Logs for the probe: time=2025-12-08T13:19:40.530Z level=INFO source=handler.go:122 msg="Beginning probe" module=http_2xx target=https://devapi.cercu.co/ probe=http timeout_seconds=5 time=2025-12-08T13:19:40.530Z level=INFO source=utils.go:61 msg="Resolving target address" module=http_2xx target=https://devapi.cercu.co/ target=devapi.cercu.co ip_protocol=ip4 time=2025-12-08T13:19:40.548Z level=INFO source=utils.go:96 msg="Resolved target address" module=http_2xx target=https://devapi.cercu.co/ target=devapi.cercu.co ip=159.89.245.215 time=2025-12-08T13:19:40.549Z level=INFO source=http.go:153 msg="Making HTTP request" module=http_2xx target=https://devapi.cercu.co/ url=https://159.89.245.215/ host=devapi.cercu.co time=2025-12-08T13:19:40.564Z level=INFO source=http.go:479 msg="Received HTTP response" module=http_2xx target=https://devapi.cercu.co/ status_code=503 time=2025-12-08T13:19:40.564Z level=INFO source=http.go:494 msg="Invalid HTTP response status code, wanted 2xx" module=http_2xx target=https://devapi.cercu.co/ status_code=503 time=2025-12-08T13:19:40.565Z level=INFO source=http.go:601 msg="Response timings for roundtrip" module=http_2xx target=https://devapi.cercu.co/ roundtrip=0 start=2025-12-08T13:19:40.549Z dnsDone=2025-12-08T13:19:40.549Z connectDone=2025-12-08T13:19:40.555Z gotConn=2025-12-08T13:19:40.563Z responseStart=2025-12-08T13:19:40.564Z tlsStart=2025-12-08T13:19:40.556Z tlsDone=2025-12-08T13:19:40.563Z end=2025-12-08T13:19:40.565Z time=2025-12-08T13:19:40.565Z level=ERROR source=handler.go:135 msg="Probe failed" module=http_2xx target=https://devapi.cercu.co/ duration_seconds=0.03454339 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 0.017939339 # HELP probe_duration_seconds Returns how long the probe took to complete in seconds # TYPE probe_duration_seconds gauge probe_duration_seconds 0.03454339 # 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 190 # 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"} 0.006402741 probe_http_duration_seconds{phase="processing"} 0.000728986 probe_http_duration_seconds{phase="resolve"} 0.017939339 probe_http_duration_seconds{phase="tls"} 0.007890011 probe_http_duration_seconds{phase="transfer"} 0.00045509 # 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 503 # HELP probe_http_uncompressed_body_length Length of uncompressed response body # TYPE probe_http_uncompressed_body_length gauge probe_http_uncompressed_body_length 190 # 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 8.07450133e+08 # 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 1.768393119e+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 1.768393119e+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="843dc745e905ddbfd03210410b8d3a4d25c66c9c943176136d1920ce04a04712",issuer="CN=R13,O=Let's Encrypt,C=US",serialnumber="0507ee981e73c1762e29ff1feaa4cebbd1c5",subject="CN=devapi.cercu.co",subjectalternative="devapi.cercu.co,devsol.cercu.co"} 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_256_GCM_SHA384"} 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_http_versions: - HTTP/1.1 - HTTP/2.0 preferred_ip_protocol: ip4 ip_protocol_fallback: true 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