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Cloudprober is a monitoring software that makes it super-easy to monitor availability and performance of various components of your system. Cloudprober employs the "active" monitoring model. It runs probes against (or on) your components to verify that they are working as expected. For example, it can run a probe to verify that your frontends can reach your backends. Similarly it can run a probe to verify that your in-Cloud VMs can actually reach your on-premise systems. This kind of monitoring makes it possible to monitor your systems' interfaces regardless of the implementation and helps you quickly pin down what's broken in your system.

Cloudprober UseCase


  • Integration with open source monitoring stack of Prometheus and Grafana. Cloudprober exports probe results as counter based metrics that work well with Prometheus and Grafana.
  • Automated target discovery for Cloud targets. GCE and Kubernetes are supported out-of-the-box; other Cloud providers can be added easily.
  • Integration with StackDriver. If configured, Cloudprober exports probe results to StackDriver as custom metrics.
  • Built-in implementations for the most common probe types: PING, HTTP, UDP, DNS.
  • Arbitrary, complex probes can be run through the external probe type. For example, you could write a simple script to insert and delete a row in your database, and execute this script through the 'EXTERNAL' probe type.
  • Fast and efficient ping prober implementation that allows probing thousands of hosts with minimal resources.
  • Strong focus on ease of deployment. Cloudprober is written entirely in Go and compiles into a static binary. It can be easily deployed through docker containers. Thanks to the automated target discovery, there is usually no need to re-deploy or re-configure cloudprober in response to the most of the changes.
  • Go templates based config file with substitutions for standard variables like project, zone, instance names etc allows for using same config file across the fleet.
  • Low footprint. Cloudprober docker image is small, containing just the statically compiled binary and it takes very little CPU and RAM to run even a large number of probes.
  • Extensible architecture. Cloudprober can be easily extended along most of the dimensions. Adding support for other Cloud targets, monitoring systems (e.g. Graphite, Amazon Cloudwatch) and even a new probe type, is straight-forward and fairly easy.

Visit to get started with Cloudprober.

We'd love to hear your feedback. If you're using Cloudprober, would you please mind sharing how you use it by adding a comment to the issue #123. It will be a great help in planning Cloudprober's future progression.

Join Cloudprober Slack or mailing list for questions and discussion about Cloudprober.

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Package cloudprober provides a prober for running a set of probes.

Cloudprober takes in a config proto which dictates what probes should be created with what configuration, and manages the asynchronous fan-in/fan-out of the metrics data from these probes.



View Source
const (
	DefaultServerHost = ""
	DefaultServerPort = 9313
	ServerHostEnvVar  = "CLOUDPROBER_HOST"
	ServerPortEnvVar  = "CLOUDPROBER_PORT"

Constants defining the default server host and port.


This section is empty.


func GetConfig

func GetConfig() string

GetConfig returns the prober config.

func GetInfo

GetInfo returns information on all the probes, servers and surfacers.

func InitFromConfig

func InitFromConfig(configFile string) error

InitFromConfig initializes Cloudprober using the provided config.

func Start

func Start(ctx context.Context)

Start starts a previously initialized Cloudprober.


This section is empty.

Source Files


Path Synopsis
cmd Binary cloudprober is a tool for running a set of probes and metric surfacers on a GCE VM.
common/file Package file implements utilities to read files from various backends.
common/iputils Package iputils implements utilities to work with IP addresses.
common/message Package message implements wrappers for sending and receiving messages with sequence numbers and timestamps.
common/oauth Package oauth implements OAuth related utilities for Cloudprober.
common/tlsconfig Package tlsconfig implements utilities to parse TLSConfig.
config Package config provides parser for cloudprober configs.
config/runconfig Package runconfig stores cloudprober config that is specific to a single invocation.
contrib/gcp/bigquery Package bigquery connects to the GCP BigQuery API and computes metrics suitable for blackbox-probing.
contrib/gcp/cmd Bigquery_probe is an external Cloudprober probe suitable for blackbox-probing the GCP BigQuery API.
examples/external Binary redis_probe_once implements an example cloudprober external probe that puts a key-value in a redis server, retrieves it and reports time taken for both operations.
logger Package logger provides a logger that logs to Google Cloud Logging.
metrics Package metrics implements data types for probes generated data.
metrics/payload Package payload provides utilities to work with the metrics in payload.
metrics/testutils Package testutils provides utilities for tests.
prober Package prober provides a prober for running a set of probes.
prober/cmd This binary implements a Cloudprober gRPC client.
probes Package probes provides an interface to initialize probes using prober config.
probes/common/statskeeper Package statskeeper implements utilities that are shared across multiple probe types.
probes/dns Package dns implements a DNS prober.
probes/dns/cmd Dns_bin implements a stand-alone dns prober binary using the cloudprober/probes/dns package.
probes/external Package external implements an external probe type for cloudprober.
probes/external/cmd This program implements a stand-alone external prober binary using the cloudprober/probes/external package.
probes/external/serverutils Package serverutils provides utilities to work with the cloudprober's external probe.
probes/grpc Package grpc implements a gRPC probe.
probes/http Package http implements HTTP probe type.
probes/http/cmd This program implements a stand-alone http prober binary using the cloudprober/http package.
probes/options Package options provides a shared interface to common probe options.
probes/ping Package ping implements a fast ping prober.
probes/ping/cmd This program implements a stand-alone ping prober binary using the cloudprober/ping package.
probes/probeutils Package probeutils implements utilities that are shared across multiple probe types.
probes/udp Package udp implements a UDP prober.
probes/udp/cmd Udp_bin implements a stand-alone udp prober binary using the cloudprober/probes/udp package.
probes/udplistener Package udplistener implements a UDP listener.
rds/client Package client implements a ResourceDiscovery service (RDS) client.
rds/client/cmd This binary implements a standalone ResourceDiscovery service (RDS) client.
rds/gcp Package gcp implements a GCP (Google Compute Platform) resources provider for ResourceDiscovery server.
rds/kubernetes Package kubernetes implements a kubernetes resources provider for ResourceDiscovery server.
rds/server Package server provides a ResourceDiscovery gRPC server implementation.
rds/server/cmd This binary implements a stand-alone ResourceDiscovery server.
rds/server/filter Package filter implements common filters for the RDS (resource discovery service) providers.
servers Package servers provides an interface to initialize cloudprober servers using servers config.
servers/grpc Package grpc provides a simple gRPC server that acts as a probe target.
servers/http Package http implements an HTTP server that simply returns 'ok' for any URL and sends stats on a string channel.
servers/udp Package udp implements a UDP server.
servers/udp/cmd This binary implements a stand-alone UDP server using the cloudprober/servers/udp/udp package.
surfacers Package surfacers is the base package for creating Surfacer objects that are used for writing metics data to different monitoring services.
surfacers/common/compress Package compress implements compression related utilities.
surfacers/file Package file implements the "file" surfacer.
surfacers/postgres Package postgres implements "postgres" surfacer.
surfacers/prometheus Package prometheus provides a prometheus surfacer for Cloudprober.
surfacers/pubsub Package pubsub implements the "pubsub" surfacer.
surfacers/stackdriver Package stackdriver implements the Stackdriver version of the Surfacer object.
sysvars Package sysvars implements a system variables exporter.
targets Package targets provides the means to list and resolve targets for probers in the cloudprober framework.
targets/endpoint Package endpoint provides the type Endpoint, to be used with the targets.Targets interface.
targets/file Package file implements a file-based targets for cloudprober.
targets/gce Package gce implements Google Compute Engine (GCE) targets for Cloudprober.
targets/lameduck Package lameduck implements a lameducks provider.
targets/resolver Package resolver provides a caching, non-blocking DNS resolver.
targets/rtc/rtcservice Package rtcservice provides utility functions for the cloudprober project used when dealing with the Runtime Configurator API.
validators Package validators provides an entrypoint for the cloudprober's validators framework.
validators/http Package http provides an HTTP validator for the Cloudprober's validator framework.
validators/integrity Package integrity provides data integrity validator for the Cloudprober's validator framework.
validators/regex Package regex provides regex validator for the Cloudprober's validator framework.
web Package web provides web interface for cloudprober.
web/formatutils Package formatutils provides web related utils for the cloudprober sub-packages.