Logs for the probe: time=2026-02-28T09:35:49.259Z level=INFO source=handler.go:122 msg="Beginning probe" module=http_cppalliance_org_slack target=https://slack.cpp.al probe=http timeout_seconds=9.5 time=2026-02-28T09:35:49.259Z level=INFO source=utils.go:61 msg="Resolving target address" module=http_cppalliance_org_slack target=https://slack.cpp.al target=slack.cpp.al ip_protocol=ip4 time=2026-02-28T09:35:49.262Z level=INFO source=utils.go:96 msg="Resolved target address" module=http_cppalliance_org_slack target=https://slack.cpp.al target=slack.cpp.al ip=50.17.180.88 time=2026-02-28T09:35:49.262Z level=INFO source=http.go:153 msg="Making HTTP request" module=http_cppalliance_org_slack target=https://slack.cpp.al url=https://50.17.180.88 host=slack.cpp.al time=2026-02-28T09:35:49.344Z level=INFO source=http.go:381 msg="Received redirect" module=http_cppalliance_org_slack target=https://slack.cpp.al location=https://cppalliance.org/slack/ time=2026-02-28T09:35:49.344Z level=INFO source=http.go:153 msg="Making HTTP request" module=http_cppalliance_org_slack target=https://slack.cpp.al url=https://cppalliance.org/slack/ host="" time=2026-02-28T09:35:49.344Z level=INFO source=http.go:169 msg="Address does not match first address, not sending TLS ServerName" module=http_cppalliance_org_slack target=https://slack.cpp.al first=50.17.180.88 address=cppalliance.org time=2026-02-28T09:35:58.013Z level=INFO source=http.go:479 msg="Received HTTP response" module=http_cppalliance_org_slack target=https://slack.cpp.al status_code=503 time=2026-02-28T09:35:58.013Z level=INFO source=http.go:494 msg="Invalid HTTP response status code, wanted 2xx" module=http_cppalliance_org_slack target=https://slack.cpp.al status_code=503 time=2026-02-28T09:35:58.014Z level=INFO source=http.go:601 msg="Response timings for roundtrip" module=http_cppalliance_org_slack target=https://slack.cpp.al roundtrip=0 start=2026-02-28T09:35:49.263Z dnsDone=2026-02-28T09:35:49.263Z connectDone=2026-02-28T09:35:49.289Z gotConn=2026-02-28T09:35:49.318Z responseStart=2026-02-28T09:35:49.344Z tlsStart=2026-02-28T09:35:49.289Z tlsDone=2026-02-28T09:35:49.318Z end=0001-01-01T00:00:00.000Z time=2026-02-28T09:35:58.014Z level=INFO source=http.go:601 msg="Response timings for roundtrip" module=http_cppalliance_org_slack target=https://slack.cpp.al roundtrip=1 start=2026-02-28T09:35:49.344Z dnsDone=2026-02-28T09:35:49.345Z connectDone=2026-02-28T09:35:49.365Z gotConn=2026-02-28T09:35:57.837Z responseStart=2026-02-28T09:35:58.013Z tlsStart=2026-02-28T09:35:49.365Z tlsDone=2026-02-28T09:35:57.837Z end=2026-02-28T09:35:58.014Z time=2026-02-28T09:35:58.014Z level=ERROR source=handler.go:135 msg="Probe failed" module=http_cppalliance_org_slack target=https://slack.cpp.al duration_seconds=8.754949841 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 0.003264218 # HELP probe_duration_seconds Returns how long the probe took to complete in seconds # TYPE probe_duration_seconds gauge probe_duration_seconds 8.754949841 # 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 15 # 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"} 0.046328836 probe_http_duration_seconds{phase="processing"} 0.20189866299999998 probe_http_duration_seconds{phase="resolve"} 0.004164216 probe_http_duration_seconds{phase="tls"} 8.500498058 probe_http_duration_seconds{phase="transfer"} 0.000520058 # 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 503 # HELP probe_http_uncompressed_body_length Length of uncompressed response body # TYPE probe_http_uncompressed_body_length gauge probe_http_uncompressed_body_length 15 # 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 2.518197584e+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 1.778228706e+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 1.778228706e+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="4aca362e4882258d1b058229ddf5719b754a1a4ef0f8c6c5008b0df8f4313ac7",issuer="CN=WE1,O=Google Trust Services,C=US",serialnumber="9026f39491c7827c0d7fe88714a795f0",subject="CN=cppalliance.org",subjectalternative="cppalliance.org,*.cppalliance.org"} 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 http: preferred_ip_protocol: ip4 ip_protocol_fallback: true fail_if_body_not_matches_regexp: - This is a multi-channel Slack workspace environment which gathers users of C\+\+ 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