{"id":131828,"date":"2020-07-05T03:39:30","date_gmt":"2020-07-04T19:39:30","guid":{"rendered":"http:\/\/4563.org\/?p=131828"},"modified":"2020-07-05T03:39:30","modified_gmt":"2020-07-04T19:39:30","slug":"mysql%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e4%b9%8bmax_connections%e9%85%8d%e7%bd%ae%e5%8f%82%e6%95%b0%e6%b5%85%e6%9e%90","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=131828","title":{"rendered":"MySQL\u6027\u80fd\u4f18\u5316\u4e4bmax_connections\u914d\u7f6e\u53c2\u6570\u6d45\u6790"},"content":{"rendered":"

\u672c\u6587\u4e3b\u8981\u6574\u7406\u4e86 MySQL \u53c2\u6570\u4e2d max_connections \u914d\u7f6e\u53c2\u6570\u7684\u6d45\u6790\uff0c\u8be5\u53c2\u6570\u5728 MySQL \u4e2d\u662f\u7528\u6765\u8bbe\u7f6e\u6700\u5927\u8fde\u63a5\uff08\u7528\u6237\uff09\u6570\u3002\u6bcf\u4e2a\u8fde\u63a5 MySQL \u7684\u7528\u6237\u5747\u4f5c\u4e3a\u4e00\u4e2a\u8fde\u63a5\uff0cmax_connections \u7684\u9ed8\u8ba4\u503c\u4e3a100\uff0c\u672c\u6587\u5c06\u8bb2\u89e3\u6b64\u53c2\u6570\u7684\u8be6\u7ec6\u4f5c\u7528\u4e0e\u6027\u80fd\u5f71\u54cd\u3002<\/p>\n

<\/a>\u4e0emax_connections\u6709\u5173\u7684\u7279\u6027<\/h3>\n

MySQL \u65e0\u8bba\u5982\u4f55\u90fd\u4f1a\u4fdd\u7559\u4e00\u4e2a\u7528\u4e8e\u7ba1\u7406\u5458\uff08SUPER\uff09\u767b\u9646\u7684\u8fde\u63a5\uff0c\u7528\u4e8e\u7ba1\u7406\u5458\u8fde\u63a5\u6570\u636e\u5e93\u8fdb\u884c\u7ef4\u62a4\u64cd\u4f5c\uff0c\u5373\u4f7f\u5f53\u524d\u8fde\u63a5\u6570\u5df2\u7ecf\u8fbe\u5230\u4e86 max_connections\uff0c\u56e0\u6b64 MySQL \u7684\u5b9e\u9645\u6700\u5927\u53ef\u8fde\u63a5\u6570\u4e3a max_connections+1\u3002<\/p>\n

\u8fd9\u4e2a\u53c2\u6570\u5b9e\u9645\u8d77\u4f5c\u7528\u7684\u6700\u5927\u503c\uff08\u5b9e\u9645\u6700\u5927\u53ef\u8fde\u63a5\u6570\uff09\u4e3a 16384\uff0c\u5373\u8be5\u53c2\u6570\u6700\u5927\u503c\u4e0d\u80fd\u8d85\u8fc7 16384\uff0c\u5373\u4f7f\u8d85\u8fc7\u4e5f\u4ee5 16384 \u4e3a\u51c6\u3002\u589e\u52a0 max_connections \u53c2\u6570\u7684\u503c\uff0c\u4e0d\u4f1a\u5360\u7528\u592a\u591a\u7cfb\u7edf\u8d44\u6e90\u3002\u7cfb\u7edf\u8d44\u6e90\uff08CPU\u3001\u5185\u5b58\uff09\u7684\u5360\u7528\u4e3b\u8981\u53d6\u51b3\u4e8e\u67e5\u8be2\u7684\u5bc6\u5ea6\u3001\u6548\u7387\u7b49\uff0c\u8be5\u53c2\u6570\u8bbe\u7f6e\u8fc7\u5c0f\u7684\u6700\u660e\u663e\u7279\u5f81\u662f\u51fa\u73b0 \u201dToo many connections\u201d \u9519\u8bef\u3002<\/p>\n

<\/a>\u5982\u4f55\u67e5\u770b\u5f53\u524d MySQL \u7684max_connections\u7684\u503c\uff1a<\/h3>\n
\n\n\n
\n
1<\/span>
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4<\/span>
5<\/span>
6<\/span>
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8<\/span>
9<\/span>
<\/pre>\n<\/td>\n
\n
show variables like "max_connections";<\/span>
<\/span>
\u663e\u793a\u7684\u7ed3\u679c\u5982\u4e0b\u683c\u5f0f<\/span>
<\/span>
+-----------------+-------+<\/span>
| Variable_name   | Value |<\/span>
+-----------------+-------+<\/span>
| max_connections | 100   |<\/span>
+-----------------+-------+<\/span>
<\/pre>\n<\/td>\n<\/tr>\n<\/table>\n<\/figure>\n
<\/a>\u4fee\u6539max_connections\u7684\u503c<\/h3>\n
\n\n\n
\n
1<\/span>
<\/pre>\n<\/td>\n
\n
set global max_connections = 1000;<\/span>
<\/pre>\n<\/td>\n<\/tr>\n<\/table>\n<\/figure>\n
\u6b64\u8bbe\u7f6e\u65b9\u6cd5\u4f1a\u7acb\u5373\u751f\u6548\uff0c\u4f46\u662f\u5f53mysql\u91cd\u542f\u65f6\u8fd9\u4e2a\u8bbe\u7f6e\u4f1a\u5931\u6548\uff0c\u66f4\u597d\u7684\u529e\u6cd5\u662f\u4fee\u6539 mysql \u7684ini\u914d\u7f6e\u6587\u4ef6 my.ini\u3002<\/p>\n
\n\n\n
\n
1<\/span>
2<\/span>
3<\/span>
4<\/span>
5<\/span>
<\/pre>\n<\/td>\n
\n
vim /etc/my.ini<\/span>
<\/span>
# mysqld \u4e0b\u4fee\u6539\u6216\u6dfb\u52a0\u6b64\u914d\u7f6e<\/span>
[mysqld]<\/span>
max_connections=1000<\/span>
<\/pre>\n<\/td>\n<\/tr>\n<\/table>\n<\/figure>\n
\u8fd9\u6837\u4fee\u6539\u4e4b\u540e\uff0c\u5373\u4fbf\u91cd\u542fmysql\u4e5f\u4f1a\u9ed8\u8ba4\u8f7d\u5165\u8fd9\u4e2a\u914d\u7f6e\u3002<\/p>\n
\u603b\u4f53\u6765\u8bf4\uff0c\u8be5\u53c2\u6570\u5728\u670d\u52a1\u5668\u8d44\u6e90\u591f\u7528\u7684\u60c5\u51b5\u4e0b\u5e94\u8be5\u5c3d\u91cf\u8bbe\u7f6e\u5927\uff0c\u4ee5\u6ee1\u8db3\u591a\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u8fde\u63a5\u7684\u9700\u6c42\u3002\u5426\u5219\u5c06\u4f1a\u51fa\u73b0\u7c7b\u4f3c\u201dToo many connections\u201d\u7684\u9519\u8bef\u3002
\u4e00\u822c\u60c5\u51b5\u4e0b\u6839\u636e\u540c\u65f6\u5728\u7ebf\u4eba\u6570\u8bbe\u7f6e\u4e00\u4e2a\u6bd4\u8f83\u7efc\u5408\u7684\u6570\u5b57\uff0c\u6211\u4eec\u8bbe\u7f6e\u7684\u662f10000\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u672c\u6587\u4e3b\u8981\u6574\u7406\u4e86 MySQL \u53c2\u6570\u4e2d…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/131828"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=131828"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/131828\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=131828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=131828"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=131828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}