feat(inputs.prometheus): Add support for custom header (#12050)
This commit is contained in:
Charly Nanfack
GitHub
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6f407c5949
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d4eda21742
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@ -19,25 +19,25 @@ See the [CONFIGURATION.md][CONFIGURATION.md] for more details.
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[[inputs.prometheus]]
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## An array of urls to scrape metrics from.
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urls = ["http://localhost:9100/metrics"]
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## Metric version controls the mapping from Prometheus metrics into Telegraf metrics.
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## See "Metric Format Configuration" in plugins/inputs/prometheus/README.md for details.
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## Valid options: 1, 2
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# metric_version = 1
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## Url tag name (tag containing scrapped url. optional, default is "url")
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# url_tag = "url"
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## Whether the timestamp of the scraped metrics will be ignored.
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## If set to true, the gather time will be used.
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# ignore_timestamp = false
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## An array of Kubernetes services to scrape metrics from.
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# kubernetes_services = ["http://my-service-dns.my-namespace:9100/metrics"]
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## Kubernetes config file to create client from.
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# kube_config = "/path/to/kubernetes.config"
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## Scrape Kubernetes pods for the following prometheus annotations:
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## - prometheus.io/scrape: Enable scraping for this pod
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## - prometheus.io/scheme: If the metrics endpoint is secured then you will need to
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@ -45,20 +45,20 @@ See the [CONFIGURATION.md][CONFIGURATION.md] for more details.
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## - prometheus.io/path: If the metrics path is not /metrics, define it with this annotation.
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## - prometheus.io/port: If port is not 9102 use this annotation
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# monitor_kubernetes_pods = true
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## Get the list of pods to scrape with either the scope of
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## - cluster: the kubernetes watch api (default, no need to specify)
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## - node: the local cadvisor api; for scalability. Note that the config node_ip or the environment variable NODE_IP must be set to the host IP.
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# pod_scrape_scope = "cluster"
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## Only for node scrape scope: node IP of the node that telegraf is running on.
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## Either this config or the environment variable NODE_IP must be set.
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# node_ip = "10.180.1.1"
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## Only for node scrape scope: interval in seconds for how often to get updated pod list for scraping.
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## Default is 60 seconds.
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# pod_scrape_interval = 60
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## Restricts Kubernetes monitoring to a single namespace
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## ex: monitor_kubernetes_pods_namespace = "default"
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# monitor_kubernetes_pods_namespace = ""
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@ -71,7 +71,7 @@ See the [CONFIGURATION.md][CONFIGURATION.md] for more details.
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# eg. To scrape pods on a specific node
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# kubernetes_field_selector = "spec.nodeName=$HOSTNAME"
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# cache refresh interval to set the interval for re-sync of pods list.
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# cache refresh interval to set the interval for re-sync of pods list.
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# Default is 60 minutes.
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# cache_refresh_interval = 60
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@ -87,29 +87,32 @@ See the [CONFIGURATION.md][CONFIGURATION.md] for more details.
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# url = 'http://{{if ne .ServiceAddress ""}}{{.ServiceAddress}}{{else}}{{.Address}}{{end}}:{{.ServicePort}}/{{with .ServiceMeta.metrics_path}}{{.}}{{else}}metrics{{end}}'
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# [inputs.prometheus.consul.query.tags]
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# host = "{{.Node}}"
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## Use bearer token for authorization. ('bearer_token' takes priority)
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# bearer_token = "/path/to/bearer/token"
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## OR
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# bearer_token_string = "abc_123"
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## HTTP Basic Authentication username and password. ('bearer_token' and
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## 'bearer_token_string' take priority)
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# username = ""
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# password = ""
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## Optional custom HTTP headers
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# headers = {"X-Special-Header" = "Special-Value"}
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## Specify timeout duration for slower prometheus clients (default is 3s)
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# response_timeout = "3s"
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## HTTP Proxy support
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# use_system_proxy = false
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# http_proxy_url = ""
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## Optional TLS Config
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# tls_ca = /path/to/cafile
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# tls_cert = /path/to/certfile
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# tls_key = /path/to/keyfile
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## Use TLS but skip chain & host verification
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# insecure_skip_verify = false
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```
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@ -58,6 +58,8 @@ type Prometheus struct {
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Username string `toml:"username"`
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Password string `toml:"password"`
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HTTPHeaders map[string]string `toml:"http_headers"`
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ResponseTimeout config.Duration `toml:"response_timeout"`
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MetricVersion int `toml:"metric_version"`
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@ -298,6 +300,12 @@ func (p *Prometheus) gatherURL(u URLAndAddress, acc telegraf.Accumulator) error
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req.SetBasicAuth(p.Username, p.Password)
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}
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if p.HTTPHeaders != nil {
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for key, value := range p.HTTPHeaders {
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req.Header.Add(key, value)
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}
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}
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var resp *http.Response
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if u.URL.Scheme != "unix" {
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//nolint:bodyclose // False positive (because of if-else) - body will be closed in `defer`
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@ -2,25 +2,25 @@
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[[inputs.prometheus]]
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## An array of urls to scrape metrics from.
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urls = ["http://localhost:9100/metrics"]
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## Metric version controls the mapping from Prometheus metrics into Telegraf metrics.
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## See "Metric Format Configuration" in plugins/inputs/prometheus/README.md for details.
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## Valid options: 1, 2
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# metric_version = 1
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## Url tag name (tag containing scrapped url. optional, default is "url")
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# url_tag = "url"
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## Whether the timestamp of the scraped metrics will be ignored.
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## If set to true, the gather time will be used.
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# ignore_timestamp = false
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## An array of Kubernetes services to scrape metrics from.
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# kubernetes_services = ["http://my-service-dns.my-namespace:9100/metrics"]
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## Kubernetes config file to create client from.
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# kube_config = "/path/to/kubernetes.config"
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## Scrape Kubernetes pods for the following prometheus annotations:
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## - prometheus.io/scrape: Enable scraping for this pod
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## - prometheus.io/scheme: If the metrics endpoint is secured then you will need to
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@ -28,20 +28,20 @@
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## - prometheus.io/path: If the metrics path is not /metrics, define it with this annotation.
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## - prometheus.io/port: If port is not 9102 use this annotation
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# monitor_kubernetes_pods = true
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## Get the list of pods to scrape with either the scope of
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## - cluster: the kubernetes watch api (default, no need to specify)
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## - node: the local cadvisor api; for scalability. Note that the config node_ip or the environment variable NODE_IP must be set to the host IP.
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# pod_scrape_scope = "cluster"
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## Only for node scrape scope: node IP of the node that telegraf is running on.
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## Either this config or the environment variable NODE_IP must be set.
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# node_ip = "10.180.1.1"
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## Only for node scrape scope: interval in seconds for how often to get updated pod list for scraping.
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## Default is 60 seconds.
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# pod_scrape_interval = 60
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## Restricts Kubernetes monitoring to a single namespace
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## ex: monitor_kubernetes_pods_namespace = "default"
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# monitor_kubernetes_pods_namespace = ""
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@ -54,7 +54,7 @@
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# eg. To scrape pods on a specific node
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# kubernetes_field_selector = "spec.nodeName=$HOSTNAME"
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# cache refresh interval to set the interval for re-sync of pods list.
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# cache refresh interval to set the interval for re-sync of pods list.
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# Default is 60 minutes.
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# cache_refresh_interval = 60
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@ -70,28 +70,31 @@
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# url = 'http://{{if ne .ServiceAddress ""}}{{.ServiceAddress}}{{else}}{{.Address}}{{end}}:{{.ServicePort}}/{{with .ServiceMeta.metrics_path}}{{.}}{{else}}metrics{{end}}'
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# [inputs.prometheus.consul.query.tags]
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# host = "{{.Node}}"
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## Use bearer token for authorization. ('bearer_token' takes priority)
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# bearer_token = "/path/to/bearer/token"
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## OR
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# bearer_token_string = "abc_123"
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## HTTP Basic Authentication username and password. ('bearer_token' and
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## 'bearer_token_string' take priority)
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# username = ""
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# password = ""
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## Optional custom HTTP headers
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# headers = {"X-Special-Header" = "Special-Value"}
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## Specify timeout duration for slower prometheus clients (default is 3s)
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# response_timeout = "3s"
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## HTTP Proxy support
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# use_system_proxy = false
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# http_proxy_url = ""
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## Optional TLS Config
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# tls_ca = /path/to/cafile
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# tls_cert = /path/to/certfile
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# tls_key = /path/to/keyfile
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## Use TLS but skip chain & host verification
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# insecure_skip_verify = false
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