Logs for the probe:
ts=2025-12-10T01:54:42.696118744Z caller=main.go:190 module=http_2xx target=prometheus.io level=info msg="Beginning probe" probe=http timeout_seconds=30
ts=2025-12-10T01:54:42.696277861Z caller=http.go:328 module=http_2xx target=prometheus.io level=info msg="Resolving target address" target=prometheus.io ip_protocol=ip4
ts=2025-12-10T01:54:42.699999775Z caller=http.go:328 module=http_2xx target=prometheus.io level=info msg="Resolved target address" target=prometheus.io ip=104.21.60.220
ts=2025-12-10T01:54:42.700084134Z caller=client.go:259 module=http_2xx target=prometheus.io level=info msg="Making HTTP request" url=http://104.21.60.220 host=prometheus.io
ts=2025-12-10T01:54:42.751489392Z caller=client.go:505 module=http_2xx target=prometheus.io level=info msg="Received redirect" location=https://prometheus.io/
ts=2025-12-10T01:54:42.751522535Z caller=client.go:505 module=http_2xx target=prometheus.io level=info msg="Not following redirect"
ts=2025-12-10T01:54:42.751540215Z caller=handler.go:119 module=http_2xx target=prometheus.io level=info msg="Received HTTP response" status_code=301
ts=2025-12-10T01:54:42.751557144Z caller=http.go:494 module=http_2xx target=prometheus.io level=error msg="Missing required header" header=Access-Control-Allow-Origin
ts=2025-12-10T01:54:42.751583627Z caller=handler.go:119 module=http_2xx target=prometheus.io level=info msg="Response timings for roundtrip" roundtrip=0 start=2025-12-10T04:54:42.700152515+03:00 dnsDone=2025-12-10T04:54:42.700152515+03:00 connectDone=2025-12-10T04:54:42.724499186+03:00 gotConn=2025-12-10T04:54:42.724547356+03:00 responseStart=2025-12-10T04:54:42.751310209+03:00 tlsStart=0001-01-01T00:00:00Z tlsDone=0001-01-01T00:00:00Z end=2025-12-10T04:54:42.751574535+03:00
ts=2025-12-10T01:54:42.751612185Z caller=main.go:190 module=http_2xx target=prometheus.io level=error msg="Probe failed" duration_seconds=0.055454728



Metrics that would have been returned:
# HELP probe_dns_lookup_time_seconds Returns the time taken for probe dns lookup in seconds
# TYPE probe_dns_lookup_time_seconds gauge
probe_dns_lookup_time_seconds 0.003736683
# HELP probe_duration_seconds Returns how long the probe took to complete in seconds
# TYPE probe_duration_seconds gauge
probe_duration_seconds 0.055454728
# HELP probe_failed_due_to_regex Indicates if probe failed due to regex
# TYPE probe_failed_due_to_regex gauge
probe_failed_due_to_regex 1
# HELP probe_http_content_length Length of http content response
# TYPE probe_http_content_length gauge
probe_http_content_length 0
# HELP probe_http_duration_seconds Duration of http request by phase, summed over all redirects
# TYPE probe_http_duration_seconds gauge
probe_http_duration_seconds{phase="connect"} 0.024394856
probe_http_duration_seconds{phase="processing"} 0.026762853
probe_http_duration_seconds{phase="resolve"} 0.003736683
probe_http_duration_seconds{phase="tls"} 0
probe_http_duration_seconds{phase="transfer"} 0.000264331
# HELP probe_http_redirects The number of redirects
# TYPE probe_http_redirects gauge
probe_http_redirects 1
# HELP probe_http_ssl Indicates if SSL was used for the final redirect
# TYPE probe_http_ssl gauge
probe_http_ssl 0
# HELP probe_http_status_code Response HTTP status code
# TYPE probe_http_status_code gauge
probe_http_status_code 301
# HELP probe_http_uncompressed_body_length Length of uncompressed response body
# TYPE probe_http_uncompressed_body_length gauge
probe_http_uncompressed_body_length 0
# HELP probe_http_version Returns the version of HTTP of the probe response
# TYPE probe_http_version gauge
probe_http_version 1.1
# HELP probe_ip_addr_hash Specifies the hash of IP address. It's useful to detect if the IP address changes.
# TYPE probe_ip_addr_hash gauge
probe_ip_addr_hash 2.590428662e+09
# HELP probe_ip_protocol Specifies whether probe ip protocol is IP4 or IP6
# TYPE probe_ip_protocol gauge
probe_ip_protocol 4
# HELP probe_success Displays whether or not the probe was a success
# TYPE probe_success gauge
probe_success 0



Module configuration:
prober: http
timeout: 30s
http:
  valid_status_codes:
  - 200
  - 302
  - 301
  - 304
  - 401
  - 403
  valid_http_versions:
  - HTTP/1.1
  - HTTP/2.0
  preferred_ip_protocol: ip4
  method: GET
  fail_if_body_matches_regexp:
  - Could not connect to database
  fail_if_body_not_matches_regexp:
  - Download the latest version here
  fail_if_header_matches:
  - header: Set-Cookie
    regexp: .*
    allow_missing: true
  fail_if_header_not_matches:
  - header: Access-Control-Allow-Origin
    regexp: (\*|example\.com)
  tls_config:
    insecure_skip_verify: true
  follow_redirects: false
  enable_http2: true
tcp:
  ip_protocol_fallback: true
icmp:
  ip_protocol_fallback: true
  ttl: 64
dns:
  ip_protocol_fallback: true
  recursion_desired: true