Agree. counter metric with applying regression filter to httpRequest.requestUrl should be able to get the count value. refer to: https://cloud.google.com/logging/docs/log4j2-vulnerability#log4j-search
B is the correct answer
"Create a filter that collects only the log entries that you want to count in your metric using the logging query language. You can also use regular expressions to create your metric's filters."
https://cloud.google.com/logging/docs/logs-based-metrics/counter-metrics#console
The correct answer is:
A. Add a Stackdriver counter metric for path:/api/alpha/
Explanation:
A. Add a Stackdriver counter metric for path:/api/alpha/:
This option is effective because Stackdriver (now known as Google Cloud Monitoring) supports creating custom metrics that can count log entries matching specific patterns in log fields, such as path:/api/alpha/.
By adding a counter metric for the path field, you can automatically track the count of all requests to /api/alpha/* without needing to export and process the logs externally.
Why Not the Other Options?
B. Add a Stackdriver counter metric for endpoint:/api/alpha/:
This answer is ambiguous and less likely to work, as "endpoint" is not a standard log field in Stackdriver. Instead, path or httpRequest.requestUrl would be the correct field to use.
The best approach here is A. Add a Stackdriver counter metric for path:/api/alpha/.
Here's why:
Stackdriver Metrics: Stackdriver metrics are specifically designed for tracking and aggregating data points over time. They are ideal for counting events like requests.
Path-Based Filtering: You can define Stackdriver metrics with specific filters based on the request path. In this case, path:/api/alpha/ will capture all requests matching that pattern.
Efficient Aggregation: Stackdriver automatically aggregates the metric data, providing you with the total count of requests to the /api/alpha/* endpoints.
Why other options are less suitable:
**B. Endpoint:/api/alpha/*: ** While this might seem like a good option, Stackdriver doesn't typically use the term "endpoint" for filtering. It primarily uses "path" for request path-based filtering.
C. Export logs to Cloud Storage and count lines: This is a less efficient and more complex approach. You'd need to write custom code to parse the logs and count the matching lines, which adds overhead and potential for errors.
D. Export logs to Cloud Pub/Sub and count lines: Similar to option C, this involves exporting logs and then processing them externally, which is less efficient than using Stackdriver metrics.
In summary: Adding a Stackdriver counter metric with the path:/api/alpha/ filter is the most efficient and straightforward way to get the count of all requests on all /api/alpha/* endpoints.
A. Add a Stackdriver counter metric for path:/api/alpha/.
In Google Cloud's operations suite (formerly Stackdriver), you can create custom metrics to count specific events within your logs. You would set up a counter metric to capture and count log entries where the request path matches your specified pattern, such as /api/alpha/*. This would allow you to query and visualize the count of requests to these endpoints directly within Stackdriver Monitoring without the need to export the logs elsewhere.
B. This option seems to be suggesting the correct action (creating a counter metric), but the syntax endpoint:/api/alpha/* is not correct for Stackdriver Monitoring. Custom metrics in Stackdriver are based on log data and the filter that matches the log entries, so you would specify the filter as part of creating the metric.
Option B is the correct choice because it involves creating a counter metric in Stackdriver specifically for requests to the /api/alpha/* endpoints. This will allow you to track the number of requests to these endpoints and view the data in Stackdriver.
Option C is incorrect because it involves exporting the logs to Cloud Storage and manually counting the lines that match /api/alpha. This is a more time-consuming and error-prone approach compared to using a counter metric in Stackdriver.
Option A is incorrect because the path:/api/alpha/ metric will track requests to any path that starts with /api/alpha/, not just requests to /api/alpha/* endpoints.
Option D is also incorrect for similar reasons. Exporting the logs to Cloud Pub/Sub and counting the lines that match /api/alpha is more time-consuming and error-prone compared to using a counter metric in Stackdriver.
ans: a
https://cloud.google.com/logging/docs/view/basic-queries#searching_specific_fields
https://cloud.google.com/monitoring/charts/metrics-selector#filter-option
To match any US zone that ends with “a”, you could use the the regular expression ^us.*.a$.
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