Logs for the probe:
time=2026-11-01T20:12:39.253+01:00 level=ERROR source=http.go:673 msg="Failed to read HTTP response body" module=http_4xx target=https://nest.services.alin.be err="context deadline exceeded"
time=2026-11-01T20:12:39.257+01:00 level=ERROR source=handler.go:130 msg="Probe failed" module=http_4xx target=https://nest.services.alin.be duration_seconds=5.006322308



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 0.001103773
# HELP probe_duration_seconds Returns how long the probe took to complete in seconds
# TYPE probe_duration_seconds gauge
probe_duration_seconds 5.006322308
# 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 0
# HELP probe_http_content_length Length of http content response
# TYPE probe_http_content_length gauge
probe_http_content_length 17
# 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"} 0.000105887
probe_http_duration_seconds{phase="processing"} 2.594096784
probe_http_duration_seconds{phase="resolve"} 0.001103773
probe_http_duration_seconds{phase="tls"} 2.406452911
probe_http_duration_seconds{phase="transfer"} 0.004222372
# HELP probe_http_redirects The number of redirects
# TYPE probe_http_redirects gauge
probe_http_redirects 0
# HELP probe_http_ssl Indicates if SSL was used for the final redirect
# TYPE probe_http_ssl gauge
probe_http_ssl 1
# HELP probe_http_status_code Response HTTP status code
# TYPE probe_http_status_code gauge
probe_http_status_code 401
# 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 2
# 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 1.308801632e+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_ssl_earliest_cert_expiry Returns last SSL chain expiry in unixtime
# TYPE probe_ssl_earliest_cert_expiry gauge
probe_ssl_earliest_cert_expiry 1.799088032e+09
# HELP probe_ssl_last_chain_expiry_timestamp_seconds Returns last SSL chain expiry in timestamp
# TYPE probe_ssl_last_chain_expiry_timestamp_seconds gauge
probe_ssl_last_chain_expiry_timestamp_seconds 1.799088032e+09
# HELP probe_ssl_last_chain_info Contains SSL leaf certificate information
# TYPE probe_ssl_last_chain_info gauge
probe_ssl_last_chain_info{fingerprint_sha256="15851c904bb5267f736b9a40ca6e9c1da8ecc3a4608fde043eaf3ca543f1dcd5",issuer="CN=YR1,O=Let's Encrypt,C=US",serialnumber="0613aacb49c54dfb20374265f937f7ad0807",subject="CN=nest.services.alin.be",subjectalternative="nest.services.alin.be"} 1
# HELP probe_success Displays whether or not the probe was a success
# TYPE probe_success gauge
probe_success 0
# HELP probe_tls_cipher_info Returns the TLS cipher negotiated during handshake
# TYPE probe_tls_cipher_info gauge
probe_tls_cipher_info{cipher="TLS_AES_128_GCM_SHA256"} 1
# HELP probe_tls_version_info Returns the TLS version used or NaN when unknown
# TYPE probe_tls_version_info gauge
probe_tls_version_info{version="TLS 1.3"} 1



Module configuration:
prober: http
timeout: 5s
http:
  valid_status_codes:
  - 401
  - 403
  valid_http_versions:
  - HTTP/1.1
  - HTTP/2.0
  preferred_ip_protocol: ip4
  ip_protocol_fallback: true
  method: GET
  follow_redirects: true
  enable_http2: true
tcp:
  ip_protocol_fallback: true
icmp:
  ip_protocol_fallback: true
  ttl: 64
dns:
  ip_protocol_fallback: true
  recursion_desired: true