{"id":1080,"date":"2023-03-12T11:01:56","date_gmt":"2023-03-12T03:01:56","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1080"},"modified":"2023-04-29T11:41:59","modified_gmt":"2023-04-29T03:41:59","slug":"implement-mysql-read-write-separation-using-mycat","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/12\/implement-mysql-read-write-separation-using-mycat\/","title":{"rendered":"\u4f7f\u7528MyCat\u5b9e\u73b0MySQL\u8bfb\u5199\u5206\u79bb"},"content":{"rendered":"

\u8bf4\u660e<\/h2>\n

\u914d\u7f6eMyCat\u8bfb\u5199\u5206\u79bb\u524d\u9700\u8981\u5148\u914d\u7f6eMySQL\u7684\u4e3b\u4ece\u590d\u5236<\/p>\n

\u5b98\u65b9\u7f51\u7ad9\uff1ahttp:\/\/www.mycat.org.cn\/<\/a><\/p>\n

<\/p>\n

\u914d\u7f6eMyCat\u8d26\u53f7\u5bc6\u7801\u548c\u6570\u636e\u5e93\u540d<\/h2>\n

MyCat\u4f5c\u4e3a\u6570\u636e\u5e93\u7684\u4e2d\u95f4\u4ef6\uff0c\u5bf9\u4e8e\u4e0a\u5c42\u5e94\u7528\u6765\u8bf4\uff0c\u5c31\u662f\u4e00\u4e2a\u6570\u636e\u5e93\u3002\u56e0\u6b64\u9700\u8981\u914d\u7f6e\u6570\u636e\u5e93\u7684\u7528\u6237\u540d\uff0c\u5bc6\u7801\uff0c\u6570\u636e\u5e93\u540d\uff0c\u4ee5\u53ca\u8bfb\u5199\u6743\u9650\u3002<\/p>\n

\u4e0b\u9762\u662fMyCat\u7684\u9ed8\u8ba4\u914d\u7f6e\uff08server.xml\uff09\uff1a<\/p>\n

<user name="root" defaultAccount="true">\n    <property name="password">123456<\/property>\n    <property name="schemas">TESTDB<\/property>\n\n    <!-- \u8868\u7ea7 DML \u6743\u9650\u8bbe\u7f6e -->\n    <!--         \n    <privileges check="false">\n        <schema name="TESTDB" dml="0110" >\n            <table name="tb01" dml="0000"><\/table>\n            <table name="tb02" dml="1111"><\/table>\n        <\/schema>\n    <\/privileges>        \n     -->\n<\/user>\n\n<user name="user">\n    <property name="password">user<\/property>\n    <property name="schemas">TESTDB<\/property>\n    <property name="readOnly">true<\/property>\n<\/user><\/code><\/pre>\n
user\u8282\u70b9\u914d\u7f6e\u7528\u6237\u4fe1\u606f\uff0c\u8be6\u7ec6\u8bf4\u660e\u5982\u4e0b\uff1a<\/p>\n
    \n
  • name<\/code> \u767b\u5f55\u7684\u7528\u6237\u540d\uff0c\u4e5f\u5c31\u662f\u8fde\u63a5Mycat\u7684\u7528\u6237\u540d<\/li>\n
  • password<\/code> \u767b\u5f55\u7684\u5bc6\u7801\uff0c\u4e5f\u5c31\u662f\u8fde\u63a5Mycat\u7684\u5bc6\u7801<\/li>\n
  • schemas<\/code> \u6570\u636e\u5e93\u540d\uff0c\u8fd9\u91cc\u4f1a\u548cschema.xml<\/code>\u4e2d\u7684\u914d\u7f6e\u5173\u8054\uff0c\u591a\u4e2a\u7528\u9017\u53f7\u5206\u5f00\uff0c\u4f8b\u5982\u8fd9\u4e2a\u7528\u6237\u9700\u8981\u7ba1\u7406\u4e24\u4e2a\u6570\u636e\u5e93db1,db2\uff0c\u5219\u914d\u7f6edb1,dbs<\/li>\n<\/ul>\n
    \u8fd9\u91cc\u4fee\u6539\u5982\u4e0b(\u53ea\u9700\u8981\u6539\u52a8user\u8282\u70b9\u4fe1\u606f\u5373\u53ef)\uff1a<\/p>\n
    <user name="root">\n  <property name="password">123456<\/property>\n  <property name="schemas">db_test<\/property>\n<\/user><\/code><\/pre>\n
    \u5728 schema.xml \u6587\u4ef6\u4e2d\u914d\u7f6e\u8bfb\u5199\u5206\u79bb<\/h2>\n
    <?xml version="1.0"?>\n<!DOCTYPE mycat:schema SYSTEM "schema.dtd">\n<mycat:schema xmlns:mycat="http:\/\/io.mycat\/">\n  <!-- \u6570\u636e\u5e93\u914d\u7f6e\uff0c\u4e0eserver.xml\u4e2d\u7684\u6570\u636e\u5e93\u5bf9\u5e94 -->\n  <schema name="db_test" checkSQLschema="false" sqlMaxLimit="100" dataNode="db_node"><\/schema>\n  <!-- \u5206\u7247\u914d\u7f6e -->\n  <dataNode name="db_node" dataHost="db_host" database="db_test" \/>\n  <!-- \u7269\u7406\u6570\u636e\u5e93\u914d\u7f6e -->\n  <dataHost name="db_host" maxCon="1000" minCon="10" balance="3"\n    writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">\n    <heartbeat>select user()<\/heartbeat>\n    <!-- can have multi write hosts -->\n    <writeHost host="hostM1" url="mysql_master:3306" user="root" password="apple">\n      <!-- can have multi read hosts -->\n      <readHost host="hostS2" url="mysql_slaver:3306" user="root" password="apple" \/>\n    <\/writeHost>\n  <\/dataHost>\n<\/mycat:schema><\/code><\/pre>\n
    \u8fd9\u91cc\u6709\u51e0\u4e2a\u914d\u7f6e\u9700\u8981\u8bf4\u660e\u4e0b\uff1a<\/p>\n
      \n
    • sqlMaxLimit<\/code>\uff0c\u914d\u7f6e\u9ed8\u8ba4\u67e5\u8be2\u6570\u91cf<\/li>\n
    • database<\/code>\uff0c\u771f\u5b9e\u6570\u636e\u5e93\u540d<\/li>\n
    • balance="0"<\/code>\uff0c\u4e0d\u5f00\u542f\u8bfb\u5199\u5206\u79bb\u673a\u5236\uff0c\u6240\u6709\u8bfb\u64cd\u4f5c\u90fd\u53d1\u9001\u5230\u5f53\u524d\u53ef\u7528\u7684writeHost<\/code>\u4e0a<\/li>\n
    • balance="1"<\/code>\uff0c\u5168\u90e8\u7684 readHost \u4e0e stand by writeHost \u53c2\u4e0e select \u8bed\u53e5\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u7b80\u5355\u7684\u8bf4\uff0c\u5f53\u53cc\u4e3b\u53cc\u4ece\u6a21\u5f0f(M1 ->S1\uff0c M2->S2\uff0c\u5e76\u4e14 M1 \u4e0e M2 \u4e92\u4e3a\u4e3b\u5907)\uff0c\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0cM2,S1,S2 \u90fd\u53c2\u4e0e select \u8bed\u53e5\u7684\u8d1f\u8f7d\u5747\u8861<\/li>\n
    • balance="2"<\/code>\uff0c\u6240\u6709\u8bfb\u64cd\u4f5c\u90fd\u968f\u673a\u7684\u5728 writeHost\u3001readhost \u4e0a\u5206\u53d1<\/li>\n
    • balance="3"<\/code>\uff0c\u6240\u6709\u8bfb\u8bf7\u6c42\u968f\u673a\u7684\u5206\u53d1\u5230 wiriterHost \u5bf9\u5e94\u7684 readhost \u6267\u884c\uff0cwriterHost \u4e0d\u8d1f\u62c5\u8bfb\u538b\u529b\uff0c\u6ce8\u610fbalance=3<\/code>\u53ea\u5728 1.4 \u53ca\u5176\u4ee5\u540e\u7248\u672c\u6709\uff0c1.3 \u6ca1\u6709<\/li>\n
    • writeType="0"<\/code>\uff0c\u6240\u6709\u5199\u64cd\u4f5c\u53d1\u9001\u5230\u914d\u7f6e\u7684\u7b2c\u4e00\u4e2a writeHost\uff0c\u7b2c\u4e00\u4e2a\u6302\u4e86\u5207\u5230\u8fd8\u751f\u5b58\u7684\u7b2c\u4e8c\u4e2awriteHost\uff0c\u91cd\u65b0\u542f\u52a8\u540e\u5df2\u5207\u6362\u540e\u7684\u4e3a\u51c6\uff0c\u5207\u6362\u8bb0\u5f55\u5728\u914d\u7f6e\u6587\u4ef6\u4e2ddnindex.properties<\/code><\/li>\n
    • writeType="1"<\/code>\uff0c\u6240\u6709\u5199\u64cd\u4f5c\u90fd\u968f\u673a\u7684\u53d1\u9001\u5230\u914d\u7f6e\u7684 writeHost<\/li>\n
    • writeType="2"<\/code>\uff0c\u6ca1\u5b9e\u73b0<\/li>\n
    • switchType="-1"<\/code>\uff0c\u8868\u793a\u4e0d\u81ea\u52a8\u5207\u6362<\/li>\n
    • switchType="1"<\/code>\uff0c\u9ed8\u8ba4\u503c\uff0c\u81ea\u52a8\u5207\u6362<\/li>\n
    • switchType="2"<\/code>\uff0c\u57fa\u4e8eMySQL \u4e3b\u4ece\u540c\u6b65\u7684\u72b6\u6001\u51b3\u5b9a\u662f\u5426\u5207\u6362<\/li>\n<\/ul>\n
      \u542f\u52a8MyCat<\/h2>\n
      \u5728MyCat\u6240\u5728\u7684\u670d\u52a1\u5668\u542f\u52a8<\/p>\n
      .\/mycat start\nmysql -uroot -p123456 -P8066 -h127.0.0.1\n#stop\n.\/mycat stop<\/code><\/pre>\n
      \u8fde\u4e0a\u4e4b\u540e\u8ddf\u666e\u901a\u7684MySQL\u4e00\u6a21\u4e00\u6837<\/p>\n
      \u4f7f\u7528Navicat\u8fde\u63a5MyCat<\/h2>\n
      \u5728\u5916\u7f51(\u76f8\u5bf9\u865a\u62df\u673a\u800c\u8a00)\u8bbf\u95eeMyCat\uff0c\u9700\u8981\u914d\u7f6eip\u767d\u540d\u5355\u3002<\/p>\n
      \u914d\u7f6e\u6587\u4ef6\u5728server.xml<\/code>\u4e2d<\/p>\n
      <!-- \u5168\u5c40SQL\u9632\u706b\u5899\u8bbe\u7f6e -->\n<firewall>\n  <whitehost>\n    <host host="192.168.10.8" user="root"\/>\n    <host host="127.0.0.1" user="root"\/>\n  <\/whitehost>\n  <blacklist check="false">\n  <\/blacklist>\n<\/firewall><\/code><\/pre>\n
      \u8fd9\u91cc192.168.10.8<\/code>\u4e3a\u6211\u672c\u673a\u76f8\u5bf9\u865a\u62df\u673a\u7684ip\u5730\u5740\uff0c\u8fd9\u91cc\u8981\u8bf4\u660e\u4e0b\uff0c\u5982\u679c\u914d\u7f6e\u4e86ip\u767d\u540d\u5355\uff0c\u5219127.0.0.1<\/code>\u4e5f\u662f\u8981\u52a0\u4e0a\u624d\u80fd\u672c\u5730\u8bbf\u95ee\u7684\uff0c\u4e0d\u7136\u4f1a\u88ab\u62d2\u7edd\u6389\u3002<\/p>\n
      \u6d4b\u8bd5<\/h2>\n
      \uff081\uff09\u901a\u8fc7\u5728MyCat\u4e2d\u63d2\u5165\u6570\u636e\u68c0\u6d4b\u662f\u5426\u4e3b\u4ece\u590d\u5236\u914d\u7f6e\u6210\u529f
      \n\uff082\uff09\u901a\u8fc7\u4fee\u6539\u4ece\u6570\u636e\u5e93\u7684\u6570\u636e\u6765\u9a8c\u8bc1\u662f\u5426\u8bfb\u5199\u8fdb\u884c\u5206\u79bb<\/p>\n
      \u53ef\u4ee5\u770b\u5230\uff0cMyCat\u8bfb\u53d6\u7684\u662f\u4ece\u5e93\u7684\u6570\u636e\u3002\u8bf4\u660eMyCat\u8bfb\u5199\u5206\u79bb\u529f\u80fd\u5df2\u7ecf\u5b9e\u73b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u8bf4\u660e \u914d\u7f6eMyCat\u8bfb\u5199\u5206\u79bb\u524d\u9700\u8981\u5148\u914d\u7f6eMySQL\u7684\u4e3b\u4ece\u590d\u5236 \u5b98\u65b9\u7f51\u7ad9\uff1ahttp:\/\/www.mycat.or […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[297],"class_list":["post-1080","post","type-post","status-publish","format-standard","hentry","category-mysql","tag-mycat"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1080","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1080"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1080\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}