Yes in my code the first expect is quoted.
smtp_starttls:
prober: tcp
timeout: 5s
tcp:
query_response:
- expect: "^220 ([^ ]+) ESMTP (.+)$"
- send: "EHLO prober\r"
- expect: "^250-STARTTLS"
- send: "STARTTLS\r"
- expect: "^220"
- starttls: true
- send: "EHLO prober\r"
- expect: "^250-AUTH"
- send: "QUIT\r"
Probably due to the "timeout" is too less? Should I adjust 5s to 15s or 60s?
On Monday, July 4, 2022 at 5:55:09 PM UTC+8 Brian Candler wrote:
> The following works for me with blackbox_exporter 0.21.0 (maybe your first
> 'expect' regexp needs to be quoted?)
>
> modules:
> smtp_starttls:
> prober: tcp
> timeout: 5s
> tcp:
> query_response:
> - expect: "^220 ([^ ]+) ESMTP (.+)$"
> send: "EHLO prober"
> - expect: "^250-STARTTLS"
> - expect: "^250 .*$"
> send: "STARTTLS"
> - expect: "^220"
>
> starttls: true
> - send: "EHLO prober"
> - expect: "^250 .*$"
> send: "QUIT"
>
> Result:
>
> # *curl -g
> 'localhost:9115/probe?module=smtp_starttls&target=aspmx.l.google.com:25&debug=true'*
> Logs for the probe:
> ts=2022-07-04T09:50:46.764604425Z caller=main.go:351 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Beginning probe" probe=tcp
> timeout_seconds=5
> ts=2022-07-04T09:50:46.764875668Z caller=tcp.go:40 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Resolving target address"
> target=aspmx.l.google.com ip_protocol=ip6
> ts=2022-07-04T09:50:46.765954096Z caller=tcp.go:40 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Resolved target address"
> target=aspmx.l.google.com ip=2a00:1450:400c:c07::1b
> ts=2022-07-04T09:50:46.766011111Z caller=tcp.go:121 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Dialing TCP without TLS"
> ts=2022-07-04T09:50:46.776962616Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Successfully dialed"
> ts=2022-07-04T09:50:46.77708032Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Processing query response
> entry" entry_number=0
> ts=2022-07-04T09:50:46.788075017Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line="220
> mx.google.com ESMTP u1-20020a056000038100b0021bbcef3a69si36572085wrf.542
> - gsmtp"
> ts=2022-07-04T09:50:46.788168204Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Regexp matched" regexp="^220
> ([^ ]+) ESMTP (.+)$" line="220 mx.google.com ESMTP
> u1-20020a056000038100b0021bbcef3a69si36572085wrf.542 - gsmtp"
> ts=2022-07-04T09:50:46.788223914Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Sending line" line="EHLO
> prober"
> ts=2022-07-04T09:50:46.788362926Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Processing query response
> entry" entry_number=1
> ts=2022-07-04T09:50:46.801755535Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line="
> 250-mx.google.com at your service, [xx:xx:xx:xx::33]"
> ts=2022-07-04T09:50:46.801856147Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line="250-SIZE
> 157286400"
> ts=2022-07-04T09:50:46.801889927Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line=250-8BITMIME
> ts=2022-07-04T09:50:46.801922312Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line=250-STARTTLS
> ts=2022-07-04T09:50:46.801955499Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Regexp matched"
> regexp=^250-STARTTLS line=250-STARTTLS
> ts=2022-07-04T09:50:46.801989646Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Processing query response
> entry" entry_number=2
> ts=2022-07-04T09:50:46.802029066Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line"
> line=250-ENHANCEDSTATUSCODES
> ts=2022-07-04T09:50:46.802063318Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line"
> line=250-PIPELINING
> ts=2022-07-04T09:50:46.802094713Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line=250-CHUNKING
> ts=2022-07-04T09:50:46.802126198Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line="250
> SMTPUTF8"
> ts=2022-07-04T09:50:46.802159858Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Regexp matched" regexp="^250
> .*$" line="250 SMTPUTF8"
> ts=2022-07-04T09:50:46.802191065Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Sending line" line=STARTTLS
> ts=2022-07-04T09:50:46.802271697Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Processing query response
> entry" entry_number=3
> ts=2022-07-04T09:50:46.812211682Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line="220 2.0.0
> Ready to start TLS"
> ts=2022-07-04T09:50:46.812279339Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Regexp matched" regexp=^220
> line="220 2.0.0 Ready to start TLS"
> ts=2022-07-04T09:50:46.833573801Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="TLS Handshake (client)
> succeeded."
> ts=2022-07-04T09:50:46.833793385Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Processing query response
> entry" entry_number=4
> ts=2022-07-04T09:50:46.833838422Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Sending line" line="EHLO
> prober"
> ts=2022-07-04T09:50:46.833960852Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Processing query response
> entry" entry_number=5
> ts=2022-07-04T09:50:46.84464181Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line="
> 250-mx.google.com at your service, [xx:xx:xx:xx::33]"
> ts=2022-07-04T09:50:46.844771942Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line="250-SIZE
> 157286400"
> ts=2022-07-04T09:50:46.844839074Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line=250-8BITMIME
> ts=2022-07-04T09:50:46.844910271Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line"
> line=250-ENHANCEDSTATUSCODES
> ts=2022-07-04T09:50:46.844974538Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line"
> line=250-PIPELINING
> ts=2022-07-04T09:50:46.845061058Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line=250-CHUNKING
> ts=2022-07-04T09:50:46.84512579Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Read line" line="250
> SMTPUTF8"
> ts=2022-07-04T09:50:46.845193403Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Regexp matched" regexp="^250
> .*$" line="250 SMTPUTF8"
> ts=2022-07-04T09:50:46.84525809Z caller=main.go:144 module=smtp_starttls
> target=aspmx.l.google.com:25 level=debug msg="Sending line" line=QUIT
> ts=2022-07-04T09:50:46.845583228Z caller=main.go:351 module=smtp_starttls
> target=aspmx.l.google.com:25 level=info msg="Probe succeeded"
> duration_seconds=0.080912196
>
>
>
>
> Metrics that would have been returned:
> # HELP probe_dns_lookup_time_seconds Returns the time taken for probe dns
> lookup in seconds
> # TYPE probe_dns_lookup_time_seconds gauge
> probe_dns_lookup_time_seconds 0.001103057
>
> # HELP probe_duration_seconds Returns how long the probe took to complete
> in seconds
> # TYPE probe_duration_seconds gauge
> probe_duration_seconds 0.080912196
>
> # HELP probe_failed_due_to_regex Indicates if probe failed due to regex
> # TYPE probe_failed_due_to_regex gauge
> probe_failed_due_to_regex 0
> # HELP probe_ip_addr_hash Specifies the hash of IP address. It's useful to
> detect if the IP address changes.
> # TYPE probe_ip_addr_hash gauge
> probe_ip_addr_hash 2.766777767e+09
>
> # HELP probe_ip_protocol Specifies whether probe ip protocol is IP4 or IP6
> # TYPE probe_ip_protocol gauge
> probe_ip_protocol 6
> # HELP probe_ssl_earliest_cert_expiry Returns earliest SSL cert expiry date
> # TYPE probe_ssl_earliest_cert_expiry gauge
> probe_ssl_earliest_cert_expiry 1.661764429e+09
> # HELP probe_ssl_last_chain_expiry_timestamp_seconds Returns last SSL
> chain expiry in unixtime
> # TYPE probe_ssl_last_chain_expiry_timestamp_seconds gauge
> probe_ssl_last_chain_expiry_timestamp_seconds 1.661764429e+09
>
> # HELP probe_success Displays whether or not the probe was a success
> # TYPE probe_success gauge
> probe_success 1
>
>
>
>
> Module configuration:
> prober: tcp
> timeout: 5s
> http:
> ip_protocol_fallback: true
> follow_redirects: true
> enable_http2: true
>
> tcp:
> ip_protocol_fallback: true
> query_response:
> - expect: ^220 ([^ ]+) ESMTP (.+)$
> send: EHLO prober
> - expect: ^250-STARTTLS
> - expect: ^250 .*$
> send: STARTTLS
> - expect: ^220
>
> starttls: true
> - send: EHLO prober
> - expect: ^250 .*$
> send: QUIT
>
> icmp:
> ip_protocol_fallback: true
> dns:
> ip_protocol_fallback: true
> recursion_desired: true
>
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