{"id":26184,"date":"2025-10-20T14:40:40","date_gmt":"2025-10-20T06:40:40","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/how-to-fix-mysql-connection-issues-on-tokyo-servers\/"},"modified":"2025-10-20T14:57:24","modified_gmt":"2025-10-20T06:57:24","slug":"how-to-fix-mysql-connection-issues-on-tokyo-servers","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/blog\/how-to-fix-mysql-connection-issues-on-tokyo-servers\/","title":{"rendered":"\u5982\u4f55\u89e3\u51b3\u4e1c\u4eac\u670d\u52a1\u5668\u4e0a\u7684MySQL\u8fde\u63a5\u95ee\u9898"},"content":{"rendered":"<p>\u5904\u7406<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/cn2\/\" target=\"_blank\">\u4e1c\u4eac\u670d\u52a1\u5668<\/a>\u4e0a\u7684<a href=\"https:\/\/www.varidata.com\/zh-cn\/blog\/connect-japan-server-to-hong-kong-database-a-tech-guide\/\" target=\"_blank\">MySQL<\/a>\u8fde\u63a5\u95ee\u9898\u662f\u7ba1\u7406\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u4e2d\u7279\u522b\u5177\u6709\u6311\u6218\u6027\u7684\u4e00\u4e2a\u65b9\u9762\u3002\u65e0\u8bba\u60a8\u662f\u8fd0\u8425\u9ad8\u6d41\u91cf\u7535\u5546\u5e73\u53f0\u3001\u7ba1\u7406\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff0c\u8fd8\u662f\u7ef4\u62a4\u4f01\u4e1a\u5e94\u7528\u7a0b\u5e8f\uff0c\u7a33\u5b9a\u7684\u6570\u636e\u5e93\u8fde\u63a5\u5bf9\u4e1a\u52a1\u8fd0\u8425\u90fd\u81f3\u5173\u91cd\u8981\u3002\u672c\u7efc\u5408\u6307\u5357\u6e90\u81ea\u591a\u5e74\u5728\u65e5\u672c\u6570\u636e\u4e2d\u5fc3\u7684\u5b9e\u8df5\u7ecf\u9a8c\uff0c\u65e8\u5728\u5e2e\u52a9\u60a8\u6709\u6548\u8bca\u65ad\u3001\u89e3\u51b3\u548c\u9884\u9632MySQL\u8fde\u63a5\u95ee\u9898\u3002\u6211\u4eec\u5c06\u63a2\u8ba8\u5e38\u89c1\u548c\u4e1c\u4eac\u7279\u6709\u7684\u6311\u6218\uff0c\u4e3a\u60a8\u63d0\u4f9b\u5728\u5b9e\u9645\u573a\u666f\u4e2d\u884c\u4e4b\u6709\u6548\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<h2><strong>\u5e38\u89c1MySQL\u8fde\u63a5\u9519\u8bef\u6a21\u5f0f<\/strong><\/h2>\n<p>\u4e86\u89e3\u9519\u8bef\u6a21\u5f0f\u5bf9\u4e8e\u9ad8\u6548\u6545\u969c\u6392\u67e5\u81f3\u5173\u91cd\u8981\u3002\u5728\u4e1c\u4eac\u670d\u52a1\u5668\u73af\u5883\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9047\u5230\u51e0\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u8fde\u63a5\u95ee\u9898\uff0c\u6bcf\u79cd\u90fd\u9700\u8981\u7279\u5b9a\u7684\u89e3\u51b3\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u9519\u8bef2013\uff1a\u67e5\u8be2\u671f\u95f4\u4e0eMySQL\u670d\u52a1\u5668\u65ad\u5f00\u8fde\u63a5 &#8211; \u901a\u5e38\u7531\u7f51\u7edc\u4e0d\u7a33\u5b9a\u6216\u8d85\u65f6\u8bbe\u7f6e\u672a\u8003\u8651\u8de8\u533a\u57df\u8bbe\u7f6e\u4e2d\u5178\u578b\u7684\u9ad8\u5ef6\u8fdf\u8fde\u63a5\u5bfc\u81f4<\/li>\n<li>\u9519\u8bef1045\uff1a\u62d2\u7edd\u7528\u6237\u8bbf\u95ee &#8211; \u5728\u5b89\u5168\u66f4\u65b0\u540e\u6216\u4e3b\u673a\u540d\u89e3\u6790\u672a\u6b63\u786e\u914d\u7f6e\u65e5\u6587\u5b57\u7b26\u7f16\u7801\u65f6\u7ecf\u5e38\u51fa\u73b0<\/li>\n<li>\u9519\u8bef1129\uff1a\u7531\u4e8e\u591a\u6b21\u8fde\u63a5\u9519\u8bef\u4e3b\u673a\u88ab\u963b\u6b62 &#8211; \u5728DDoS\u4e8b\u4ef6\u671f\u95f4\u6216\u5e94\u7528\u7a0b\u5e8f\u672a\u80fd\u9ad8\u6548\u5904\u7406\u8fde\u63a5\u6c60\u65f6\u5e38\u89c1<\/li>\n<li>\u9519\u8bef1226\uff1a\u7528\u6237\u8d85\u8fc7max_user_connections\u9650\u5236 &#8211; \u901a\u5e38\u5728\u6d41\u91cf\u9ad8\u5cf0\u671f\u6216\u8fde\u63a5\u9650\u5236\u672a\u9488\u5bf9\u4e9a\u6d32\u9ad8\u5cf0\u4f7f\u7528\u6a21\u5f0f\u4f18\u5316\u65f6\u53d1\u751f<\/li>\n<li>\u9519\u8bef2003\uff1a\u65e0\u6cd5\u8fde\u63a5\u5230MySQL\u670d\u52a1\u5668 &#8211; \u901a\u5e38\u4e0e\u9632\u706b\u5899\u914d\u7f6e\u6216\u65e5\u672cISP\u7279\u6709\u7684\u7f51\u7edc\u8def\u7531\u95ee\u9898\u6709\u5173<\/li>\n<\/ul>\n<h2><strong>\u521d\u59cb\u8bca\u65ad\u6b65\u9aa4<\/strong><\/h2>\n<p>\u5728\u6392\u67e5\u4e1c\u4eac\u670d\u52a1\u5668\u7684MySQL\u8fde\u63a5\u95ee\u9898\u65f6\uff0c\u5fc5\u987b\u9075\u5faa\u8003\u8651\u5230\u672c\u5730\u57fa\u7840\u8bbe\u65bd\u7279\u70b9\u7684\u7cfb\u7edf\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\u9a8c\u8bc1\u7f51\u7edc\u8fde\u63a5\uff1a\n<pre>ping your-mysql-host\r\ntelnet your-mysql-host 3306\r\ntraceroute your-mysql-host\r\nnetstat -tupln | grep mysql<\/pre>\n<p>\u7279\u522b\u6ce8\u610f\u65e5\u672c\u5de5\u4f5c\u65f6\u95f4\uff089:00-18:00 JST\uff09\u7684\u5ef6\u8fdf\u6a21\u5f0f<\/p>\n<\/li>\n<li>\u68c0\u67e5MySQL\u670d\u52a1\u72b6\u6001\uff1a\n<pre>systemctl status mysql\r\njournalctl -u mysql --since \"1 hour ago\"\r\nmysql -V\r\nshow global status like '%connect%';<\/pre>\n<\/li>\n<li>\u76d1\u63a7\u7cfb\u7edf\u8d44\u6e90\uff1a\n<pre>top -c\r\niostat -xz 1\r\nvmstat 1\r\nfree -m<\/pre>\n<p>\u67e5\u627e\u4e0e\u4e9a\u592a\u5730\u533a\u9ad8\u5cf0\u65f6\u6bb5\u76f8\u5173\u7684\u6a21\u5f0f<\/p>\n<\/li>\n<\/ol>\n<h2><strong>\u7f51\u7edc\u5c42\u8c03\u67e5<\/strong><\/h2>\n<p>\u65e5\u672c\u6570\u636e\u4e2d\u5fc3\u901a\u5e38\u5177\u6709\u72ec\u7279\u7684\u7f51\u7edc\u67b6\u6784\u548c\u5b89\u5168\u5b9e\u65bd\u65b9\u6848\uff0c\u9700\u8981\u7279\u522b\u5173\u6ce8\u3002\u4ee5\u4e0b\u662f\u7f51\u7edc\u5c42\u9762\u6545\u969c\u6392\u67e5\u7684\u8be6\u7ec6\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u9632\u706b\u5899\u914d\u7f6e\u5ba1\u8ba1\uff1a\n<pre>sudo iptables -L -n | grep 3306\r\nsudo ufw status verbose\r\nsudo csf -l<\/pre>\n<p>\u786e\u4fdd\u89c4\u5219\u540c\u65f6\u652f\u6301IPv4\u548cIPv6\u6d41\u91cf\uff0c\u56e0\u4e3a\u65e5\u672c\u7f51\u7edc\u5927\u91cf\u4f7f\u7528IPv6<\/p>\n<\/li>\n<li>\u7f51\u7edc\u6027\u80fd\u5206\u6790\uff1a\n<pre>mtr -n your-mysql-host\r\niperf3 -c your-mysql-host\r\ntcpdump -i any port 3306 -w mysql_traffic.pcap<\/pre>\n<\/li>\n<li>DNS\u89e3\u6790\u9a8c\u8bc1\uff1a\n<pre>dig +short your-mysql-host\r\nhost your-mysql-host\r\nnslookup your-mysql-host<\/pre>\n<p>\u68c0\u67e5\u901a\u8fc7\u65e5\u672cDNS\u670d\u52a1\u5668\u7684\u6b63\u786e\u89e3\u6790<\/p>\n<\/li>\n<\/ul>\n<h2><strong>\u914d\u7f6e\u4f18\u5316<\/strong><\/h2>\n<p>\u4e3a\u4e86\u5728\u4e1c\u4eac\u670d\u52a1\u5668\u73af\u5883\u4e2d\u83b7\u5f97\u6700\u4f73\u6027\u80fd\uff0c\u60a8\u7684MySQL\u914d\u7f6e\u9700\u8981\u4ed4\u7ec6\u8c03\u4f18\u3002\u4ee5\u4e0b\u662f\u5173\u952e\u53c2\u6570\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n<pre>\r\n# \u8fde\u63a5\u7ba1\u7406\r\nmax_connections = 1000\r\nmax_user_connections = 500\r\nwait_timeout = 600\r\ninteractive_timeout = 600\r\nconnect_timeout = 10\r\n\r\n# \u7f13\u51b2\u533a\u8bbe\u7f6e\r\ninnodb_buffer_pool_size = 12G\r\ninnodb_buffer_pool_instances = 8\r\nkey_buffer_size = 256M\r\nmax_allowed_packet = 16M\r\n\r\n# \u7ebf\u7a0b\u7ba1\u7406\r\nthread_cache_size = 100\r\nthread_stack = 256K\r\ninnodb_thread_concurrency = 16\r\n\r\n# \u7f51\u7edc\u8bbe\u7f6e\r\nbind-address = 0.0.0.0\r\nmax_connect_errors = 100000\r\nskip-name-resolve\r\n<\/pre>\n<p>\u8fd9\u4e9b\u8bbe\u7f6e\u4e13\u95e8\u9488\u5bf9\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u4e2d\u5fc3\u5e38\u89c1\u7684\u9ad8\u541e\u5410\u91cf\u73af\u5883\u8fdb\u884c\u4e86\u4f18\u5316\u3002\u60a8\u5e94\u8be5\u6839\u636e\u670d\u52a1\u5668\u53ef\u7528\u8d44\u6e90\u8c03\u6574\u6570\u503c\uff1a<\/p>\n<ul>\n<li>\u5bf9\u4e8e32GB RAM\u670d\u52a1\u5668\uff1a\u5c0660-70%\u5206\u914d\u7ed9innodb_buffer_pool_size<\/li>\n<li>\u5bf9\u4e8e\u9ad8\u5e76\u53d1\u5e94\u7528\uff1a\u589e\u52a0thread_cache_size<\/li>\n<li>\u5bf9\u4e8e\u7f51\u7edc\u7a33\u5b9a\u6027\uff1a\u6839\u636e\u7f51\u7edc\u5ef6\u8fdf\u8c03\u6574connect_timeout<\/li>\n<\/ul>\n<h2><strong>\u6027\u80fd\u8c03\u4f18<\/strong><\/h2>\n<p>\u4f18\u5316\u4e1c\u4eac\u670d\u52a1\u5668MySQL\u6027\u80fd\u9700\u8981\u8003\u8651\u672c\u5730\u6d41\u91cf\u6a21\u5f0f\u548c\u57fa\u7840\u8bbe\u65bd\u7279\u70b9\u7684\u591a\u65b9\u9762\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\u8fde\u63a5\u6c60\u5b9e\u73b0\uff1a\n<ul>\n<li>ProxySQL\u914d\u7f6e\uff1a\n<pre>\r\nmysql_servers:\r\n{\r\n    hostname: \"backend-mysql\"\r\n    port: 3306\r\n    hostgroup: 1\r\n    max_connections: 2000\r\n    max_replication_lag: 5\r\n}\r\n                <\/pre>\n<\/li>\n<li>\u8fde\u63a5\u6c60\u5927\u5c0f\u8bbe\u7f6e\uff1a\n<pre>\r\nthread_pool_size = 16\r\nthread_pool_max_threads = 1000\r\nthread_pool_idle_timeout = 60\r\n                <\/pre>\n<\/li>\n<li>\u76d1\u63a7\u6307\u6807\uff1a\n<pre>\r\nSHOW STATUS LIKE 'Threads_%';\r\nSHOW PROCESSLIST;\r\nSHOW STATUS LIKE 'Connection%';\r\n                <\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u67e5\u8be2\u4f18\u5316\u7b56\u7565\uff1a\n<ul>\n<li>\u5b9e\u73b0\u5e26\u6709\u9002\u5f53\u5931\u6548\u5904\u7406\u7684\u67e5\u8be2\u7f13\u5b58<\/li>\n<li>\u4f7f\u7528EXPLAIN ANALYZE\u8fdb\u884c\u67e5\u8be2\u6027\u80fd\u5206\u6790<\/li>\n<li>\u5b9a\u671f\u8fdb\u884c\u7d22\u5f15\u7ef4\u62a4\u548c\u4f18\u5316<\/li>\n<li>\u6839\u636e\u8bbf\u95ee\u6a21\u5f0f\u5bf9\u5927\u578b\u8868\u8fdb\u884c\u5206\u533a<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u76d1\u63a7\u548c\u9884\u9632<\/strong><\/h2>\n<p>\u5728\u4e1c\u4eac\u6570\u636e\u4e2d\u5fc3\u5b9e\u65bd\u5f3a\u5927\u7684\u76d1\u63a7\u7cfb\u7edf\u5bf9\u7ef4\u6301MySQL\u7a33\u5b9a\u8fd0\u884c\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u5168\u9762\u7684\u76d1\u63a7\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u6307\u6807\u6536\u96c6\u548c\u53ef\u89c6\u5316\uff1a\n<pre>\r\n# Prometheus MySQL\u5bfc\u51fa\u5668\u914d\u7f6e\r\nglobal:\r\n  scrape_interval: 15s\r\nscrape_configs:\r\n  - job_name: 'mysql'\r\n    static_configs:\r\n      - targets: ['localhost:9104']\r\n\r\n# Grafana\u4eea\u8868\u677f\u6307\u6807\r\n- MySQL\u8fde\u63a5\u6570\uff08\u5f53\u524d\u3001\u6700\u5927\u3001\u5931\u8d25\uff09\r\n- \u67e5\u8be2\u54cd\u5e94\u65f6\u95f4\r\n- \u7f13\u51b2\u6c60\u5229\u7528\u7387\r\n- InnoDB\u6307\u6807\r\n- \u7f51\u7edc\u6d41\u91cf\u6a21\u5f0f\r\n        <\/pre>\n<\/li>\n<li>\u544a\u8b66\u914d\u7f6e\uff1a\n<pre>\r\n# \u544a\u8b66\u89c4\u5219\u793a\u4f8b\r\ngroups:\r\n- name: MySQLAlerts\r\n  rules:\r\n  - alert: HighConnectionCount\r\n    expr: mysql_global_status_threads_connected > 800\r\n    for: 5m\r\n    labels:\r\n      severity: warning\r\n    annotations:\r\n      description: \"\u8fde\u63a5\u6570\u8d85\u8fc7max_connections\u768480%\"\r\n        <\/pre>\n<\/li>\n<li>\u6027\u80fd\u8d8b\u52bf\u5206\u6790\uff1a\n<ul>\n<li>\u6bcf\u65e5\u9ad8\u5cf0\u4f7f\u7528\u6a21\u5f0f\uff08\u901a\u5e38\u572810:00-16:00 JST\uff09<\/li>\n<li>\u7528\u4e8e\u5bb9\u91cf\u89c4\u5212\u7684\u5468\u8d8b\u52bf<\/li>\n<li>\u7528\u4e8e\u6269\u5c55\u51b3\u7b56\u7684\u6708\u589e\u957f\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u4e1c\u4eac\u670d\u52a1\u5668\u73af\u5883\u6700\u4f73\u5b9e\u8df5<\/strong><\/h2>\n<p>\u5728\u65e5\u672c\u6570\u636e\u4e2d\u5fc3\u8fd0\u8425MySQL\u9700\u8981\u7279\u5b9a\u7684\u8003\u8651\u548c\u4f18\u5316\uff1a<\/p>\n<ol>\n<li>\u5730\u7406\u5206\u5e03\u7b56\u7565\uff1a\n<ul>\n<li>\u4e3b\u670d\u52a1\u5668\u914d\u7f6e\uff1a\n<pre>\r\nserver-id = 1\r\nlog_bin = \/var\/log\/mysql\/mysql-bin.log\r\nbinlog_format = ROW\r\nsync_binlog = 1\r\ninnodb_flush_log_at_trx_commit = 1\r\n                <\/pre>\n<\/li>\n<li>\u53ea\u8bfb\u526f\u672c\u8bbe\u7f6e\uff1a\n<pre>\r\nserver-id = 2\r\nrelay_log = \/var\/log\/mysql\/mysql-relay-bin\r\nread_only = 1\r\nsuper_read_only = 1\r\n                <\/pre>\n<\/li>\n<li>\u8d1f\u8f7d\u5747\u8861\u5668\u914d\u7f6e\uff1a\n<pre>\r\nbackend mysql-cluster\r\n    mode tcp\r\n    balance roundrobin\r\n    server mysql-1 10.0.0.1:3306 check\r\n    server mysql-2 10.0.0.2:3306 check backup\r\n                <\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u5907\u4efd\u548c\u6062\u590d\uff1a\n<ul>\n<li>\u81ea\u52a8\u5907\u4efd\u811a\u672c\uff1a\n<pre>\r\n#!\/bin\/bash\r\nDATE=$(date +%Y%m%d)\r\nmysqldump --single-transaction \\\r\n    --master-data=2 \\\r\n    --all-databases \\\r\n    | gzip > \/backup\/mysql-${DATE}.sql.gz\r\n                <\/pre>\n<\/li>\n<li>\u65f6\u95f4\u70b9\u6062\u590d\u8bbe\u7f6e\uff1a\n<pre>\r\nbinlog_expire_logs_seconds = 604800\r\nmax_binlog_size = 100M\r\nbinlog_row_image = MINIMAL\r\n                <\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u6545\u969c\u6392\u67e5\u6e05\u5355<\/strong><\/h2>\n<p>\u5b9e\u65bd\u8fd9\u4e2a\u5168\u9762\u7684\u6e05\u5355\u4ee5\u7cfb\u7edf\u5730\u89e3\u51b3\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>\u2713 \u7f51\u7edc\u8bca\u65ad\uff1a\n<ul>\n<li>\u6570\u636e\u5305\u4e22\u5931\u8c03\u67e5<\/li>\n<li>\u8de8\u533a\u57df\u5ef6\u8fdf\u6d4b\u91cf<\/li>\n<li>DNS\u89e3\u6790\u9a8c\u8bc1<\/li>\n<li>SSL\/TLS\u8bc1\u4e66\u9a8c\u8bc1<\/li>\n<\/ul>\n<\/li>\n<li>\u2713 \u8d44\u6e90\u76d1\u63a7\uff1a\n<ul>\n<li>CPU\u4f7f\u7528\u7387\u6a21\u5f0f<\/li>\n<li>\u5185\u5b58\u4f7f\u7528\u548c\u4ea4\u6362\u6d3b\u52a8<\/li>\n<li>\u78c1\u76d8I\/O\u6027\u80fd<\/li>\n<li>\u7f51\u7edc\u5e26\u5bbd\u6d88\u8017<\/li>\n<\/ul>\n<\/li>\n<li>\u2713 \u6570\u636e\u5e93\u5065\u5eb7\u68c0\u67e5\uff1a\n<ul>\n<li>\u8fde\u63a5\u72b6\u6001\u9a8c\u8bc1<\/li>\n<li>\u8868\u9501\u5206\u6790<\/li>\n<li>\u4e8b\u52a1\u65e5\u5fd7\u5ba1\u67e5<\/li>\n<li>\u590d\u5236\u5ef6\u8fdf\u76d1\u63a7<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u7ed3\u8bba<\/strong><\/h2>\n<p>\u5728\u4e1c\u4eac\u670d\u52a1\u5668\u4e0a\u6210\u529f\u7ba1\u7406MySQL\u8fde\u63a5\u9700\u8981\u6df1\u5165\u7406\u89e3\u6570\u636e\u5e93\u5185\u90e8\u673a\u5236\u548c\u65e5\u672c\u57fa\u7840\u8bbe\u65bd\u7279\u70b9\u3002\u901a\u8fc7\u5b9e\u65bd\u672c\u6307\u5357\u4e2d\u6982\u8ff0\u7684\u76d1\u63a7\u7cfb\u7edf\u3001\u4f18\u5316\u6280\u672f\u548c\u6700\u4f73\u5b9e\u8df5\uff0c\u60a8\u5c06\u80fd\u591f\u5728\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\u7ef4\u6301\u7a33\u5065\u7684\u6570\u636e\u5e93\u8fd0\u8425\u3002\u8bf7\u8bb0\u4f4f\u5b9a\u671f\u68c0\u67e5\u548c\u66f4\u65b0\u914d\u7f6e\uff0c\u4ee5\u9002\u5e94\u6d41\u91cf\u6a21\u5f0f\u7684\u6f14\u53d8\u548c\u65b0MySQL\u7248\u672c\u7684\u53d1\u5e03\u3002\u4e3a\u83b7\u5f97\u6700\u4f73\u6027\u80fd\uff0c\u5728\u5fae\u8c03\u6570\u636e\u5e93\u8bbe\u7f6e\u65f6\u59cb\u7ec8\u8981\u8003\u8651\u65e5\u672c\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u548c\u7528\u6237\u884c\u4e3a\u6a21\u5f0f\u7684\u72ec\u7279\u7279\u5f81\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5904\u7406\u4e1c\u4eac\u670d\u52a1\u5668\u4e0a\u7684MySQL\u8fde\u63a5\u95ee\u9898\u662f\u7ba1\u7406\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u4e2d\u7279\u522b\u5177\u6709\u6311\u6218\u6027\u7684\u4e00\u4e2a\u65b9\u9762\u3002\u65e0\u8bba\u60a8\u662f\u8fd0\u8425\u9ad8\u6d41\u91cf\u7535\u5546\u5e73\u53f0\u3001\u7ba1\u7406\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff0c\u8fd8\u662f\u7ef4\u62a4\u4f01\u4e1a\u5e94\u7528\u7a0b\u5e8f\uff0c\u7a33\u5b9a\u7684\u6570\u636e\u5e93\u8fde\u63a5\u5bf9\u4e1a\u52a1\u8fd0\u8425\u90fd\u81f3\u5173\u91cd\u8981\u3002\u672c\u7efc\u5408\u6307\u5357\u6e90\u81ea\u591a\u5e74\u5728\u65e5\u672c\u6570\u636e\u4e2d\u5fc3\u7684\u5b9e\u8df5\u7ecf\u9a8c\uff0c\u65e8\u5728\u5e2e\u52a9\u60a8\u6709\u6548\u8bca\u65ad\u3001\u89e3\u51b3\u548c\u9884\u9632MySQL\u8fde\u63a5\u95ee\u9898\u3002\u6211\u4eec\u5c06\u63a2\u8ba8\u5e38\u89c1\u548c\u4e1c\u4eac\u7279\u6709\u7684\u6311\u6218\uff0c\u4e3a\u60a8\u63d0\u4f9b\u5728\u5b9e\u9645\u573a\u666f\u4e2d\u884c\u4e4b\u6709\u6548\u7684\u89e3\u51b3\u65b9\u6848\u3002 \u5e38\u89c1MySQL\u8fde\u63a5\u9519\u8bef\u6a21\u5f0f \u4e86\u89e3\u9519\u8bef\u6a21\u5f0f\u5bf9\u4e8e\u9ad8\u6548\u6545\u969c\u6392\u67e5\u81f3\u5173\u91cd\u8981\u3002\u5728\u4e1c\u4eac\u670d\u52a1\u5668\u73af\u5883\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9047\u5230\u51e0\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u8fde\u63a5\u95ee\u9898\uff0c\u6bcf\u79cd\u90fd\u9700\u8981\u7279\u5b9a\u7684\u89e3\u51b3\u65b9\u6cd5\uff1a \u9519\u8bef2013\uff1a\u67e5\u8be2\u671f\u95f4\u4e0eMySQL\u670d\u52a1\u5668\u65ad\u5f00\u8fde\u63a5 &#8211; \u901a\u5e38\u7531\u7f51\u7edc\u4e0d\u7a33\u5b9a\u6216\u8d85\u65f6\u8bbe\u7f6e\u672a\u8003\u8651\u8de8\u533a\u57df\u8bbe\u7f6e\u4e2d\u5178\u578b\u7684\u9ad8\u5ef6\u8fdf\u8fde\u63a5\u5bfc\u81f4 \u9519\u8bef1045\uff1a\u62d2\u7edd\u7528\u6237\u8bbf\u95ee &#8211; \u5728\u5b89\u5168\u66f4\u65b0\u540e\u6216\u4e3b\u673a\u540d\u89e3\u6790\u672a\u6b63\u786e\u914d\u7f6e\u65e5\u6587\u5b57\u7b26\u7f16\u7801\u65f6\u7ecf\u5e38\u51fa\u73b0 \u9519\u8bef1129\uff1a\u7531\u4e8e\u591a\u6b21\u8fde\u63a5\u9519\u8bef\u4e3b\u673a\u88ab\u963b\u6b62 &#8211; \u5728DDoS\u4e8b\u4ef6\u671f\u95f4\u6216\u5e94\u7528\u7a0b\u5e8f\u672a\u80fd\u9ad8\u6548\u5904\u7406\u8fde\u63a5\u6c60\u65f6\u5e38\u89c1 \u9519\u8bef1226\uff1a\u7528\u6237\u8d85\u8fc7max_user_connections\u9650\u5236 &#8211; \u901a\u5e38\u5728\u6d41\u91cf\u9ad8\u5cf0\u671f\u6216\u8fde\u63a5\u9650\u5236\u672a\u9488\u5bf9\u4e9a\u6d32\u9ad8\u5cf0\u4f7f\u7528\u6a21\u5f0f\u4f18\u5316\u65f6\u53d1\u751f \u9519\u8bef2003\uff1a\u65e0\u6cd5\u8fde\u63a5\u5230MySQL\u670d\u52a1\u5668 &#8211; \u901a\u5e38\u4e0e\u9632\u706b\u5899\u914d\u7f6e\u6216\u65e5\u672cISP\u7279\u6709\u7684\u7f51\u7edc\u8def\u7531\u95ee\u9898\u6709\u5173 \u521d\u59cb\u8bca\u65ad\u6b65\u9aa4 \u5728\u6392\u67e5\u4e1c\u4eac\u670d\u52a1\u5668\u7684MySQL\u8fde\u63a5\u95ee\u9898\u65f6\uff0c\u5fc5\u987b\u9075\u5faa\u8003\u8651\u5230\u672c\u5730\u57fa\u7840\u8bbe\u65bd\u7279\u70b9\u7684\u7cfb\u7edf\u65b9\u6cd5\uff1a \u9a8c\u8bc1\u7f51\u7edc\u8fde\u63a5\uff1a ping your-mysql-host telnet your-mysql-host 3306 traceroute your-mysql-host netstat -tupln | grep mysql \u7279\u522b\u6ce8\u610f\u65e5\u672c\u5de5\u4f5c\u65f6\u95f4\uff089:00-18:00 JST\uff09\u7684\u5ef6\u8fdf\u6a21\u5f0f \u68c0\u67e5MySQL\u670d\u52a1\u72b6\u6001\uff1a systemctl status mysql journalctl -u mysql &#8211;since &#8220;1 hour ago&#8221; mysql -V show global status like &#8216;%connect%&#8217;; \u76d1\u63a7\u7cfb\u7edf\u8d44\u6e90\uff1a top [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-cn\/blog\/how-to-fix-mysql-connection-issues-on-tokyo-servers\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":11,"featured_media":26180,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[76],"tags":[],"class_list":["post-26184","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u89e3\u51b3\u4e1c\u4eac\u670d\u52a1\u5668\u4e0a\u7684MySQL\u8fde\u63a5\u95ee\u9898<\/title>\n<meta name=\"description\" content=\"\u4e1c\u4eac\u670d\u52a1\u5668MySQL\u8fde\u63a5\u95ee\u9898\u7684\u5168\u9762\u6545\u969c\u6392\u67e5\u6307\u5357\u3002\u4e86\u89e3\u5728\u65e5\u672c\u6570\u636e\u4e2d\u5fc3\u89e3\u51b3\u8d85\u65f6\u3001\u8eab\u4efd\u9a8c\u8bc1\u548c\u6027\u80fd\u95ee\u9898\u7684\u4e13\u4e1a\u89e3\u51b3\u65b9\u6848\u3002\" \/>\n<meta name=\"robots\" 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