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  1. MariaDB Server
  2. MDEV-21433

After running several days our application wasn't able to connect to MariaDB server anymore.

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    Description

      After running several days (about 3 weeks) our application wasn't able to connect to MariaDB server anymore.

      The error message is:
      Lost connection to MySQL server at 'handshake: reading inital communication packet', system error: 0)

      Do you know any reason how this can happen ?
      What can we analyze on the system to narrow down the problem ?

      After the restart of the MariaDB server all was fine again.

      Operating system: Windows server 2008 R2
      MariaDB server: 10.3.18

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          wlad Vladislav Vaintroub added a comment - - edited

          migra, generally take a network trace, e.g with Wireshark to see what happened, if you know that the server is up and the address is correct.
          you also can try a telnet on the server:port combination, to see if server wrote a "welcome" packet.

          if there is any kind of deadlock, a memory dump, or stacktrace dump can help.

          I'd like to point out though, that we no longer support either MariaDB 5.3 nor Windows server 2008 R2.

          wlad Vladislav Vaintroub added a comment - - edited migra , generally take a network trace, e.g with Wireshark to see what happened, if you know that the server is up and the address is correct. you also can try a telnet on the server:port combination, to see if server wrote a "welcome" packet. if there is any kind of deadlock, a memory dump, or stacktrace dump can help. I'd like to point out though, that we no longer support either MariaDB 5.3 nor Windows server 2008 R2.
          migra Michael Graf added a comment -

          Sorry, the correct used version is 10.3.18 and not 5.3.18.

          migra Michael Graf added a comment - Sorry, the correct used version is 10.3.18 and not 5.3.18.

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            migra Michael Graf
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