Managing uptime checks

Stackdriver can verify the availability of your service by accessing it from locations around the world. You can use the results from these uptime checks in your alerting policies, or you can directly monitor the results in the Monitoring uptime-check dashboards.

This page shows you how to do the following:

  • Create a new uptime check.
  • List your existing uptime checks.
  • Edit an uptime check.
  • Delete an uptime check.

To view the status of your uptime checks, or to get a list of the IP addresses that might be used to perform uptime checks, see Getting IP addresses. To determine the status of your uptime checks using the API, monitor the metric monitoring.googleapis.com/uptime_check/check_passed. See GCP metrics list for details.

Before you begin

  1. Your use of uptime checks is affected by any firewalls protecting your service.

    • If the resource you are checking isn't publicly available, you must configure the resource's firewall to permit incoming traffic from the uptime-check servers. See Getting IP addresses to download a list of the IP addresses.
    • If the resource you are checking doesn't have an external IP address, uptime checks are unable to reach it.

  2. The uptime check doesn't load page assets or run JavaScript. The default configuration of an uptime check doesn't include authentication. You can enable authentication using the Advanced options.

    For HTTP and HTTPS, the uptime check issues a GET command and retrieves the raw data. If the GET response is a redirection to another URL, the check retrieves the data from that URL. Lastly, the uptime check evaluates the data to determine if the check succeeded or failed.

    To succeed, two conditions must be met:

    • The HTTP status is Success.
    • The data has no required content or the required content is present. Required content is specified using the Advanced options.

Creating uptime checks

This section explains how to create and configure uptime checks.

Console

  1. In the Stackdriver Monitoring console, go to Uptime checks > Uptime checks overview:

    Go to Uptime Checks Overview

  2. In the top-right corner, click Add uptime check.

  3. In the New uptime check window, fill in the fields for the check, as described in Basic options on this page.

    Create uptime check

  4. Optionally, to access configuration for port, custom headers, and authentication click Advanced options. For details, see Advanced options on this page.

  5. To see the result of your uptime check, click Test. If the result isn't what you expect, see the Check failures section below, correct your configuration, and repeat the test.

  6. Click Save. You cannot save an uptime check if any required field is missing. If the Save button is disabled, check for missing values. You must enter a value in the Hostname field.

API

Call the projects.uptimeCheckConfigs.create method. Set the method's parameters as follows:

  • parent: Required. This must be the name of the project in which to create the uptime check. Replace [PROJECT_ID] with your GCP project ID. The format is:

    projects/[PROJECT_ID]

  • The request body must contain an UptimeCheckConfig object for the new new uptime check. The fields in the object are explained in the Basic options and Advanced options sections on this page.

    Leave the name field of the configuration object blank as it is set in the returned configuration object.

The create method returns the UptimeCheckConfig object for the new configuration.

If the created uptime configuration doesn't work as expected, see the Check failures section on this page.

C#

public static object CreateUptimeCheck(string projectId, string hostName,
    string displayName)
{
    // Define a new config.
    var config = new UptimeCheckConfig()
    {
        DisplayName = displayName,
        MonitoredResource = new MonitoredResource()
        {
            Type = "uptime_url",
            Labels = { { "host", hostName } }
        },
        HttpCheck = new UptimeCheckConfig.Types.HttpCheck()
        {
            Path = "/",
            Port = 80,
        },
        Timeout = TimeSpan.FromSeconds(10).ToDuration(),
        Period = TimeSpan.FromMinutes(5).ToDuration()
    };
    // Create a client.
    var client = UptimeCheckServiceClient.Create();
    string projectName = new ProjectName(projectId).ToString();
    // Create the config.
    var newConfig = client.CreateUptimeCheckConfig(projectName, config,
        CallSettings.FromCallTiming(CallTiming.FromTimeout(TimeSpan.FromMinutes(2))));
    Console.WriteLine(newConfig.Name);
    return 0;
}

Java

private static void createUptimeCheck(
    String projectId, String displayName, String hostName, String pathName) throws IOException {
  CreateUptimeCheckConfigRequest request = CreateUptimeCheckConfigRequest
      .newBuilder()
      .setParent(ProjectName.format(projectId))
      .setUptimeCheckConfig(UptimeCheckConfig
          .newBuilder()
          .setDisplayName(displayName)
          .setMonitoredResource(MonitoredResource
              .newBuilder()
              .setType("uptime_url")
              .putLabels("host", hostName))
          .setHttpCheck(HttpCheck
              .newBuilder()
              .setPath(pathName)
              .setPort(80))
          .setTimeout(Duration.newBuilder().setSeconds(10))
          .setPeriod(Duration.newBuilder().setSeconds(300)))
      .build();
  try (UptimeCheckServiceClient client = UptimeCheckServiceClient.create()) {
    UptimeCheckConfig config = client.createUptimeCheckConfig(request);
    System.out.println("Uptime check created: " + config.getDisplayName());
  } catch (Exception e) {
    usage("Exception creating uptime check: " + e.toString());
    throw e;
  }
}

Go

// create creates an example uptime check.
func create(w io.Writer, projectID string) (*monitoringpb.UptimeCheckConfig, error) {
	ctx := context.Background()
	client, err := monitoring.NewUptimeCheckClient(ctx)
	if err != nil {
		return nil, fmt.Errorf("NewUptimeCheckClient: %v", err)
	}
	defer client.Close()
	req := &monitoringpb.CreateUptimeCheckConfigRequest{
		Parent: "projects/" + projectID,
		UptimeCheckConfig: &monitoringpb.UptimeCheckConfig{
			DisplayName: "new uptime check",
			Resource: &monitoringpb.UptimeCheckConfig_MonitoredResource{
				MonitoredResource: &monitoredres.MonitoredResource{
					Type: "uptime_url",
					Labels: map[string]string{
						"host": "example.com",
					},
				},
			},
			CheckRequestType: &monitoringpb.UptimeCheckConfig_HttpCheck_{
				HttpCheck: &monitoringpb.UptimeCheckConfig_HttpCheck{
					Path: "/",
					Port: 80,
				},
			},
			Timeout: &duration.Duration{Seconds: 10},
			Period:  &duration.Duration{Seconds: 300},
		},
	}
	config, err := client.CreateUptimeCheckConfig(ctx, req)
	if err != nil {
		return nil, fmt.Errorf("CreateUptimeCheckConfig: %v", err)
	}
	fmt.Fprintf(w, "Successfully created uptime check %q\n", config.GetDisplayName())
	return config, nil
}

Node.js

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates a client
const client = new monitoring.UptimeCheckServiceClient();

/**
 * TODO(developer): Uncomment and edit the following lines of code.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const hostname = 'mydomain.com';

const request = {
  // i.e. parent: 'projects/my-project-id'
  parent: client.projectPath(projectId),
  uptimeCheckConfig: {
    displayName: 'My Uptime Check',
    monitoredResource: {
      // See the Uptime Check docs for supported MonitoredResource types
      type: 'uptime_url',
      labels: {host: hostname},
    },
    httpCheck: {path: '/', port: 80},
    timeout: {seconds: 10},
    period: {seconds: 300},
  },
};

// Creates an uptime check config for a GCE instance
const [uptimeCheckConfig] = await client.createUptimeCheckConfig(request);
console.log('Uptime check created:');
console.log(`ID: ${uptimeCheckConfig.name}`);
console.log(`Display Name: ${uptimeCheckConfig.displayName}`);
console.log(`Resource: %j`, uptimeCheckConfig.monitoredResource);
console.log(`Period: %j`, uptimeCheckConfig.period);
console.log(`Timeout: %j`, uptimeCheckConfig.timeout);
console.log(`Check type: ${uptimeCheckConfig.check_request_type}`);
console.log(
  `Check: %j`,
  uptimeCheckConfig.httpCheck || uptimeCheckConfig.tcpCheck
);
console.log(
  `Content matchers: ${uptimeCheckConfig.contentMatchers
    .map(matcher => matcher.content)
    .join(', ')}`
);
console.log(`Regions: ${uptimeCheckConfig.selectedRegions.join(', ')}`);

PHP

use Google\Cloud\Monitoring\V3\UptimeCheckServiceClient;
use Google\Cloud\Monitoring\V3\UptimeCheckConfig;
use Google\Api\MonitoredResource;

/**
 * Example:
 * ```
 * create_uptime_check($projectId, 'myproject.appspot.com', 'Test Uptime Check!');
 * ```
 *
 * @param string $projectId Your project ID
 * @param string $hostName
 * @param string $displayName
 */
function create_uptime_check($projectId, $hostName = 'example.com', $displayName = 'New uptime check')
{
    $uptimeCheckClient = new UptimeCheckServiceClient([
        'projectId' => $projectId,
    ]);

    $monitoredResource = new MonitoredResource();
    $monitoredResource->setType('uptime_url');
    $monitoredResource->setLabels(['host' => $hostName]);

    $uptimeCheckConfig = new UptimeCheckConfig();
    $uptimeCheckConfig->setDisplayName($displayName);
    $uptimeCheckConfig->setMonitoredResource($monitoredResource);

    $uptimeCheckConfig = $uptimeCheckClient->createUptimeCheckConfig(
        $uptimeCheckClient->projectName($projectId),
        $uptimeCheckConfig
    );

    printf('Created an uptime check: %s' . PHP_EOL, $uptimeCheckConfig->getName());
}

Python

def create_uptime_check_config(project_name, host_name=None,
                               display_name=None):
    config = monitoring_v3.types.uptime_pb2.UptimeCheckConfig()
    config.display_name = display_name or 'New uptime check'
    config.monitored_resource.type = 'uptime_url'
    config.monitored_resource.labels.update(
        {'host': host_name or 'example.com'})
    config.http_check.path = '/'
    config.http_check.port = 80
    config.timeout.seconds = 10
    config.period.seconds = 300

    client = monitoring_v3.UptimeCheckServiceClient()
    new_config = client.create_uptime_check_config(project_name, config)
    pprint.pprint(new_config)
    return new_config

Ruby

def create_uptime_check_config project_id: nil, host_name: nil, display_name: nil
  require "google/cloud/monitoring/v3"

  client = Google::Cloud::Monitoring::V3::UptimeCheck.new
  project_name = Google::Cloud::Monitoring::V3::UptimeCheckServiceClient.project_path(project_id)
  config = {
    display_name: display_name.nil? ? 'New uptime check' : display_name,
    monitored_resource: { 
      type: 'uptime_url',
      labels: {'host' => host_name.nil? ? 'example.com': host_name }
    },
    http_check: { path:  '/', port: 80 },
    timeout: { seconds: 10 },
    period: { seconds: 300 }
  }
  client = Google::Cloud::Monitoring::V3::UptimeCheck.new
  new_config = client.create_uptime_check_config(project_name, config)
  puts new_config.name
  return new_config
end

There can be a delay of up to 25 minutes before the uptime check results start to flow into Monitoring. During that time, the uptime check dashboard reports the status as "no data available."

Basic options

To create a new uptime check, you specify values for the uptime check's configuration. When creating the uptime check in the Stackdriver Monitoring console, you fill in a form. When creating the uptime check in the API, you supply the corresponding parameters to an UptimeCheckConfig object.

  1. Title: A name to identify your check. For example, Example.com uptime check.

  2. Check Type: Select an HTTP, HTTPS, or TCP protocol.

    If you select HTTPS, the service attempts to connect over HTTPS, but doesn't validate the SSL certificate. For example, expired or self-signed certificates won't cause a check to fail.

  3. Resource type: Choose one of the following resource types:

    • App Engine: App Engine applications (modules).
    • Elastic Load Balancer: AWS load balancer.
    • Instance: Compute Engine or AWS EC2 instances. In the API, this is split into gce_instance and aws_ec2_instance.
    • URL: Any IPv4 address or hostname. Path and port are entered separately.

  4. Complete the connection information, depending on your check type and resource type:

    • Applies to (App Engine, ELB, or Instance): You can apply your uptime check to a single resource or to a group of resources, such as All instances. If you choose a single resource, pick one from your existing resources listed in the menu. If you use the API, fill in the monitored resource with the required resource labels, as described in the Monitored resource list.

    • Module (App Engine): Specify your application module.

    • Hostname (All except for App Engine): Specify your service's host name. For example, enter example.com.

    • Path (HTTP, HTTPS): Enter a path within your host or resource or use the default path. For example, to probe example.com, leave this field blank. To probe example.com/tester, enter /tester. Do not include the prefix example.com. In the API, leave this field blank to use the default value, /.

    • Port (HTTP, HTTPS, TCP): Choose a port for the connection.

      • For HTTP and HTTPS checks, this option is under Advanced Options.
      • In the API, leave this field blank to use the default value: 80 for TCP or HTTP checks, and 443 for HTTPS checks.

    • Response content contains the text (HTTP, HTTPS, TCP): Fill in a string (max 1024 bytes) whose presence in the check response indicates success. The check will fail if the string does not appear anywhere in the response.

      • For HTTP and HTTPS check, this field appears under Advanced Options.
      • In the API, this is the ContentMatcher object.

  5. Check every: 1, 5, 10, or 15 minutes. For example, if you select 5 minutes, each geographic location attempts to reach your service once in every 5 minute period. Using the default 6 locations, and checking every 5 minutes, your service sees an average of 1.2 requests per minute. Checking every 1 minute, your service sees an average of 6 requests per minute.

Advanced options

The Advanced options section applies to HTTP, HTTPS, and TCP check types.

For HTTP and HTTPS, the uptime check issues a GET command and retrieves the raw data. If the GET response is a redirection to another URL, the check retrieves the data from that URL. Lastly, the uptime check evaluates the data to determine if the check succeeded or failed.

To succeed, two conditions must be met:

  1. The HTTP status is Success.
  2. The data has no required content or the required content is present. Required content is specified using the Advanced options.

These settings are optional and vary by check type:

  • HTTP Host Header: Fill this field in to check virtual hosts. This field isn't available for TCP checks.

  • Port: Specify a port number. For TCP checks, this field appears in Basic Options.

  • Response content contains the text: Fill in a string (max 1024 bytes) whose presence in the check response is a condition for success. For TCP checks, this field appears under Basic Options.

  • Locations: Select the applicable geographic regions where your check is to receive requests. You need to select enough regions to have at least three active locations. When creating a check, the locations in each region are listed below the name of the region. New checker locations in selected regions automatically send requests to the configured destinations. To always send requests from all available locations, select Global. To send requests from all location in existing regions, but not new locations in new regions, select all the existing regions but don't select Global.

  • Custom Headers: Supply custom headers, and encrypt them if necessary. Encryption hides the headers' values in the form. Use encryption for headers related to authentication that you don't want other members of your team to see. This field isn't available for TCP checks.

  • Healthcheck Timeout: Specify a timeout, from 1 to 60 seconds. An uptime check fails if healthchecks from more than one location don't get a response within the configured timeout period. If only one healthcheck doesn't get a response, then the uptime check doesn't fail.

  • Authentication: Provide a single username and password. These values are sent as an Authorization header. If you set values here, don't set a separate Authorization header; if you set an Authorization header, don't set values here. Passwords are always hidden in the form. This field isn't available for TCP checks.

Verify your uptime check

When you create an uptime check in the Stackdriver Monitoring console, you can test the configuration before you save it.

Check success

An uptime check is successful if two conditions are true:

  • The HTTP status is Success.
  • The response has no required content or, a search of the response for the required content is successful.

Check failure

The following are some possible causes of an uptime check failure:

  • Connection Error - Refused: If you are using the default HTTP connection type, check that you have a web server installed that is responding to HTTP requests. This can happen on a new instance if you haven't installed a web server; see the Quickstart for Compute Engine. If you use an HTTPS connection type, you might have to perform additional configuration steps. For firewall issues, see Getting IP addresses.
  • Name or service not found: The host name might be incorrect.
  • 403 Forbidden: The service is returning an error code to the uptime checker. For example, the default Apache web server configuration returns this code under Amazon Linux, but it returns code 200 (Success) under some other Linux versions. See the LAMP tutorial for Amazon Linux or your web server's documentation.
  • 404 Not found: The path might be incorrect.
  • 408 Request timeout, or no response: The port number might be incorrect, the service might not be running, the service might be inaccessible, or the timeout might be too low. Check that your firewall allows traffic from the uptime servers; see Getting IP addresses. The timeout limit is specified in the Healthcheck part of Advanced Options.

Create an alerting policy

If you want to be notified of uptime failures, create an alerting policy for your new uptime check. See Alerting on uptime checks for details.

Listing uptime checks

To list your current uptime checks, do the following:

Console

  1. To view a list of your uptime checks, in the Stackdriver Monitoring console, go to Uptime checks > Uptime checks overview. Your uptime checks might be listed on multiple pages.

    Go to Uptime Checks Overview

  2. To filter the list of checks, do one of the following:

    • Enter text in the Filter field to limit the list to checks with that text in their titles.
    • Use the button to the left of the Filter field to filter for members of a specific group.

    Click an uptime check to show more detail about the check.

API

To get a list of your uptime configurations, call the projects.uptimeCheckConfigs.list method. Specify the following parameters:

  • parent: The project whose uptime checks you want to list. The format is:

    projects/[PROJECT_ID]

To get a specific uptime check, call the projects.uptimeCheckConfigs.get method. Specify the following parameter:

  • name: The full name of the uptime check configuration.

    projects/[PROJECT_ID]/uptimeCheckConfigs/[UPTIME_CHECK_ID]

    You can get the [UPTIME_CHECK_ID] from the response of a create or list method. The ID isn't shown in the Stackdriver Monitoring console.

C#

public static object ListUptimeCheckConfigs(string projectId)
{
    var client = UptimeCheckServiceClient.Create();
    var configs = client.ListUptimeCheckConfigs(
        new ProjectName(projectId).ToString());
    foreach (UptimeCheckConfig config in configs)
    {
        Console.WriteLine(config.Name);
    }
    return 0;
}

Java

private static void listUptimeChecks(String projectId) throws IOException {
  ListUptimeCheckConfigsRequest request = ListUptimeCheckConfigsRequest
      .newBuilder()
      .setParent(ProjectName.format(projectId))
      .build();
  try (UptimeCheckServiceClient client = UptimeCheckServiceClient.create()) {
    ListUptimeCheckConfigsPagedResponse response = client.listUptimeCheckConfigs(request);
    for (UptimeCheckConfig config : response.iterateAll()) {
      System.out.println(config.getDisplayName());
    }
  } catch (Exception e) {
    usage("Exception listing uptime checks: " + e.toString());
    throw e;
  }
}

Go

// list is an example of listing the uptime checks in projectID.
func list(w io.Writer, projectID string) error {
	ctx := context.Background()
	client, err := monitoring.NewUptimeCheckClient(ctx)
	if err != nil {
		return fmt.Errorf("NewUptimeCheckClient: %v", err)
	}
	defer client.Close()
	req := &monitoringpb.ListUptimeCheckConfigsRequest{
		Parent: "projects/" + projectID,
	}
	it := client.ListUptimeCheckConfigs(ctx, req)
	for {
		config, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			return fmt.Errorf("ListUptimeCheckConfigs: %v", err)
		}
		fmt.Fprintln(w, config)
	}
	fmt.Fprintln(w, "Done listing uptime checks")
	return nil
}

Node.js

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates a client
const client = new monitoring.UptimeCheckServiceClient();

/**
 * TODO(developer): Uncomment and edit the following lines of code.
 */
// const projectId = 'YOUR_PROJECT_ID';

const request = {
  parent: client.projectPath(projectId),
};

// Retrieves an uptime check config
const [uptimeCheckConfigs] = await client.listUptimeCheckConfigs(request);

uptimeCheckConfigs.forEach(uptimeCheckConfig => {
  console.log(`ID: ${uptimeCheckConfig.name}`);
  console.log(`  Display Name: ${uptimeCheckConfig.displayName}`);
  console.log(`  Resource: %j`, uptimeCheckConfig.monitoredResource);
  console.log(`  Period: %j`, uptimeCheckConfig.period);
  console.log(`  Timeout: %j`, uptimeCheckConfig.timeout);
  console.log(`  Check type: ${uptimeCheckConfig.check_request_type}`);
  console.log(
    `  Check: %j`,
    uptimeCheckConfig.httpCheck || uptimeCheckConfig.tcpCheck
  );
  console.log(
    `  Content matchers: ${uptimeCheckConfig.contentMatchers
      .map(matcher => matcher.content)
      .join(', ')}`
  );
  console.log(`  Regions: ${uptimeCheckConfig.selectedRegions.join(', ')}`);
});

PHP

use Google\Cloud\Monitoring\V3\UptimeCheckServiceClient;

/**
 * Example:
 * ```
 * list_uptime_checks($projectId);
 * ```
 */
function list_uptime_checks($projectId)
{
    $uptimeCheckClient = new UptimeCheckServiceClient([
        'projectId' => $projectId,
    ]);

    $pages = $uptimeCheckClient->listUptimeCheckConfigs(
        $uptimeCheckClient->projectName($projectId)
    );

    foreach ($pages->iteratePages() as $page) {
        foreach ($page as $uptimeCheck) {
            print($uptimeCheck->getName() . PHP_EOL);
        }
    }
}

Python

def list_uptime_check_configs(project_name):
    client = monitoring_v3.UptimeCheckServiceClient()
    configs = client.list_uptime_check_configs(project_name)

    for config in configs:
        pprint.pprint(config)

Ruby

def list_uptime_check_configs(project_id)
  require "google/cloud/monitoring/v3"

  client = Google::Cloud::Monitoring::V3::UptimeCheck.new
  project_name = Google::Cloud::Monitoring::V3::UptimeCheckServiceClient.project_path(project_id)
  configs = client.list_uptime_check_configs(project_name)

  configs.each { |config| puts config.name }
end

You can also retrieve a single uptime check:

C#

public static object GetUptimeCheckConfig(string configName)
{
    var client = UptimeCheckServiceClient.Create();
    UptimeCheckConfig config = client.GetUptimeCheckConfig(configName);
    if (config == null)
    {
        Console.Error.WriteLine(
            "No configuration found with the name {0}", configName);
        return -1;
    }
    Console.WriteLine("Name: {0}", config.Name);
    Console.WriteLine("Display Name: {0}", config.DisplayName);
    Console.WriteLine("Http Path: {0}", config.HttpCheck.Path);
    return 0;
}

Java

private static void getUptimeCheckConfig(String projectId, String checkName) throws IOException {
  try (UptimeCheckServiceClient client = UptimeCheckServiceClient.create()) {
    String fullCheckName = UptimeCheckConfigName.format(projectId, checkName);
    UptimeCheckConfig config = client.getUptimeCheckConfig(fullCheckName);
    if (config != null) {
      System.out.println(config.toString());
    } else {
      System.out.println(
          "No uptime check config found with name " + checkName + " in project " + projectId);
    }
  } catch (Exception e) {
    usage("Exception getting uptime check: " + e.toString());
    throw e;
  }
}

Go

// get is an example of getting an uptime check. resourceName should be
// of the form `projects/[PROJECT_ID]/uptimeCheckConfigs/[UPTIME_CHECK_ID]`.
func get(w io.Writer, resourceName string) (*monitoringpb.UptimeCheckConfig, error) {
	ctx := context.Background()
	client, err := monitoring.NewUptimeCheckClient(ctx)
	if err != nil {
		return nil, fmt.Errorf("NewUptimeCheckClient: %v", err)
	}
	defer client.Close()
	req := &monitoringpb.GetUptimeCheckConfigRequest{
		Name: resourceName,
	}
	config, err := client.GetUptimeCheckConfig(ctx, req)
	if err != nil {
		return nil, fmt.Errorf("GetUptimeCheckConfig: %v", err)
	}
	fmt.Fprintf(w, "Config: %v", config)
	return config, nil
}

Node.js

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates a client
const client = new monitoring.UptimeCheckServiceClient();

/**
 * TODO(developer): Uncomment and edit the following lines of code.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const uptimeCheckConfigId = 'YOUR_UPTIME_CHECK_CONFIG_ID';

const request = {
  // i.e. name: 'projects/my-project-id/uptimeCheckConfigs/My-Uptime-Check
  name: client.uptimeCheckConfigPath(projectId, uptimeCheckConfigId),
};

console.log(`Retrieving ${request.name}`);

// Retrieves an uptime check config
const [uptimeCheckConfig] = await client.getUptimeCheckConfig(request);
console.log(`ID: ${uptimeCheckConfig.name}`);
console.log(`Display Name: ${uptimeCheckConfig.displayName}`);
console.log(`Resource: %j`, uptimeCheckConfig.monitoredResource);
console.log(`Period: %j`, uptimeCheckConfig.period);
console.log(`Timeout: %j`, uptimeCheckConfig.timeout);
console.log(`Check type: ${uptimeCheckConfig.check_request_type}`);
console.log(
  `Check: %j`,
  uptimeCheckConfig.httpCheck || uptimeCheckConfig.tcpCheck
);
console.log(
  `Content matchers: ${uptimeCheckConfig.contentMatchers
    .map(matcher => matcher.content)
    .join(', ')}`
);
console.log(`Regions: ${uptimeCheckConfig.selectedRegions.join(', ')}`);

PHP

use Google\Cloud\Monitoring\V3\UptimeCheckServiceClient;

/**
 * Example:
 * ```
 * get_uptime_check($projectId, $configName);
 * ```
 *
 * @param string $projectId Your project ID
 * @param string $configName
 */
function get_uptime_check($projectId, $configName)
{
    $uptimeCheckClient = new UptimeCheckServiceClient([
        'projectId' => $projectId,
    ]);

    $uptimeCheck = $uptimeCheckClient->getUptimeCheckConfig($configName);

    print('Retrieved an uptime check:' . PHP_EOL);
    print($uptimeCheck->serializeToJsonString() . PHP_EOL);
}

Python

def get_uptime_check_config(config_name):
    client = monitoring_v3.UptimeCheckServiceClient()
    config = client.get_uptime_check_config(config_name)
    pprint.pprint(config)

Ruby

def get_uptime_check_config(config_name)
  require "google/cloud/monitoring/v3"

  client = Google::Cloud::Monitoring::V3::UptimeCheck.new
  config = client.get_uptime_check_config(config_name)
  pp config.to_hash
  return config
end

Editing uptime checks

To edit an uptime check, do the following:

Console

  1. In the Stackdriver Monitoring console, go to Uptime checks > Uptime checks overview. Your uptime checks might be listed on multiple pages.

    Go to Uptime Checks Overview

  2. In the Uptime Checks Overview, to the right of your uptime check's summary, click Edit.

  3. Change the values of the fields as needed. You can't modify all fields. If the custom header values of a check are hidden, you cannot make them viewable.

  4. To verify if the check works, click Test. If the test fails, see Check failures for possible causes.

  5. Click Save.

API

Call the projects.uptimeCheckConfigs.patch method. Set the parameters to the method as follows:

  • uptimeCheckConfig.name: Required. This is part of the REST URL. It is the resource name of the uptime check to edit:

    projects/[PROJECT_ID]/uptimeCheckConfigs/[UPTIME_CHECK_ID]

    You can get the [UPTIME_CHECK_ID] from the response of a create or list method. The ID isn't shown in the Stackdriver Monitoring console.

  • updateMask: Optional. This is a query parameter: ?updateMask=[FIELD_LIST]. [FIELD_LIST] is a comma-separated list of fields in the UptimeCheckConfig object that should be changed. For example:

    "resource.type,httpCheck.path"

  • The request body must contain an UptimeCheckConfig with the new field values.

If updateMask is set, then only the fields listed in updateMask replace the corresponding fields in the existing configuration. If a field has subfields, and the field is listed in the field mask but none of its subfields are, then all subfields of that field replace the corresponding fields.

If updateMask isn't set, then the configuration in the request body replaces the entire existing configuration.

The patch method returns the UptimeCheckConfig object for the altered configuration.

C#

public static object UpdateUptimeCheck(string configName,
    string newHttpPath, string newDisplayName)
{
    var client = UptimeCheckServiceClient.Create();
    var config = client.GetUptimeCheckConfig(configName);
    var fieldMask = new FieldMask();
    if (newDisplayName != null)
    {
        config.DisplayName = newDisplayName;
        fieldMask.Paths.Add("display_name");
    }
    if (newHttpPath != null)
    {
        config.HttpCheck.Path = newHttpPath;
        fieldMask.Paths.Add("http_check.path");
    }
    client.UpdateUptimeCheckConfig(config);
    return 0;
}

Java

private static void updateUptimeCheck(
    String projectId, String displayName, String hostName, String pathName) throws IOException {
  String fullCheckName = UptimeCheckConfigName.format(projectId, displayName);

  UpdateUptimeCheckConfigRequest request = UpdateUptimeCheckConfigRequest
      .newBuilder()
      .setUpdateMask(FieldMask
          .newBuilder()
          .addPaths("http_check.path"))
      .setUptimeCheckConfig(UptimeCheckConfig
          .newBuilder()
          .setName(fullCheckName)
          .setMonitoredResource(MonitoredResource
              .newBuilder()
              .setType("uptime_url")
              .putLabels("host", hostName))
          .setHttpCheck(HttpCheck
              .newBuilder()
              .setPath(pathName)
              .setPort(80))
          .setTimeout(Duration.newBuilder().setSeconds(10))
          .setPeriod(Duration.newBuilder().setSeconds(300)))
      .build();
  try (UptimeCheckServiceClient client = UptimeCheckServiceClient.create()) {
    UptimeCheckConfig config = client.updateUptimeCheckConfig(request);
    System.out.println("Uptime check updated: \n" + config.toString());
  } catch (Exception e) {
    usage("Exception updating uptime check: " + e.toString());
    throw e;
  }
}

Go

// update is an example of updating an uptime check. resourceName should be
// of the form `projects/[PROJECT_ID]/uptimeCheckConfigs/[UPTIME_CHECK_ID]`.
func update(w io.Writer, resourceName, displayName, httpCheckPath string) (*monitoringpb.UptimeCheckConfig, error) {
	ctx := context.Background()
	client, err := monitoring.NewUptimeCheckClient(ctx)
	if err != nil {
		return nil, fmt.Errorf("NewUptimeCheckClient: %v", err)
	}
	defer client.Close()
	getReq := &monitoringpb.GetUptimeCheckConfigRequest{
		Name: resourceName,
	}
	config, err := client.GetUptimeCheckConfig(ctx, getReq)
	if err != nil {
		return nil, fmt.Errorf("GetUptimeCheckConfig: %v", err)
	}
	config.DisplayName = displayName
	config.GetHttpCheck().Path = httpCheckPath
	req := &monitoringpb.UpdateUptimeCheckConfigRequest{
		UpdateMask: &field_mask.FieldMask{
			Paths: []string{"display_name", "http_check.path"},
		},
		UptimeCheckConfig: config,
	}
	config, err = client.UpdateUptimeCheckConfig(ctx, req)
	if err != nil {
		return nil, fmt.Errorf("UpdateUptimeCheckConfig: %v", err)
	}
	fmt.Fprintf(w, "Successfully updated %v", resourceName)
	return config, nil
}

Node.js

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates a client
const client = new monitoring.UptimeCheckServiceClient();

/**
 * TODO(developer): Uncomment and edit the following lines of code.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const uptimeCheckConfigId = 'YOUR_UPTIME_CHECK_CONFIG_ID';
// const displayName = 'A New Display Name';
// const path = '/some/path';

const request = {
  // i.e. name: 'projects/my-project-id/uptimeCheckConfigs/My-Uptime-Check
  name: client.uptimeCheckConfigPath(projectId, uptimeCheckConfigId),
};

console.log(`Updating ${request.name} to ${displayName}`);

// Updates the display name and path on an uptime check config
request.uptimeCheckConfig = {
  name: request.name,
  displayName: displayName,
  httpCheck: {path: path},
};

request.updateMask = {paths: ['display_name', 'http_check.path']};

const [response] = await client.updateUptimeCheckConfig(request);
console.log(`${response.name} config updated.`);

PHP

use Google\Cloud\Monitoring\V3\UptimeCheckServiceClient;
use Google\Protobuf\FieldMask;

/**
 * Example:
 * ```
 * update_uptime_checks($projectId);
 * ```
 */
function update_uptime_checks($projectId, $configName, $newDisplayName = null, $newHttpCheckPath = null)
{
    $uptimeCheckClient = new UptimeCheckServiceClient([
        'projectId' => $projectId,
    ]);

    $uptimeCheck = $uptimeCheckClient->getUptimeCheckConfig($displayName);
    $fieldMask = new FieldMask();
    if ($newDisplayName) {
        $fieldMask->getPaths()[] = 'display_name';
        $uptimeCheck->setDisplayName($newDisplayName);
    }
    if ($newHttpCheckPath) {
        $fieldMask->getPaths()[] = 'http_check.path';
        $uptimeCheck->getHttpCheck()->setPath($newHttpCheckPath);
    }

    $uptimeCheckClient->updateUptimeCheckConfig($uptimeCheck, $fieldMask);

    print($uptimeCheck->serializeToString() . PHP_EOL);
}

Python

def update_uptime_check_config(config_name, new_display_name=None,
                               new_http_check_path=None):
    client = monitoring_v3.UptimeCheckServiceClient()
    config = client.get_uptime_check_config(config_name)
    field_mask = monitoring_v3.types.FieldMask()
    if new_display_name:
        field_mask.paths.append('display_name')
        config.display_name = new_display_name
    if new_http_check_path:
        field_mask.paths.append('http_check.path')
        config.http_check.path = new_http_check_path
    client.update_uptime_check_config(config, field_mask)

Ruby

def update_uptime_check_config config_name: nil, new_display_name: nil, new_http_check_path: nil
  require "google/cloud/monitoring/v3"

  client = Google::Cloud::Monitoring::V3::UptimeCheck.new
  config = { name: config_name }
  field_mask = { paths: []}
  if not new_display_name.to_s.empty? then
    field_mask[:paths].push('display_name')
    config[:display_name] = new_display_name
  end
  if not new_http_check_path.to_s.empty? then
    field_mask[:paths].push('http_check.path')
    config[:http_check] = {path: new_http_check_path }
  end
  client.update_uptime_check_config(config, update_mask:field_mask)
end

There can be a delay of up to 25 minutes before you see the new uptime check results. During that time, the results of the former uptime check are displayed in the dashboards and used in alerting policies.

Deleting uptime checks

Before deleting an uptime check, remove the check from any alerting policies that use it. If you don't remove the uptime check, you can't delete the uptime check through the Monitoring console. If you delete the uptime check through the API, the alerting policy ignores the missing uptime check. The policy doesn't create an incident for the missing check.

To delete an uptime check, do the following:

Console

  1. In the Stackdriver Monitoring console, go to Uptime checks > Uptime checks overview.

    Go to Uptime Checks Overview

  2. In the Uptime Checks Overview, to the right of your uptime check, click Delete.

API

Call the projects.uptimeCheckConfigs.delete method. Fill out the parameter as follows:

  • name: Required. This is the resource name of the uptime check configuration to delete:

    projects/[PROJECT_ID]/uptimeCheckConfigs/[UPTIME_CHECK_ID]

    You can get the [UPTIME_CHECK_ID] from the response of a create or list method. The ID isn't shown in the Stackdriver Monitoring console.

C#

public static object DeleteUptimeCheckConfig(string configName)
{
    var client = UptimeCheckServiceClient.Create();
    client.DeleteUptimeCheckConfig(configName);
    Console.WriteLine($"Deleted {configName}");
    return 0;
}

Java

private static void deleteUptimeCheckConfig(String projectId, String checkName)
    throws IOException {
  try (UptimeCheckServiceClient client = UptimeCheckServiceClient.create()) {
    client.deleteUptimeCheckConfig(UptimeCheckConfigName.format(projectId, checkName));
  } catch (Exception e) {
    usage("Exception deleting uptime check: " + e.toString());
    throw e;
  }
}

Go

// delete is an example of deleting an uptime check. resourceName should be
// of the form `projects/[PROJECT_ID]/uptimeCheckConfigs/[UPTIME_CHECK_ID]`.
func delete(w io.Writer, resourceName string) error {
	ctx := context.Background()
	client, err := monitoring.NewUptimeCheckClient(ctx)
	if err != nil {
		return fmt.Errorf("NewUptimeCheckClient: %v", err)
	}
	defer client.Close()
	req := &monitoringpb.DeleteUptimeCheckConfigRequest{
		Name: resourceName,
	}
	if err := client.DeleteUptimeCheckConfig(ctx, req); err != nil {
		return fmt.Errorf("DeleteUptimeCheckConfig: %v", err)
	}
	fmt.Fprintf(w, "Successfully deleted %q", resourceName)
	return nil
}

Node.js

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates a client
const client = new monitoring.UptimeCheckServiceClient();

/**
 * TODO(developer): Uncomment and edit the following lines of code.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const uptimeCheckConfigId = 'YOUR_UPTIME_CHECK_CONFIG_ID';

const request = {
  // i.e. name: 'projects/my-project-id/uptimeCheckConfigs/My-Uptime-Check
  name: client.uptimeCheckConfigPath(projectId, uptimeCheckConfigId),
};

console.log(`Deleting ${request.name}`);

// Delete an uptime check config
await client.deleteUptimeCheckConfig(request);
console.log(`${request.name} deleted.`);

PHP

use Google\Cloud\Monitoring\V3\UptimeCheckServiceClient;

/**
 * Example:
 * ```
 * delete_uptime_check($projectId, $configName);
 * ```
 *
 * @param string $projectId Your project ID
 * @param string $configName
 */
function delete_uptime_check($projectId, $configName)
{
    $uptimeCheckClient = new UptimeCheckServiceClient([
        'projectId' => $projectId,
    ]);

    $uptimeCheckClient->deleteUptimeCheckConfig($configName);

    printf('Deleted an uptime check: ' . $configName . PHP_EOL);
}

Python

def delete_uptime_check_config(config_name):
    client = monitoring_v3.UptimeCheckServiceClient()
    client.delete_uptime_check_config(config_name)
    print('Deleted ', config_name)

Ruby

def delete_uptime_check_config(config_name)
  require "google/cloud/monitoring/v3"

  client = Google::Cloud::Monitoring::V3::UptimeCheck.new
  client.delete_uptime_check_config(config_name)
  puts "Deleted #{config_name}"
end

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