我使用certbot为域生成证书，它第一次运行良好。 之后我改变了我的亚马逊ec2实例（亚马逊linux）用于其他地区。所以我更改了子域的A记录，现在由于DNS问题，我无法在新实例上生成证书
certbot-auto certonly --debug --standalone -d dev.diagnetwork.com
2016-07-19 17:03:29,603:DEBUG:certbot.main:Root logging level set at 30
2016-07-19 17:03:29,604:INFO:certbot.main:Saving debug log to /var/log/letsencrypt/letsencrypt.log
2016-07-19 17:03:29,604:DEBUG:certbot.main:certbot version: 0.8.1
2016-07-19 17:03:29,604:DEBUG:certbot.main:Arguments: ['--debug', '--standalone', '-d', 'dev.diagnetwork.com']
2016-07-19 17:03:29,605:DEBUG:certbot.main:Discovered plugins: PluginsRegistry(PluginEntryPoint#apache,PluginEntryPoint#webroot,PluginEntryPoint#null,PluginEntryPoint#manual,PluginEntryPoint#standalone)
2016-07-19 17:03:29,609:DEBUG:certbot.plugins.selection:Requested authenticator standalone and installer None
2016-07-19 17:03:29,804:DEBUG:certbot.plugins.selection:Single candidate plugin: * standalone
Description: Automatically use a temporary webserver
Interfaces: IAuthenticator, IPlugin
Entry point: standalone = certbot.plugins.standalone:Authenticator
Initialized: <certbot.plugins.standalone.Authenticator object at 0x7f0133b10d10>
Prep: True
2016-07-19 17:03:29,806:DEBUG:certbot.plugins.selection:Selected authenticator <certbot.plugins.standalone.Authenticator object at 0x7f0133b10d10> and installer None
2016-07-19 17:03:29,942:DEBUG:certbot.main:Picked account: <Account(388bf562a96cea8013b7660447da660e)>
2016-07-19 17:03:29,943:DEBUG:root:Sending GET request to https://acme-v01.api.letsencrypt.org/directory. args: (), kwargs: {}
2016-07-19 17:03:29,946:INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org
2016-07-19 17:03:30,132:DEBUG:requests.packages.urllib3.connectionpool:"GET /directory HTTP/1.1" 200 280
2016-07-19 17:03:30,133:DEBUG:root:Received <Response [200]>. Headers: {'Content-Length': '280', 'Expires': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Boulder-Request-Id': 'A4t6LE9szTZDv0FuCE7bQnICx2zyVtRVeQacSWenKUE', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Connection': 'keep-alive', 'Pragma': 'no-cache', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Date': 'Tue, 19 Jul 2016 17:03:30 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': 'VLinxcmE9YznBxpdisr5YqFQqf9KFT3grGMLfwvD3Jg'}. Content: '{\n "new-authz": "https://acme-v01.api.letsencrypt.org/acme/new-authz",\n "new-cert": "https://acme-v01.api.letsencrypt.org/acme/new-cert",\n "new-reg": "https://acme-v01.api.letsencrypt.org/acme/new-reg",\n "revoke-cert": "https://acme-v01.api.letsencrypt.org/acme/revoke-cert"\n}'
2016-07-19 17:03:30,133:DEBUG:acme.client:Received response <Response [200]> (headers: {'Content-Length': '280', 'Expires': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Boulder-Request-Id': 'A4t6LE9szTZDv0FuCE7bQnICx2zyVtRVeQacSWenKUE', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Connection': 'keep-alive', 'Pragma': 'no-cache', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Date': 'Tue, 19 Jul 2016 17:03:30 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': 'VLinxcmE9YznBxpdisr5YqFQqf9KFT3grGMLfwvD3Jg'}): '{\n "new-authz": "https://acme-v01.api.letsencrypt.org/acme/new-authz",\n "new-cert": "https://acme-v01.api.letsencrypt.org/acme/new-cert",\n "new-reg": "https://acme-v01.api.letsencrypt.org/acme/new-reg",\n "revoke-cert": "https://acme-v01.api.letsencrypt.org/acme/revoke-cert"\n}'
2016-07-19 17:03:30,134:DEBUG:root:Requesting fresh nonce
2016-07-19 17:03:30,134:DEBUG:root:Sending HEAD request to https://acme-v01.api.letsencrypt.org/acme/new-authz. args: (), kwargs: {}
2016-07-19 17:03:30,327:DEBUG:requests.packages.urllib3.connectionpool:"HEAD /acme/new-authz HTTP/1.1" 405 0
2016-07-19 17:03:30,328:DEBUG:root:Received <Response [405]>. Headers: {'Content-Length': '91', 'Pragma': 'no-cache', 'Boulder-Request-Id': 'zZzFamjI7WOmh85keAw4lLd8laZfe74W1TYq3HNR7mk', 'Expires': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Server': 'nginx', 'Connection': 'keep-alive', 'Allow': 'POST', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Date': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Content-Type': 'application/problem+json', 'Replay-Nonce': 'CgmdRQWWj5_PPfveAA7c1o50xkOk3entsaA27xlBwmA'}. Content: ''
2016-07-19 17:03:30,328:DEBUG:acme.client:Storing nonce: '\n\t\x9dE\x05\x96\x8f\x9f\xcf=\xfb\xde\x00\x0e\xdc\xd6\x8et\xc6C\xa4\xdd\xe9\xed\xb1\xa06\xef\x19A\xc2`'
2016-07-19 17:03:30,328:DEBUG:acme.jose.json_util:Omitted empty fields: combinations=None, challenges=None, expires=None, status=None
2016-07-19 17:03:30,329:DEBUG:acme.client:Serialized JSON: {"identifier": {"type": "dns", "value": "xxxxxxxxxxxxx.com"}, "resource": "new-authz"}
2016-07-19 17:03:30,330:DEBUG:acme.jose.json_util:Omitted empty fields: kid=None, x5c=(), crit=(), jwk=None, typ=None, jku=None, cty=None, x5tS256=None, x5u=None, alg=None, x5t=None
2016-07-19 17:03:30,332:DEBUG:acme.jose.json_util:Omitted empty fields: kid=None, x5c=(), crit=(), typ=None, jku=None, cty=None, x5tS256=None, x5u=None, x5t=None, nonce=None
2016-07-19 17:03:30,332:DEBUG:root:Sending POST request to https://acme-v01.api.letsencrypt.org/acme/new-authz. args: (), kwargs: {'data': '{"header": {"alg": "RS256", "jwk": {"e": "AQAB", "kty": "RSA", "n": "rKDIxM9XKqEZ69kyTl7L6l1OZuEaJRJdSje2z4VC8pJt0sxRJXu32BVy5zC7uKLDmj-pUxcR2N5zAZTD4hJC-CwavEp9IT4zsQacQK1E9aGQOewmAF54_qUJQrZal167BOmMIENKcQ-sbVz1OLAhz85oByCAXwW6T8v5qoXCPYIX7pmgp4IuI4WNBcWeBqFv3Joj78oSReZXCuJId8RqsP5DeYRNpetvqUHijj3JGiQnclnUW2iTRUuiilAkqswDqk4J4uAraLylprTt2iQYA4wLZDaC2Con_u3c62aLpYpK5J2D5ZVoGJANjAzzNfkQAhsun3h3LsXLgfZ0Z2n2aw"}}, "protected": "eyJub25jZSI6ICJDZ21kUlFXV2o1X1BQZnZlQUE3YzFvNTB4a09rM2VudHNhQTI3eGxCd21BIn0", "payload": "eyJpZGVudGlmaWVyIjogeyJ0eXBlIjogImRucyIsICJ2YWx1ZSI6ICJkZXYuZGlhZ25ldHdvcmsuY29tIn0sICJyZXNvdXJjZSI6ICJuZXctYXV0aHoifQ", "signature": "lQjyTE1QljLHo1CxV6T94yrPb76ruaGDNd5ZthPI-9-rUDULu8VnCVHqO0v2ZYlfKlZUza80U6-ZFRmw4lGFaB1gK0w_jV7ONIg0dzjkTu8NEdKZ6PcMUuRdZuCbwsln9coIjy_7f5tQ7ukzSbQJXEbz6MTQ-5UALr5ft_JkSLTifwJFGtejzveY3KrpeP4WaI-hGzwLLOxjnFh_tn3Z2NdOqrTWJzGn_rqvlwX0OlG-GvcV6k9a9eK9aSK4T13Vs0N5ZYqX1IbVNHcqbgvoJ50LVUYlWWTDsihrZ4ttQl_onpmy5jRDKuQSeS8B3hVRKhgdmOh4fI9OYLjpd13Ddg"}'}
2016-07-19 17:03:30,629:DEBUG:requests.packages.urllib3.connectionpool:"POST /acme/new-authz HTTP/1.1" 201 1004
2016-07-19 17:03:30,629:DEBUG:root:Received <Response [201]>. Headers: {'Content-Length': '1004', 'Expires': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Boulder-Request-Id': 'PknRp_fwf5o0vaHUpy_53-SwSKCN0Qwk0kBnm15EexI', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/new-cert>;rel="next"', 'Location': 'https://acme-v01.api.letsencrypt.org/acme/authz/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0', 'Pragma': 'no-cache', 'Boulder-Requester': '2692481', 'Date': 'Tue, 19 Jul 2016 17:03:30 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': 'B_6L7ZtDh3CzsQtRO_e8vceSEcbZGihWBGntNZ6h_G0'}. Content: '{\n "identifier": {\n "type": "dns",\n "value": "xxxxxxxxxxxxxxx.com"\n },\n "status": "pending",\n "expires": "2016-07-26T17:03:30.455575285Z",\n "challenges": [\n {\n "type": "dns-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466859",\n "token": "6Z6vCV4zSvxn5U6WxpUcf2imTMT5kLj7rbRN5fmF9GI"\n },\n {\n "type": "tls-sni-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860",\n "token": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI"\n },\n {\n "type": "http-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466861",\n "token": "G581_pOSgF203q69BWk8tmHt1YH8lMLAidtBBQ90vnQ"\n }\n ],\n "combinations": [\n [\n 0\n ],\n [\n 2\n ],\n [\n 1\n ]\n ]\n}'
2016-07-19 17:03:30,629:DEBUG:acme.client:Storing nonce: '\x07\xfe\x8b\xed\x9bC\x87p\xb3\xb1\x0bQ;\xf7\xbc\xbd\xc7\x92\x11\xc6\xd9\x1a(V\x04i\xed5\x9e\xa1\xfcm'
2016-07-19 17:03:30,630:DEBUG:acme.client:Received response <Response [201]> (headers: {'Content-Length': '1004', 'Expires': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Boulder-Request-Id': 'PknRp_fwf5o0vaHUpy_53-SwSKCN0Qwk0kBnm15EexI', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/new-cert>;rel="next"', 'Location': 'https://acme-v01.api.letsencrypt.org/acme/authz/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0', 'Pragma': 'no-cache', 'Boulder-Requester': '2692481', 'Date': 'Tue, 19 Jul 2016 17:03:30 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': 'B_6L7ZtDh3CzsQtRO_e8vceSEcbZGihWBGntNZ6h_G0'}): '{\n "identifier": {\n "type": "dns",\n "value": "xxxxxxxxxxxxxxxxxxxx.com"\n },\n "status": "pending",\n "expires": "2016-07-26T17:03:30.455575285Z",\n "challenges": [\n {\n "type": "dns-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466859",\n "token": "6Z6vCV4zSvxn5U6WxpUcf2imTMT5kLj7rbRN5fmF9GI"\n },\n {\n "type": "tls-sni-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860",\n "token": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI"\n },\n {\n "type": "http-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466861",\n "token": "G581_pOSgF203q69BWk8tmHt1YH8lMLAidtBBQ90vnQ"\n }\n ],\n "combinations": [\n [\n 0\n ],\n [\n 2\n ],\n [\n 1\n ]\n ]\n}'
2016-07-19 17:03:30,630:DEBUG:acme.challenges:dns-01 was not recognized, full message: {u'status': u'pending', u'token': u'6Z6vCV4zSvxn5U6WxpUcf2imTMT5kLj7rbRN5fmF9GI', u'type': u'dns-01', u'uri': u'https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466859'}
2016-07-19 17:03:30,630:INFO:certbot.auth_handler:Performing the following challenges:
2016-07-19 17:03:30,631:INFO:certbot.auth_handler:tls-sni-01 challenge for xxxxxxxxxxxxxxxxxxxx.com
2016-07-19 17:03:30,643:INFO:certbot.auth_handler:Waiting for verification...
2016-07-19 17:03:30,643:DEBUG:acme.client:Serialized JSON: {"keyAuthorization": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI.B7zuU4v6Umg0TGs8jOHl_ihptyLw9pPsE1dRzUZoOu0", "type": "tls-sni-01", "resource": "challenge"}
2016-07-19 17:03:30,644:DEBUG:acme.jose.json_util:Omitted empty fields: kid=None, x5c=(), crit=(), jwk=None, typ=None, jku=None, cty=None, x5tS256=None, x5u=None, alg=None, x5t=None
2016-07-19 17:03:30,646:DEBUG:acme.jose.json_util:Omitted empty fields: kid=None, x5c=(), crit=(), typ=None, jku=None, cty=None, x5tS256=None, x5u=None, x5t=None, nonce=None
2016-07-19 17:03:30,646:DEBUG:root:Sending POST request to https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860. args: (), kwargs: {'data': '{"header": {"alg": "RS256", "jwk": {"e": "AQAB", "kty": "RSA", "n": "rKDIxM9XKqEZ69kyTl7L6l1OZuEaJRJdSje2z4VC8pJt0sxRJXu32BVy5zC7uKLDmj-pUxcR2N5zAZTD4hJC-CwavEp9IT4zsQacQK1E9aGQOewmAF54_qUJQrZal167BOmMIENKcQ-sbVz1OLAhz85oByCAXwW6T8v5qoXCPYIX7pmgp4IuI4WNBcWeBqFv3Joj78oSReZXCuJId8RqsP5DeYRNpetvqUHijj3JGiQnclnUW2iTRUuiilAkqswDqk4J4uAraLylprTt2iQYA4wLZDaC2Con_u3c62aLpYpK5J2D5ZVoGJANjAzzNfkQAhsun3h3LsXLgfZ0Z2n2aw"}}, "protected": "eyJub25jZSI6ICJCXzZMN1p0RGgzQ3pzUXRST19lOHZjZVNFY2JaR2loV0JHbnROWjZoX0cwIn0", "payload": "eyJrZXlBdXRob3JpemF0aW9uIjogImJaanllcTM0LWZfVDRiVWN5MURWaFBibnZfQ2FuU3UxYzVQVWV6cmhqcUkuQjd6dVU0djZVbWcwVEdzOGpPSGxfaWhwdHlMdzlwUHNFMWRSelVab091MCIsICJ0eXBlIjogInRscy1zbmktMDEiLCAicmVzb3VyY2UiOiAiY2hhbGxlbmdlIn0", "signature": "kZkv-CFLZH31z3kZ1naF7g41XcslUbVBPH42wptZzlov3_rWom-N8appf_eaLQ2P7lMVE89-gyM7fHmoWHl0Gpmkk4Xgmer9L4QdQyVixn60mm-1q6QMsWXT35e7Z7zokfUsOYkXQiEImIwZ0sxBc59dzxGIX7LhDFePZfyeZvH4_P0nUgpCgRqqXTni-O32stAM0i00GxLdg0kikc3UVD09iCU6sUpKpXc3kQHNLlkIkfiNN6zAngBnWDAgSMhquYKas2kk0hxnJw1UguyY9Ieu8Kd6vExi3U-yjGVOL2hVP3LkU46GS8eqvphC1mlndILGM-3VD1UYtwNAIsQt_A"}'}
2016-07-19 17:03:30,902:DEBUG:requests.packages.urllib3.connectionpool:"POST /acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860 HTTP/1.1" 202 338
2016-07-19 17:03:30,902:DEBUG:root:Received <Response [202]>. Headers: {'Content-Length': '338', 'Boulder-Request-Id': 'qq5g3DMMDllSKoWuHRIRSY5oy9RNvpHZ9uF_zzYEeuk', 'Expires': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Server': 'nginx', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/authz/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0>;rel="up"', 'Location': 'https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860', 'Pragma': 'no-cache', 'Boulder-Requester': '2692481', 'Date': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Content-Type': 'application/json', 'Replay-Nonce': 'VHPW9aR8jmuShp8pFrFuxFiQapbdip6SYQNzBaC-b7Y'}. Content: '{\n "type": "tls-sni-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860",\n "token": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI",\n "keyAuthorization": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI.B7zuU4v6Umg0TGs8jOHl_ihptyLw9pPsE1dRzUZoOu0"\n}'
2016-07-19 17:03:30,903:DEBUG:acme.client:Storing nonce: 'Ts\xd6\xf5\xa4|\x8ek\x92\x86\x9f)\x16\xb1n\xc4X\x90j\x96\xdd\x8a\x9e\x92a\x03s\x05\xa0\xbeo\xb6'
2016-07-19 17:03:30,903:DEBUG:acme.client:Received response <Response [202]> (headers: {'Content-Length': '338', 'Boulder-Request-Id': 'qq5g3DMMDllSKoWuHRIRSY5oy9RNvpHZ9uF_zzYEeuk', 'Expires': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Server': 'nginx', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/authz/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0>;rel="up"', 'Location': 'https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860', 'Pragma': 'no-cache', 'Boulder-Requester': '2692481', 'Date': 'Tue, 19 Jul 2016 17:03:30 GMT', 'Content-Type': 'application/json', 'Replay-Nonce': 'VHPW9aR8jmuShp8pFrFuxFiQapbdip6SYQNzBaC-b7Y'}): '{\n "type": "tls-sni-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860",\n "token": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI",\n "keyAuthorization": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI.B7zuU4v6Umg0TGs8jOHl_ihptyLw9pPsE1dRzUZoOu0"\n}'
2016-07-19 17:03:33,906:DEBUG:root:Sending GET request to https://acme-v01.api.letsencrypt.org/acme/authz/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0. args: (), kwargs: {}
2016-07-19 17:03:34,184:DEBUG:requests.packages.urllib3.connectionpool:"GET /acme/authz/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0 HTTP/1.1" 200 1473
2016-07-19 17:03:34,185:DEBUG:root:Received <Response [200]>. Headers: {'Content-Length': '1473', 'Expires': 'Tue, 19 Jul 2016 17:03:34 GMT', 'Boulder-Request-Id': 'kbximz8gXN1-tbWUpkkxA5s9PyXQMnZ3DM2mztNnv00', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/new-cert>;rel="next"', 'Pragma': 'no-cache', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Date': 'Tue, 19 Jul 2016 17:03:34 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': '9rCskcPn_HaHylVaCH-VViSBt78YdDh-I10sX5UlXak'}. Content: '{\n "identifier": {\n "type": "dns",\n "value": "xxxxxxxxxxxxxxxxxxxx.com"\n },\n "status": "invalid",\n "expires": "2016-07-26T17:03:30Z",\n "challenges": [\n {\n "type": "dns-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466859",\n "token": "6Z6vCV4zSvxn5U6WxpUcf2imTMT5kLj7rbRN5fmF9GI"\n },\n {\n "type": "tls-sni-01",\n "status": "invalid",\n "error": {\n "type": "urn:acme:error:connection",\n "detail": "DNS problem: SERVFAIL looking up A for xxxxxxxxxxxxxxxxxxxx.com",\n "status": 400\n },\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860",\n "token": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI",\n "keyAuthorization": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI.B7zuU4v6Umg0TGs8jOHl_ihptyLw9pPsE1dRzUZoOu0",\n "validationRecord": [\n {\n "hostname": "xxxxxxxxxxxxxxxxxxxx.com",\n "port": "",\n "addressesResolved": null,\n "addressUsed": ""\n }\n ]\n },\n {\n "type": "http-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466861",\n "token": "G581_pOSgF203q69BWk8tmHt1YH8lMLAidtBBQ90vnQ"\n }\n ],\n "combinations": [\n [\n 0\n ],\n [\n 2\n ],\n [\n 1\n ]\n ]\n}'
2016-07-19 17:03:34,185:DEBUG:acme.client:Received response <Response [200]> (headers: {'Content-Length': '1473', 'Expires': 'Tue, 19 Jul 2016 17:03:34 GMT', 'Boulder-Request-Id': 'kbximz8gXN1-tbWUpkkxA5s9PyXQMnZ3DM2mztNnv00', 'Strict-Transport-Security': 'max-age=604800', 'Server': 'nginx', 'Connection': 'keep-alive', 'Link': '<https://acme-v01.api.letsencrypt.org/acme/new-cert>;rel="next"', 'Pragma': 'no-cache', 'Cache-Control': 'max-age=0, no-cache, no-store', 'Date': 'Tue, 19 Jul 2016 17:03:34 GMT', 'X-Frame-Options': 'DENY', 'Content-Type': 'application/json', 'Replay-Nonce': '9rCskcPn_HaHylVaCH-VViSBt78YdDh-I10sX5UlXak'}): '{\n "identifier": {\n "type": "dns",\n "value": "xxxxxxxxxxxxxxxxxxxx.com"\n },\n "status": "invalid",\n "expires": "2016-07-26T17:03:30Z",\n "challenges": [\n {\n "type": "dns-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466859",\n "token": "6Z6vCV4zSvxn5U6WxpUcf2imTMT5kLj7rbRN5fmF9GI"\n },\n {\n "type": "tls-sni-01",\n "status": "invalid",\n "error": {\n "type": "urn:acme:error:connection",\n "detail": "DNS problem: SERVFAIL looking up A for xxxxxxxxxxxxxxxxxxxx.com",\n "status": 400\n },\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466860",\n "token": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI",\n "keyAuthorization": "bZjyeq34-f_T4bUcy1DVhPbnv_CanSu1c5PUezrhjqI.B7zuU4v6Umg0TGs8jOHl_ihptyLw9pPsE1dRzUZoOu0",\n "validationRecord": [\n {\n "hostname": "xxxxxxxxxxxxxxxxxxxx.com",\n "port": "",\n "addressesResolved": null,\n "addressUsed": ""\n }\n ]\n },\n {\n "type": "http-01",\n "status": "pending",\n "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466861",\n "token": "G581_pOSgF203q69BWk8tmHt1YH8lMLAidtBBQ90vnQ"\n }\n ],\n "combinations": [\n [\n 0\n ],\n [\n 2\n ],\n [\n 1\n ]\n ]\n}'
2016-07-19 17:03:34,186:DEBUG:acme.challenges:dns-01 was not recognized, full message: {u'status': u'pending', u'token': u'6Z6vCV4zSvxn5U6WxpUcf2imTMT5kLj7rbRN5fmF9GI', u'type': u'dns-01', u'uri': u'https://acme-v01.api.letsencrypt.org/acme/challenge/C8A3Age_Z-MjpcLCotd2af-iWSl02mOqRcBgpacQSw0/184466859'}
2016-07-19 17:03:34,186:INFO:certbot.reporter:Reporting to user: The following errors were reported by the server:
Domain: xxxxxxxxxxxxxxxxxxxx.com
Type: connection
Detail: DNS problem: SERVFAIL looking up A for xxxxxxxxxxxxxxxxxxxx.com
To fix these errors, please make sure that your domain name was entered correctly and the DNS A record(s) for that domain contain(s) the right IP address. Additionally, please check that your computer has a publicly routable IP address and that no firewalls are preventing the server from communicating with the client. If you're using the webroot plugin, you should also verify that you are serving files from the webroot path you provided.
2016-07-19 17:03:34,186:INFO:certbot.auth_handler:Cleaning up challenges
2016-07-19 17:03:34,187:DEBUG:certbot.plugins.standalone:Stopping server at 0.0.0.0:443...
2016-07-19 17:03:34,646:DEBUG:certbot.main:Exiting abnormally:
Traceback (most recent call last):
File "/home/ec2-user/.local/share/letsencrypt/bin/letsencrypt", line 11, in <module>
sys.exit(main())
File "/home/ec2-user/.local/share/letsencrypt/local/lib/python2.7/dist-packages/certbot/main.py", line 744, in main
return config.func(config, plugins)
File "/home/ec2-user/.local/share/letsencrypt/local/lib/python2.7/dist-packages/certbot/main.py", line 555, in obtain_cert
_, action = _auth_from_domains(le_client, config, domains, lineage)
File "/home/ec2-user/.local/share/letsencrypt/local/lib/python2.7/dist-packages/certbot/main.py", line 94, in _auth_from_domains
lineage = le_client.obtain_and_enroll_certificate(domains)
File "/home/ec2-user/.local/share/letsencrypt/local/lib/python2.7/dist-packages/certbot/client.py", line 276, in obtain_and_enroll_certificate
certr, chain, key, _ = self.obtain_certificate(domains)
File "/home/ec2-user/.local/share/letsencrypt/local/lib/python2.7/dist-packages/certbot/client.py", line 247, in obtain_certificate
self.config.allow_subset_of_names)
File "/home/ec2-user/.local/share/letsencrypt/local/lib/python2.7/dist-packages/certbot/auth_handler.py", line 74, in get_authorizations
self._respond(resp, best_effort)
File "/home/ec2-user/.local/share/letsencrypt/local/lib/python2.7/dist-packages/certbot/auth_handler.py", line 131, in _respond
self._poll_challenges(chall_update, best_effort)
File "/home/ec2-user/.local/share/letsencrypt/local/lib/python2.7/dist-packages/certbot/auth_handler.py", line 195, in _poll_challenges
raise errors.FailedChallenges(all_failed_achalls)
FailedChallenges: Failed authorization procedure. xxxxxxxxxxxxxxxxxxxx.com (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: DNS problem: SERVFAIL looking up A for xxxxxxxxxxxxxxxxxxxx.com
如果你有一个想法......我完全失去了
答案 0 :(得分：2)
问题是由DNSSEC引起的。 DNSSEC已在域上激活，因为我的第一个注册商可以支持此选项。当我更改Amazon Route 53的注册商时，DNSSEC仍然处于激活状态，但Amazon Route 53不支持此选项。 Amazon没有删除选项或明确警告，而是将此信息放在丢失页面的工具提示中......“DNSSEC已激活，但Route 53尚未支持” 用户界面不是他们最好的技能。
无论如何，谢谢你的帮助！
答案 1 :(得分：0)
可能会发生两件事导致此类错误： - 您的域DNS记录太新，尚未在所有DNS服务器上列出。如果问题是这样的话，如果你给它一些时间，例如2天，那么它就会自行解决。 - DS记录可阻止您的域名进行验证。这是我的情况，我的一个.eu域名无法通过Let's Encrypt certbot。我不知道我的DNS记录中有这个域的DS记录。 我一删除它，我的域就会使用certbot验证广告安装的SSL Certs。 要检查此问题，请登录您的域面板。转到DNS区域文件。寻找DS记录。如果有任何记录，请删除并保存您的区域文件。 如果这对您来说很困难，请尝试在cloudflare.com上注册您的域名。如果您的域名有DS记录，Cloudflare会向您发送电子邮件。
我希望它可以帮到你。