Splunk log files11/16/2023 There are a few instances where this might be helpful: Promtail can also be configured to receive logs from another Promtail or any Loki client by exposing the Loki Push API with the loki_push_api scrape config. If you would like to see support for a compression protocol that isn’t listed here, pleaseĬreate a new issue on Github asking for it and explaining your use case.To avoid it, pick a initial_delay that is enough to avoid it. If you compress a file under a folder being scraped, Promtail might try to ingest your file before you finish compressing it.Issue on Github asking for it and explaining your use case. If you’d like to see support for it, please create a new Rely on file inodes instead of file names. Log rotations aren’t supported as of now, mostly because it requires us modifying Promtail to.Might configure Promtail’s limits stage to slow the pace or increase Of your compressed file Loki will rate-limit your ingestion. Since decompression and pushing can be very fast, depending on the size.To resume work from the last scraped line and process the rest of the remaining 55%. Parsing and pushing (for example) 45% of your compressed file data, you can expect Promtail That means that, if you interrupt Promtail after Of garbage collection runs and the CPU usage to skyrocket, but no memory leak is To occur, especially depending on the size of the file. The decompression is quite CPU intensive and a lot of allocations are expected.We have plans to add support for it in the near future. zip extension isn’t supported as of now because it doesn’t support some of the interfaces clients/pkg/promtail/targets/file/decompresser_test.go. However, because tar will add its metadata at the beggining of theĬompressed file, the first parsed line will contains metadata together with tar.gz: Data will be decompressed exactly as the. bz2: Data will be decompressed with the native Bzip2 Golang pkg ( pkg/compress/bzip2) z: Data will be decompressed with the native Zlib Golang pkg ( pkg/compress/zlib) gz: Data will be decompressed with the native Gunzip Golang pkg ( pkg/compress/gzip) It fetches the following 4096 bytes, and so on. After processing this block and pushing the data to Loki, i.e: it first fetches a block of 4096 bytesįrom the compressed file and process it. The data is decompressed in blocks of 4096 bytes.The max expected log line is 2MB bytes within the compressed file.It relies on the \n character to separate the data into different log lines.The Promtail configuration below examplifies how to to set up decompression: server:įilename: /var/lib/promtail/positions.yaml Lazily decompress the compressed file and push the parsed data to Loki. If a discovered target has decompression configured, Promtail will Promtail now has native support for ingesting compressed files. Refer to the docs forĬonfiguring Promtail for more details. Relabel_configs allows for fine-grained control of what to ingest, what toĭrop, and the final metadata to attach to the log line. Just like Prometheus, promtail is configured using a scrape_configs stanza. Kubernetes API server while static usually covers all other use cases. kubernetes service discovery fetches required labels from the This limitation is due to the fact that Promtail is deployed as aĭaemon to every local machine and, as such, does not discover label from other Service discovery mechanism from Prometheus,Īlthough it currently only supports static and kubernetes serviceĭiscovery. Specifically, this means discoveringĪpplications emitting log lines to files that need to be monitored. Log file discoveryīefore Promtail can ship any data from log files to Loki, it needs to find out Systemd journal (on AMD64 machines only). Promtail is an agent which ships the contents of local logs to a private Grafana Lokiĭeployed to every machine that has applications needed to be monitored.Ĭurrently, Promtail can tail logs from two sources: local log files and the
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