Like PromQL, LogQL supports a subset of built-in aggregation operators that can be used to aggregate the element of a single vector, resulting in a new vector of fewer elements but with aggregated values: The aggregation operators can either be used to aggregate over all label values or a set of distinct label values by including a without or a by clause: parameter is required when using topk and bottomk. Any other queries to help debug would be appreciated! not all queries will have line and label filters. Grafana Labs uses cookies for the normal operation of this website. If the conversion of the label value fails, the log line is not filtered and an __error__ label is added. Return the largest of a series of floats: Signature: maxf(a interface{}, i interface{}) float64. If the regular expression doesnt match, Instead of hard-coding details such as server, application, and sensor names in metric queries, you can use variables. Example of a query to print a - if the http_request_headers_x_forwarded_for label is empty: Counts occurrences of the regex (regex) in (src). For internal links, you can select the target data source from a selector. Decodes a JSON document into a structure. It takes a single string parameter | line_format "{{.label_name}}", which is the template format. The = operator after the tag name is a tag matching operator, and there are several tag matching operators supported in LogQL. Why? In this article, we will install Grafana, Loki and collect logs from . 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. The regular expression must contain at least one named submatch (e.g. You can wrap predicates in parentheses to force a different priority from left to right. For example, to calculate the top 5 qps for nginx and group them by pod. Query frontend caches and reuses them later if applicable. Signature: trimPrefix(prefix string, src string) string. Log range aggregations Install Grafana Loki with Docker or Docker Compose, 0003: Query fairness across users within tenants. The pattern parser is easier and faster to write; it also outperforms the regexp parser. This means that the . They can be referenced using they label name prefixed by a .
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