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GNU GENERAL PUBLIC LICENSE
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# Collect VMware vSphere, vCenter and ESXi performance metrics and send them to InfluxDB
# Extenal dependencies
* [govmomi](https://github.com/vmware/govmomi)
* [influxDB go client](https://github.com/influxdata/influxdb/tree/master/client/v2)
You'll need to go get them both for the script to work:
```
go get github.com/vmware/govmomi
go get github.com/influxdata/influxdb/tree/master/client/v2
```
# Run
```
go get github.com/oxalide/vsphere-influxdb-go
```
This will install the project in your $GOBIN($GOPATH/bin). If you have appended $GOBIN to your $PATH, you will be able to call it directly. Otherwise, you'll have to call it with its full path.
Example:
```
vsphere-influxdb-go
```
or :
```
$GOBIN/vsphere-influxdb-go
```
# Configure
You'll need a JSON file with all your vCenters/ESXi to connect to, the InfluxDB connection details(url, username/password, database to use), and the metrics to collect.
If you set a domain, it will be automaticaly removed from the names of the found objects.
Metrics collected are defined by associating ObjectType groups with Metric groups.
To see all available metrics, check out [this](http://www.virten.net/2015/05/vsphere-6-0-performance-counter-description/) page.
Note: Not all metrics are available directly, you might need to change your metric collection level.
A table with the level needed for each metric is availble [here](http://www.virten.net/2015/05/which-performance-counters-are-available-in-each-statistic-level/), and you can find a PowerCLI script that changes the collect level [here](http://www.valcolabs.com/2012/02/06/modify-historical-statistics-level-using-powercli/)
An example of configuration file is [here](./vsphere-influxdb-go.json).
You need to place it at /etc/*binaryname*.json (/etc/vsphere-influxdb-go.json by default)
# Run as a service
Create a crontab to run it every X minutes(one minute is fine - in our case, ~30 vCenters, ~100 ESXi and ~1400 VMs take approximately 25s to collect all metrics - rather impressive, i might add).
```
* * * * * $HOME/work/go/bin/vsphere-influxdb-go
```
# TODO
* Add service discovery(or probably something like [Viper](https://github.com/spf13/viper) for easier and more flexible configuration with multiple backends)
* Add extra tags(cluster for the hosts, etc.)
# Contributing
You are welcome to contribute!
# License
The original project, upon which this one is based, is written by cblomart, sends the data to Graphite, and is available [here](https://github.com/cblomart/vsphere-graphite).
This one is licensed under GPLv3. You can find a copy of the license in [LICENSE.txt](./LICENSE.txt)

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/* Copyright 2016 Adrian Todorov, Oxalide ato@oxalide.com
Original project author: https://github.com/cblomart
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package main
import (
"encoding/json"
"fmt"
"log"
"math"
"net/url"
"os"
"path"
"strings"
"time"
"golang.org/x/net/context"
"github.com/vmware/govmomi"
"github.com/vmware/govmomi/vim25/methods"
"github.com/vmware/govmomi/vim25/mo"
"github.com/vmware/govmomi/vim25/types"
"github.com/vmware/govmomi/property"
influxclient "github.com/influxdata/influxdb/client/v2"
)
const (
// name of the service
name = "vsphere-influxdb"
description = "send vsphere stats to influxdb"
)
// Configuration
type Configuration struct {
VCenters []*VCenter
Metrics []Metric
Interval int
Domain string
InfluxDB InfluxDB
}
// InfluxDB description
type InfluxDB struct {
Hostname string
Username string
Password string
Database string
}
// VCenter description
type VCenter struct {
Hostname string
Username string
Password string
MetricGroups []*MetricGroup
}
// Metric Definition
type MetricDef struct {
Metric string
Instances string
Key int32
}
// Metrics description in config
var vm_refs []types.ManagedObjectReference
type Metric struct {
ObjectType []string
Definition []MetricDef
}
// Metric Grouping for retrieval
type MetricGroup struct {
ObjectType string
Metrics []MetricDef
Mor []types.ManagedObjectReference
}
// Informations to query about an entity
type EntityQuery struct {
Name string
Entity types.ManagedObjectReference
Metrics []int32
}
// A few global variables
var dependencies = []string{}
var stdlog, errlog *log.Logger
func (vcenter *VCenter) Connect() (*govmomi.Client, error) {
// Prepare vCenter Connections
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
stdlog.Println("connecting to vcenter: " + vcenter.Hostname)
u, err := url.Parse("https://" + vcenter.Username + ":" + vcenter.Password + "@" + vcenter.Hostname + "/sdk")
if err != nil {
errlog.Println("Could not parse vcenter url: ", vcenter.Hostname)
errlog.Println("Error: ", err)
return nil, err
}
client, err := govmomi.NewClient(ctx, u, true)
if err != nil {
errlog.Println("Could not connect to vcenter: ", vcenter.Hostname)
errlog.Println("Error: ", err)
return nil, err
}
return client, nil
}
// Initialise vcenter
func (vcenter *VCenter) Init(config Configuration) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
client, err := vcenter.Connect()
defer client.Logout(ctx)
if err != nil {
errlog.Println("Could not connect to vcenter: ", vcenter.Hostname)
errlog.Println("Error: ", err)
return
}
var perfmanager mo.PerformanceManager
err = client.RetrieveOne(ctx, *client.ServiceContent.PerfManager, nil, &perfmanager)
if err != nil {
errlog.Println("Could not get performance manager")
errlog.Println("Error: ", err)
return
}
for _, perf := range perfmanager.PerfCounter {
groupinfo := perf.GroupInfo.GetElementDescription()
nameinfo := perf.NameInfo.GetElementDescription()
identifier := groupinfo.Key + "." + nameinfo.Key + "." + fmt.Sprint(perf.RollupType)
for _, metric := range config.Metrics {
for _, metricdef := range metric.Definition {
if metricdef.Metric == identifier {
metricd := MetricDef{Metric: metricdef.Metric, Instances: metricdef.Instances, Key: perf.Key}
for _, mtype := range metric.ObjectType {
added := false
for _, metricgroup := range vcenter.MetricGroups {
if metricgroup.ObjectType == mtype {
metricgroup.Metrics = append(metricgroup.Metrics, metricd)
added = true
break
}
}
if added == false {
metricgroup := MetricGroup{ObjectType: mtype, Metrics: []MetricDef{metricd}}
vcenter.MetricGroups = append(vcenter.MetricGroups, &metricgroup)
}
}
}
}
}
}
}
// Query a vcenter
func (vcenter *VCenter) Query(config Configuration, InfluxDBClient influxclient.Client) {
stdlog.Println("Setting up query inventory of vcenter: ", vcenter.Hostname)
// Create the contect
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Get the client
client, err := vcenter.Connect()
defer client.Logout(ctx)
if err != nil {
errlog.Println("Could not connect to vcenter: ", vcenter.Hostname)
errlog.Println("Error: ", err)
return
}
// Create the view manager
var viewManager mo.ViewManager
err = client.RetrieveOne(ctx, *client.ServiceContent.ViewManager, nil, &viewManager)
if err != nil {
errlog.Println("Could not get view manager from vcenter: " + vcenter.Hostname)
errlog.Println("Error: ", err)
return
}
// Get the Datacenters from root folder
var rootFolder mo.Folder
err = client.RetrieveOne(ctx, client.ServiceContent.RootFolder, nil, &rootFolder)
if err != nil {
errlog.Println("Could not get root folder from vcenter: " + vcenter.Hostname)
errlog.Println("Error: ", err)
return
}
datacenters := []types.ManagedObjectReference{}
for _, child := range rootFolder.ChildEntity {
if child.Type == "Datacenter" {
datacenters = append(datacenters, child)
}
}
// Get intresting object types from specified queries
objectTypes := []string{}
for _, group := range vcenter.MetricGroups {
objectTypes = append(objectTypes, group.ObjectType)
}
objectTypes = append(objectTypes, "ClusterComputeResource")
// Loop trought datacenters and create the intersting object reference list
mors := []types.ManagedObjectReference{}
for _, datacenter := range datacenters {
// Create the CreateContentView request
req := types.CreateContainerView{This: viewManager.Reference(), Container: datacenter, Type: objectTypes, Recursive: true}
res, err := methods.CreateContainerView(ctx, client.RoundTripper, &req)
if err != nil {
errlog.Println("Could not create container view from vcenter: " + vcenter.Hostname)
errlog.Println("Error: ", err)
continue
}
// Retrieve the created ContentView
var containerView mo.ContainerView
err = client.RetrieveOne(ctx, res.Returnval, nil, &containerView)
if err != nil {
errlog.Println("Could not get container view from vcenter: " + vcenter.Hostname)
errlog.Println("Error: ", err)
continue
}
// Add found object to object list
mors = append(mors, containerView.View...)
}
// Create MORS for each object type
vm_refs := []types.ManagedObjectReference{}
host_refs := []types.ManagedObjectReference{}
cluster_refs := []types.ManagedObjectReference{}
new_mors := []types.ManagedObjectReference{}
// Assign each MORS type to a specific array
for _, mor := range mors {
if mor.Type == "VirtualMachine" {
vm_refs = append(vm_refs, mor)
new_mors = append(new_mors, mor)
} else if mor.Type == "HostSystem" {
host_refs = append(host_refs, mor)
new_mors = append(new_mors, mor)
} else if mor.Type == "ClusterComputeResource" {
cluster_refs = append(cluster_refs, mor)
}
}
// Copy the mors without the clusters
mors = new_mors
pc := property.DefaultCollector(client.Client)
// Retrieve properties for all vms
var vmmo []mo.VirtualMachine
err = pc.Retrieve(ctx, vm_refs, []string{"summary"}, &vmmo)
if err != nil {
fmt.Println(err)
return
}
// Retrieve properties for hosts
var hsmo []mo.HostSystem
err = pc.Retrieve(ctx, host_refs, []string{"summary"}, &hsmo)
if err != nil {
fmt.Println(err)
return
}
// Initialize the map that will hold the VM MOR to cluster reference
vmToCluster := make(map[types.ManagedObjectReference]string)
// Retrieve properties for clusters, if any
if len(cluster_refs) > 0 {
var clmo []mo.ClusterComputeResource
err = pc.Retrieve(ctx, cluster_refs, []string{"name", "configuration"}, &clmo)
if err != nil {
fmt.Println(err)
return
}
for _, cl := range clmo {
for _, vm := range cl.Configuration.DasVmConfig {
vmToCluster[vm.Key] = cl.Name
}
}
}
// Initialize the map that will hold all extra tags
vm_summary := make(map[types.ManagedObjectReference]map[string]string)
// Assign extra details per VM in vm_summary
for _,vm := range vmmo {
vm_summary[vm.Self] = make(map[string]string)
summary := fmt.Sprintln(vm.Summary.Config)
if summary != "" {
vmc := strings.Split(fmt.Sprintln(vm.Summary.Config), " ")
vm_summary[vm.Self]["datastore"] = vmc[3][1:len(vmc[3])-1]
if vmToCluster[vm.Self] != "" {
vm_summary[vm.Self]["cluster"] = vmToCluster[vm.Self]
}
}
}
// get object names
objects := []mo.ManagedEntity{}
//object for propery collection
propSpec := &types.PropertySpec{Type: "ManagedEntity", PathSet: []string{"name"}}
var objectSet []types.ObjectSpec
for _, mor := range mors {
objectSet = append(objectSet, types.ObjectSpec{Obj: mor, Skip: types.NewBool(false)})
}
//retrieve name property
propreq := types.RetrieveProperties{SpecSet: []types.PropertyFilterSpec{{ObjectSet: objectSet, PropSet: []types.PropertySpec{*propSpec}}}}
propres, err := client.PropertyCollector().RetrieveProperties(ctx, propreq)
if err != nil {
errlog.Println("Could not retrieve object names from vcenter: " + vcenter.Hostname)
errlog.Println("Error: ", err)
return
}
//load retrieved properties
err = mo.LoadRetrievePropertiesResponse(propres, &objects)
if err != nil {
errlog.Println("Could not retrieve object names from vcenter: " + vcenter.Hostname)
errlog.Println("Error: ", err)
return
}
//create a map to resolve object names
morToName := make(map[types.ManagedObjectReference]string)
for _, object := range objects {
morToName[object.Self] = object.Name
}
//create a map to resolve metric names
metricToName := make(map[int32]string)
for _, metricgroup := range vcenter.MetricGroups {
for _, metricdef := range metricgroup.Metrics {
metricToName[metricdef.Key] = metricdef.Metric
}
}
// Create Queries from interesting objects and requested metrics
queries := []types.PerfQuerySpec{}
// Common parameters
intervalIdint := 20
var intervalId int32
intervalId = int32(intervalIdint)
endTime := time.Now().Add(time.Duration(-1) * time.Second)
startTime := endTime.Add(time.Duration(-config.Interval) * time.Second)
// Parse objects
for _, mor := range mors {
metricIds := []types.PerfMetricId{}
for _, metricgroup := range vcenter.MetricGroups {
if metricgroup.ObjectType == mor.Type {
for _, metricdef := range metricgroup.Metrics {
metricIds = append(metricIds, types.PerfMetricId{CounterId: metricdef.Key, Instance: metricdef.Instances})
}
}
}
queries = append(queries, types.PerfQuerySpec{Entity: mor, StartTime: &startTime, EndTime: &endTime, MetricId: metricIds, IntervalId: intervalId})
}
// Query the performances
perfreq := types.QueryPerf{This: *client.ServiceContent.PerfManager, QuerySpec: queries}
perfres, err := methods.QueryPerf(ctx, client.RoundTripper, &perfreq)
if err != nil {
errlog.Println("Could not request perfs from vcenter: " + vcenter.Hostname)
errlog.Println("Error: ", err)
return
}
// Get the result
vcName := strings.Replace(vcenter.Hostname, config.Domain, "", -1)
//Influx batch points
bp,err := influxclient.NewBatchPoints(influxclient.BatchPointsConfig {
Database: config.InfluxDB.Database,
Precision: "s",
})
if err != nil {
errlog.Println(err)
}
for _, base := range perfres.Returnval {
pem := base.(*types.PerfEntityMetric)
entityName := strings.ToLower(pem.Entity.Type)
name := strings.ToLower(strings.Replace(morToName[pem.Entity], config.Domain, "", -1))
//Create map for InfluxDB fields
fields := make(map[string]interface{})
// special_fields := make(map[string]map[string]interface{})
// Create map for InfluxDB tags
tags := map[string]string{"host": vcName, "name": name}
// Add extra per VM tags
if summary, ok := vm_summary[pem.Entity]; ok {
for key, tag := range summary {
tags[key] = tag
}
}
for _, baseserie := range pem.Value {
serie := baseserie.(*types.PerfMetricIntSeries)
metricName := strings.ToLower(metricToName[serie.Id.CounterId])
influxMetricName := strings.Replace(metricName, ".", "_", -1)
// instanceName := strings.ToLower(strings.Replace(serie.Id.Instance, ".", "_", -1))
var value int64 = -1
if strings.HasSuffix(metricName, ".average") {
value = average(serie.Value...)
} else if strings.HasSuffix(metricName, ".maximum") {
value = max(serie.Value...)
} else if strings.HasSuffix(metricName, ".minimum") {
value = min(serie.Value...)
}else if strings.HasSuffix(metricName, ".latest") {
value = serie.Value[len(serie.Value)-1]
} else if strings.HasSuffix(metricName, ".summation") {
value = sum(serie.Value...)
}
// Add to fields
// TODO one day
// if this is a specific metric for a specific instance(CPU, disk, network interface), add to points directly
// if len(instanceName) > 0 {
// special_fields[instanceName][influxMetricName] = value
//
// else:
if field, ok := fields[influxMetricName]; ok {
fields[influxMetricName] = value + field.(int64)
} else {
fields[influxMetricName] = value
}
}
//create InfluxDB points
pt,err := influxclient.NewPoint(entityName, tags, fields, time.Now())
if err != nil {
errlog.Println(err)
}
bp.AddPoint(pt)
/*
if len(special_fields) > 0 {
for instance, metrics := special_fields {
tags["instance"] = instance
pt,err := influxclient.NewPoint(strings.Split(metrics[0], "_")[0], tags, metrics, time.Now())
if err != nil {
errlog.Println(err)
}
}
}
*/
}
//InfluxDB send
err = InfluxDBClient.Write(bp)
if err != nil {
errlog.Println(err)
} else {
stdlog.Println("sent data to Influxdb")
}
}
func min(n ...int64) int64 {
var min int64 = -1
for _, i := range n {
if i >= 0 {
if min == -1 {
min = i
} else {
if i < min {
min = i
}
}
}
}
return min
}
func max(n ...int64) int64 {
var max int64 = -1
for _, i := range n {
if i >= 0 {
if max == -1 {
max = i
} else {
if i > max {
max = i
}
}
}
}
return max
}
func sum(n ...int64) int64 {
var total int64 = 0
for _, i := range n {
if i > 0 {
total += i
}
}
return total
}
func average(n ...int64) int64 {
var total int64 = 0
var count int64 = 0
for _, i := range n {
if i >= 0 {
count += 1
total += i
}
}
favg := float64(total) / float64(count)
return int64(math.Floor(favg + .5))
}
func queryVCenter(vcenter VCenter, config Configuration, InfluxDBClient influxclient.Client) {
stdlog.Println("Querying vcenter")
vcenter.Query(config, InfluxDBClient)
}
func main() {
stdlog = log.New(os.Stdout, "", log.Ldate|log.Ltime)
errlog = log.New(os.Stderr, "", log.Ldate|log.Ltime)
stdlog.Println("Starting :", path.Base(os.Args[0]))
// read the configuration
file, err := os.Open("/etc/" + path.Base(os.Args[0]) + ".json")
if err != nil {
errlog.Println("Could not open configuration file")
errlog.Println(err)
}
jsondec := json.NewDecoder(file)
config := Configuration{}
err = jsondec.Decode(&config)
if err != nil {
errlog.Println("Could not decode configuration file")
errlog.Println(err)
}
for _, vcenter := range config.VCenters {
vcenter.Init(config)
}
InfluxDBClient, err := influxclient.NewHTTPClient(influxclient.HTTPConfig {
Addr: config.InfluxDB.Hostname,
Username: config.InfluxDB.Username,
Password: config.InfluxDB.Password,
})
if err != nil {
errlog.Println("Could not connect to InfluxDB")
errlog.Println(err)
} else {
stdlog.Println("Successfully connected to Influx\n")
}
for _, vcenter := range config.VCenters {
queryVCenter(*vcenter, config, InfluxDBClient)
}
}

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{
"Domain": ".lab",
"Interval": 60,
"VCenters": [
{ "Username": "monitoring", "Password": "monixx", "Hostname": "vcenter-01.dc-01.lab" },
{ "Username": "monitoring", "Password": "monixx", "Hostname": "vcenter-01.dc-02.lab" },
{ "Username": "monitoring", "Password": "monixx", "Hostname": "vcenter-02.dc-02.lab" },
{ "Username": "monitoring", "Password": "monixx", "Hostname": "vcenter-01.home.lab" }
],
"InfluxDB": {
"Hostname": "http://influxdb-01.dc-01.lab:8086",
"Username": "vm",
"Password": "vmware334",
"Database": "vmware_performance"
},
"Metrics": [
{
"ObjectType": [ "VirtualMachine", "HostSystem" ],
"Definition": [
{ "Metric": "cpu.usage.average", "Instances": "*" },
{ "Metric": "cpu.usage.maximum", "Instances": "*" },
{ "Metric": "cpu.usagemhz.average", "Instances": "*" },
{ "Metric": "cpu.usagemhz.maximum", "Instances": "*" },
{ "Metric": "cpu.wait.summation", "Instances": "*" },
{ "Metric": "cpu.system.summation", "Instances": "*" },
{ "Metric": "cpu.ready.summation", "Instances": "*" },
{ "Metric": "mem.usage.average", "Instances": "*" },
{ "Metric": "mem.usage.maximum", "Instances": "*" },
{ "Metric": "mem.consumed.average", "Instances": "*" },
{ "Metric": "mem.consumed.maximum", "Instances": "*" },
{ "Metric": "mem.active.average", "Instances": "*" },
{ "Metric": "mem.active.maximum", "Instances": "*" },
{ "Metric": "mem.vmmemctl.average", "Instances": "*" },
{ "Metric": "mem.vmmemctl.maximum", "Instances": "*" },
{ "Metric": "mem.totalCapacity.average", "Instances": "*" },
{ "Metric": "net.packetsRx.summation", "Instances": "*" },
{ "Metric": "net.packetsTx.summation", "Instances": "*" },
{ "Metric": "net.throughput.usage.average", "Instances": "*" },
{ "Metric": "net.received.average", "Instances": "*" },
{ "Metric": "net.transmitted.average", "Instances": "*" },
{ "Metric": "net.throughput.usage.nfs.average", "Instances": "*" },
{ "Metric": "datastore.numberReadAveraged.average", "Instances": "*" },
{ "Metric": "datastore.numberWriteAveraged.average", "Instances": "*" },
{ "Metric": "datastore.read.average", "Instances": "*" },
{ "Metric": "datastore.write.average", "Instances": "*" },
{ "Metric": "datastore.totalReadLatency.average", "Instances": "*" },
{ "Metric": "datastore.totalWriteLatency.average", "Instances": "*" },
{ "Metric": "mem.capacity.provisioned.average", "Instances": "*"},
{ "Metric": "cpu.corecount.provisioned.average", "Instances": "*" }
]
},
{
"ObjectType": [ "VirtualMachine" ],
"Definition": [
{ "Metric": "datastore.datastoreVMObservedLatency.latest", "Instances": "*" }
]
},
{
"ObjectType": [ "HostSystem" ],
"Definition": [
{ "Metric": "disk.maxTotalLatency.latest", "Instances": "" },
{ "Metric": "disk.numberReadAveraged.average", "Instances": "*" },
{ "Metric": "disk.numberWriteAveraged.average", "Instances": "*" },
{ "Metric": "net.throughput.contention.summation", "Instances": "*" }
]
}
]
}