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docs/sd_configs.md: document docker_sd_configs

2022-08-05 15:36:27 +03:00

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Prometheus service discovery

vmagent and single-node VictoriaMetrics supports the following Prometheus-compatible service discovery options for Prometheus-compatible scrape targets in the file pointed by -promscrape.config command-line flag.

azure_sd_configs is for scraping the targets registered in Azure Cloud. See these docs.
consul_sd_configs is for discovering and scraping targets registered in Consul. See these docs.
digitalocean_sd_configs is for discovering and scraping targerts registered in DigitalOcean. See these docs.
dns_sd_configs is for discovering and scraping targets from DNS records (SRV, A and AAAA). See these docs.
docker_sd_configs is for discovering and scraping Docker targets. See these docs.
dockerswarm_sd_configs is for discovering and scraping Docker Swarm targets. See dockerswarm_sd_config.
ec2_sd_configs is for discovering and scraping Amazon EC2 targets. See ec2_sd_config. vmagent doesn't support the profile config param yet.
eureka_sd_configs is for discovering and scraping targets registered in Netflix Eureka. See eureka_sd_config.
file_sd_configs is for scraping targets defined in external files (aka file-based service discovery). See these docs.
gce_sd_configs is for discovering and scraping Google Compute Engine (GCE) targets. See gce_sd_config. vmagent provides the following additional functionality for gce_sd_config:
- if project arg is missing then vmagent uses the project for the instance where it runs;
- if zone arg is missing then vmagent uses the zone for the instance where it runs;
- if zone arg equals to "*", then vmagent discovers all the zones for the given project;
- zone may contain a list of zones, i.e. zone: [us-east1-a, us-east1-b].
http_sd_configs is for discovering and scraping targerts provided by external http-based service discovery. See http_sd_config.
kubernetes_sd_configs is for discovering and scraping Kubernetes (K8S) targets. See kubernetes_sd_config.
openstack_sd_configs is for discovering and scraping OpenStack targets. See openstack_sd_config. OpenStack identity API v3 is supported only.
static_configs is for scraping statically defined targets. See these docs.
yandexcloud_sd_configs is for discoverying and scraping Yandex Cloud targets. See these docs.

Note that the refresh_interval option isn't supported for these scrape configs. Use the corresponding -promscrape.*CheckInterval command-line flag instead. For example, -promscrape.consulSDCheckInterval=60s sets refresh_interval for all the consul_sd_configs entries to 60s. Run vmagent -help or victoria-metrics -help in order to see default values for the -promscrape.*CheckInterval flags.

Please file feature requests to our issue tracker if you need other service discovery mechanisms to be supported by VictoriaMetrics and vmagent.

azure_sd_configs

Azure SD configurations allow retrieving scrape targets from Microsoft Azure VMs.

The following meta labels are available on targets during relabeling:

__meta_azure_machine_id: the machine ID
__meta_azure_machine_location: the location the machine runs in
__meta_azure_machine_name: the machine name
__meta_azure_machine_computer_name: the machine computer name
__meta_azure_machine_os_type: the machine operating system
__meta_azure_machine_private_ip: the machine's private IP
__meta_azure_machine_public_ip: the machine's public IP if it exists
__meta_azure_machine_resource_group: the machine's resource group
__meta_azure_machine_tag_<tagname>: each tag value of the machine
__meta_azure_machine_scale_set: the name of the scale set which the vm is part of (this value is only set if you are using a scale set)
__meta_azure_subscription_id: the subscription ID
__meta_azure_tenant_id: the tenant ID

Configuration example:

scrape_configs:
- job_name: azure
  azure_sd_configs:
    # subscription_id is a mandatory subscription ID.
  - subscription_id: "..."

    # environment is an optional Azure environment. By default "AzurePublicCloud" is used.
    # environment: ...

    # authentication_method is an optional authentication method, either OAuth or ManagedIdentity.
    # See https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/overview
    # By default OAuth is used.
    # authentication_method: ...

    # tenant_id is an optional tenant ID. Only required with authentication_method OAuth.
    # tenant_id: "..."

    # client_id is an optional client ID. Only required with authentication_method OAuth.
    # client_id: "..."

    # client_secret is an optional client secret. Only required with authentication_method OAuth.
    # client_secret: "..."

    # resource_group is an optional resource group name. Limits discovery to this resource group. 
    # resource_group: "..."

    # port is an optional port to scrape metrics from.
    # port: ...

    # Additional HTTP API client options can be specified here.
    # See https://docs.victoriametrics.com/sd_configs.html#http-api-client-options

consul_sd_configs

Consul SD configurations allow retrieving scrape targets from Consul's Catalog API.

The following meta labels are available on targets during relabeling:

__meta_consul_address: the address of the target
__meta_consul_dc: the datacenter name for the target
__meta_consul_health: the health status of the service
__meta_consul_metadata_<key>: each node metadata key value of the target
__meta_consul_node: the node name defined for the target
__meta_consul_service_address: the service address of the target
__meta_consul_service_id: the service ID of the target
__meta_consul_service_metadata_<key>: each service metadata key value of the target
__meta_consul_service_port: the service port of the target
__meta_consul_service: the name of the service the target belongs to
__meta_consul_tagged_address_<key>: each node tagged address key value of the target
__meta_consul_tags: the list of tags of the target joined by the tag separator

Configuration example:

scrape_configs:
- job_name: consul
  consul_sd_configs:
    # server is an optional Consul server to connect to. By default localhost:8500 is used
  - server: "localhost:8500"

    # token is an optional Consul API token.
    # If the token isn't specified, then it is read from a file pointed by CONSUL_HTTP_TOKEN_FILE
    # environment var or from the CONSUL_HTTP_TOKEN environment var.
    # token: "..."

    # datacenter is an optional Consul API datacenter.
    # If the datacenter isn't specified, then it is read from Consul server.
    # See https://www.consul.io/api-docs/agent#read-configuration
    # datacenter: "..."

    # namespace is an optional Consul namespace.
    # If the namespace isn't specified, then it is read from CONSUL_NAMESPACE environment var.
    # namespace: "..."

    # scheme is an optional scheme (http or https) to use for connecting to Consul server.
    # By default http scheme is used.
    # scheme: "..."

    # services is an optional list of services for which targets are retrieved.
    # If omitted, all services are scraped.
    # See https://www.consul.io/api-docs/catalog#list-nodes-for-service .
    # services: ["...", "..."]

    # tags is an optional list of tags used to filter nodes for a given service.
    # Services must contain all tags in the list.
    # tags: ["...", "..."]

    # node_meta is an optional node metadata key/value pairs to filter nodes for a given service.
    # node_meta:
    #   "...": "..."

    # tag_separate is an optional string by which Consul tags are joined into the __meta_consul_tags label.
    # By default "," is used as a tag separator.
    # tag_separator: "..."

    # allow_stale is an optional config, which allows stale Consul results.
    # See https://www.consul.io/api/features/consistency.html
    # Reduce load on Consul if set to true. By default is is set to true.
    # allow_stale: ...

    # Additional HTTP API client options can be specified here.
    # See https://docs.victoriametrics.com/sd_configs.html#http-api-client-options

digitalocean_sd_configs

DigitalOcean SD configurations allow retrieving scrape targets from DigitalOcean's Droplets API.

The following meta labels are available on targets during relabeling:

__meta_digitalocean_droplet_id: the id of the droplet
__meta_digitalocean_droplet_name: the name of the droplet
__meta_digitalocean_image: the slug of the droplet's image
__meta_digitalocean_image_name: the display name of the droplet's image
__meta_digitalocean_private_ipv4: the private IPv4 of the droplet
__meta_digitalocean_public_ipv4: the public IPv4 of the droplet
__meta_digitalocean_public_ipv6: the public IPv6 of the droplet
__meta_digitalocean_region: the region of the droplet
__meta_digitalocean_size: the size of the droplet
__meta_digitalocean_status: the status of the droplet
__meta_digitalocean_features: the comma-separated list of features of the droplet
__meta_digitalocean_tags: the comma-separated list of tags of the droplet
__meta_digitalocean_vpc: the id of the droplet's VPC

Configuration example:

scrape_configs:
- job_name: digitalocean
  digitalocean_sd_configs:
    # server is an optional DigitalOcean API server to query.
    # By default https://api.digitalocean.com is used.
  - server: "https://api.digitalocean.com"

    # port is an optional port to scrape metrics from. By default port 80 is used.
    # port: ...

    # Additional HTTP API client options can be specified here.
    # See https://docs.victoriametrics.com/sd_configs.html#http-api-client-options

dns_sd_configs

DNS-based service discovery configuration allows specifying a set of DNS domain names which are periodically queried to discover a list of targets.

The following meta labels are available on targets during relabeling:

__meta_dns_name: the record name that produced the discovered target.
__meta_dns_srv_record_target: the target field of the SRV record
__meta_dns_srv_record_port: the port field of the SRV record

Configuration example:

scrape_configs:
- job_name: dns
  dns_sd_configs:
    # names must contain a list of DNS names to query.
  - names: ["...", "..."]

    # type is an optional type of DNS query to perform.
    # Supported values are: SRV, A, or AAAA.
    # By default SRV is used.
    # type: ...

    # port is a port number to use if the query type is not SRV.
    # port: ...

docker_sd_configs

Docker SD configurations allow retrieving scrape targets from Docker Engine hosts.

Available meta labels:

__meta_docker_container_id: the id of the container
__meta_docker_container_name: the name of the container
__meta_docker_container_network_mode: the network mode of the container
__meta_docker_container_label_<labelname>: each label of the container
__meta_docker_network_id: the ID of the network
__meta_docker_network_name: the name of the network
__meta_docker_network_ingress: whether the network is ingress
__meta_docker_network_internal: whether the network is internal
__meta_docker_network_label_<labelname>: each label of the network
__meta_docker_network_scope: the scope of the network
__meta_docker_network_ip: the IP of the container in this network
__meta_docker_port_private: the port on the container
__meta_docker_port_public: the external port if a port-mapping exists
__meta_docker_port_public_ip: the public IP if a port-mapping exists

Configuration example:

scrape_configs:
- job_name: docker
  docker_sd_configs:

    # host must contain the address of the Docker daemon.
  - host: "..."

    # port is an optional port to scrape metrics from, when `role` is nodes,
    # and for discovered tasks and services that don't have published ports.
    # By default port 80 is used.
    # port: ...

    # host_networking_host is an optional host to use if the container is in host networking mode.
    # By default localhost is used.
    # host_networking_host: "..."

    # filters is an optional filters to limit the discovery process to a subset of available resources.
    # See https://docs.docker.com/engine/api/v1.40/#operation/ContainerList
    # filters:
    # - name: "..."
    #   values: ["...", "..."]

    # Additional HTTP API client options can be specified here.
    # See https://docs.victoriametrics.com/sd_configs.html#http-api-client-options

yandexcloud_sd_configs

Yandex Cloud SD configurations allow retrieving scrape targets from accessible folders.

Only compute instances currently supported and the following meta labels are available on targets during relabeling:

__meta_yandexcloud_instance_name: the name of instance
__meta_yandexcloud_instance_id: the id of instance
__meta_yandexcloud_instance_fqdn: generated FQDN for instance
__meta_yandexcloud_instance_status: the status of instance
__meta_yandexcloud_instance_platform_id: instance platform ID (i.e. "standard-v3")
__meta_yandexcloud_instance_resources_cores: instance vCPU cores
__meta_yandexcloud_instance_resources_core_fraction: instance core fraction
__meta_yandexcloud_instance_resources_memory: instance memory
__meta_yandexcloud_folder_id: instance folder ID
__meta_yandexcloud_instance_label_<label name>: each label from instance
__meta_yandexcloud_instance_private_ip_<interface index>: private IP of network interface
__meta_yandexcloud_instance_public_ip_<interface index>: public (NAT) IP of network interface
__meta_yandexcloud_instance_private_dns_<record number>: if configured DNS records for private IP
__meta_yandexcloud_instance_public_dns_<record number>: if configured DNS records for public IP

Configuration example:

scrape_configs:
- job_name: yandexcloud
  yandexcloud_sd_configs:
    # service is a mandatory option for yandexcloud service discovery
    # currently only "compute" service is supported
  - service: compute

    # api_endpoint is an optional API endpoint for service discovery
    # The https://api.cloud.yandex.net endpoint is used by default.
    # api_endpoint: "https://api.cloud.yandex.net"

    # yandex_passport_oauth_token is an optional OAuth token
    # for querying yandexcloud API. See https://cloud.yandex.com/en-ru/docs/iam/concepts/authorization/oauth-token
    # yandex_passport_oauth_token: "..."

    # tls_config is an optional tls config.
    # See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#tls_config
    # tls_config:
    #   ...

Yandex Cloud SD support both user OAuth token and instance service account if yandex_passport_oauth_token is omitted:

scrape_configs:
- job_name: YC_with_oauth
  yandexcloud_sd_configs:
  - service: compute
    yandex_passport_oauth_token: "AQAAAAAsfasah<...>7E10SaotuL0"
  relabel_configs:
  - source_labels: [__meta_yandexcloud_instance_public_ip_0]
    target_label: __address__
    replacement: "$1:9100"

- job_name: YC_with_Instance_service_account
  yandexcloud_sd_configs:
  - service: compute
  relabel_configs:
  - source_labels: [__meta_yandexcloud_instance_private_ip_0]
    target_label: __address__
    replacement: "$1:9100"

HTTP API client options

The following additional options can be specified in the majority of supported service discovery types:

    # authorization is an optional `Authorization` header configuration.
    # authorization:
    #   type: "..."  # default: Bearer
    #   credentials: "..."
    #   credentials_file: "..."

    # basic_auth is an optional HTTP basic authentication configuration.
    # basic_auth:
    #   username: "..."
    #   password: "..."
    #   password_file: "..."

    # bearer_token is an optional Bearer token to send in every HTTP API request during service discovery.
    # bearer_token: "..."

    # bearer_token_file is an optional path to file with Bearer token to send
    # in every HTTP API request during service discovery.
    # The file is re-read every second, so its contents can be updated without the need to restart the service discovery.
    # bearer_token_file: "..."

    # oauth2 is an optional OAuth 2.0 configuration.
    # See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#oauth2
    # oauth2:
    #   ...

    # tls_config is an optional TLS configuration.
    # See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#tls_config
    # tls_config:
    #   ...

    # proxy_url is an optional URL for the proxy to use for HTTP API queries during service discovery.
    # proxy_url: "..."

    # proxy_authorization is an optional `Authorization` header config for the proxy_url.
    # proxy_authorization:
    #   type: "..."  # default: Bearer
    #   credentials: "..."
    #   credentials_file: "..."

    # proxy_basic_auth is an optional HTTP basic authentication configuration for the proxy_url.
    # proxy_basic_auth:
    #   username: "..."
    #   password: "..."
    #   password_file: "..."

    # proxy_bearer_token is an optional Bearer token to send to proxy_url.
    # proxy_bearer_token: "..."

    # proxy_bearer_token_file is an optional path to file with Bearer token to send to proxy_url.
    # The file is re-read every second, so its contents can be updated without the need to restart the service discovery.
    # proxy_bearer_token_file: "..."

    # proxy_oauth2 is an optional OAuth 2.0 configuration for the proxy_url.
    # See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#oauth2
    # proxy_oauth2:
    #   ...

    # proxy_tls_config is an optional TLS configuration for the proxy_url.
    # See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#tls_config
    # proxy_tls_config:
    #   ...

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Prometheus service discovery

azure_sd_configs

consul_sd_configs

digitalocean_sd_configs

dns_sd_configs

docker_sd_configs

yandexcloud_sd_configs

HTTP API client options

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