Logs for the probe: ts=2026-09-09T20:48:23.291357648Z caller=main.go:190 module=http_4xx target=loki.monlab.newt.cz level=info msg="Beginning probe" probe=http timeout_seconds=9.5 ts=2026-09-09T20:48:23.291441854Z caller=http.go:328 module=http_4xx target=loki.monlab.newt.cz level=info msg="Resolving target address" target=loki.monlab.newt.cz ip_protocol=ip4 ts=2026-09-09T20:48:23.293527253Z caller=http.go:328 module=http_4xx target=loki.monlab.newt.cz level=info msg="Resolved target address" target=loki.monlab.newt.cz ip=46.62.193.155 ts=2026-09-09T20:48:23.293616688Z caller=client.go:259 module=http_4xx target=loki.monlab.newt.cz level=info msg="Making HTTP request" url=http://46.62.193.155 host=loki.monlab.newt.cz ts=2026-09-09T20:48:23.294333204Z caller=client.go:505 module=http_4xx target=loki.monlab.newt.cz level=info msg="Received redirect" location=https://loki.monlab.newt.cz ts=2026-09-09T20:48:23.29442379Z caller=client.go:259 module=http_4xx target=loki.monlab.newt.cz level=info msg="Making HTTP request" url=https://loki.monlab.newt.cz host= ts=2026-09-09T20:48:23.294441276Z caller=client.go:259 module=http_4xx target=loki.monlab.newt.cz level=info msg="Address does not match first address, not sending TLS ServerName" first=46.62.193.155 address=loki.monlab.newt.cz ts=2026-09-09T20:48:23.303838396Z caller=handler.go:119 module=http_4xx target=loki.monlab.newt.cz level=info msg="Received HTTP response" status_code=404 ts=2026-09-09T20:48:23.303890214Z caller=handler.go:119 module=http_4xx target=loki.monlab.newt.cz level=info msg="Invalid HTTP response status code" status_code=404 valid_status_codes="[200 201 202 300 401]" ts=2026-09-09T20:48:23.303929143Z caller=handler.go:119 module=http_4xx target=loki.monlab.newt.cz level=info msg="Response timings for roundtrip" roundtrip=0 start=2026-09-09T20:48:23.293699962Z dnsDone=2026-09-09T20:48:23.293699962Z connectDone=2026-09-09T20:48:23.293974706Z gotConn=2026-09-09T20:48:23.294009648Z responseStart=2026-09-09T20:48:23.294307285Z tlsStart=0001-01-01T00:00:00Z tlsDone=0001-01-01T00:00:00Z end=0001-01-01T00:00:00Z ts=2026-09-09T20:48:23.303952217Z caller=handler.go:119 module=http_4xx target=loki.monlab.newt.cz level=info msg="Response timings for roundtrip" roundtrip=1 start=2026-09-09T20:48:23.29450409Z dnsDone=2026-09-09T20:48:23.296293515Z connectDone=2026-09-09T20:48:23.296427506Z gotConn=2026-09-09T20:48:23.30276122Z responseStart=2026-09-09T20:48:23.303756413Z tlsStart=2026-09-09T20:48:23.296455748Z tlsDone=2026-09-09T20:48:23.302690734Z end=2026-09-09T20:48:23.303919298Z ts=2026-09-09T20:48:23.304032628Z caller=main.go:190 module=http_4xx target=loki.monlab.newt.cz level=error msg="Probe failed" duration_seconds=0.012647268 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 0.002110557 # HELP probe_duration_seconds Returns how long the probe took to complete in seconds # TYPE probe_duration_seconds gauge probe_duration_seconds 0.012647268 # 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 19 # 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"} 0.000443716 probe_http_duration_seconds{phase="processing"} 0.00129279 probe_http_duration_seconds{phase="resolve"} 0.003899942 probe_http_duration_seconds{phase="tls"} 0.006234986 probe_http_duration_seconds{phase="transfer"} 0.000162885 # 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 1 # HELP probe_http_status_code Response HTTP status code # TYPE probe_http_status_code gauge probe_http_status_code 404 # HELP probe_http_uncompressed_body_length Length of uncompressed response body # TYPE probe_http_uncompressed_body_length gauge probe_http_uncompressed_body_length 19 # 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 2.863004189e+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 1.796752014e+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 1.796752014e+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="8d2f9406ae62df94ccacc09089ff8d43ef21c2f82d9abfd92c8d1fda64a3b173",issuer="CN=YR2,O=Let's Encrypt,C=US",subject="CN=loki.monlab.newt.cz",subjectalternative="loki.monlab.newt.cz"} 1 # HELP probe_success Displays whether or not the probe was a success # TYPE probe_success gauge probe_success 0 # 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 http: valid_status_codes: - 200 - 201 - 202 - 300 - 401 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