{"id":2740,"date":"2017-09-28T06:48:08","date_gmt":"2017-09-27T22:48:08","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=2740"},"modified":"2017-09-28T06:48:08","modified_gmt":"2017-09-27T22:48:08","slug":"mysql-server-has-gone-away%e6%8a%a5%e9%94%99%e5%8e%9f%e5%9b%a0%e6%b1%87%e6%80%bb%e7%89%88","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/shujuku\/mysql-server-has-gone-away%e6%8a%a5%e9%94%99%e5%8e%9f%e5%9b%a0%e6%b1%87%e6%80%bb%e7%89%88\/","title":{"rendered":"MySQL Server has gone away\u62a5\u9519\u539f\u56e0\u6c47\u603b\u7248"},"content":{"rendered":"

\u80cc\u666f<\/strong><\/p>\n

\u5e73\u65f6\u4e0e\u5f00\u53d1\u4ea4\u6d41\uff0c\u6216\u5728\u8bba\u575b\u56de\u7b54\u95ee\u9898\u65f6\uff0c\u53d1\u73b0\u8fd9\u4e2a\u95ee\u9898\u88ab\u95ee\u53ca\u7684\u9891\u7387\u975e\u5e38\u9ad8\uff0c\u4f8b\u5982\uff1a \u7a0b\u5e8f\u4e2d\u62a5\u9519\u201cMySQL server has gone away\u201d\u662f\u4ec0\u4e48\u610f\u601d? \u5982\u4f55\u907f\u514d? \u56e0\u6b64\uff0c\u611f\u89c9\u6709\u5fc5\u8981\u603b\u7ed3\u4e00\u4e0b\u53d1\u751f\u8fd9\u4e2a\u95ee\u9898\u7684\u539f\u56e0\u3002<\/p>\n

\u6b63\u597d\u770b\u5230\u4e00\u7bc7\u5916\u6587blog\u603b\u7ed3\u7684\u6bd4\u8f83\u597d\uff0c\u5c31\u7ffb\u8bd1\u8fc7\u6765\u4e86\uff0c\u5206\u4eab\u7ed9\u5927\u5bb6\u3002<\/p>\n

\u539f\u56e0\u4e00\uff1a MySQL \u670d\u52a1\u5b95\u4e86<\/strong><\/p>\n

\u5224\u65ad\u662f\u5426\u5c5e\u4e8e\u8fd9\u4e2a\u539f\u56e0\u7684\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff0c\u67e5\u770bmysql\u7684\u8fd0\u884c\u65f6\u957f:<\/p>\n

    \n
  1. $\u00a0mysql\u00a0-uroot\u00a0-p\u00a0-e\u00a0“show\u00a0global\u00a0status\u00a0like\u00a0‘uptime’;”<\/span>+—————+——-+<\/span><\/li>\n
  2. <\/li>\n
  3. |\u00a0Variable_name\u00a0|\u00a0Value\u00a0|<\/li>\n
  4. <\/li>\n
  5. +—————+——-+<\/span><\/li>\n
  6. <\/li>\n
  7. |\u00a0Uptime\u00a0|\u00a068928\u00a0|<\/li>\n
  8. <\/li>\n
  9. +—————+——-+<\/span><\/li>\n
  10. <\/li>\n
  11. 1\u00a0row\u00a0in<\/span>\u00a0set<\/span>\u00a0(0.04\u00a0sec)<\/li>\n<\/ol>\n

    \u6216\u8005\u67e5\u770bMySQL\u7684\u62a5\u9519\u65e5\u5fd7\uff0c\u770b\u770b\u6709\u6ca1\u6709\u91cd\u542f\u7684\u4fe1\u606f:<\/strong><\/p>\n

      \n
    1. $\u00a0tail\u00a0\/var\/log\/mysql\/error.log<\/li>\n
    2. 130101\u00a022:22:30\u00a0InnoDB:\u00a0Initializing\u00a0buffer\u00a0pool,\u00a0size<\/span>\u00a0=\u00a0256.0M<\/li>\n
    3. 130101\u00a022:22:30\u00a0InnoDB:\u00a0Completed\u00a0initialization\u00a0of<\/span>\u00a0buffer\u00a0pool<\/li>\n
    4. 130101\u00a022:22:30\u00a0InnoDB:\u00a0highest\u00a0supported\u00a0file\u00a0format\u00a0is<\/span>\u00a0Barracuda.<\/li>\n
    5. 130101\u00a022:22:30\u00a0InnoDB:\u00a01.1.8\u00a0started;\u00a0log\u00a0sequence<\/span>\u00a0number\u00a063444325509<\/li>\n
    6. 130101\u00a022:22:30\u00a0[Note]\u00a0Server\u00a0hostname\u00a0(bind-address):\u00a0‘127.0.0.1’<\/span>;\u00a0port:\u00a03306<\/li>\n
    7. 130101\u00a022:22:30\u00a0[Note]\u00a0\u00a0\u00a0–\u00a0‘127.0.0.1’<\/span>\u00a0resolves\u00a0to<\/span>\u00a0‘127.0.0.1’<\/span>;<\/li>\n
    8. 130101\u00a022:22:30\u00a0[Note]\u00a0Server\u00a0socket\u00a0created\u00a0on<\/span>\u00a0IP:\u00a0‘127.0.0.1’<\/span>.<\/li>\n
    9. 130101\u00a022:22:30\u00a0[Note]\u00a0Event\u00a0Scheduler:\u00a0Loaded\u00a00\u00a0events<\/li>\n
    10. 130101\u00a022:22:30\u00a0[Note]\u00a0\/usr\/sbin\/mysqld:\u00a0ready\u00a0for<\/span>\u00a0connections.<\/li>\n
    11. Version:\u00a0‘5.5.28-cll’<\/span>\u00a0\u00a0socket:\u00a0‘\/var\/lib\/mysql\/mysql.sock’<\/span>\u00a0\u00a0port:\u00a03306\u00a0\u00a0MySQL\u00a0Community\u00a0Server\u00a0(GPL)<\/li>\n<\/ol>\n

      \u5982\u679cuptime\u6570\u503c\u5f88\u5927\uff0c\u8868\u660eMySQL\u670d\u52a1\u8fd0\u884c\u4e86\u5f88\u4e45\u4e86\uff0c\u8bf4\u660e\u6700\u8fd1\u670d\u52a1\u6ca1\u6709\u91cd\u542f\u8fc7\u3002 \u5982\u679c\u65e5\u5fd7\u6ca1\u6709\u76f8\u5173\u4fe1\u606f\uff0c\u4e5f\u8bf4\u660eMySQL\u670d\u52a1\u6700\u8fd1\u6ca1\u6709\u91cd\u542f\u8fc7\uff0c\u53ef\u4ee5\u7ee7\u7eed\u68c0\u67e5\u4e0b\u9762\u51e0\u9879\u5185\u5bb9\u3002<\/p>\n

      \u539f\u56e02\uff1a\u8fde\u63a5\u8d85\u65f6<\/strong><\/p>\n

      \u5982\u679c\u7a0b\u5e8f\u4f7f\u7528\u7684\u662f\u957f\u8fde\u63a5\uff0c\u5219\u8fd9\u79cd\u60c5\u51b5\u7684\u53ef\u80fd\u6027\u4f1a\u6bd4\u8f83\u5927\u3002 \u5373\u67d0\u4e2a\u957f\u8fde\u63a5\u5f88\u4e45\u6ca1\u6709\u53d1\u8d77\u65b0\u7684\u8bf7\u6c42\uff0c\u8fbe\u5230\u4e86server\u7aef\u7684time out\uff0c\u88abserver\u5f3a\u884c\u5173\u95ed\u3002\u6b64\u540e\u518d\u901a\u8fc7\u8fd9\u4e2aclient\u53d1\u8d77\u67e5\u8be2\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u62a5\u9519server has gone away\u3002<\/p>\n

        \n
      1. $\u00a0mysql\u00a0-uroot\u00a0-p\u00a0-e\u00a0“show\u00a0global\u00a0variables\u00a0like\u00a0‘%timeout’;”<\/span>+—————————-+———-+<\/span><\/li>\n
      2. <\/li>\n
      3. |\u00a0Variable_name\u00a0|\u00a0Value\u00a0|<\/li>\n
      4. <\/li>\n
      5. +—————————-+———-+<\/span><\/li>\n
      6. <\/li>\n
      7. |\u00a0connect_timeout\u00a0|\u00a030\u00a0|<\/li>\n
      8. <\/li>\n
      9. |\u00a0delayed_insert_timeout\u00a0|\u00a0300\u00a0|<\/li>\n
      10. <\/li>\n
      11. |\u00a0innodb_lock_wait_timeout\u00a0|\u00a050\u00a0|<\/li>\n
      12. <\/li>\n
      13. |\u00a0innodb_rollback_on_timeout\u00a0|\u00a0OFF<\/span>\u00a0|<\/li>\n
      14. <\/li>\n
      15. |\u00a0interactive_timeout\u00a0|\u00a028800\u00a0|<\/li>\n
      16. <\/li>\n
      17. |\u00a0lock_wait_timeout\u00a0|\u00a031536000\u00a0|<\/li>\n
      18. <\/li>\n
      19. |\u00a0net_read_timeout\u00a0|\u00a030\u00a0|<\/li>\n
      20. <\/li>\n
      21. |\u00a0net_write_timeout\u00a0|\u00a060\u00a0|<\/li>\n
      22. <\/li>\n
      23. |\u00a0slave_net_timeout\u00a0|\u00a03600\u00a0|<\/li>\n
      24. <\/li>\n
      25. |\u00a0wait_timeout\u00a0|\u00a028800\u00a0|<\/li>\n
      26. <\/li>\n
      27. +—————————-+———-+mysql>\u00a0SET\u00a0SESSION\u00a0wait_timeout=5;#Wait\u00a010\u00a0secondsmysql>\u00a0SELECT\u00a0NOW();<\/span><\/li>\n
      28. <\/li>\n
      29. ERROR\u00a02006\u00a0(HY000):\u00a0MySQL\u00a0server\u00a0has\u00a0gone\u00a0away<\/li>\n
      30. <\/li>\n
      31. No<\/span>\u00a0connection<\/span>.\u00a0Trying\u00a0to<\/span>\u00a0reconnect…<\/li>\n
      32. <\/li>\n
      33. Connection<\/span>\u00a0id:\u00a0132361<\/li>\n
      34. <\/li>\n
      35. Current<\/span>\u00a0database<\/span>:\u00a0***\u00a0NONE\u00a0***+———————+<\/span><\/li>\n
      36. <\/li>\n
      37. |\u00a0NOW()\u00a0|<\/li>\n
      38. <\/li>\n
      39. +———————+<\/span><\/li>\n
      40. <\/li>\n
      41. |\u00a02013-01-02\u00a011:31:15\u00a0|<\/li>\n
      42. <\/li>\n
      43. +———————+<\/span><\/li>\n
      44. <\/li>\n
      45. 1\u00a0row\u00a0in<\/span>\u00a0set<\/span>\u00a0(0.00\u00a0sec)<\/li>\n<\/ol>\n

        \u539f\u56e03\uff1a \u8fdb\u7a0b\u5728server\u7aef\u88ab\u4e3b\u52a8kill<\/strong><\/p>\n

        \u8fd9\u79cd\u539f\u56e0\u548c\u7b2c2\u79cd\u539f\u56e0\u6bd4\u8f83\u76f8\u4f3c\uff0c\u53ea\u662f\u53d1\u8d77\u8005\u662fDBA\uff0c\u6216\u8005\u5176\u4ed6job\uff0c\u53d1\u73b0\u6709\u957f\u65f6\u95f4\u7684\u6162\u67e5\u8be2\u6267\u884ckill xxx\u5bfc\u81f4\u3002<\/p>\n

          \n
        1. $\u00a0mysql\u00a0-uroot\u00a0-p\u00a0-e\u00a0“show\u00a0global\u00a0status\u00a0like\u00a0‘com_kill'”<\/span>+—————+——-+<\/span><\/li>\n
        2. <\/li>\n
        3. |\u00a0Variable_name\u00a0|\u00a0Value\u00a0|<\/li>\n
        4. <\/li>\n
        5. +—————+——-+<\/span><\/li>\n
        6. <\/li>\n
        7. |\u00a0Com_kill\u00a0|\u00a00\u00a0|<\/li>\n
        8. <\/li>\n
        9. +—————+——-+<\/span><\/li>\n<\/ol>\n

          \u539f\u56e04\uff1a Your SQL statement was too large<\/strong><\/p>\n

          \u5f53\u67e5\u8be2\u7684\u7ed3\u679c\u96c6\u8d85\u8fc7 max_allowed_packet \u4e5f\u4f1a\u51fa\u73b0\u8fd9\u6837\u7684\u62a5\u9519\uff0c\u5b9a\u4f4d\u65b9\u6cd5\u662f\u6253\u51fa\u76f8\u5173\u62a5\u9519\u7684\u8bed\u53e5\u3002 \u7528select*into outfile \u7684\u65b9\u5f0f\u5bfc\u51fa\u5230\u6587\u4ef6\uff0c\u67e5\u770b\u6587\u4ef6\u5927\u5c0f\u662f\u5426\u8d85\u8fc7max_allowed_packet\uff0c\u5982\u679c\u8d85\u8fc7\u5219\u9700\u8981\u8c03\u6574\u53c2\u6570\uff0c\u6216\u8005\u4f18\u5316\u8bed\u53e5\u3002<\/p>\n

            \n
          1. mysql>\u00a0show\u00a0global<\/span>\u00a0variables\u00a0like<\/span>\u00a0‘max_allowed_packet’<\/span>;<\/li>\n
          2. +——————–+———+<\/span><\/li>\n
          3. <\/li>\n
          4. |\u00a0Variable_name\u00a0|\u00a0Value\u00a0|<\/li>\n
          5. <\/li>\n
          6. +——————–+———+<\/span><\/li>\n
          7. <\/li>\n
          8. |\u00a0max_allowed_packet\u00a0|\u00a01048576\u00a0|<\/li>\n
          9. <\/li>\n
          10. +——————–+———+<\/span><\/li>\n
          11. <\/li>\n
          12. 1\u00a0row\u00a0in<\/span>\u00a0set<\/span>\u00a0(0.00\u00a0sec)#\u00a0\u4fee\u6539\u53c2\u6570\uff1amysql>\u00a0set<\/span>\u00a0global<\/span>\u00a0max_allowed_packet=1024*1024*16;mysql>\u00a0show\u00a0global<\/span>\u00a0variables\u00a0like<\/span>\u00a0‘max_allowed_packet’<\/span>;<\/li>\n
          13. <\/li>\n
          14. +——————–+———-+<\/span><\/li>\n
          15. <\/li>\n
          16. |\u00a0Variable_name\u00a0|\u00a0Value\u00a0|<\/li>\n
          17. <\/li>\n
          18. +——————–+———-+<\/span><\/li>\n
          19. <\/li>\n
          20. |\u00a0max_allowed_packet\u00a0|\u00a016777216\u00a0|<\/li>\n
          21. <\/li>\n
          22. +——————–+———-+<\/span><\/li>\n
          23. <\/li>\n
          24. 1\u00a0row\u00a0in<\/span>\u00a0set<\/span>\u00a0(0.00\u00a0sec)<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

            \u80cc\u666f \u5e73\u65f6\u4e0e\u5f00\u53d1\u4ea4\u6d41\uff0c\u6216\u5728\u8bba\u575b\u56de\u7b54\u95ee\u9898\u65f6\uff0c\u53d1\u73b0\u8fd9\u4e2a\u95ee\u9898\u88ab\u95ee\u53ca\u7684\u9891\u7387\u975e\u5e38\u9ad8\uff0c\u4f8b\u5982\uff1a \u7a0b\u5e8f\u4e2d\u62a5\u9519\u201cMySQL se … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[10],"tags":[45],"class_list":["post-2740","post","type-post","status-publish","format-standard","hentry","category-shujuku","tag-mysql"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=2740"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2740\/revisions"}],"predecessor-version":[{"id":2741,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2740\/revisions\/2741"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=2740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=2740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=2740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}