Scrap json metrics from nginx vts
upgrade vts to the latest version
This commit is contained in:
Giancarlo Rubio
Manuel de Brito Fontes
parent
dd7f8b4a97
commit
1d38e3a384
7 changed files with 424 additions and 75 deletions
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@ -24,51 +24,22 @@ import (
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common "github.com/ncabatoff/process-exporter"
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"github.com/ncabatoff/process-exporter/proc"
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"github.com/prometheus/client_golang/prometheus"
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"reflect"
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)
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type exeMatcher struct {
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name string
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args []string
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}
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func (em exeMatcher) MatchAndName(nacl common.NameAndCmdline) (bool, string) {
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if len(nacl.Cmdline) == 0 {
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return false, ""
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}
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cmd := filepath.Base(nacl.Cmdline[0])
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return em.name == cmd, ""
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}
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func (n *NGINXController) setupMonitor(args []string) {
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pc, err := newProcessCollector(true, exeMatcher{"nginx", args})
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if err != nil {
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glog.Fatalf("unexpected error registering nginx collector: %v", err)
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}
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err = prometheus.Register(pc)
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if err != nil {
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glog.Warningf("unexpected error registering nginx collector: %v", err)
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}
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}
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// TODO add current namespace
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// TODO add ingress class
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var (
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numprocsDesc = prometheus.NewDesc(
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"nginx_num_procs",
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"number of processes",
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nil, nil)
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// descriptions borrow from https://github.com/vozlt/nginx-module-vts
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cpuSecsDesc = prometheus.NewDesc(
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"nginx_cpu_seconds_total",
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"Cpu usage in seconds",
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nil, nil)
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readBytesDesc = prometheus.NewDesc(
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"nginx_read_bytes_total",
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"number of bytes read",
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nil, nil)
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writeBytesDesc = prometheus.NewDesc(
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"nginx_write_bytes_total",
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"number of bytes written",
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numprocsDesc = prometheus.NewDesc(
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"nginx_num_procs",
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"number of processes",
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nil, nil)
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memResidentbytesDesc = prometheus.NewDesc(
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@ -81,11 +52,107 @@ var (
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"number of bytes of memory in use",
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nil, nil)
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readBytesDesc = prometheus.NewDesc(
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"nginx_read_bytes_total",
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"number of bytes read",
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nil, nil)
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startTimeDesc = prometheus.NewDesc(
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"nginx_oldest_start_time_seconds",
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"start time in seconds since 1970/01/01",
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nil, nil)
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writeBytesDesc = prometheus.NewDesc(
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"nginx_write_bytes_total",
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"number of bytes written",
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nil, nil)
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//vts metrics
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vtsBytesDesc = prometheus.NewDesc(
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"nginx_vts_bytes_total",
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"Nginx bytes count",
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[]string{"server_zone", "direction"}, nil)
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vtsCacheDesc = prometheus.NewDesc(
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"nginx_vts_cache_total",
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"Nginx cache count",
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[]string{"server_zone", "type"}, nil)
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vtsConnectionsDesc = prometheus.NewDesc(
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"nginx_vts_connections_total",
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"Nginx connections count",
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[]string{"type"}, nil)
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vtsResponseDesc = prometheus.NewDesc(
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"nginx_vts_responses_total",
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"The number of responses with status codes 1xx, 2xx, 3xx, 4xx, and 5xx.",
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[]string{"server_zone", "status_code"}, nil)
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vtsRequestDesc = prometheus.NewDesc(
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"nginx_vts_requests_total",
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"The total number of requested client connections.",
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[]string{"server_zone"}, nil)
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vtsFilterZoneBytesDesc = prometheus.NewDesc(
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"nginx_vts_filterzone_bytes_total",
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"Nginx bytes count",
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[]string{"server_zone", "country", "direction"}, nil)
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vtsFilterZoneResponseDesc = prometheus.NewDesc(
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"nginx_vts_filterzone_responses_total",
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"The number of responses with status codes 1xx, 2xx, 3xx, 4xx, and 5xx.",
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[]string{"server_zone", "country", "status_code"}, nil)
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vtsFilterZoneCacheDesc = prometheus.NewDesc(
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"nginx_vts_filterzone_cache_total",
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"Nginx cache count",
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[]string{"server_zone", "country", "type"}, nil)
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vtsUpstreamBackupDesc = prometheus.NewDesc(
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"nginx_vts_upstream_backup",
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"Current backup setting of the server.",
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[]string{"upstream", "server"}, nil)
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vtsUpstreamBytesDesc = prometheus.NewDesc(
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"nginx_vts_upstream_bytes_total",
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"The total number of bytes sent to this server.",
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[]string{"upstream", "server", "direction"}, nil)
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vtsUpstreamDownDesc = prometheus.NewDesc(
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"nginx_vts_upstream_down_total",
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"Current down setting of the server.",
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[]string{"upstream", "server"}, nil)
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vtsUpstreamFailTimeoutDesc = prometheus.NewDesc(
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"nginx_vts_upstream_fail_timeout",
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"Current fail_timeout setting of the server.",
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[]string{"upstream", "server"}, nil)
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vtsUpstreamMaxFailsDesc = prometheus.NewDesc(
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"nginx_vts_upstream_maxfails",
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"Current max_fails setting of the server.",
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[]string{"upstream", "server"}, nil)
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vtsUpstreamResponsesDesc = prometheus.NewDesc(
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"nginx_vts_upstream_responses_total",
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"The number of upstream responses with status codes 1xx, 2xx, 3xx, 4xx, and 5xx.",
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[]string{"upstream", "server", "status_code"}, nil)
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vtsUpstreamRequestDesc = prometheus.NewDesc(
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"nginx_vts_upstream_requests_total",
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"The total number of client connections forwarded to this server.",
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[]string{"upstream", "server"}, nil)
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vtsUpstreamResponseMsecDesc = prometheus.NewDesc(
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"nginx_vts_upstream_response_msecs_avg",
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"The average of only upstream response processing times in milliseconds.",
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[]string{"upstream", "server"}, nil)
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vtsUpstreamWeightDesc = prometheus.NewDesc(
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"nginx_vts_upstream_weight",
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"Current upstream weight setting of the server.",
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[]string{"upstream", "server"}, nil)
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activeDesc = prometheus.NewDesc(
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"nginx_active_connections",
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"total number of active connections",
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@ -122,6 +189,37 @@ var (
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nil, nil)
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)
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type exeMatcher struct {
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name string
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args []string
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}
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func (em exeMatcher) MatchAndName(nacl common.NameAndCmdline) (bool, string) {
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if len(nacl.Cmdline) == 0 {
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return false, ""
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}
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cmd := filepath.Base(nacl.Cmdline[0])
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return em.name == cmd, ""
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}
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func (n *NGINXController) setupMonitor(args []string, vtsCollector bool) {
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pc, err := newProcessCollector(true, exeMatcher{"nginx", args}, vtsCollector)
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if err != nil {
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glog.Fatalf("unexpected error registering nginx collector: %v", err)
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}
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err = prometheus.Register(pc)
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if err != nil {
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if _, ok := err.(prometheus.AlreadyRegisteredError); !ok {
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glog.Warningf("unexpected error registering nginx collector: %v", err)
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}
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}
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}
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type (
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scrapeRequest struct {
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results chan<- prometheus.Metric
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@ -131,22 +229,25 @@ type (
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namedProcessCollector struct {
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scrapeChan chan scrapeRequest
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*proc.Grouper
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fs *proc.FS
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fs *proc.FS
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enableVtsCollector bool
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}
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)
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func newProcessCollector(
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children bool,
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n common.MatchNamer) (*namedProcessCollector, error) {
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n common.MatchNamer,
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enableVtsCollector bool) (*namedProcessCollector, error) {
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fs, err := proc.NewFS("/proc")
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if err != nil {
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return nil, err
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}
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p := &namedProcessCollector{
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scrapeChan: make(chan scrapeRequest),
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Grouper: proc.NewGrouper(children, n),
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fs: fs,
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scrapeChan: make(chan scrapeRequest),
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Grouper: proc.NewGrouper(children, n),
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fs: fs,
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enableVtsCollector: enableVtsCollector,
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}
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_, err = p.Update(p.fs.AllProcs())
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if err != nil {
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@ -160,6 +261,7 @@ func newProcessCollector(
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// Describe implements prometheus.Collector.
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func (p *namedProcessCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- cpuSecsDesc
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ch <- numprocsDesc
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ch <- readBytesDesc
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@ -167,6 +269,26 @@ func (p *namedProcessCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- memResidentbytesDesc
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ch <- memVirtualbytesDesc
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ch <- startTimeDesc
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//vts metrics
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ch <- vtsBytesDesc
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ch <- vtsCacheDesc
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ch <- vtsConnectionsDesc
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ch <- vtsRequestDesc
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ch <- vtsResponseDesc
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ch <- vtsUpstreamBackupDesc
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ch <- vtsUpstreamBytesDesc
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ch <- vtsUpstreamDownDesc
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ch <- vtsUpstreamFailTimeoutDesc
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ch <- vtsUpstreamMaxFailsDesc
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ch <- vtsUpstreamRequestDesc
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ch <- vtsUpstreamResponseMsecDesc
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ch <- vtsUpstreamResponsesDesc
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ch <- vtsUpstreamWeightDesc
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ch <- vtsFilterZoneBytesDesc
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ch <- vtsFilterZoneCacheDesc
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ch <- vtsFilterZoneResponseDesc
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}
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// Collect implements prometheus.Collector.
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@ -177,15 +299,21 @@ func (p *namedProcessCollector) Collect(ch chan<- prometheus.Metric) {
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}
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func (p *namedProcessCollector) start() {
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for req := range p.scrapeChan {
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ch := req.results
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p.scrape(ch)
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p.scrapeNginxStatus(ch)
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p.scrapeProcs(ch)
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p.scrapeVts(ch)
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req.done <- struct{}{}
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}
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}
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func (p *namedProcessCollector) scrape(ch chan<- prometheus.Metric) {
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// scrapeNginxStatus scrap the nginx status
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func (p *namedProcessCollector) scrapeNginxStatus(ch chan<- prometheus.Metric) {
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s, err := getNginxStatus()
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if err != nil {
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glog.Warningf("unexpected error obtaining nginx status info: %v", err)
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return
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@ -206,7 +334,93 @@ func (p *namedProcessCollector) scrape(ch chan<- prometheus.Metric) {
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ch <- prometheus.MustNewConstMetric(waitingDesc,
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prometheus.GaugeValue, float64(s.Waiting))
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_, err = p.Update(p.fs.AllProcs())
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}
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// scrapeVts scrape nginx vts metrics
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func (p *namedProcessCollector) scrapeVts(ch chan<- prometheus.Metric) {
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nginxMetrics, err := getNginxVtsMetrics()
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if err != nil {
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glog.Warningf("unexpected error obtaining nginx status info: %v", err)
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return
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}
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reflectMetrics(&nginxMetrics.Connections, vtsConnectionsDesc, ch)
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for name, zones := range nginxMetrics.UpstreamZones {
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for pos, value := range zones {
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reflectMetrics(&zones[pos].Responses, vtsUpstreamResponsesDesc, ch, name, value.Server)
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ch <- prometheus.MustNewConstMetric(vtsUpstreamRequestDesc,
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prometheus.CounterValue, float64(zones[pos].RequestCounter), name, value.Server)
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ch <- prometheus.MustNewConstMetric(vtsUpstreamDownDesc,
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prometheus.CounterValue, float64(zones[pos].Down), name, value.Server)
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ch <- prometheus.MustNewConstMetric(vtsUpstreamWeightDesc,
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prometheus.CounterValue, float64(zones[pos].Weight), name, value.Server)
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ch <- prometheus.MustNewConstMetric(vtsUpstreamResponseMsecDesc,
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prometheus.CounterValue, float64(zones[pos].ResponseMsec), name, value.Server)
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ch <- prometheus.MustNewConstMetric(vtsUpstreamBackupDesc,
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prometheus.CounterValue, float64(zones[pos].Backup), name, value.Server)
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ch <- prometheus.MustNewConstMetric(vtsUpstreamFailTimeoutDesc,
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prometheus.CounterValue, float64(zones[pos].FailTimeout), name, value.Server)
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ch <- prometheus.MustNewConstMetric(vtsUpstreamMaxFailsDesc,
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prometheus.CounterValue, float64(zones[pos].MaxFails), name, value.Server)
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ch <- prometheus.MustNewConstMetric(vtsUpstreamBytesDesc,
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prometheus.CounterValue, float64(zones[pos].InBytes), name, value.Server, "in")
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ch <- prometheus.MustNewConstMetric(vtsUpstreamBytesDesc,
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prometheus.CounterValue, float64(zones[pos].OutBytes), name, value.Server, "out")
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}
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}
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for name, zone := range nginxMetrics.ServerZones {
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reflectMetrics(&zone.Responses, vtsResponseDesc, ch, name)
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reflectMetrics(&zone.Cache, vtsCacheDesc, ch, name)
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ch <- prometheus.MustNewConstMetric(vtsRequestDesc,
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prometheus.CounterValue, float64(zone.RequestCounter), name)
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ch <- prometheus.MustNewConstMetric(vtsBytesDesc,
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prometheus.CounterValue, float64(zone.InBytes), name, "in")
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ch <- prometheus.MustNewConstMetric(vtsBytesDesc,
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prometheus.CounterValue, float64(zone.OutBytes), name, "out")
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}
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for serverZone, countries := range nginxMetrics.FilterZones {
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for country, zone := range countries {
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reflectMetrics(&zone.Responses, vtsFilterZoneResponseDesc, ch, serverZone, country)
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reflectMetrics(&zone.Cache, vtsFilterZoneCacheDesc, ch, serverZone, country)
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ch <- prometheus.MustNewConstMetric(vtsFilterZoneBytesDesc,
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prometheus.CounterValue, float64(zone.InBytes), serverZone, country, "in")
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ch <- prometheus.MustNewConstMetric(vtsFilterZoneBytesDesc,
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prometheus.CounterValue, float64(zone.OutBytes), serverZone, country, "out")
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}
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}
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}
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func (p *namedProcessCollector) scrapeProcs(ch chan<- prometheus.Metric) {
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_, err := p.Update(p.fs.AllProcs())
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if err != nil {
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glog.Warningf("unexpected error obtaining nginx process info: %v", err)
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return
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@ -231,3 +445,18 @@ func (p *namedProcessCollector) scrape(ch chan<- prometheus.Metric) {
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prometheus.CounterValue, float64(gcounts.WriteBytes))
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}
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}
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func reflectMetrics(value interface{}, desc *prometheus.Desc, ch chan<- prometheus.Metric, labels ...string) {
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val := reflect.ValueOf(value).Elem()
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for i := 0; i < val.NumField(); i++ {
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tag := val.Type().Field(i).Tag
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labels := append(labels, tag.Get("json"))
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ch <- prometheus.MustNewConstMetric(desc,
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prometheus.CounterValue, float64(val.Field(i).Interface().(float64)),
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labels...)
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}
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}
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