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file_get_contents, get_headers, and curl have stopped working with error: Connection refused



The 2019 Stack Overflow Developer Survey Results Are InCurl with ipv6 not working by defaultA mystic curl error on Ubuntucurl: (7) Failed to connect to 127.0.0.1 port 5000: Connection refused when using Flaskcurl: (7) Failed to connect to [external site] port 8080: Connection refusedProblems with Curl and VariablesSSL certificate error with curlDifference between curl and aria2?Elastic search curl -X GET “localhost:9200/” Connection RefusedConnection timed out installing curlUbuntu 16.04 openssl s_client write:errno=104



.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








0















At some point yesterday the functions: file_get_contents, get_headers, and curl have stopped working with error: Connection refused. Ex:



Curl: (7) Failed to connect to www.alebalweb.com port 443: Connection refused.


I do not understand why, I was just uploading files and no one touched anything on the server. Until a moment before everything worked and it worked for years.
With Curl, I do the cronjob of my site once a day, and never had any problems.
I thought the SSL certificates had expired, but it seems not. The site is online and it works, if I try to access the site via curl from my local PC, curl works smoothly. I thought I was banned at UFW or fail2ban for some reason, but I changed my local IP and nothing changed. And anyway I see a lot of errors in the Apache logs, from many different IPs.
The problem occurs on all sites on my server.



I really can't understand what could have happened, everything worked perfectly until yesterday afternoon.



The Server is Ubuntu 18.04 on vultr.



I also found some strange errors in syslog, probably related.



Apr 8 06:25:03 Vultr_LA_18 rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="689" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
Apr 8 06:25:07 Vultr_LA_18 popularity-contest: unable to submit report to https://popcon.ubuntu.com/popcon-submit.cgi.
Apr 8 06:25:07 Vultr_LA_18 popularity-contest: unable to submit report.


Apr 8 06:32:04 Vultr_LA_18 rsyslogd: unexpected GnuTLS error -53 - this could be caused by a broken connection. GnuTLS reports: Error in the push function. [v8.32.0$
Apr 8 06:32:04 Vultr_LA_18 rsyslogd: omfwd: TCPSendBuf error -2078, destruct TCP Connection to log.nixstats.com:10514 [v8.32.0 try http://www.rsyslog.com/e/2078 ]
Apr 8 06:32:04 Vultr_LA_18 rsyslogd: action 'action 1' suspended (module 'builtin:omfwd'), retry 0. There should be messages before this one giving the reason for sus$
Apr 8 06:32:04 Vultr_LA_18 rsyslogd: action 'action 1' resumed (module 'builtin:omfwd') [v8.32.0 try http://www.rsyslog.com/e/2359 ]

Apr 8 06:36:06 Vultr_LA_18 systemd-resolved[631]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced $









share|improve this question






























    0















    At some point yesterday the functions: file_get_contents, get_headers, and curl have stopped working with error: Connection refused. Ex:



    Curl: (7) Failed to connect to www.alebalweb.com port 443: Connection refused.


    I do not understand why, I was just uploading files and no one touched anything on the server. Until a moment before everything worked and it worked for years.
    With Curl, I do the cronjob of my site once a day, and never had any problems.
    I thought the SSL certificates had expired, but it seems not. The site is online and it works, if I try to access the site via curl from my local PC, curl works smoothly. I thought I was banned at UFW or fail2ban for some reason, but I changed my local IP and nothing changed. And anyway I see a lot of errors in the Apache logs, from many different IPs.
    The problem occurs on all sites on my server.



    I really can't understand what could have happened, everything worked perfectly until yesterday afternoon.



    The Server is Ubuntu 18.04 on vultr.



    I also found some strange errors in syslog, probably related.



    Apr 8 06:25:03 Vultr_LA_18 rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="689" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
    Apr 8 06:25:07 Vultr_LA_18 popularity-contest: unable to submit report to https://popcon.ubuntu.com/popcon-submit.cgi.
    Apr 8 06:25:07 Vultr_LA_18 popularity-contest: unable to submit report.


    Apr 8 06:32:04 Vultr_LA_18 rsyslogd: unexpected GnuTLS error -53 - this could be caused by a broken connection. GnuTLS reports: Error in the push function. [v8.32.0$
    Apr 8 06:32:04 Vultr_LA_18 rsyslogd: omfwd: TCPSendBuf error -2078, destruct TCP Connection to log.nixstats.com:10514 [v8.32.0 try http://www.rsyslog.com/e/2078 ]
    Apr 8 06:32:04 Vultr_LA_18 rsyslogd: action 'action 1' suspended (module 'builtin:omfwd'), retry 0. There should be messages before this one giving the reason for sus$
    Apr 8 06:32:04 Vultr_LA_18 rsyslogd: action 'action 1' resumed (module 'builtin:omfwd') [v8.32.0 try http://www.rsyslog.com/e/2359 ]

    Apr 8 06:36:06 Vultr_LA_18 systemd-resolved[631]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced $









    share|improve this question


























      0












      0








      0








      At some point yesterday the functions: file_get_contents, get_headers, and curl have stopped working with error: Connection refused. Ex:



      Curl: (7) Failed to connect to www.alebalweb.com port 443: Connection refused.


      I do not understand why, I was just uploading files and no one touched anything on the server. Until a moment before everything worked and it worked for years.
      With Curl, I do the cronjob of my site once a day, and never had any problems.
      I thought the SSL certificates had expired, but it seems not. The site is online and it works, if I try to access the site via curl from my local PC, curl works smoothly. I thought I was banned at UFW or fail2ban for some reason, but I changed my local IP and nothing changed. And anyway I see a lot of errors in the Apache logs, from many different IPs.
      The problem occurs on all sites on my server.



      I really can't understand what could have happened, everything worked perfectly until yesterday afternoon.



      The Server is Ubuntu 18.04 on vultr.



      I also found some strange errors in syslog, probably related.



      Apr 8 06:25:03 Vultr_LA_18 rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="689" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
      Apr 8 06:25:07 Vultr_LA_18 popularity-contest: unable to submit report to https://popcon.ubuntu.com/popcon-submit.cgi.
      Apr 8 06:25:07 Vultr_LA_18 popularity-contest: unable to submit report.


      Apr 8 06:32:04 Vultr_LA_18 rsyslogd: unexpected GnuTLS error -53 - this could be caused by a broken connection. GnuTLS reports: Error in the push function. [v8.32.0$
      Apr 8 06:32:04 Vultr_LA_18 rsyslogd: omfwd: TCPSendBuf error -2078, destruct TCP Connection to log.nixstats.com:10514 [v8.32.0 try http://www.rsyslog.com/e/2078 ]
      Apr 8 06:32:04 Vultr_LA_18 rsyslogd: action 'action 1' suspended (module 'builtin:omfwd'), retry 0. There should be messages before this one giving the reason for sus$
      Apr 8 06:32:04 Vultr_LA_18 rsyslogd: action 'action 1' resumed (module 'builtin:omfwd') [v8.32.0 try http://www.rsyslog.com/e/2359 ]

      Apr 8 06:36:06 Vultr_LA_18 systemd-resolved[631]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced $









      share|improve this question
















      At some point yesterday the functions: file_get_contents, get_headers, and curl have stopped working with error: Connection refused. Ex:



      Curl: (7) Failed to connect to www.alebalweb.com port 443: Connection refused.


      I do not understand why, I was just uploading files and no one touched anything on the server. Until a moment before everything worked and it worked for years.
      With Curl, I do the cronjob of my site once a day, and never had any problems.
      I thought the SSL certificates had expired, but it seems not. The site is online and it works, if I try to access the site via curl from my local PC, curl works smoothly. I thought I was banned at UFW or fail2ban for some reason, but I changed my local IP and nothing changed. And anyway I see a lot of errors in the Apache logs, from many different IPs.
      The problem occurs on all sites on my server.



      I really can't understand what could have happened, everything worked perfectly until yesterday afternoon.



      The Server is Ubuntu 18.04 on vultr.



      I also found some strange errors in syslog, probably related.



      Apr 8 06:25:03 Vultr_LA_18 rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="689" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
      Apr 8 06:25:07 Vultr_LA_18 popularity-contest: unable to submit report to https://popcon.ubuntu.com/popcon-submit.cgi.
      Apr 8 06:25:07 Vultr_LA_18 popularity-contest: unable to submit report.


      Apr 8 06:32:04 Vultr_LA_18 rsyslogd: unexpected GnuTLS error -53 - this could be caused by a broken connection. GnuTLS reports: Error in the push function. [v8.32.0$
      Apr 8 06:32:04 Vultr_LA_18 rsyslogd: omfwd: TCPSendBuf error -2078, destruct TCP Connection to log.nixstats.com:10514 [v8.32.0 try http://www.rsyslog.com/e/2078 ]
      Apr 8 06:32:04 Vultr_LA_18 rsyslogd: action 'action 1' suspended (module 'builtin:omfwd'), retry 0. There should be messages before this one giving the reason for sus$
      Apr 8 06:32:04 Vultr_LA_18 rsyslogd: action 'action 1' resumed (module 'builtin:omfwd') [v8.32.0 try http://www.rsyslog.com/e/2359 ]

      Apr 8 06:36:06 Vultr_LA_18 systemd-resolved[631]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced $






      curl






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 2 days ago







      alebal

















      asked 2 days ago









      alebalalebal

      439




      439




















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          0














          I reset Fail2ban, and something seems to have come back to work...



          But I have absolutely no idea how the server managed to block itself via Fail2ban...



          Any ideas? Above all, any ideas to prevent this from happening again in the future?






          share|improve this answer























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            0














            I reset Fail2ban, and something seems to have come back to work...



            But I have absolutely no idea how the server managed to block itself via Fail2ban...



            Any ideas? Above all, any ideas to prevent this from happening again in the future?






            share|improve this answer



























              0














              I reset Fail2ban, and something seems to have come back to work...



              But I have absolutely no idea how the server managed to block itself via Fail2ban...



              Any ideas? Above all, any ideas to prevent this from happening again in the future?






              share|improve this answer

























                0












                0








                0







                I reset Fail2ban, and something seems to have come back to work...



                But I have absolutely no idea how the server managed to block itself via Fail2ban...



                Any ideas? Above all, any ideas to prevent this from happening again in the future?






                share|improve this answer













                I reset Fail2ban, and something seems to have come back to work...



                But I have absolutely no idea how the server managed to block itself via Fail2ban...



                Any ideas? Above all, any ideas to prevent this from happening again in the future?







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 2 days ago









                alebalalebal

                439




                439



























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