVcpuTimeDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_vcpu", "time_seconds_total"),
"Amount of CPU time used by the domain's VCPU, in seconds.",
[]string{"domain", "vcpu"},
nil)
libvirtDomainVcpuDelayDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_vcpu", "delay_seconds_total"),
"Amount of CPU time used by the domain's VCPU, in seconds. "+
"Vcpu's delay metric. Time the vcpu thread was enqueued by the "+
"host scheduler, but was waiting in the queue instead of running. "+
"Exposed to the VM as a steal time.",
[]string{"domain", "vcpu"},
nil)
libvirtDomainVcpuStateDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_vcpu", "state"),
"VCPU state. 0: offline, 1: running, 2: blocked",
[]string{"domain", "vcpu"},
nil)
libvirtDomainVcpuCPUDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_vcpu", "cpu"),
"Real CPU number, or one of the values from virVcpuHostCpuState",
[]string{"domain", "vcpu"},
nil)
libvirtDomainVcpuWaitDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_vcpu", "wait_seconds_total"),
"Vcpu's wait_sum metric. CONFIG_SCHEDSTATS has to be enabled",
[]string{"domain", "vcpu"},
nil)
libvirtDomainMetaBlockDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block", "meta"),
"Block device metadata info. Device name, source file, serial.",
[]string{"domain", "target_device", "source_file", "serial", "bus", "disk_type", "driver_type", "cache", "discard"},
nil)
libvirtDomainBlockRdBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "read_bytes_total"),
"Number of bytes read from a block device, in bytes.",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockRdReqDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "read_requests_total"),
"Number of read requests from a block device.",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockRdTotalTimeSecondsDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "read_time_seconds_total"),
"Total time spent on reads from a block device, in seconds.",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWrBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "write_bytes_total"),
"Number of bytes written to a block device, in bytes.",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWrReqDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "write_requests_total"),
"Number of write requests to a block device.",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWrTotalTimesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "write_time_seconds_total"),
"Total time spent on writes on a block device, in seconds",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockFlushReqDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "flush_requests_total"),
"Total flush requests from a block device.",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockFlushTotalTimeSecondsDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "flush_time_seconds_total"),
"Total time in seconds spent on cache flushing to a block device",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockAllocationDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "allocation"),
"Offset of the highest written sector on a block device.",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockCapacityBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "capacity_bytes"),
"Logical size in bytes of the block device backing image.",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockPhysicalSizeBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "physicalsize_bytes"),
"Physical size in bytes of the container of the backing image.",
[]string{"domain", "target_device"},
nil)
// Block IO tune parameters
// Limits
libvirtDomainBlockTotalBytesSecDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_total_bytes"),
"Total throughput limit in bytes per second",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWriteBytesSecDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_write_bytes"),
"Write throughput limit in bytes per second",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockReadBytesSecDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_read_bytes"),
"Read throughput limit in bytes per second",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockTotalIopsSecDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_total_requests"),
"Total requests per second limit",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWriteIopsSecDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_write_requests"),
"Write requests per second limit",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockReadIopsSecDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_read_requests"),
"Read requests per second limit",
[]string{"domain", "target_device"},
nil)
// Burst limits
libvirtDomainBlockTotalBytesSecMaxDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_total_bytes"),
"Total throughput burst limit in bytes per second",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWriteBytesSecMaxDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_write_bytes"),
"Write throughput burst limit in bytes per second",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockReadBytesSecMaxDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_read_bytes"),
"Read throughput burst limit in bytes per second",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockTotalIopsSecMaxDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_total_requests"),
"Total requests per second burst limit",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWriteIopsSecMaxDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_write_requests"),
"Write requests per second burst limit",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockReadIopsSecMaxDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_read_requests"),
"Read requests per second burst limit",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockTotalBytesSecMaxLengthDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_total_bytes_length_seconds"),
"Total throughput burst time in seconds",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWriteBytesSecMaxLengthDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_write_bytes_length_seconds"),
"Write throughput burst time in seconds",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockReadBytesSecMaxLengthDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_read_bytes_length_seconds"),
"Read throughput burst time in seconds",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockTotalIopsSecMaxLengthDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_length_total_requests_seconds"),
"Total requests per second burst time in seconds",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockWriteIopsSecMaxLengthDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_length_write_requests_seconds"),
"Write requests per second burst time in seconds",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockReadIopsSecMaxLengthDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "limit_burst_length_read_requests_seconds"),
"Read requests per second burst time in seconds",
[]string{"domain", "target_device"},
nil)
libvirtDomainBlockSizeIopsSecDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_block_stats", "size_iops_bytes"),
"The size of IO operations per second permitted through a block device",
[]string{"domain", "target_device"},
nil)
libvirtDomainMetaInterfacesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface", "meta"),
"Interfaces metadata. Source bridge, target device, interface uuid",
[]string{"domain", "source_bridge", "target_device", "virtual_interface"},
nil)
libvirtDomainInterfaceRxBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface_stats", "receive_bytes_total"),
"Number of bytes received on a network interface, in bytes.",
[]string{"domain", "target_device"},
nil)
libvirtDomainInterfaceRxPacketsDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface_stats", "receive_packets_total"),
"Number of packets received on a network interface.",
[]string{"domain", "target_device"},
nil)
libvirtDomainInterfaceRxErrsDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface_stats", "receive_errors_total"),
"Number of packet receive errors on a network interface.",
[]string{"domain", "target_device"},
nil)
libvirtDomainInterfaceRxDropDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface_stats", "receive_drops_total"),
"Number of packet receive drops on a network interface.",
[]string{"domain", "target_device"},
nil)
libvirtDomainInterfaceTxBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface_stats", "transmit_bytes_total"),
"Number of bytes transmitted on a network interface, in bytes.",
[]string{"domain", "target_device"},
nil)
libvirtDomainInterfaceTxPacketsDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface_stats", "transmit_packets_total"),
"Number of packets transmitted on a network interface.",
[]string{"domain", "target_device"},
nil)
libvirtDomainInterfaceTxErrsDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface_stats", "transmit_errors_total"),
"Number of packet transmit errors on a network interface.",
[]string{"domain", "target_device"},
nil)
libvirtDomainInterfaceTxDropDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_interface_stats", "transmit_drops_total"),
"Number of packet transmit drops on a network interface.",
[]string{"domain", "target_device"},
nil)
libvirtDomainMemoryStatMajorFaultTotalDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "major_fault_total"),
"Page faults occur when a process makes a valid access to virtual memory that is not available. "+
"When servicing the page fault, if disk IO is required, it is considered a major fault.",
[]string{"domain"},
nil)
libvirtDomainMemoryStatMinorFaultTotalDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "minor_fault_total"),
"Page faults occur when a process makes a valid access to virtual memory that is not available. "+
"When servicing the page not fault, if disk IO is required, it is considered a minor fault.",
[]string{"domain"},
nil)
libvirtDomainMemoryStatUnusedBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "unused_bytes"),
"The amount of memory left completely unused by the system. Memory that is available but used for "+
"reclaimable caches should NOT be reported as free. This value is expressed in bytes.",
[]string{"domain"},
nil)
libvirtDomainMemoryStatAvailableBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "available_bytes"),
"The total amount of usable memory as seen by the domain. This value may be less than the amount of "+
"memory assigned to the domain if a balloon driver is in use or if the guest OS does not initialize all "+
"assigned pages. This value is expressed in bytes.",
[]string{"domain"},
nil)
libvirtDomainMemoryStatActualBaloonBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "actual_balloon_bytes"),
"Current balloon value (in bytes).",
[]string{"domain"},
nil)
libvirtDomainMemoryStatRssBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "rss_bytes"),
"Resident Set Size of the process running the domain. This value is in bytes",
[]string{"domain"},
nil)
libvirtDomainMemoryStatUsableBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "usable_bytes"),
"How much the balloon can be inflated without pushing the guest system to swap, corresponds "+
"to 'Available' in /proc/meminfo",
[]string{"domain"},
nil)
libvirtDomainMemoryStatDiskCachesBytesDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "disk_cache_bytes"),
"The amount of memory, that can be quickly reclaimed without additional I/O (in bytes)."+
"Typically these pages are used for caching files from disk.",
[]string{"domain"},
nil)
libvirtDomainMemoryStatUsedPercentDesc = prometheus.NewDesc(
prometheus.BuildFQName("libvirt", "domain_memory_stats", "used_percent"),
"The amount of memory in percent, that used by domain.",
[]string{"domain"},
nil)
errorsMap map[string]struct{}
)
// WriteErrorOnce writes message to stdout only once
// for the error
// "err" - an error message
// "name" - name of an error, to count it
func WriteErrorOnce(err string, name string) {
if _, ok := errorsMap[name]; !ok {
log.Printf("%s", err)
errorsMap[name] = struct{}{}
}
}
// CollectDomain extracts Prometheus metrics from a libvirt domain.
func CollectDomain(ch chan<- prometheus.Metric, stat libvirt.DomainStats) error {
domainName, err := stat.Domain.GetName()
if err != nil {
return err
}
domainUUID, err := stat.Domain.GetUUIDString()
if err != nil {
return err
}
// Decode XML description of domain to get block device names, etc.
xmlDesc, err := stat.Domain.GetXMLDesc(0)
if err != nil {
return err
}
var desc libvirtSchema.Domain
err = xml.Unmarshal([]byte(xmlDesc), &desc)
if err != nil {
return err
}
// Report domain info.
info, err := stat.Domain.GetInfo()
if err != nil {
return err
}
ch <- prometheus.MustNewConstMetric(
libvirtDomainInfoMetaDesc,
prometheus.GaugeValue,
float64(1),
domainName,
domainUUID,
desc.Metadata.NovaInstance.NovaName,
desc.Metadata.NovaInstance.NovaFlavor.FlavorName,
desc.Metadata.NovaInstance.NovaOwner.NovaUser.UserName,
desc.Metadata.NovaInstance.NovaOwner.NovaUser.UserUUID,
desc.Metadata.NovaInstance.NovaOwner.NovaProject.ProjectName,
desc.Metadata.NovaInstance.NovaOwner.NovaProject.ProjectUUID,
desc.Metadata.NovaInstance.NovaRoot.RootType,
desc.Metadata.NovaInstance.NovaRoot.RootUUID)
ch <- prometheus.MustNewConstMetric(
libvirtDomainInfoMaxMemBytesDesc,
prometheus.GaugeValue,
float64(info.MaxMem)*1024,
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainInfoMemoryUsageBytesDesc,
prometheus.GaugeValue,
float64(info.Memory)*1024,
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainInfoNrVirtCPUDesc,
prometheus.GaugeValue,
float64(info.NrVirtCpu),
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainInfoCPUTimeDesc,
prometheus.CounterValue,
float64(info.CpuTime)/1000/1000/1000, // From nsec to sec
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainInfoVirDomainState,
prometheus.GaugeValue,
float64(info.State),
domainName)
domainStatsVcpu, err := stat.Domain.GetVcpus()
if err != nil {
lverr, ok := err.(libvirt.Error)
if !ok || lverr.Code != libvirt.ERR_OPERATION_INVALID {
return err
}
} else {
for _, vcpu := range domainStatsVcpu {
ch <- prometheus.MustNewConstMetric(
libvirtDomainVcpuStateDesc,
prometheus.GaugeValue,
float64(vcpu.State),
domainName,
strconv.FormatInt(int64(vcpu.Number), 10))
ch <- prometheus.MustNewConstMetric(
libvirtDomainVcpuTimeDesc,
prometheus.CounterValue,
float64(vcpu.CpuTime)/1000/1000/1000, // From nsec to sec
domainName,
strconv.FormatInt(int64(vcpu.Number), 10))
ch <- prometheus.MustNewConstMetric(
libvirtDomainVcpuCPUDesc,
prometheus.GaugeValue,
float64(vcpu.Cpu),
domainName,
strconv.FormatInt(int64(vcpu.Number), 10))
}
/* There's no Wait in GetVcpus()
* But there's no cpu number in libvirt.DomainStats
* Time and State are present in both structs
* So, let's take Wait here
*/
for cpuNum, vcpu := range stat.Vcpu {
if vcpu.WaitSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainVcpuWaitDesc,
prometheus.CounterValue,
float64(vcpu.Wait)/1000/1000/1000,
domainName,
strconv.FormatInt(int64(cpuNum), 10))
}
if vcpu.DelaySet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainVcpuDelayDesc,
prometheus.CounterValue,
float64(vcpu.Delay)/1e9,
domainName,
strconv.FormatInt(int64(cpuNum), 10))
}
}
}
// Report block device statistics.
for _, disk := range stat.Block {
var DiskSource string
var Device *libvirtSchema.Disk
// Ugly hack to avoid getting metrics from cdrom block device
// TODO: somehow check the disk 'device' field for 'cdrom' string
if disk.Name == "hdc" || disk.Name == "hda" {
continue
}
/* "block.<num>.path" - string describing the source of block device <num>,
if it is a file or block device (omitted for network
sources and drives with no media inserted). For network device (i.e. rbd) take from xml. */
for _, dev := range desc.Devices.Disks {
if dev.Target.Device == disk.Name {
if disk.PathSet {
DiskSource = disk.Path
} else {
DiskSource = dev.Source.Name
}
Device = &dev
break
}
}
ch <- prometheus.MustNewConstMetric(
libvirtDomainMetaBlockDesc,
prometheus.GaugeValue,
float64(1),
domainName,
disk.Name,
DiskSource,
Device.Serial,
Device.Target.Bus,
Device.DiskType,
Device.Driver.Type,
Device.Driver.Cache,
Device.Driver.Discard,
)
// https://libvirt.org/html/libvirt-libvirt-domain.html#virConnectGetAllDomainStats
if disk.RdBytesSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockRdBytesDesc,
prometheus.CounterValue,
float64(disk.RdBytes),
domainName,
disk.Name)
}
if disk.RdReqsSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockRdReqDesc,
prometheus.CounterValue,
float64(disk.RdReqs),
domainName,
disk.Name)
}
if disk.RdTimesSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockRdTotalTimeSecondsDesc,
prometheus.CounterValue,
float64(disk.RdTimes)/1e9,
domainName,
disk.Name)
}
if disk.WrBytesSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWrBytesDesc,
prometheus.CounterValue,
float64(disk.WrBytes),
domainName,
disk.Name)
}
if disk.WrReqsSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWrReqDesc,
prometheus.CounterValue,
float64(disk.WrReqs),
domainName,
disk.Name)
}
if disk.WrTimesSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWrTotalTimesDesc,
prometheus.CounterValue,
float64(disk.WrTimes)/1e9,
domainName,
disk.Name)
}
if disk.FlReqsSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockFlushReqDesc,
prometheus.CounterValue,
float64(disk.FlReqs),
domainName,
disk.Name)
}
if disk.FlTimesSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockFlushTotalTimeSecondsDesc,
prometheus.CounterValue,
float64(disk.FlTimes)/1e9,
domainName,
disk.Name)
}
if disk.AllocationSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockAllocationDesc,
prometheus.GaugeValue,
float64(disk.Allocation),
domainName,
disk.Name)
}
if disk.CapacitySet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockCapacityBytesDesc,
prometheus.GaugeValue,
float64(disk.Capacity),
domainName,
disk.Name)
}
if disk.PhysicalSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockPhysicalSizeBytesDesc,
prometheus.GaugeValue,
float64(disk.Physical),
domainName,
disk.Name)
}
blockIOTuneParams, err := stat.Domain.GetBlockIoTune(disk.Name, 0)
if err != nil {
lverr, ok := err.(libvirt.Error)
if !ok {
switch lverr.Code {
case libvirt.ERR_OPERATION_INVALID:
// This should be one-shot error
log.Printf("Invalid operation GetBlockIoTune: %s", err.Error())
case libvirt.ERR_OPERATION_UNSUPPORTED:
WriteErrorOnce("Unsupported operation GetBlockIoTune: "+err.Error(), "blkiotune_unsupported")
default:
return err
}
}
} else {
if blockIOTuneParams.TotalBytesSecSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockTotalBytesSecDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.TotalBytesSec),
domainName,
disk.Name)
}
if blockIOTuneParams.ReadBytesSecSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockReadBytesSecDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.ReadBytesSec),
domainName,
disk.Name)
}
if blockIOTuneParams.WriteBytesSecSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWriteBytesSecDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.WriteBytesSec),
domainName,
disk.Name)
}
if blockIOTuneParams.TotalIopsSecSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockTotalIopsSecDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.TotalIopsSec),
domainName,
disk.Name)
}
if blockIOTuneParams.ReadIopsSecSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockReadIopsSecDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.ReadIopsSec),
domainName,
disk.Name)
}
if blockIOTuneParams.WriteIopsSecSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWriteIopsSecDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.WriteIopsSec),
domainName,
disk.Name)
}
if blockIOTuneParams.TotalBytesSecMaxSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockTotalBytesSecMaxDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.TotalBytesSecMax),
domainName,
disk.Name)
}
if blockIOTuneParams.ReadBytesSecMaxSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockReadBytesSecMaxDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.ReadBytesSecMax),
domainName,
disk.Name)
}
if blockIOTuneParams.WriteBytesSecMaxSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWriteBytesSecMaxDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.WriteBytesSecMax),
domainName,
disk.Name)
}
if blockIOTuneParams.TotalIopsSecMaxSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockTotalIopsSecMaxDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.TotalIopsSecMax),
domainName,
disk.Name)
}
if blockIOTuneParams.ReadIopsSecMaxSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockReadIopsSecMaxDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.ReadIopsSecMax),
domainName,
disk.Name)
}
if blockIOTuneParams.WriteIopsSecMaxSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWriteIopsSecMaxDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.WriteIopsSecMax),
domainName,
disk.Name)
}
if blockIOTuneParams.TotalBytesSecMaxLengthSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockTotalBytesSecMaxLengthDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.TotalBytesSecMaxLength),
domainName,
disk.Name)
}
if blockIOTuneParams.ReadBytesSecMaxLengthSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockReadBytesSecMaxLengthDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.ReadBytesSecMaxLength),
domainName,
disk.Name)
}
if blockIOTuneParams.WriteBytesSecMaxLengthSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWriteBytesSecMaxLengthDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.WriteBytesSecMaxLength),
domainName,
disk.Name)
}
if blockIOTuneParams.TotalIopsSecMaxLengthSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockTotalIopsSecMaxLengthDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.TotalIopsSecMaxLength),
domainName,
disk.Name)
}
if blockIOTuneParams.ReadIopsSecMaxLengthSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockReadIopsSecMaxLengthDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.ReadIopsSecMaxLength),
domainName,
disk.Name)
}
if blockIOTuneParams.WriteIopsSecMaxLengthSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockWriteIopsSecMaxLengthDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.WriteIopsSecMaxLength),
domainName,
disk.Name)
}
if blockIOTuneParams.SizeIopsSecSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainBlockSizeIopsSecDesc,
prometheus.GaugeValue,
float64(blockIOTuneParams.SizeIopsSec),
domainName,
disk.Name)
}
}
}
// Report network interface statistics.
for _, iface := range stat.Net {
var SourceBridge string
var VirtualInterface string
// Additional info for ovs network
for _, net := range desc.Devices.Interfaces {
if net.Target.Device == iface.Name {
SourceBridge = net.Source.Bridge
VirtualInterface = net.Virtualport.Parameters.InterfaceID
break
}
}
if SourceBridge != "" || VirtualInterface != "" {
ch <- prometheus.MustNewConstMetric(
libvirtDomainMetaInterfacesDesc,
prometheus.GaugeValue,
float64(1),
domainName,
SourceBridge,
iface.Name,
VirtualInterface)
}
if iface.RxBytesSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainInterfaceRxBytesDesc,
prometheus.CounterValue,
float64(iface.RxBytes),
domainName,
iface.Name)
}
if iface.RxPktsSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainInterfaceRxPacketsDesc,
prometheus.CounterValue,
float64(iface.RxPkts),
domainName,
iface.Name)
}
if iface.RxErrsSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainInterfaceRxErrsDesc,
prometheus.CounterValue,
float64(iface.RxErrs),
domainName,
iface.Name)
}
if iface.RxDropSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainInterfaceRxDropDesc,
prometheus.CounterValue,
float64(iface.RxDrop),
domainName,
iface.Name)
}
if iface.TxBytesSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainInterfaceTxBytesDesc,
prometheus.CounterValue,
float64(iface.TxBytes),
domainName,
iface.Name)
}
if iface.TxPktsSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainInterfaceTxPacketsDesc,
prometheus.CounterValue,
float64(iface.TxPkts),
domainName,
iface.Name)
}
if iface.TxErrsSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainInterfaceTxErrsDesc,
prometheus.CounterValue,
float64(iface.TxErrs),
domainName,
iface.Name)
}
if iface.TxDropSet {
ch <- prometheus.MustNewConstMetric(
libvirtDomainInterfaceTxDropDesc,
prometheus.CounterValue,
float64(iface.TxDrop),
domainName,
iface.Name)
}
}
// Collect Memory Stats
memorystat, err := stat.Domain.MemoryStats(11, 0)
var MemoryStats libvirtSchema.VirDomainMemoryStats
var usedPercent float64
if err == nil {
MemoryStats = memoryStatCollect(&memorystat)
if MemoryStats.Usable != 0 && MemoryStats.Available != 0 {
usedPercent = (float64(MemoryStats.Available) - float64(MemoryStats.Usable)) / (float64(MemoryStats.Available) / float64(100))
}
}
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatMajorFaultTotalDesc,
prometheus.CounterValue,
float64(MemoryStats.MajorFault),
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatMinorFaultTotalDesc,
prometheus.CounterValue,
float64(MemoryStats.MinorFault),
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatUnusedBytesDesc,
prometheus.GaugeValue,
float64(MemoryStats.Unused)*1024,
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatAvailableBytesDesc,
prometheus.GaugeValue,
float64(MemoryStats.Available)*1024,
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatActualBaloonBytesDesc,
prometheus.GaugeValue,
float64(MemoryStats.ActualBalloon)*1024,
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatRssBytesDesc,
prometheus.GaugeValue,
float64(MemoryStats.Rss)*1024,
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatUsableBytesDesc,
prometheus.GaugeValue,
float64(MemoryStats.Usable)*1024,
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatDiskCachesBytesDesc,
prometheus.GaugeValue,
float64(MemoryStats.DiskCaches)*1024,
domainName)
ch <- prometheus.MustNewConstMetric(
libvirtDomainMemoryStatUsedPercentDesc,
prometheus.GaugeValue,
float64(usedPercent),
domainName)
return nil
}
// Collect Storage pool stats
func CollectStoragePool(ch chan<- prometheus.Metric, pool libvirt.StoragePool) error {
// Refresh pool
err := pool.Refresh(0)
if err != nil {
return err
}
pool_name, err := pool.GetName()
if err != nil {
return err
}
pool_info, err := pool.GetInfo()
if err != nil {
return err
}
// Send metrics to channel
ch <- prometheus.MustNewConstMetric(
libvirtPoolInfoCapacity,
prometheus.GaugeValue,
float64(pool_info.Capacity),
pool_name)
ch <- prometheus.MustNewConstMetric(
libvirtPoolInfoAllocation,
prometheus.GaugeValue,
float64(pool_info.Allocation),
pool_name)
ch <- prometheus.MustNewConstMetric(
libvirtPoolInfoAvailable,
prometheus.GaugeValue,
float64(pool_info.Available),
pool_name)
return nil
}