用mycat作讀寫分離：基於 MySQL主從複製

<div id="article_content" class="article_content tracking-ad" data-mod="popu_307" data-dsm="post">html

mycat是最近很火的一款國人發明的分佈式數據庫中間件，它是基於阿里的cobar的基礎上進行開發的  搭建以前咱們先要配置mysql的主從複製，這個過程很長，我這裏就不寫了，有興趣的能夠看看我寫的這篇文章。 <a target="_blank" href="http://blog.csdn.net/u011325787/article/details/51422204">linux centos下mysql數據庫的主從複製環境搭建</a> mycat在應用當中的做用能夠看下圖 <img src="http://img.blog.csdn.net/20160516110849013" alt=""> mycat可讓程序員只須要關心業務代碼的編寫，而不用擔憂後端數據庫集羣的負載均衡，讀寫分離，分庫分表的數據分片邏輯的編寫，只要直接鏈接mycat就能夠了 首先咱們準備一臺乾淨的centos機器，安裝好jdk <img src="http://img.blog.csdn.net/20160516111642055" alt=""> 解壓mycat的安裝包到/user/local/下 <img src="http://img.blog.csdn.net/20160516112117151" alt=""> 設置mycat的環境變量 <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 1728px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_1" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_1" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=1&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">vi /etc/profile  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_1_6824718" name="code" class="html" style="display: none;"> vi /etc/profile</pre> <img src="http://img.blog.csdn.net/20160516112240323" alt=""> 使配置文件當即生效 <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 1914px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_2" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_2" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=2&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">source /etc/profile  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_2_2648024" name="code" class="html" style="display: none;">source /etc/profile</pre> 進入mycat的配置文件目錄 <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 2071px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_3" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_3" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=3&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">cd /usr/local/mycat/conf/  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_3_9442439" name="code" class="html" style="display: none;">cd /usr/local/mycat/conf/</pre><div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 2140px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_4" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_4" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=4&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">vi schema.xml  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_4_2964451" name="code" class="html" style="display: none;">vi schema.xml</pre> 這個配置文件主要是用來配置數據庫節點，邏輯表等等東西的 <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 2297px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_5" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_5" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=5&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt"><?xml version="1.0"?>  </li><li class=""><!DOCTYPE mycat:schema SYSTEM "schema.dtd">  </li><li class="alt"><mycat:schema xmlns:mycat="http://org.opencloudb/">  </li><li class="">      </li><li class="alt">      </li><li class="">    <schema name="pcx_schema" checkSQLschema="false" sqlMaxLimit="100" dataNode="pcxNode"></schema>  </li><li class="alt">  </li><li class="">      </li><li class="alt">    <dataNode name="pcxNode" dataHost="dtHost" database="pcx" />  </li><li class="">  </li><li class="alt">      </li><li class="">      </li><li class="alt">      </li><li class="">      </li><li class="alt">      </li><li class="">    <dataHost name="dtHost" maxCon="500" minCon="20" balance="1"  </li><li class="alt">        writeType="0" dbType="mysql" dbDriver="native" switchType="2" slaveThreshold="100">  </li><li class="">          </li><li class="alt">        <heartbeat>show slave status</heartbeat>  </li><li class="">          </li><li class="alt">          </li><li class="">        <writeHost host="hostMaster" url="192.168.1.6:3306" user="root" password="root" />  </li><li class="alt">        <writeHost host="hostSlave" url="192.168.1.7:3306" user="root" password="root" />  </li><li class="">    </dataHost>  </li><li class="alt">      </li><li class="">  </li><li class="alt"></mycat:schema>  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_5_9725847" name="code" class="html" style="display: none;"><?xml version="1.0"?> <!DOCTYPE mycat:schema SYSTEM "schema.dtd"> <mycat:schema xmlns:mycat="http://org.opencloudb/">mysql

&lt;!-- 定義MyCat的邏輯庫 --&gt;
&lt;schema name="pcx_schema" checkSQLschema="false" sqlMaxLimit="100" dataNode="pcxNode"&gt;&lt;/schema&gt;

&lt;!-- 定義MyCat的數據節點 --&gt;
&lt;dataNode name="pcxNode" dataHost="dtHost" database="pcx" /&gt;


&lt;!-- 定義數據主機dtHost，鏈接到MySQL讀寫分離集羣 ,schema中的每個dataHost中的host屬性值必須惟一--&gt;
&lt;!-- dataHost實際上配置就是後臺的數據庫集羣，一個datahost表明一個數據庫集羣 --&gt;
&lt;!-- balance="1"，所有的readHost與stand by writeHost參與select語句的負載均衡--&gt;
&lt;!-- writeType="0"，全部寫操做發送到配置的第一個writeHost，這裏就是咱們的hostmaster，第一個掛了切到還生存的第二個writeHost--&gt;
&lt;dataHost name="dtHost" maxCon="500" minCon="20" balance="1"
	writeType="0" dbType="mysql" dbDriver="native" switchType="2" slaveThreshold="100"&gt;
	&lt;!--心跳檢測 --&gt;
	&lt;heartbeat&gt;show slave status&lt;/heartbeat&gt;
	
	&lt;!--配置後臺數據庫的IP地址和端口號，還有帳號密碼 --&gt;
	&lt;writeHost host="hostMaster" url="192.168.1.6:3306" user="root" password="root" /&gt;
	&lt;writeHost host="hostSlave" url="192.168.1.7:3306" user="root" password="root" /&gt;
&lt;/dataHost&gt;

</mycat:schema> </pre>接下來配置用戶權限,系統變量linux

<div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 2887px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_6" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_6" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=6&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">vi server.xml  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_6_5091804" name="code" class="html" style="display: none;"> vi server.xml</pre><div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 2956px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_7" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_7" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=7&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt"><?xml version="1.0" encoding="UTF-8"?>  </li><li class="">  </li><li class=""><!DOCTYPE mycat:server SYSTEM "server.dtd">  </li><li class="alt"><mycat:server xmlns:mycat="http://org.opencloudb/">  </li><li class="">    <system>  </li><li class="alt">      </li><li class="">    <property name="defaultSqlParser">druidparser</property>  </li><li class="alt">    <property name="charset">utf8mb4</property>  </li><li class="">    </system>  </li><li class="alt">  </li><li class="">      </li><li class="alt">                              </li><li class="">      </li><li class="alt">    <user name="user1">  </li><li class="">        <property name="password">root</property>  </li><li class="alt">        <property name="schemas">pcx_schema</property>  </li><li class="">    </user>  </li><li class="alt">                              </li><li class="">      </li><li class="alt">    <user name="user2">  </li><li class="">        <property name="password">root</property>  </li><li class="alt">        <property name="schemas">pcx_schema</property>  </li><li class="">        <property name="readOnly">true</property>  </li><li class="alt">    </user>  </li><li class="">  </li><li class="alt"></mycat:server>  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_7_8613815" name="code" class="html" style="display: none;"><?xml version="1.0" encoding="UTF-8"?>  <!DOCTYPE mycat:server SYSTEM "server.dtd"> <mycat:server xmlns:mycat="http://org.opencloudb/"> <system>  <property name="defaultSqlParser">druidparser</property> <property name="charset">utf8mb4</property> </system>程序員

&lt;!-- 用戶1，對應的MyCat邏輯庫鏈接到的數據節點對應的主機爲主從複製集羣 --&gt;
&lt;user name="user1"&gt;
	&lt;property name="password"&gt;root&lt;/property&gt;
	&lt;property name="schemas"&gt;pcx_schema&lt;/property&gt;
&lt;/user&gt;
						
&lt;!-- 用戶2，只讀權限--&gt;
&lt;user name="user2"&gt;
	&lt;property name="password"&gt;root&lt;/property&gt;
	&lt;property name="schemas"&gt;pcx_schema&lt;/property&gt;
	&lt;property name="readOnly"&gt;true&lt;/property&gt;
&lt;/user&gt;

</mycat:server> </pre>修改防火牆,容許mycat的端口被外界訪問sql

<div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 3654px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_8" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_8" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=8&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">vi /etc/sysconfig/iptables  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_8_1820182" name="code" class="html" style="display: none;"> vi /etc/sysconfig/iptables</pre> <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 3776px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_9" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_9" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=9&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">-A INPUT -m state --state NEW -m tcp -p tcp --dport 8066 -j ACCEPT  </li><li class="">-A INPUT -m state --state NEW -m tcp -p tcp --dport 9066 -j ACCEPT  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_9_6978395" name="code" class="html" style="display: none;">-A INPUT -m state --state NEW -m tcp -p tcp --dport 8066 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 9066 -j ACCEPT</pre> 而後重啓防火牆 <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 3951px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_10" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_10" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=10&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">service iptables restart  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_10_2136609" name="code" class="html" style="display: none;">service iptables restart</pre> <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 4073px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_11" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_11" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=11&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">cd /usr/local/mycat/bin/  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_11_7818210" name="code" class="html" style="display: none;">cd /usr/local/mycat/bin/</pre> 進入mycat的腳本目錄 <img src="http://img.blog.csdn.net/20160516130746419" alt=""> 運行啓動命令 <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 4464px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_12" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_12" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=12&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">./mycat start  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_12_2976424" name="code" class="html" style="display: none;"> ./mycat start</pre> 咱們可使用mysql客戶端鏈接或者navicat來鏈接mycat <img src="http://img.blog.csdn.net/20160516130911468" alt=""> <img src="http://img.blog.csdn.net/20160516131020917" alt=""> 接下來咱們測試一下讀寫分離 進入mycat的日誌目錄 <div class="dp-highlighter bg_html"><div class="bar"><div class="tools">[html] <a href="#" class="ViewSource" title="view plain" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;" target="_blank">view plain</a> <a href="#" class="CopyToClipboard" title="copy" onclick="dp.sh.Toolbar.Command('CopyToClipboard',this);return false;" target="_blank">copy</a><div style="position: absolute; left: 763px; top: 5532px; width: 18px; height: 18px; z-index: 99;"><embed id="ZeroClipboardMovie_13" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="18" height="18" name="ZeroClipboardMovie_13" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=13&width=18&height=18" wmode="transparent"></div> <a href="#" class="PrintSource" title="print" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;" target="_blank">print</a><a href="#" class="About" title="?" onclick="dp.sh.Toolbar.Command('About',this);return false;" target="_blank">?</a></div></div><ol start="1" class="dp-xml"><li class="alt">cd /usr/local/mycat/logs/  </li></ol></div><pre code_snippet_id="1685092" snippet_file_name="blog_20160516_13_8658025" name="code" class="html" style="display: none;">cd /usr/local/mycat/logs/</pre> <img src="http://img.blog.csdn.net/20160516131316442" alt=""> 先測試一下讀操做 咱們鏈接到mycat發送一句select *命令試試 <img src="http://img.blog.csdn.net/20160516132451739" alt=""> <img src="http://img.blog.csdn.net/20160516132501239" alt=""> 能夠看到select 操做被路由到了192.168.1.7也就是咱們的slave節點 那麼咱們執行屢次看看 <img src="http://img.blog.csdn.net/20160516132631991" alt=""> 結果仍是被路由到了讀節點 接下來咱們測試一下寫操做 <img src="http://img.blog.csdn.net/20160516133047691" alt=""> <img src="http://img.blog.csdn.net/20160516133108560" alt=""> 可見插入被路由到了master節點 最後咱們看看master的數據是否被同步到slave <img src="http://img.blog.csdn.net/20160516133316751" alt=""> 記錄成功的同步過來了，可見讀寫分離搭建成功。數據庫

</div>express