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<h1 id="mac安装mysql"><a href="#mac安装mysql" class="headerlink" title="mac安装mysql"></a>mac安装mysql</h1><p>mac:<code>brew install mysql</code></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div></pre></td><td class="code"><pre><div class="line">==> Caveats</div><div class="line">We've installed your MySQL database without a root password. To secure it run:</div><div class="line"> mysql_secure_installation</div><div class="line"></div><div class="line">To connect run:</div><div class="line"> mysql -uroot</div><div class="line"></div><div class="line">To have launchd start mysql now and restart at login:</div><div class="line"> brew services start mysql</div><div class="line">Or, if you don't want/need a background service you can just run:</div><div class="line"> mysql.server start</div><div class="line">==> Summary</div><div class="line">🍺 /usr/local/Cellar/mysql/5.7.13: 13,344 files, 445.0M</div></pre></td></tr></table></figure>
<p>ubuntu:sudo apt-get-install mysql-server mysql-client<br>sudo apt-get-install libmysqlclient-dev# 为了支持python，有依赖</p>
<p><a href="http://stackoverflow.com/questions/1857861/libmysqlclient15-dev-on-macs" target="_blank" rel="external">#reference-How to get the MySQL C API libraries on OS X</a><br><a href="http://bbs.csdn.net/topics/310117511" target="_blank" rel="external">mysql-server与mysql-client有什么区别？</a></p>
<p><a href="http://blog.neten.de/posts/2014/01/27/install-mysql-using-homebrew/" target="_blank" rel="external">在 Mac 下用 Homebrew 安装 MySQL</a></p>
<h1 id="python支持"><a href="#python支持" class="headerlink" title="python支持"></a>python支持</h1><p>mac:<code>pip install mysqlclient</code>/<code>easy_install mysql-python</code><br>ubuntu:<code>pip install mysqlclient</code></p>
<p><a href="http://blog.csdn.net/a657941877/article/details/8944683" target="_blank" rel="external">#reference-MySQL database connector for Python</a><br><a href="https://www.zhihu.com/question/19869186/answer/98805967" target="_blank" rel="external">#reference-有哪些比较好的在 Python 中访问 MySQL 的类库？</a></p>
<h2 id="使用"><a href="#使用" class="headerlink" title="使用"></a>使用</h2><p>import mysqldb</p>
<h1 id="可能遇见的问题"><a href="#可能遇见的问题" class="headerlink" title="可能遇见的问题"></a>可能遇见的问题</h1><h2 id="连接远程服务器返回ERROR-2003-HY000-Can-39-t-connect-to-MySQL-server"><a href="#连接远程服务器返回ERROR-2003-HY000-Can-39-t-connect-to-MySQL-server" class="headerlink" title="连接远程服务器返回ERROR 2003 (HY000): Can't connect to MySQL server"></a>连接远程服务器返回<code>ERROR 2003 (HY000): Can't connect to MySQL server</code></h2><p>原因就是Mysql数据库的默认配置文件my.cnf（linux下）中的bind-address默认为127.0.0.1，即只允许本机访问，需要取消该限制。</p>
<p>ubuntu下使用<code>locate my.cnf</code>获取文件地址，如果返回<code>locate: can not stat ()</code>/var/lib/mlocate/mlocate.db’:<code>，执行</code>updatedb<code>解决。
[locate: can not stat ()</code>/var/lib/mlocate/mlocate.db’: No such file or directory](<a href="http://blog.csdn.net/w13770269691/article/details/6987384" target="_blank" rel="external">http://blog.csdn.net/w13770269691/article/details/6987384</a>)<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line">root@localhost:~# locate my.cnf</div><div class="line">/etc/alternatives/my.cnf</div><div class="line">/etc/mysql/my.cnf</div><div class="line">/etc/mysql/my.cnf.fallback</div><div class="line">/var/lib/dpkg/alternatives/my.cnf</div></pre></td></tr></table></figure></p>
<p>my.cnf一般在/etc/mysql下面，网络绝大部分资源都显示直接修改该文件。<br>root@localhost:~# cat /etc/alternatives/my.cnf<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div></pre></td><td class="code"><pre><div class="line">#</div><div class="line"># The MySQL database server configuration file.</div><div class="line">#</div><div class="line"># You can copy this to one of:</div><div class="line"># - "/etc/mysql/my.cnf" to set global options,</div><div class="line"># - "~/.my.cnf" to set user-specific options.</div><div class="line"># </div><div class="line"># One can use all long options that the program supports.</div><div class="line"># Run program with --help to get a list of available options and with</div><div class="line"># --print-defaults to see which it would actually understand and use.</div><div class="line">#</div><div class="line"># For explanations see</div><div class="line"># http://dev.mysql.com/doc/mysql/en/server-system-variables.html</div><div class="line"></div><div class="line">#</div><div class="line"># * IMPORTANT: Additional settings that can override those from this file!</div><div class="line"># The files must end with '.cnf', otherwise they'll be ignored.</div><div class="line">#</div><div class="line"></div><div class="line">!includedir /etc/mysql/conf.d/</div><div class="line">!includedir /etc/mysql/mysql.conf.d/</div></pre></td></tr></table></figure></p>
<p>根据<a href="http://askubuntu.com/questions/699903/why-etc-mysql-my-cnf-is-empty" target="_blank" rel="external">Why /etc/mysql/my.cnf is EMPTY</a>，配置文件（.cnf文件，一般是mysqld.cnf）locate在<br><code>/etc/mysql/conf.d/</code>和<code>/etc/mysql/mysql.conf.d/</code>中，我的mysqld.cnf地址是：<code>/etc/mysql/mysql.conf.d/mysqld.cnf</code></p>
<p>这才开始修改我的配置（mysqld.cnf）<br>修改前的配置文件为：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"># </div><div class="line"># Instead of skip-networking the default is now to listen only on </div><div class="line"># localhost which is more compatible and is not less secure. </div><div class="line">bind-address = 127.0.0.1</div></pre></td></tr></table></figure></p>
<p>修改后：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"># </div><div class="line"># Instead of skip-networking the default is now to listen only on </div><div class="line"># localhost which is more compatible and is not less secure. </div><div class="line"># bind-address = 127.0.0.1</div></pre></td></tr></table></figure></p>
<p>修改后并未立即生效，需要重启生效（可以找办法restart该服务，我是直接reboot）</p>
<p><a href="http://tk-zhang.iteye.com/blog/735467" target="_blank" rel="external">#reference-远程连接Mysql数据库问题(ERROR 2003 (HY000)</a><br><a href="http://www.jianshu.com/p/d501af0f127c" target="_blank" rel="external">#reference-MySQL数据库无法远程连接的解决办法</a><br><a href="http://www.2cto.com/database/201204/127400.html" target="_blank" rel="external">MySQL远程连接ERROR 2003 (HY000):Can’t connect to MySQL server on’XXXXX’的问题</a><br><a href="https://ihower.tw/rails/advanced-installation.html" target="_blank" rel="external">mac/ubuntu环境安装</a></p>
<h2 id="连接远程服务器返回ERROR-1130-HY000-is-not-allowed-to-connect-to-this-MySQL-server"><a href="#连接远程服务器返回ERROR-1130-HY000-is-not-allowed-to-connect-to-this-MySQL-server" class="headerlink" title="连接远程服务器返回ERROR 1130 (HY000): is not allowed to connect to this MySQL server"></a>连接远程服务器返回<code>ERROR 1130 (HY000): is not allowed to connect to this MySQL server</code></h2><p>服务器连接上mysql后， 授权myuser使用mypassword从任何主机连接到mysql服务器<br><code>GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;</code></p>
<p><a href="http://www.cnblogs.com/chutianyao/archive/2011/12/28/2304332.html" target="_blank" rel="external">mysql远程连接解决办法</a><br><a href="http://blog.csdn.net/rongjch/article/details/607124" target="_blank" rel="external">无法远程登入MySQL Server解决</a></p>
<h2 id="ERROR-1045-28000-Access-denied-for-user"><a href="#ERROR-1045-28000-Access-denied-for-user" class="headerlink" title="ERROR 1045 (28000): Access denied for user"></a>ERROR 1045 (28000): Access denied for user</h2><p>尝试从本地连接服务器：<br><code>!mysql -h'104.128.92.224' -u<%username> -p<%password></code><br>反馈<code>mysql: [Warning] Using a password on the command line interface can be insecure.</code><br>所以执行<code>mysql -h'104.128.92.224' -uroot</code><br>但返回<code>ERROR 1045 (28000): Access denied for user</code>，属于粗心，正确的执行方式为：<code>`mysql -h'104.128.92.224' -u<%username> -p</code>再输入密码即可。</p>
<p><a href="http://blog.csdn.net/zzq900503/article/details/14163769" target="_blank" rel="external">遇到问题—mysql账户密码以及权限的问题</a><br><a href="http://blog.csdn.net/nel0511/article/details/13091163" target="_blank" rel="external">完整过程解决 ERROR 1045 (28000)</a><br><a href="https://segmentfault.com/a/1190000002514402" target="_blank" rel="external">Ubuntu服务器常用配置－mysql数据库的安装</a></p>
<h2 id="log问题"><a href="#log问题" class="headerlink" title="log问题"></a>log问题</h2><p><a href="http://www.cnblogs.com/jackluo/archive/2013/03/04/2942500.html" target="_blank" rel="external">mysql错误日志分析</a><br><a href="http://blog.csdn.net/lxpbs8851/article/details/7892256" target="_blank" rel="external">IP address could not be resolved: Temporary failure in name resolution</a></p>
<h2 id="mysql连接到远程服务器的思考"><a href="#mysql连接到远程服务器的思考" class="headerlink" title="mysql连接到远程服务器的思考"></a>mysql连接到远程服务器的思考</h2><p>mysql-client连接到mysql-server，通过什么协议发起请求？是否安全？看起来不是https 的<br><a href="http://stackoverflow.com/questions/21386005/python-and-connecting-to-mysql-over-ssh" target="_blank" rel="external">Python and Connecting to MySQL over SSH</a><br><a href="http://stackoverflow.com/questions/12972867/connect-on-remote-mysql-database-through-python" target="_blank" rel="external">Connect on remote MySQL database through Python</a><br><a href="http://python.jobbole.com/87088/" target="_blank" rel="external">python模块paramiko与ssh</a></p>
<p>#<br><a href="http://dev.mysql.com/doc/" target="_blank" rel="external">Standard Mysql Documentation</a><br><a href="http://mysql-python.sourceforge.net/MySQLdb.html" target="_blank" rel="external">MySQLdb User’s Guide</a><br><a href="https://www.python.org/dev/peps/pep-0249/" target="_blank" rel="external">Python Database API Specification v2.0</a></p>
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