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nagios_exporter.go
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package main
import (
"bytes"
"crypto/tls"
"encoding/json"
"errors"
"flag"
"io"
"net/http"
"os/exec"
"regexp"
"strconv"
"strings"
"time"
"github.com/linode-obs/nagios_exporter/get_nagios_version"
"github.com/BurntSushi/toml"
"github.com/hashicorp/go-version"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
log "github.com/sirupsen/logrus"
)
// https://stackoverflow.com/a/16491396
type Config struct {
APIKey string
}
const namespace = "nagios"
// NagiosXI specific API endpoints
const nagiosAPIVersion = "/nagiosxi"
const apiSlug = "/api/v1"
const hoststatusAPI = "/objects/hoststatus"
const servicestatusAPI = "/objects/servicestatus"
const systeminfoAPI = "/system/info"
const systemstatusAPI = "/system/status"
const systemstatusDetailAPI = "/system/statusdetail"
const systemuserAPI = "/system/user"
type systemStatus struct {
// https://stackoverflow.com/questions/21151765/cannot-unmarshal-string-into-go-value-of-type-int64
Running float64 `json:"is_currently_running,string"`
}
type systemStatusDetail struct {
Nagioscore struct {
Activehostcheckperf struct {
AvgExecutionTime float64 `json:"avg_execution_time,string"`
AvgLatency float64 `json:"avg_latency,string"`
MaxExecutionTime float64 `json:"max_execution_time,string"`
MaxLatency float64 `json:"max_latency,string"`
MinExecutionTime float64 `json:"min_execution_time,string"`
MinLatency float64 `json:"min_latency,string"`
} `json:"activehostcheckperf"`
Activehostchecks struct {
Val1 float64 `json:"val1,string"`
Val15 float64 `json:"val15,string"`
Val5 float64 `json:"val5,string"`
} `json:"activehostchecks"`
Activeservicecheckperf struct {
AvgExecutionTime float64 `json:"avg_execution_time,string"`
AvgLatency float64 `json:"avg_latency,string"`
MaxExecutionTime float64 `json:"max_execution_time,string"`
MaxLatency float64 `json:"max_latency,string"`
MinExecutionTime float64 `json:"min_execution_time,string"`
MinLatency float64 `json:"min_latency,string"`
} `json:"activeservicecheckperf"`
Activeservicechecks struct {
Val1 float64 `json:"val1,string"`
Val15 float64 `json:"val15,string"`
Val5 float64 `json:"val5,string"`
} `json:"activeservicechecks"`
Passivehostchecks struct {
Val1 float64 `json:"val1,string"`
Val15 float64 `json:"val15,string"`
Val5 float64 `json:"val5,string"`
} `json:"passivehostchecks"`
Passiveservicechecks struct {
Val1 float64 `json:"val1,string"`
Val15 float64 `json:"val15,string"`
Val5 float64 `json:"val5,string"`
} `json:"passiveservicechecks"`
Updated string `json:"updated"`
} `json:"nagioscore"`
}
type systemInfo struct {
Version string `json:"version"`
}
// generated with https://github.com/bashtian/jsonutils
type hostStatus struct {
Recordcount float64 `json:"recordcount"`
Hoststatus []struct {
HostObjectID float64 `json:"host_object_id,string"`
CheckType float64 `json:"check_type,string"`
CurrentState float64 `json:"current_state,string"`
IsFlapping float64 `json:"is_flapping,string"`
ScheduledDowntimeDepth float64 `json:"scheduled_downtime_depth,string"`
ProblemHasBeenAcknowledged float64 `json:"problem_has_been_acknowledged,string"`
Latency float64 `json:"latency,string"`
ExecutionTime float64 `json:"execution_time,string"`
} `json:"hoststatus"`
}
type serviceStatus struct {
Recordcount float64 `json:"recordcount"`
Servicestatus []struct {
HasBeenChecked float64 `json:"has_been_checked,string"`
ShouldBeScheduled float64 `json:"should_be_scheduled,string"`
CheckType float64 `json:"check_type,string"`
CurrentState float64 `json:"current_state,string"`
IsFlapping float64 `json:"is_flapping,string"`
ScheduledDowntimeDepth float64 `json:"scheduled_downtime_depth,string"`
ProblemHasBeenAcknowledged float64 `json:"problem_has_been_acknowledged,string"`
Latency float64 `json:"latency,string"`
ExecutionTime float64 `json:"execution_time,string"`
} `json:"servicestatus"`
}
type userStatus struct {
// yes, this field is named records even though every other endpoint is `recordcount`...
Recordcount float64 `json:"records"`
Userstatus []struct {
Admin float64 `json:"admin,string"`
Enabled float64 `json:"enabled,string"`
} `json:"users"`
}
func ReadConfig(configPath string) Config {
var conf Config
if _, err := toml.DecodeFile(configPath, &conf); err != nil {
log.Fatal(err)
}
return conf
}
var (
// Build info for nagios exporter itself, will be populated by linker during build
Version string
BuildDate string
Commit string
// Metrics
up = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "up"), "Whether Nagios can be reached", nil, nil)
// Hosts
hostsTotal = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "hosts_total"), "Amount of hosts present in configuration", nil, nil)
hostsCheckedTotal = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "hosts_checked_total"), "Amount of hosts checked", []string{"check_type"}, nil)
hostsStatus = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "hosts_status_total"), "Amount of hosts in different states", []string{"status"}, nil)
hostsDowntime = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "hosts_downtime_total"), "Amount of hosts in downtime", nil, nil)
hostsProblemsAcknowledged = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "hosts_acknowledges_total"), "Amount of host problems acknowledged", nil, nil)
// naming is a little inconsistent but matches system detail buckets... whoops
hostsCheckLatency = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "host_checks_latency"), "Host check latency", []string{"check_type", "performance_type"}, nil)
hostsCheckExecution = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "host_checks_execution"), "Host check execution", []string{"check_type", "performance_type"}, nil)
// Services
servicesTotal = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "services_total"), "Amount of services present in configuration", nil, nil)
servicesCheckedTotal = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "services_checked_total"), "Amount of services checked", []string{"check_type"}, nil)
servicesStatus = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "services_status_total"), "Amount of services in different states", []string{"status"}, nil)
servicesDowntime = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "services_downtime_total"), "Amount of services in downtime", nil, nil)
servicesProblemsAcknowledged = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "services_acknowledges_total"), "Amount of service problems acknowledged", nil, nil)
servicesCheckLatency = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "service_checks_latency"), "Service check latency", []string{"check_type", "performance_type"}, nil)
servicesCheckExecution = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "service_checks_execution"), "Service check execution", []string{"check_type", "performance_type"}, nil)
// System
versionInfo = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "version_info"), "Nagios version information", []string{"version"}, nil)
buildInfo = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "build_info"), "Nagios exporter build information", []string{"version", "build_date", "commit"}, nil)
// System Detail
hostchecks = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "host_checks_minutes"), "Host checks over time", []string{"check_type"}, nil)
servicechecks = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "service_checks_minutes"), "Service checks over time", []string{"check_type"}, nil)
// operator is min/max/avg exposed by Nagios XI API
// performance_type is latency/execution
// technically there is no such thing as a check_type of passive for these metrics
hostchecksPerformance = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "host_checks_performance_seconds"), "Host checks performance", []string{"check_type", "performance_type", "operator"}, nil)
servicechecksPerformance = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "service_checks_performance_seconds"), "Service checks performance", []string{"check_type", "performance_type", "operator"}, nil)
// Users
usersTotal = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "users_total"), "Amount of users present on the system", nil, nil)
usersPrivileges = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "users_privileges_total"), "Amount of admin or regular users", []string{"privileges"}, nil)
usersStatus = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "users_status_total"), "Amount of disabled or enabled users", []string{"status"}, nil)
// Optional metric
updateAvailable = prometheus.NewDesc(prometheus.BuildFQName(namespace, "", "update_available_info"), "NagiosXI update is available", nil, nil)
NagiosXIURL = "https://assets.nagios.com/downloads/nagiosxi/versions.php"
)
type Exporter struct {
nagiosEndpoint, nagiosAPIKey string
sslVerify bool
nagiosAPITimeout time.Duration
nagiostatsPath string
nagiosconfigPath string
checkUpdates bool
}
func NewExporter(nagiosEndpoint, nagiosAPIKey string, sslVerify bool, nagiosAPITimeout time.Duration, nagiostatsPath string, nagiosconfigPath string, checkUpdates bool) *Exporter {
return &Exporter{
nagiosEndpoint: nagiosEndpoint,
nagiosAPIKey: nagiosAPIKey,
sslVerify: sslVerify,
nagiosAPITimeout: nagiosAPITimeout,
nagiostatsPath: nagiostatsPath,
nagiosconfigPath: nagiosconfigPath,
checkUpdates: checkUpdates,
}
}
func (e *Exporter) Describe(ch chan<- *prometheus.Desc) {
// Nagios status
ch <- up
// Hosts
ch <- hostsTotal
ch <- hostsStatus
ch <- hostsDowntime
if e.nagiostatsPath == "" {
// metrics only available from the API, no `nagiostats` support
ch <- hostsProblemsAcknowledged
ch <- hostsCheckedTotal
ch <- hostsCheckLatency
ch <- hostsCheckExecution
}
// Services
ch <- servicesTotal
ch <- servicesStatus
ch <- servicesDowntime
if e.nagiostatsPath == "" {
ch <- servicesProblemsAcknowledged
ch <- servicesCheckedTotal
ch <- servicesCheckLatency
ch <- servicesCheckExecution
}
// System
ch <- versionInfo
ch <- buildInfo
// System Detail
ch <- hostchecks
ch <- servicechecks
ch <- hostchecksPerformance
ch <- servicechecksPerformance
// Users
if e.nagiostatsPath == "" {
// we cannot get user information from Nagios Core 3/4
ch <- usersTotal
ch <- usersPrivileges
ch <- usersStatus
}
// Optional metric
ch <- updateAvailable
}
func (e *Exporter) TestNagiosConnectivity(sslVerify bool, nagiosAPITimeout time.Duration) float64 {
systemStatusURL := e.nagiosEndpoint + systemstatusAPI + "?apikey=" + e.nagiosAPIKey
body := QueryAPIs(systemStatusURL, sslVerify, nagiosAPITimeout)
log.Debug("Queried API: ", systemstatusAPI)
systemStatusObject := systemStatus{}
jsonErr := json.Unmarshal(body, &systemStatusObject)
if jsonErr != nil {
return 0
}
return systemStatusObject.Running
}
func (e *Exporter) TestNagiosstatsBinary(nagiostatsPath string, nagiosconfigPath string) float64 {
cmd := exec.Command(nagiostatsPath, "-c", nagiosconfigPath)
err := cmd.Run()
if err != nil {
log.Fatal(err)
return 0
}
return 1
}
func (e *Exporter) Collect(ch chan<- prometheus.Metric) {
if e.nagiostatsPath == "" {
nagiosStatus := e.TestNagiosConnectivity(e.sslVerify, e.nagiosAPITimeout)
if nagiosStatus == 0 {
log.Warn("Cannot connect to Nagios endpoint")
}
ch <- prometheus.MustNewConstMetric(
up, prometheus.GaugeValue, nagiosStatus,
)
e.QueryAPIsAndUpdateMetrics(ch, e.sslVerify, e.nagiosAPITimeout, e.checkUpdates)
} else {
nagiosStatus := e.TestNagiosstatsBinary(e.nagiostatsPath, e.nagiosconfigPath)
if nagiosStatus == 0 {
log.Warn("Cannot execute nagiostats: ", e.nagiostatsPath)
}
ch <- prometheus.MustNewConstMetric(
up, prometheus.GaugeValue, nagiosStatus,
)
e.QueryNagiostatsAndUpdateMetrics(ch, e.nagiostatsPath, e.nagiosconfigPath)
}
}
// NagiosXI only supports submitting an API token as a URL parameter, so we need to scrub the API key from HTTP client errors
func sanitizeAPIKeyErrors(err error) error {
var re = regexp.MustCompile("(apikey=)(.*)")
sanitizedString := re.ReplaceAllString(err.Error(), "${1}<redactedAPIKey>")
return errors.New(sanitizedString)
}
func QueryAPIs(url string, sslVerify bool, nagiosAPITimeout time.Duration) (body []byte) {
// https://github.com/prometheus/haproxy_exporter/blob/main/haproxy_exporter.go#L337-L345
tr := &http.Transport{TLSClientConfig: &tls.Config{InsecureSkipVerify: !sslVerify}}
client := http.Client{
Timeout: nagiosAPITimeout,
Transport: tr,
}
req, err := http.NewRequest("GET", url, nil)
if err != nil {
log.Warn(sanitizeAPIKeyErrors(err))
}
req.Header.Set("Content-Type", "application/json")
req.Header.Set("User-Agent", "Prometheus")
resp, err := client.Do(req)
if err != nil {
log.Fatal(sanitizeAPIKeyErrors(err))
}
if resp.Body != nil {
defer resp.Body.Close()
} else {
log.Fatal("HTTP response body is nil - check API connectivity")
}
body, readErr := io.ReadAll(resp.Body)
if readErr != nil {
log.Fatal(sanitizeAPIKeyErrors(readErr))
}
return body
}
func histogramProducer(bucket1, bucket2, bucket3, bucket4, bucket5, bucket6, bucket7, bucket8, bucket9, bucket10, step1, step2, step3, step4, step5, step6, step7, step8, step9, step10, comparisonValue float64) (float64, float64, float64, float64, float64, float64, float64, float64, float64, float64) {
// pretty lame as this requires exactly 10 buckets
// remember histogram cumulative so every leave off the smallest bucket each time
switch value := comparisonValue; {
case 0.0 <= value && value <= step1:
bucket1++
bucket2++
bucket3++
bucket4++
bucket5++
bucket6++
bucket7++
bucket8++
bucket9++
bucket10++
// fmt.Println("value is! ", value)
// fmt.Println("all buckets between 0.0 and ", step1)
case step1 < value && value <= step2:
bucket2++
bucket3++
bucket4++
bucket5++
bucket6++
bucket7++
bucket8++
bucket9++
bucket10++
case step2 < value && value <= step3:
bucket3++
bucket4++
bucket5++
bucket6++
bucket7++
bucket8++
bucket9++
bucket10++
case step3 < value && value <= step4:
bucket4++
bucket5++
bucket6++
bucket7++
bucket8++
bucket9++
bucket10++
case step4 < value && value <= step5:
bucket5++
bucket6++
bucket7++
bucket8++
bucket9++
bucket10++
case step5 < value && value <= step6:
bucket6++
bucket7++
bucket8++
bucket9++
bucket10++
case step6 < value && value <= step7:
bucket7++
bucket8++
bucket9++
bucket10++
case step7 < value && value <= step8:
bucket8++
bucket9++
bucket10++
case step8 < value && value <= step9:
bucket9++
bucket10++
case step9 < value && value <= step10:
bucket10++
}
return bucket1, bucket2, bucket3, bucket4, bucket5, bucket6, bucket7, bucket8, bucket9, bucket10
}
func (e *Exporter) QueryAPIsAndUpdateMetrics(ch chan<- prometheus.Metric, sslVerify bool, nagiosAPITimeout time.Duration, checkUpdates bool) {
// get system status
systeminfoURL := e.nagiosEndpoint + systeminfoAPI + "?apikey=" + e.nagiosAPIKey
log.Debug("Queried API: ", systeminfoAPI)
body := QueryAPIs(systeminfoURL, sslVerify, nagiosAPITimeout)
systemInfoObject := systemInfo{}
jsonErr := json.Unmarshal(body, &systemInfoObject)
if jsonErr != nil {
log.Fatal(jsonErr)
}
ch <- prometheus.MustNewConstMetric(
versionInfo, prometheus.GaugeValue, 1, systemInfoObject.Version,
)
// optional cmdline flag to expose this metric
if checkUpdates {
nagiosVersion, err := get_nagios_version.GetLatestNagiosXIVersion(NagiosXIURL)
if err != nil {
// don't abandon exporter just for version updater issues
log.Warn(err)
}
// Ensure that nagiosVersion is not empty before comparing versions/updating the metric
if nagiosVersion != "" {
updateMetric := CompareNagiosVersions(nagiosVersion, systemInfoObject.Version)
ch <- prometheus.MustNewConstMetric(
updateAvailable, prometheus.GaugeValue, updateMetric,
// updateMetric 0 = no update, updateMetric 1 = update available
)
}
log.Warn("Nagios version wasn't found, not updating `nagios_update_available_info` metric")
} else { // user did not want to compare nagios versions externally so just say there aren't any updates (0)
ch <- prometheus.MustNewConstMetric(
updateAvailable, prometheus.GaugeValue, 0,
)
}
// host status
hoststatusURL := e.nagiosEndpoint + hoststatusAPI + "?apikey=" + e.nagiosAPIKey
body = QueryAPIs(hoststatusURL, sslVerify, nagiosAPITimeout)
log.Debug("Queried API: ", systeminfoAPI)
hostStatusObject := hostStatus{}
jsonErr = json.Unmarshal(body, &hostStatusObject)
if jsonErr != nil {
log.Fatal(jsonErr)
}
var hostsCount, hostsActiveCheckCount, hostsPassiveCheckCount, hostsUpCount, hostsDownCount, hostsUnreachableCount, hostsFlapCount, hostsDowntimeCount, hostsProblemsAcknowledgedCount float64
// not sure if these variable names are awful or acceptable
var hostsActiveCheckLatencySum, hostsActiveCheckLatencyHundredthSecond, hostsActiveCheckLatencyTenthSecond,
hostsActiveCheckLatencyHalfSecond, hostsActiveCheckLatency1s, hostsActiveCheckLatency3s, hostsActiveCheckLatency5s, hostsActiveCheckLatency7s, hostsActiveCheckLatency10s, hostsActiveCheckLatency12s, hostsActiveCheckLatency15s float64
var hostsActiveCheckExecutionSum, hostsActiveCheckExecutionHundredthSecond, hostsActiveCheckExecutionFifthHundredthSecond,
hostsActiveCheckExecutionTenthSecond, hostsActiveCheckExecutionThirdSecond, hostsActiveCheckExecutionHalfSecond, hostsActiveCheckExecutionSeventhSecond, hostsActiveCheckExecution1s, hostsActiveCheckExecution1Halfs, hostsActiveCheckExecution2s, hostsActiveCheckExecution2Halfs float64
// iterate through nested json
for _, v := range hostStatusObject.Hoststatus {
// for every host
hostsCount++
if v.CheckType == 0 {
hostsActiveCheckCount++
// beware all ye who enter here and try to understand this
hostsActiveCheckLatencyHundredthSecond, hostsActiveCheckLatencyTenthSecond,
hostsActiveCheckLatencyHalfSecond, hostsActiveCheckLatency1s, hostsActiveCheckLatency3s, hostsActiveCheckLatency5s, hostsActiveCheckLatency7s, hostsActiveCheckLatency10s, hostsActiveCheckLatency12s, hostsActiveCheckLatency15s = histogramProducer(hostsActiveCheckLatencyHundredthSecond, hostsActiveCheckLatencyTenthSecond,
hostsActiveCheckLatencyHalfSecond, hostsActiveCheckLatency1s, hostsActiveCheckLatency3s, hostsActiveCheckLatency5s, hostsActiveCheckLatency7s, hostsActiveCheckLatency10s, hostsActiveCheckLatency12s, hostsActiveCheckLatency15s, 0.01, 0.1, 0.5, 1.0, 3.0, 5.0, 7.0, 10.0, 12.5, 15.0, v.Latency)
hostsActiveCheckExecutionHundredthSecond, hostsActiveCheckExecutionFifthHundredthSecond,
hostsActiveCheckExecutionTenthSecond, hostsActiveCheckExecutionThirdSecond, hostsActiveCheckExecutionHalfSecond, hostsActiveCheckExecutionSeventhSecond, hostsActiveCheckExecution1s, hostsActiveCheckExecution1Halfs, hostsActiveCheckExecution2s, hostsActiveCheckExecution2Halfs = histogramProducer(hostsActiveCheckExecutionHundredthSecond, hostsActiveCheckExecutionFifthHundredthSecond,
hostsActiveCheckExecutionTenthSecond, hostsActiveCheckExecutionThirdSecond, hostsActiveCheckExecutionHalfSecond, hostsActiveCheckExecutionSeventhSecond, hostsActiveCheckExecution1s, hostsActiveCheckExecution1Halfs, hostsActiveCheckExecution2s, hostsActiveCheckExecution2Halfs, 0.01, 0.05, 0.1, 0.3, 0.5, 0.7, 1.0, 1.5, 2.0, 2.5, v.ExecutionTime)
hostsActiveCheckLatencySum += v.Latency
hostsActiveCheckExecutionSum += v.ExecutionTime
} else {
hostsPassiveCheckCount++
// remember there is no service check execution time/latency, hence lack of histogram here
}
switch currentstate := v.CurrentState; currentstate {
case 0:
hostsUpCount++
case 1:
hostsDownCount++
case 2:
hostsUnreachableCount++
}
if v.IsFlapping == 1 {
hostsFlapCount++
}
if v.ScheduledDowntimeDepth == 1 {
hostsDowntimeCount++
}
if v.ProblemHasBeenAcknowledged == 1 {
hostsProblemsAcknowledgedCount++
}
}
ch <- prometheus.MustNewConstMetric(
hostsProblemsAcknowledged, prometheus.GaugeValue, hostsProblemsAcknowledgedCount,
)
ch <- prometheus.MustNewConstHistogram(
hostsCheckLatency, uint64(hostsActiveCheckCount), hostsActiveCheckLatencySum, map[float64]uint64{
0.01: uint64(hostsActiveCheckLatencyHundredthSecond),
0.1: uint64(hostsActiveCheckLatencyTenthSecond),
0.5: uint64(hostsActiveCheckLatencyHalfSecond),
1.0: uint64(hostsActiveCheckLatency1s),
3.0: uint64(hostsActiveCheckLatency3s),
5.0: uint64(hostsActiveCheckLatency5s),
7.0: uint64(hostsActiveCheckLatency7s),
10.0: uint64(hostsActiveCheckLatency10s),
12.5: uint64(hostsActiveCheckLatency12s),
15.0: uint64(hostsActiveCheckLatency15s)},
"active", "latency",
)
ch <- prometheus.MustNewConstHistogram(
hostsCheckExecution, uint64(hostsActiveCheckCount), hostsActiveCheckExecutionSum, map[float64]uint64{
0.01: uint64(hostsActiveCheckExecutionHundredthSecond),
0.05: uint64(hostsActiveCheckExecutionFifthHundredthSecond),
0.1: uint64(hostsActiveCheckExecutionTenthSecond),
0.3: uint64(hostsActiveCheckExecutionThirdSecond),
0.5: uint64(hostsActiveCheckExecutionHalfSecond),
0.7: uint64(hostsActiveCheckExecutionSeventhSecond),
1.0: uint64(hostsActiveCheckExecution1s),
1.5: uint64(hostsActiveCheckExecution1Halfs),
2.0: uint64(hostsActiveCheckExecution2s),
2.5: uint64(hostsActiveCheckExecution2Halfs)},
"active", "execution",
)
// service status
servicestatusURL := e.nagiosEndpoint + servicestatusAPI + "?apikey=" + e.nagiosAPIKey
body = QueryAPIs(servicestatusURL, sslVerify, nagiosAPITimeout)
log.Debug("Queried API: ", servicestatusAPI)
serviceStatusObject := serviceStatus{}
jsonErr = json.Unmarshal(body, &serviceStatusObject)
if jsonErr != nil {
log.Fatal(jsonErr)
}
var servicesCount, servicesScheduledCount, servicesActiveCheckCount,
servicesPassiveCheckCount, servicesOkCount, servicesWarnCount, servicesCriticalCount,
servicesUnknownCount, servicesFlapCount, servicesDowntimeCount, servicesProblemsAcknowledgedCount float64
var servicesActiveCheckLatencySum, servicesActiveCheckLatencyHundredthSecond, servicesActiveCheckLatencyTenthSecond,
servicesActiveCheckLatencyHalfSecond, servicesActiveCheckLatency1s, servicesActiveCheckLatency3s, servicesActiveCheckLatency5s, servicesActiveCheckLatency7s, servicesActiveCheckLatency10s, servicesActiveCheckLatency12s, servicesActiveCheckLatency15s float64
var servicesActiveCheckExecutionSum, servicesActiveCheckExecutionHundredthSecond, servicesActiveCheckExecutionFifthHundredthSecond,
servicesActiveCheckExecutionTenthSecond, servicesActiveCheckExecutionThirdSecond, servicesActiveCheckExecutionHalfSecond, servicesActiveCheckExecutionSeventhSecond, servicesActiveCheckExecution1s, servicesActiveCheckExecution1Halfs, servicesActiveCheckExecution2s, servicesActiveCheckExecution2Halfs float64
for _, v := range serviceStatusObject.Servicestatus {
servicesCount++
if v.ShouldBeScheduled == 0 {
servicesScheduledCount++
}
if v.CheckType == 0 {
servicesActiveCheckCount++
servicesActiveCheckLatencyHundredthSecond, servicesActiveCheckLatencyTenthSecond,
servicesActiveCheckLatencyHalfSecond, servicesActiveCheckLatency1s, servicesActiveCheckLatency3s, servicesActiveCheckLatency5s, servicesActiveCheckLatency7s, servicesActiveCheckLatency10s, servicesActiveCheckLatency12s, servicesActiveCheckLatency15s = histogramProducer(servicesActiveCheckLatencyHundredthSecond, servicesActiveCheckLatencyTenthSecond,
servicesActiveCheckLatencyHalfSecond, servicesActiveCheckLatency1s, servicesActiveCheckLatency3s, servicesActiveCheckLatency5s, servicesActiveCheckLatency7s, servicesActiveCheckLatency10s, servicesActiveCheckLatency12s, servicesActiveCheckLatency15s, 0.01, 0.1, 0.5, 1.0, 3.0, 5.0, 7.0, 10.0, 12.5, 15.0, v.Latency)
servicesActiveCheckExecutionHundredthSecond, servicesActiveCheckExecutionFifthHundredthSecond,
servicesActiveCheckExecutionTenthSecond, servicesActiveCheckExecutionThirdSecond, servicesActiveCheckExecutionHalfSecond, servicesActiveCheckExecutionSeventhSecond, servicesActiveCheckExecution1s, servicesActiveCheckExecution1Halfs, servicesActiveCheckExecution2s, servicesActiveCheckExecution2Halfs = histogramProducer(servicesActiveCheckExecutionHundredthSecond, servicesActiveCheckExecutionFifthHundredthSecond,
servicesActiveCheckExecutionTenthSecond, servicesActiveCheckExecutionThirdSecond, servicesActiveCheckExecutionHalfSecond, servicesActiveCheckExecutionSeventhSecond, servicesActiveCheckExecution1s, servicesActiveCheckExecution1Halfs, servicesActiveCheckExecution2s, servicesActiveCheckExecution2Halfs, 0.01, 0.05, 0.1, 0.3, 0.5, 0.7, 1.0, 1.5, 2.0, 2.5, v.ExecutionTime)
servicesActiveCheckLatencySum += v.Latency
servicesActiveCheckExecutionSum += v.ExecutionTime
} else {
servicesPassiveCheckCount++
}
switch currentstate := v.CurrentState; currentstate {
case 0:
servicesOkCount++
case 1:
servicesWarnCount++
case 2:
servicesCriticalCount++
case 3:
servicesUnknownCount++
}
if v.IsFlapping == 1 {
servicesFlapCount++
}
if v.ScheduledDowntimeDepth == 1 {
servicesDowntimeCount++
}
if v.ProblemHasBeenAcknowledged == 1 {
servicesProblemsAcknowledgedCount++
}
}
ch <- prometheus.MustNewConstMetric(
servicesProblemsAcknowledged, prometheus.GaugeValue, servicesProblemsAcknowledgedCount,
)
ch <- prometheus.MustNewConstHistogram(
servicesCheckLatency, uint64(servicesActiveCheckCount), servicesActiveCheckLatencySum, map[float64]uint64{
0.01: uint64(servicesActiveCheckLatencyHundredthSecond),
0.1: uint64(servicesActiveCheckLatencyTenthSecond),
0.5: uint64(servicesActiveCheckLatencyHalfSecond),
1.0: uint64(servicesActiveCheckLatency1s),
3.0: uint64(servicesActiveCheckLatency3s),
5.0: uint64(servicesActiveCheckLatency5s),
7.0: uint64(servicesActiveCheckLatency7s),
10.0: uint64(servicesActiveCheckLatency10s),
12.5: uint64(servicesActiveCheckLatency12s),
15.0: uint64(servicesActiveCheckLatency15s)},
"active", "latency",
)
ch <- prometheus.MustNewConstHistogram(
servicesCheckExecution, uint64(servicesActiveCheckCount), servicesActiveCheckExecutionSum, map[float64]uint64{
0.01: uint64(servicesActiveCheckExecutionHundredthSecond),
0.05: uint64(servicesActiveCheckExecutionFifthHundredthSecond),
0.1: uint64(servicesActiveCheckExecutionTenthSecond),
0.3: uint64(servicesActiveCheckExecutionThirdSecond),
0.5: uint64(servicesActiveCheckExecutionHalfSecond),
0.7: uint64(servicesActiveCheckExecutionSeventhSecond),
1.0: uint64(servicesActiveCheckExecution1s),
1.5: uint64(servicesActiveCheckExecution1Halfs),
2.0: uint64(servicesActiveCheckExecution2s),
2.5: uint64(servicesActiveCheckExecution2Halfs)},
"active", "execution",
)
// system status
systemStatusDetailURL := e.nagiosEndpoint + systemstatusDetailAPI + "?apikey=" + e.nagiosAPIKey
body = QueryAPIs(systemStatusDetailURL, sslVerify, nagiosAPITimeout)
log.Debug("Queried API: ", systemstatusDetailAPI)
systemStatusDetailObject := systemStatusDetail{}
jsonErr = json.Unmarshal(body, &systemStatusDetailObject)
if jsonErr != nil {
log.Fatal(jsonErr)
}
// user information
// we also need to tack on the optional parameter of `advanced` to get privilege information
systemUserURL := e.nagiosEndpoint + systemuserAPI + "?apikey=" + e.nagiosAPIKey + "&advanced=1"
body = QueryAPIs(systemUserURL, sslVerify, nagiosAPITimeout)
log.Debug("Queried API: ", systemuserAPI)
userStatusObject := userStatus{}
jsonErr = json.Unmarshal(body, &userStatusObject)
if jsonErr != nil {
log.Fatal(jsonErr)
}
var usersAdminCount, usersRegularCount, usersEnabledCount, usersDisabledCount float64
ch <- prometheus.MustNewConstMetric(
usersTotal, prometheus.GaugeValue, userStatusObject.Recordcount,
)
for _, v := range userStatusObject.Userstatus {
if v.Admin == 1 {
usersAdminCount++
} else {
usersRegularCount++
}
if v.Enabled == 1 {
usersEnabledCount++
} else {
usersDisabledCount++
}
}
ch <- prometheus.MustNewConstMetric(
usersStatus, prometheus.GaugeValue, usersEnabledCount, "enabled",
)
ch <- prometheus.MustNewConstMetric(
usersStatus, prometheus.GaugeValue, usersDisabledCount, "disabled",
)
ch <- prometheus.MustNewConstMetric(
usersPrivileges, prometheus.GaugeValue, usersAdminCount, "admin",
)
ch <- prometheus.MustNewConstMetric(
usersPrivileges, prometheus.GaugeValue, usersRegularCount, "user",
)
e.UpdateCommonMetrics(ch, hostsCount, hostsActiveCheckCount, hostsPassiveCheckCount, hostsUpCount, hostsDownCount, hostsUnreachableCount,
hostsFlapCount, hostsDowntimeCount,
servicesCount, servicesActiveCheckCount, servicesPassiveCheckCount, servicesOkCount, servicesWarnCount, servicesCriticalCount, servicesUnknownCount,
servicesFlapCount, servicesDowntimeCount,
systemStatusDetailObject.Nagioscore.Activehostchecks.Val1, systemStatusDetailObject.Nagioscore.Activehostchecks.Val5, systemStatusDetailObject.Nagioscore.Activehostchecks.Val15,
systemStatusDetailObject.Nagioscore.Passivehostchecks.Val1, systemStatusDetailObject.Nagioscore.Passivehostchecks.Val5, systemStatusDetailObject.Nagioscore.Passivehostchecks.Val15,
systemStatusDetailObject.Nagioscore.Activeservicechecks.Val1, systemStatusDetailObject.Nagioscore.Activeservicechecks.Val5, systemStatusDetailObject.Nagioscore.Activeservicechecks.Val15,
systemStatusDetailObject.Nagioscore.Passiveservicechecks.Val1, systemStatusDetailObject.Nagioscore.Passiveservicechecks.Val5, systemStatusDetailObject.Nagioscore.Passiveservicechecks.Val15, systemStatusDetailObject.Nagioscore.Activehostcheckperf.AvgLatency, systemStatusDetailObject.Nagioscore.Activehostcheckperf.MinLatency, systemStatusDetailObject.Nagioscore.Activehostcheckperf.MaxLatency, systemStatusDetailObject.Nagioscore.Activehostcheckperf.AvgExecutionTime, systemStatusDetailObject.Nagioscore.Activehostcheckperf.MinExecutionTime, systemStatusDetailObject.Nagioscore.Activehostcheckperf.MaxExecutionTime, systemStatusDetailObject.Nagioscore.Activeservicecheckperf.AvgLatency, systemStatusDetailObject.Nagioscore.Activeservicecheckperf.MinLatency, systemStatusDetailObject.Nagioscore.Activeservicecheckperf.MaxLatency, systemStatusDetailObject.Nagioscore.Activeservicecheckperf.AvgExecutionTime, systemStatusDetailObject.Nagioscore.Activeservicecheckperf.MinExecutionTime, systemStatusDetailObject.Nagioscore.Activeservicecheckperf.MaxExecutionTime)
log.Info("Endpoint scraped and metrics updated")
}
func (e *Exporter) UpdateCommonMetrics(ch chan<- prometheus.Metric, hostsCount, hostsActiveCheckCount, hostsPassiveCheckCount, hostsUpCount, hostsDownCount, hostsUnreachableCount,
hostsFlapCount, hostsDowntimeCount, servicesCount, servicesActiveCheckCount, servicesPassiveCheckCount, servicesOkCount, servicesWarnCount, servicesCriticalCount, servicesUnknownCount,
servicesFlapCount, servicesDowntimeCount,
activehostchecks1m, activehostchecks5m, activehostchecks15m, passivehostchecks1m, passivehostchecks5m, passivehostchecks15m,
activeservicechecks1m, activeservicechecks5m, activeservicechecks15m, passiveservicechecks1m, passiveservicechecks5m, passiveservicechecks15m, activehostchecklatencyavg, activehostchecklatencymin, activehostchecklatencymax, activehostcheckexecutionavg, activehostcheckexecutionmin, activehostcheckexecutionmax, activeservicechecklatencyavg, activeservicechecklatencymin, activeservicechecklatencymax, activeservicecheckexecutionavg, activeservicecheckexecutionmin, activeservicecheckexecutionmax float64) {
// Metrics common to both collection options
ch <- prometheus.MustNewConstMetric(
buildInfo, prometheus.GaugeValue, 1, Version, BuildDate, Commit,
)
// host status
ch <- prometheus.MustNewConstMetric(
hostsTotal, prometheus.GaugeValue, hostsCount,
)
ch <- prometheus.MustNewConstMetric(
hostsCheckedTotal, prometheus.GaugeValue, hostsActiveCheckCount, "active",
)
ch <- prometheus.MustNewConstMetric(
hostsCheckedTotal, prometheus.GaugeValue, hostsPassiveCheckCount, "passive",
)
ch <- prometheus.MustNewConstMetric(
hostsStatus, prometheus.GaugeValue, hostsUpCount, "up",
)
ch <- prometheus.MustNewConstMetric(
hostsStatus, prometheus.GaugeValue, hostsDownCount, "down",
)
ch <- prometheus.MustNewConstMetric(
hostsStatus, prometheus.GaugeValue, hostsUnreachableCount, "unreachable",
)
ch <- prometheus.MustNewConstMetric(
hostsStatus, prometheus.GaugeValue, hostsFlapCount, "flapping",
)
ch <- prometheus.MustNewConstMetric(
hostsDowntime, prometheus.GaugeValue, hostsDowntimeCount,
)
// service status
ch <- prometheus.MustNewConstMetric(
servicesTotal, prometheus.GaugeValue, servicesCount,
)
ch <- prometheus.MustNewConstMetric(
servicesCheckedTotal, prometheus.GaugeValue, servicesActiveCheckCount, "active",
)
ch <- prometheus.MustNewConstMetric(
servicesCheckedTotal, prometheus.GaugeValue, servicesPassiveCheckCount, "passive",
)
ch <- prometheus.MustNewConstMetric(
servicesStatus, prometheus.GaugeValue, servicesOkCount, "ok",
)
ch <- prometheus.MustNewConstMetric(
servicesStatus, prometheus.GaugeValue, servicesWarnCount, "warn",
)
ch <- prometheus.MustNewConstMetric(
servicesStatus, prometheus.GaugeValue, servicesCriticalCount, "critical",
)
ch <- prometheus.MustNewConstMetric(
servicesStatus, prometheus.GaugeValue, servicesUnknownCount, "unknown",
)
ch <- prometheus.MustNewConstMetric(
servicesStatus, prometheus.GaugeValue, servicesFlapCount, "flapping",
)
ch <- prometheus.MustNewConstMetric(
servicesDowntime, prometheus.GaugeValue, servicesDowntimeCount,
)
activeHostCheckSum := activehostchecks1m + activehostchecks5m + activehostchecks15m
ch <- prometheus.MustNewConstHistogram(
hostchecks, uint64(activeHostCheckSum), activeHostCheckSum, map[float64]uint64{
1: uint64(activehostchecks1m),
5: uint64(activehostchecks5m),
15: uint64(activehostchecks15m)}, "active",
)
passiveHostCheckSum := passivehostchecks1m + passivehostchecks5m + passivehostchecks15m
ch <- prometheus.MustNewConstHistogram(
hostchecks, uint64(passiveHostCheckSum), passiveHostCheckSum, map[float64]uint64{
1: uint64(passivehostchecks1m),
5: uint64(passivehostchecks5m),
15: uint64(passivehostchecks15m)}, "passive",
)
activeserviceCheckSum := activeservicechecks1m + activeservicechecks5m + activeservicechecks15m
ch <- prometheus.MustNewConstHistogram(
servicechecks, uint64(activeserviceCheckSum), activeserviceCheckSum, map[float64]uint64{
1: uint64(activeservicechecks1m),
5: uint64(activeservicechecks5m),
15: uint64(activeservicechecks15m)}, "active",
)
passiveserviceCheckSum := passiveservicechecks1m + passiveservicechecks5m + passiveservicechecks15m
ch <- prometheus.MustNewConstHistogram(
servicechecks, uint64(passiveserviceCheckSum), passiveserviceCheckSum, map[float64]uint64{
1: uint64(passiveservicechecks1m),
5: uint64(passiveservicechecks5m),
15: uint64(passiveservicechecks15m)}, "passive",
)
// active host check performance
ch <- prometheus.MustNewConstMetric(
hostchecksPerformance, prometheus.GaugeValue, activehostchecklatencyavg, "active", "latency", "avg",
)
ch <- prometheus.MustNewConstMetric(
hostchecksPerformance, prometheus.GaugeValue, activehostchecklatencymin, "active", "latency", "min",
)
ch <- prometheus.MustNewConstMetric(
hostchecksPerformance, prometheus.GaugeValue, activehostchecklatencymax, "active", "latency", "max",
)
ch <- prometheus.MustNewConstMetric(
hostchecksPerformance, prometheus.GaugeValue, activehostcheckexecutionavg, "active", "execution", "avg",
)
ch <- prometheus.MustNewConstMetric(
hostchecksPerformance, prometheus.GaugeValue, activehostcheckexecutionmin, "active", "execution", "min",
)
ch <- prometheus.MustNewConstMetric(
hostchecksPerformance, prometheus.GaugeValue, activehostcheckexecutionmax, "active", "execution", "max",
)
// active service check performance
ch <- prometheus.MustNewConstMetric(
servicechecksPerformance, prometheus.GaugeValue, activeservicechecklatencyavg, "active", "latency", "avg",
)
ch <- prometheus.MustNewConstMetric(
servicechecksPerformance, prometheus.GaugeValue, activeservicechecklatencymin, "active", "latency", "min",
)
ch <- prometheus.MustNewConstMetric(
servicechecksPerformance, prometheus.GaugeValue, activeservicechecklatencymax, "active", "latency", "max",
)
ch <- prometheus.MustNewConstMetric(
servicechecksPerformance, prometheus.GaugeValue, activeservicecheckexecutionavg, "active", "execution", "avg",
)
ch <- prometheus.MustNewConstMetric(
servicechecksPerformance, prometheus.GaugeValue, activeservicecheckexecutionmin, "active", "execution", "min",
)
ch <- prometheus.MustNewConstMetric(
servicechecksPerformance, prometheus.GaugeValue, activeservicecheckexecutionmax, "active", "execution", "max",
)
}
func (e *Exporter) QueryNagiostatsAndUpdateMetrics(ch chan<- prometheus.Metric, nagiostatsPath string, nagiosconfigPath string) {
// to get specific values, we output them in MRTG format
// we pass a comma seperated string of MRTG data - must be manually kept up to date
mrtgList := "NAGIOSVERSION,NUMHOSTS,NUMHSTACTCHK60M,NUMHSTPSVCHK60M,NUMHSTUP,NUMHSTDOWN,NUMHSTUNR,NUMHSTFLAPPING,NUMHSTDOWNTIME,NUMSERVICES,NUMSVCACTCHK60M,NUMSVCPSVCHK60M,NUMSVCOK,NUMSVCWARN,NUMSVCUNKN,NUMSVCCRIT,NUMSVCFLAPPING,NUMSVCDOWNTIME,NUMHSTACTCHK1M,NUMHSTACTCHK5M,NUMHSTACTCHK15M,NUMHSTPSVCHK1M,NUMHSTPSVCHK5M,NUMHSTPSVCHK15M,NUMSVCACTCHK1M,NUMSVCACTCHK5M,NUMSVCACTCHK15M,NUMSVCPSVCHK1M,NUMSVCPSVCHK5M,NUMSVCPSVCHK15M,AVGACTHSTLAT,MINACTHSTLAT,MAXACTHSTLAT,AVGACTHSTEXT,MINACTHSTEXT,MAXACTHSTEXT,AVGACTSVCLAT,MINACTSVCLAT,MAXACTSVCLAT,AVGACTSVCEXT,MINACTSVCEXT,MAXACTSVCEXT"
// -m = mrtg; -D = use comma as delimiter, -d = MRTG list input
cmd := exec.Command(nagiostatsPath, "-c", nagiosconfigPath, "-m", "-D", ",", "-d", mrtgList)
var out bytes.Buffer
cmd.Stdout = &out
err := cmd.Run()
if err != nil {
log.Fatal(err)
}
log.Debug("Queried nagiostats: ", out.String())
// input our comma seperated list as metrics
cmdSplice := strings.Split(out.String(), ",")
// Need float64 values for metrics
metricSlice := make([]float64, 0, len(cmdSplice))
for _, metric := range cmdSplice {
metric, _ := strconv.ParseFloat(metric, 64)
metricSlice = append(metricSlice, metric)
}
var nagiosVersion string = cmdSplice[0] // NAGIOSVERSION
ch <- prometheus.MustNewConstMetric(
// we do want this value to be a string though as it's a label
versionInfo, prometheus.GaugeValue, 1, nagiosVersion,
)
// host status
var hostsCount, hostsActiveCheckCount, hostsPassiveCheckCount, hostsUpCount, hostsDownCount, hostsUnreachableCount, hostsFlapCount, hostsDowntimeCount float64
// maintaining variables for each of these makes it slightly easier to parse
// its really horrible but not sure there's a better way
hostsCount = metricSlice[1] // NUMHOSTS
hostsActiveCheckCount = metricSlice[2] // NUMHSTACTCHK60M - technically only hosts actively checked in last hour
hostsPassiveCheckCount = metricSlice[3] // NUMHSTPSVCHK60M
hostsUpCount = metricSlice[4] // NUMHSTUP
hostsDownCount = metricSlice[5] // NUMHSTDOWN
hostsUnreachableCount = metricSlice[6] // NUMHSTUNR
hostsFlapCount = metricSlice[7] // NUMHSTFLAPPING
hostsDowntimeCount = metricSlice[8] // NUMHSTDOWNTIME
// service status
var servicesCount, servicesActiveCheckCount,
servicesPassiveCheckCount, servicesOkCount, servicesWarnCount, servicesUnknownCount, servicesCriticalCount, servicesFlapCount, servicesDowntimeCount float64
servicesCount = metricSlice[9] // NUMSERVICES
servicesActiveCheckCount = metricSlice[10] // NUMSVCACTCHK60M
servicesPassiveCheckCount = metricSlice[11] // NUMSVCPSVCHK60M
servicesOkCount = metricSlice[12] // NUMSVCOK