Prometheus

CrowdSec can expose a prometheus endpoint for collection (on http://127.0.0.1:6060/metrics by default). You can edit the listen_addr in config.yaml to allow an external Prometheus to scrape the metrics.

The goal of this endpoint, besides the usual resources consumption monitoring, aims at offering a view of CrowdSec "applicative" behavior :

• is it processing a lot of logs ? is it parsing them successfully ?
• are a lot of scenarios being triggered ?
• are a lot of IPs banned ?
• etc.

All the counters are "since CrowdSec start".

Metrics levels

The prometheus configuration accepts a level parameter that controls the verbosity of exposed metrics. The possible values are:

• none : no metrics are registered
• aggregated : only aggregated metrics are registered (per-machine and per-bouncer LAPI metrics, per-node parser metrics, decision/alert gauges, and LAPI response time are not available)
• full (default) : all metrics are registered

Acquisition metrics are registered per datasource — they only appear when the corresponding datasource is configured.

Metrics details

Scenarios

• cs_buckets : number of buckets that currently exist (Gauge, labels: name)
• cs_bucket_instantiation_total : total number of instantiation of each scenario (Counter, labels: name)
• cs_bucket_overflowed_total : total number of overflow of each scenario (Counter, labels: name)
• cs_bucket_underflowed_total : total number of underflow of each scenario — bucket was created but expired because of lack of events (Counter, labels: name)
• cs_bucket_canceled_total : total number of canceled buckets (Counter, labels: name)
• cs_bucket_poured_total : total number of events poured to each scenario (Counter, labels: source, type, name)

example

#2030 lines from `/var/log/nginx/access.log` were poured to `crowdsecurity/http-scan-uniques_404` scenario
cs_bucket_poured_total{name="crowdsecurity/http-scan-uniques_404",source="/var/log/nginx/access.log",type="nginx"} 2030

Parsers

• cs_node_hits_total : how many times an event from a specific source was processed by a parser node (Counter, labels: source, type, name, stage, acquis_type)

example

# 235 lines from `auth.log` were processed by the `crowdsecurity/dateparse-enrich` parser
cs_node_hits_total{name="crowdsecurity/dateparse-enrich",source="/var/log/auth.log",type="syslog",stage="s01-parse",acquis_type="file"} 235

• cs_node_hits_ko_total : how many times an event from a specific source was unsuccessfully parsed by a specific parser (Counter, labels: source, type, name, stage, acquis_type)

example

# 2112 lines from `error.log` failed to be parsed by `crowdsecurity/http-logs`
cs_node_hits_ko_total{name="crowdsecurity/http-logs",source="/var/log/nginx/error.log",type="nginx",stage="s01-parse",acquis_type="file"} 2112

• cs_node_hits_ok_total : how many times an event from a specific source was successfully parsed by a specific parser (Counter, labels: source, type, name, stage, acquis_type)

• cs_node_wl_hits_total : how many times an event was processed by a whitelist node (Counter, labels: source, type, name, reason, stage, acquis_type)

• cs_node_wl_hits_ok_total : how many times an event was successfully whitelisted by a node (Counter, labels: source, type, name, reason, stage, acquis_type)

• cs_parser_hits_total : how many times an event from a source has hit the parser (Counter, labels: source, type)

• cs_parser_hits_ok_total : how many times an event from a source was successfully parsed (Counter, labels: source, type, acquis_type)

• cs_parser_hits_ko_total : how many times an event from a source was unsuccessfully parsed (Counter, labels: source, type, acquis_type)

Processing

• cs_parsing_time_seconds : time spent parsing a line (Histogram, labels: type, source)
• cs_bucket_pour_seconds : time spent pouring an event to buckets (Histogram, labels: type, source)

Decisions & Alerts

• cs_active_decisions : number of active decisions (Gauge, labels: reason, origin, action)
• cs_alerts : number of alerts, excluding CAPI (Gauge, labels: reason)

Application Security Engine

• cs_appsec_reqs_total : total events processed by the Application Security Engine (Counter, labels: source, appsec_engine)
• cs_appsec_block_total : total events blocked by the Application Security Engine (Counter, labels: source, appsec_engine)
• cs_appsec_rule_hits : count of triggered rules (Counter, labels: rule_name, type, appsec_engine, source)
• cs_appsec_parsing_time_seconds : time spent processing a request by the Application Security Engine (Histogram, labels: source, appsec_engine)
• cs_appsec_inband_parsing_time_seconds : time spent processing a request by the inband Application Security Engine (Histogram, labels: source, appsec_engine)
• cs_appsec_outband_parsing_time_seconds : time spent processing a request by the outband Application Security Engine (Histogram, labels: source, appsec_engine)

Acquisition

Acquisition metrics are split by datasource. They only appear when the corresponding datasource is configured. The following metrics are available :

Cloudwatch

• cs_cloudwatch_openstreams_total : number of opened streams within group (Gauge, labels: group)
• cs_cloudwatch_stream_hits_total : number of events read from stream (Counter, labels: group, stream)

Docker

• cs_dockersource_hits_total : total lines that were read (Counter, labels: source)

Files

• cs_filesource_hits_total : total lines that were read (Counter, labels: source)

HTTP

• cs_httpsource_hits_total : total lines that were read from HTTP source (Counter, labels: path, src)

Journald

• cs_journalctlsource_hits_total : total lines that were read (Counter, labels: source)

Kafka

• cs_kafkasource_hits_total : total lines that were read from topic (Counter, labels: topic)

Kinesis

• cs_kinesis_stream_hits_total : number of events read per stream (Counter, labels: stream)
• cs_kinesis_shards_hits_total : number of events read per shard (Counter, labels: stream, shard)

Kubernetes Audit

• cs_k8sauditsource_hits_total : total number of events received by k8s-audit source (Counter, labels: source)
• cs_k8sauditsource_requests_total : total number of requests received (Counter, labels: source)

Loki

• cs_lokisource_hits_total : total lines that were read (Counter, labels: source)

S3

• cs_s3_hits_total : number of events read per bucket (Counter, labels: bucket)
• cs_s3_objects_total : number of objects read per bucket (Counter, labels: bucket)
• cs_s3_sqs_messages_total : number of SQS messages received per queue (Counter, labels: queue)

Syslog

• cs_syslogsource_hits_total : total lines that were received (Counter, labels: source)
• cs_syslogsource_parsed_total : total lines that were successfully parsed by the syslog server (Counter, labels: source, type)

VictoriaLogs

• cs_victorialogssource_hits_total : total lines that were read (Counter, labels: source)

Windows EventLog

• cs_winevtlogsource_hits_total : total events that were read (Counter, labels: source)

Local API

• cs_lapi_route_requests_total : number of calls to each route per method (Counter, labels: route, method)
• cs_lapi_machine_requests_total : number of calls to each route per method grouped by machines (Counter, labels: machine, route, method)
• cs_lapi_bouncer_requests_total : number of calls to each route per method grouped by bouncers (Counter, labels: bouncer, route, method)
• cs_lapi_decisions_ko_total : number of calls to /decisions that returned nil result (Counter, labels: bouncer)
• cs_lapi_decisions_ok_total : number of calls to /decisions that returned non-nil result (Counter, labels: bouncer)
• cs_lapi_request_duration_seconds : response time of LAPI (Histogram, labels: endpoint, method)

Cache

• cs_cache_size : entries per cache (Gauge, labels: name, type)
• cs_regexp_cache_size : entries per regexp cache (Gauge, labels: name)

Info

• cs_info : Information about CrowdSec (software version)

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More ways to learn

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Exploitation with prometheus server & grafana

Those metrics can be scraped by prometheus server and visualized with grafana. They can be downloaded here :