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9a8d8a3fd0
At present option smtpchk closes the TCP connection abruptly on completion of service checking, even if successful. This can result in a very high volume of errors in backend SMTP server logs. This patch ensures an SMTP QUIT is sent and a positive 2xx response is received from the SMTP server prior to disconnection. This patch depends on the following one: * MINOR: smtpchk: Update expect rule to fully match replies to EHLO commands This patch should fix the issue #1812. It may be backported as far as 2.2 with the commit above On the 2.2, proxy_parse_smtpchk_opt() function is located in src/check.c [cf: I updated reg-tests script accordingly]
111 lines
3.2 KiB
Plaintext
111 lines
3.2 KiB
Plaintext
varnishtest "Health-checks: SMTP health-check"
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#REQUIRE_VERSION=2.2
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#REGTEST_TYPE=slow
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feature ignore_unknown_macro
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# This scripts tests health-checks for SMTP servers, enabled using
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# "option smtpchk" line.
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server s1 {
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send "220 smtp-check.vtc SMTP Server\r\n"
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recv 16
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send "250 smtp-check.vtc\r\n"
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recv 6
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send "221 smtp-check.vtc closing\r\n"
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} -start
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server s2 {
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send "220 smtp-check.vtc SMTP Server\r\n"
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recv 17
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send "250-smtp-check.vtc\r\n"
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send "250-KEYWORD\r\n"
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send "250 LAST KEYWORD\r\n"
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recv 6
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send "221 smtp-check.vtc closing\r\n"
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} -start
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server s3 {
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send "I'm not a SMTP server\r\n"
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} -start
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server s4 {
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send "421 Try again later\r\n"
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} -start
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server s5 {
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send "220 smtp-check.vtc SMTP Server\r\n"
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recv 16
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send "512 DNS error\r\n"
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} -start
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syslog S1 -level notice {
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recv
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expect ~ "[^:\\[ ]\\[${h1_pid}\\]: Health check for server be1/srv succeeded, reason: Layer7 check passed.+code: 221.+info: \"smtp-check.vtc closing\".+check duration: [[:digit:]]+ms, status: 1/1 UP."
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} -start
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syslog S2 -level notice {
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recv
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expect ~ "[^:\\[ ]\\[${h1_pid}\\]: Health check for server be2/srv succeeded, reason: Layer7 check passed.+code: 221.+info: \"smtp-check.vtc closing\".+check duration: [[:digit:]]+ms, status: 1/1 UP."
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} -start
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syslog S3 -level notice {
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recv
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expect ~ "[^:\\[ ]\\[${h1_pid}\\]: Health check for server be3/srv failed, reason: Layer7 invalid response.+info: \"I'm not a SMTP server\".+check duration: [[:digit:]]+ms, status: 0/1 DOWN."
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} -start
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syslog S4 -level notice {
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recv
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expect ~ "[^:\\[ ]\\[${h1_pid}\\]: Health check for server be4/srv failed, reason: Layer7 wrong status.+code: 421.+info: \"Try again later\".+check duration: [[:digit:]]+ms, status: 0/1 DOWN."
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} -start
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syslog S5 -level notice {
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recv
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expect ~ "[^:\\[ ]\\[${h1_pid}\\]: Health check for server be5/srv failed, reason: Layer7 wrong status.+code: 512.+info: \"DNS error\".+check duration: [[:digit:]]+ms, status: 0/1 DOWN."
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} -start
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haproxy h1 -conf {
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defaults
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mode tcp
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timeout client "${HAPROXY_TEST_TIMEOUT-5s}"
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timeout server "${HAPROXY_TEST_TIMEOUT-5s}"
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timeout connect "${HAPROXY_TEST_TIMEOUT-5s}"
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backend be1
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log ${S1_addr}:${S1_port} daemon
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option log-health-checks
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option smtpchk
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server srv ${s1_addr}:${s1_port} check inter 1s rise 1 fall 1
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backend be2
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log ${S2_addr}:${S2_port} daemon
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option log-health-checks
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option smtpchk EHLO domain.tld
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server srv ${s2_addr}:${s2_port} check inter 1s rise 1 fall 1
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backend be3
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log ${S3_addr}:${S3_port} daemon
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option log-health-checks
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option smtpchk
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server srv ${s3_addr}:${s3_port} check inter 1s rise 1 fall 1
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backend be4
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log ${S4_addr}:${S4_port} daemon
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option log-health-checks
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option smtpchk
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server srv ${s4_addr}:${s4_port} check inter 1s rise 1 fall 1
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backend be5
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log ${S5_addr}:${S5_port} daemon
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option log-health-checks
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option smtpchk EHLO domain.tld
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server srv ${s5_addr}:${s5_port} check inter 1s rise 1 fall 1
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} -start
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syslog S1 -wait
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syslog S2 -wait
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syslog S3 -wait
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syslog S4 -wait
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syslog S5 -wait
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