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<p>17年正式的写了一年的代码，踩过一些坑，远远不够，项目经验还是比较缺乏，由于平时项目需求比较紧迫，加上平时比较贪玩，对于一些原理了解的不够深刻，故此打个标记，对目前项目当中所用到的技术栈进行深入理解消化，争取在18年对python的技术栈有所深入研究。</p>
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<p>《Docker进阶与实战》笔记</p>
<h2 id="Docker基础概念"><a href="#Docker基础概念" class="headerlink" title="Docker基础概念"></a>Docker基础概念</h2><h2 id="Docker容器原理"><a href="#Docker容器原理" class="headerlink" title="Docker容器原理"></a>Docker容器原理</h2><h2 id="Docker镜像"><a href="#Docker镜像" class="headerlink" title="Docker镜像"></a>Docker镜像</h2><h2 id="仓库"><a href="#仓库" class="headerlink" title="仓库"></a>仓库</h2><h2 id="Docker网络"><a href="#Docker网络" class="headerlink" title="Docker网络"></a>Docker网络</h2><h2 id="Docker卷管理"><a href="#Docker卷管理" class="headerlink" title="Docker卷管理"></a>Docker卷管理</h2><h2 id="Docker-API"><a href="#Docker-API" class="headerlink" title="Docker API"></a>Docker API</h2>
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<h3 id="List问题"><a href="#List问题" class="headerlink" title="List问题"></a>List问题</h3><h1 id="反转list（三种方法）"><a href="#反转list（三种方法）" class="headerlink" title="反转list（三种方法）"></a>反转list（三种方法）</h1><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></pre></td><td class="code"><pre><div class="line">list_a = [1,2,3,4,5,6,7,8,9] </div><div class="line">reverse_list = list(reversed(list_a)) # 利用原生reversed</div><div class="line"></div><div class="line"># 利用sorted（sorted方法仅适用于有序列表）</div><div class="line">reverse_list = sorted(list_a,cmp=None, key=None, reverse=True) </div><div class="line"></div><div class="line">reverse_list = list_a[::-1] # 利用切片</div></pre></td></tr></table></figure>
<h1 id="切片list"><a href="#切片list" class="headerlink" title="切片list"></a>切片list</h1><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">lst = [1,2,3,5,2,5,67,21]</div><div class="line"># 以三个为一组切片</div><div class="line">res_list = [lst[i:i+3] for i in range(0,len(lst),3)]</div><div class="line"></div><div class="line">res_list:[[1,2,3],[5,2,5],[67,21]]</div></pre></td></tr></table></figure>
<h1 id="取list交集-并集-差集"><a href="#取list交集-并集-差集" class="headerlink" title="取list交集 并集 差集"></a>取list交集 并集 差集</h1><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></pre></td><td class="code"><pre><div class="line">a = [1,2,3]</div><div class="line">b = [2,3,4]</div><div class="line">intersection = [v for v in a if v in b] # 交集</div><div class="line">intersection = list(set(a).intersection(set(b))) # 交集</div><div class="line"></div><div class="line">union = list(set(a+b)) # 并集</div><div class="line">union = list(set(a).union(set(b))) # 并集</div><div class="line"></div><div class="line">different = [v for v in a if v not in b] # 从a数组查找与b数组不一样的数据</div><div class="line">different = list(set(a).difference(set(b)))</div></pre></td></tr></table></figure>
<h3 id="标准库的使用"><a href="#标准库的使用" class="headerlink" title="标准库的使用"></a>标准库的使用</h3><h1 id="random"><a href="#random" class="headerlink" title="random"></a>random</h1><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></pre></td><td class="code"><pre><div class="line"># 生成指定数字间浮点数</div><div class="line">random.uniform(10, 20) 闭区间</div><div class="line"></div><div class="line"># 生成指定数字键整数</div><div class="line">random.randint(10, 20) 闭区间</div><div class="line"></div><div class="line"># 随机生成指定区间内偶数</div><div class="line">random.randrange(0, 101, 2) randrange第三个参数为step个数</div><div class="line"></div><div class="line"># 随机选择字符</div><div class="line">random.choice('abcdefg&#%^*f')</div><div class="line"></div><div class="line"># 随机选择指定个数字符</div><div class="line">random.sample('abcdefghij',3)</div><div class="line"></div><div class="line"># 洗牌（打乱排序）</div><div class="line">random.shuffle([1, 2, 3, 4, 5, 6])</div></pre></td></tr></table></figure>
<h1 id="re"><a href="#re" class="headerlink" title="re"></a>re</h1><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line"></div><div class="line"></div></pre></td></tr></table></figure>
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<h3 id="为什么要NTP服务"><a href="#为什么要NTP服务" class="headerlink" title="为什么要NTP服务"></a>为什么要NTP服务</h3><p>在搭建某些后台计算程序的时候，需要服务器的时间参与计算，这时候需要用到时间的统一</p>
<h3 id="为什么要用docker搭建NTP服务器"><a href="#为什么要用docker搭建NTP服务器" class="headerlink" title="为什么要用docker搭建NTP服务器"></a>为什么要用docker搭建NTP服务器</h3><p>如果服务器没有NTP server服务的情况下，编译安装NTP服务会比较麻烦，有时候会缺少各种类库，会比较头痛，使用docker部署，很轻松</p>
<h3 id="部署NTP服务"><a href="#部署NTP服务" class="headerlink" title="部署NTP服务"></a>部署NTP服务</h3><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><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div></pre></td><td class="code"><pre><div class="line"># 获取ntpd镜像</div><div class="line">docker pull seznam/ntpd</div><div class="line"></div><div class="line"># 启动ntpd服务</div><div class="line">docker run -d --net=host --name ntpd seznam/ntpd</div><div class="line"></div><div class="line"># 进入容器内部，修改配置文件</div><div class="line">docker exec -it ntpd bash</div><div class="line">vi /etc/ntp.conf</div><div class="line"></div><div class="line"># 添加时间服务器地址，如果内网有时间服务器，填写改地址，如果没有，添加下面的地址，同步本地时间</div><div class="line">server 127.127.1.0</div><div class="line">fudge 127.127.1.0 stratum 8</div><div class="line">restrict default nomodify notrap nopeer noquery</div><div class="line">restrict 127.0.0.1</div><div class="line"></div><div class="line"># 重启容器</div><div class="line">docker restart ntpd</div><div class="line"></div><div class="line"># 同步客户机时间</div><div class="line">ntpdate x.x.x.x (等待时间服务器10分钟后，执行这里)</div><div class="line"></div><div class="line"># 设置定时任务</div><div class="line">crontab -e</div><div class="line">00 2 * * * ntpdate x.x.x.x (每天凌晨2点执行此命令)</div></pre></td></tr></table></figure>
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