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<a href="/post/2024/09/06/cant-connect-to-local-mysql-server-through-socket/">ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)</a>
</h1><div class="post-meta"><span class="post-author"><a href="https://www.ithome.me/" title="Author" target="_blank" rel="noopener noreffer author" class="author"><i class="fas fa-user-circle fa-fw" aria-hidden="true"></i>Simon</a>
</span> <span class="post-publish">published on <time datetime="2024-09-06">2024-09-06</time></span></div><div class="content"><p>Mac上通过<code>brew install mysql</code>安装，但是某天突然无法启动，报错：ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’ (2)。</p>
<p>网上的解决方案试了一遍没一个有用，真正有用的是</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-gdscript3" data-lang="gdscript3"><span class="line"><span class="cl"><span class="n">rm</span> <span class="o">-</span><span class="n">rf</span> <span class="o">/</span><span class="n">opt</span><span class="o">/</span><span class="n">homebrew</span><span class="o">/</span><span class="k">var</span><span class="o">/</span><span class="n">mysql</span>
</span></span></code></pre></div><p>但是会把所有的内容清空。自己慎重。</p>
<p>删除后重新安装就OK了</p></div><div class="post-footer">
<a href="/post/2024/09/06/cant-connect-to-local-mysql-server-through-socket/">Read More</a></div>
</article><article class="single summary" itemscope itemtype="http://schema.org/Article"><h1 class="single-title" itemprop="name headline">
<a href="/post/2023/11/08/%E9%98%BF%E9%87%8C%E4%BA%91linux%E6%9B%B4%E6%96%B0docker/">2023 11 08 阿里云Linux更新docker</a>
</h1><div class="post-meta"><span class="post-author"><a href="https://www.ithome.me/" title="Author" target="_blank" rel="noopener noreffer author" class="author"><i class="fas fa-user-circle fa-fw" aria-hidden="true"></i>Simon</a>
</span> <span class="post-publish">published on <time datetime="2023-11-08">2023-11-08</time></span> <span class="post-category">included in <a href="/categories/%E7%BC%96%E7%A8%8B/"><i class="far fa-folder fa-fw" aria-hidden="true"></i>编程</a></span></div><div class="content"><h1 id="前言">前言</h1>
<p>我的系统信息:</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">Distributor ID: AlibabaCloud(AliyunLinux)
</span></span><span class="line"><span class="cl">Description: Alibaba Cloud Linux (Aliyun Linux) release 2.1903 LTS (Hunting Beagle)
</span></span><span class="line"><span class="cl">Release: 2.1903
</span></span></code></pre></div><p>aliyun linux 2实际对应的是centos7。默认的docker版本是Docker version 1.13.1, build 7d71120/1.13.1，这个版本已经很老旧了，无法兼容一些新的容器。所以升级是非常有必要的。</p>
<h1 id="卸载旧版本">卸载旧版本</h1>
<h3 id="删除docker">删除docker</h3>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl"> yum remove docker \
</span></span><span class="line"><span class="cl"> docker-client \
</span></span><span class="line"><span class="cl"> docker-client-latest \
</span></span><span class="line"><span class="cl"> docker-common \
</span></span><span class="line"><span class="cl"> docker-latest \
</span></span><span class="line"><span class="cl"> docker-latest-logrotate \
</span></span><span class="line"><span class="cl"> docker-logrotate \
</span></span><span class="line"><span class="cl"> docker-engine
</span></span></code></pre></div><p>如果无法卸载，则需要先查看安装的docker包。
执行下面的指令:</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">yum list installed | grep docker
</span></span></code></pre></div><p>打印结果如下：</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">docker.x86_64 2:1.13.1-209.git7d71120.1.al7 @updates
</span></span><span class="line"><span class="cl">docker-client.x86_64 2:1.13.1-209.git7d71120.1.al7 @updates
</span></span><span class="line"><span class="cl">docker-common.x86_64 2:1.13.1-209.git7d71120.1.al7 @updates
</span></span><span class="line"><span class="cl">docker-compose.noarch 1.18.0-4.el7 @epel
</span></span><span class="line"><span class="cl">docker-rhel-push-plugin.x86_64 2:1.13.1-209.git7d71120.1.al7 @updates
</span></span><span class="line"><span class="cl">python36-docker.noarch 2.6.1-3.el7 @epel
</span></span><span class="line"><span class="cl">python36-docker-pycreds.noarch 0.2.1-2.el7 @epel
</span></span><span class="line"><span class="cl">python36-dockerpty.noarch 0.4.1-18.el7 @epel
</span></span></code></pre></div><p>然后再次执行</p></div><div class="post-footer">
<a href="/post/2023/11/08/%E9%98%BF%E9%87%8C%E4%BA%91linux%E6%9B%B4%E6%96%B0docker/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw" aria-hidden="true"></i> <a href="/tags/docker/">Docker</a></div></div>
</article><article class="single summary" itemscope itemtype="http://schema.org/Article"><h1 class="single-title" itemprop="name headline">
<a href="/post/2022/11/23/alibaba-cloud-linux%E6%9B%B4%E6%96%B0git%E7%89%88%E6%9C%AC%E5%88%B02/">2022 11 23 Alibaba Cloud Linux更新git版本到2.x</a>
</h1><div class="post-meta"><span class="post-author"><a href="https://www.ithome.me/" title="Author" target="_blank" rel="noopener noreffer author" class="author"><i class="fas fa-user-circle fa-fw" aria-hidden="true"></i>Simon</a>
</span> <span class="post-publish">published on <time datetime="2022-11-23">2022-11-23</time></span> <span class="post-category">included in <a href="/categories/%E7%BC%96%E7%A8%8B/"><i class="far fa-folder fa-fw" aria-hidden="true"></i>编程</a></span></div><div class="content"><p>Alibaba Cloud Linux是阿里云基于龙蜥社区（OpenAnolis）的龙蜥操作系统（Anolis OS）打造的操作系统发行版，兼容RHEL/CentOS。</p>
<p>底层实际就是centos，先要区分你的版本是centos7还是8。</p>
<p>Alibaba Cloud Linux 3选择Linux kernel 5.10 LTS，同时默认搭载GCC 10.2、binutils 2.35、glibc 2.32等基础软件。
Alibaba Cloud Linux 2选择Linux kernel 4.19 LTS，同时提供GCC-7.3.1/8.2.1/9.1.1的devtoolset支持。</p>
<p>Alibaba Cloud Linux 3基于Anolis OS 8打造，兼容CentOS 8、RHEL 8生态。
Alibaba Cloud Linux 2基于Aonlis OS 7打造，兼容CentOS 7、RHEL 7生态。</p>
<p>可以通过<code>cat /proc/version</code>指令查看你的内核版本，以此来判断你是7还是8。</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">Linux version 4.19.91-24.1.al7.x86_64 ([email protected]) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)) #1 SMP Wed Jul 21 17:40:23 CST 2021
</span></span></code></pre></div><p>比如我的是4.19，那么就是centos 7。</p>
<h3 id="1-首先要添加源">1. 首先要添加源</h3>
<p>如果是其他版本的，自行在这里https://packages.endpointdev.com查找</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">yum install https://packages.endpointdev.com/rhel/7/os/x86_64/endpoint-repo.x86_64.rpm
</span></span></code></pre></div><p>(非root用户前面需要添加sudo)</p>
<h3 id="2-修改repo文件">2. 修改repo文件</h3>
<p>如果你此时去<code>yum install git</code>会报错</p></div><div class="post-footer">
<a href="/post/2022/11/23/alibaba-cloud-linux%E6%9B%B4%E6%96%B0git%E7%89%88%E6%9C%AC%E5%88%B02/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw" aria-hidden="true"></i> <a href="/tags/git/">Git</a></div></div>
</article><article class="single summary" itemscope itemtype="http://schema.org/Article"><h1 class="single-title" itemprop="name headline">
<a href="/post/2022/11/21/subsystem-request-failed-on-channel-0-scp-connection-closed/">2022 11 21 Subsystem Request Failed on Channel 0 Scp: Connection Closed</a>
</h1><div class="post-meta"><span class="post-author"><a href="https://www.ithome.me/" title="Author" target="_blank" rel="noopener noreffer author" class="author"><i class="fas fa-user-circle fa-fw" aria-hidden="true"></i>Simon</a>
</span> <span class="post-publish">published on <time datetime="2022-11-21">2022-11-21</time></span> <span class="post-category">included in <a href="/categories/%E7%BC%96%E7%A8%8B/"><i class="far fa-folder fa-fw" aria-hidden="true"></i>编程</a></span></div><div class="content"><p>某次正常拉取<code>gerrit</code>仓库的时候，出现报错</p>
<blockquote>
<p>subsystem request failed on channel 0
scp: Connection closed</p>
</blockquote>
<p>报错原因是scp版本升级导致问题出现。解决方案如下：
<code>https://github.com/PowerShell/Win32-OpenSSH/issues/1945</code></p>
<p>不想看issues的直接根据下面的改：
<code>scp -p -P</code>改为<code>scp -p -O -P</code></p></div><div class="post-footer">
<a href="/post/2022/11/21/subsystem-request-failed-on-channel-0-scp-connection-closed/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw" aria-hidden="true"></i> <a href="/tags/gerrit/">Gerrit</a>, <a href="/tags/scp/">Scp</a></div></div>
</article><article class="single summary" itemscope itemtype="http://schema.org/Article"><h1 class="single-title" itemprop="name headline">
<a href="/post/2021/12/17/docker%E9%83%A8%E7%BD%B2rocketmq%E5%8D%95%E6%9C%BA%E5%AE%9E%E6%88%98/">手摸手极简docker部署rocketmq单机实战</a>
</h1><div class="post-meta"><span class="post-author"><a href="/" title="Author" rel=" author" class="author"><i class="fas fa-user-circle fa-fw" aria-hidden="true"></i>Simon</a>
</span> <span class="post-publish">published on <time datetime="2021-12-17">2021-12-17</time></span> <span class="post-category">included in <a href="/categories/%E7%BC%96%E7%A8%8B/"><i class="far fa-folder fa-fw" aria-hidden="true"></i>编程</a> <a href="/categories/%E5%BC%80%E5%8F%91/"><i class="far fa-folder fa-fw" aria-hidden="true"></i>开发</a></span></div><div class="content"><p>自己本地搭建rocketmq开发环境还是用docker方便点，之前搭建一直有些小问题，最近专项解决了下，终于搞定了，这里整理分享下</p>
<h3 id="环境准备">环境准备</h3>
<blockquote>
<p>因笔者用的MacBook，所以会主要以Mac为主讲解，其他环境区别不大</p>
</blockquote>
<p>首先请准备好docker环境，推荐<a href="https://www.docker.com/products/docker-desktop" target="_blank" rel="noopener noreffer">docker desktop</a>
，无他，点点点就完事了，不用的时候不启动，开发机紧张的内存问题得到了心理上的安慰。</p>
<p>还需要安装好<code>docker-compose</code>，请自行参考安装教程<a href="https://docs.docker.com/compose/install/" target="_blank" rel="noopener noreffer">点这里</a>
</p>
<blockquote>
<p>注：<code>docker desktop</code>自带了docker-compose，所以不需要再单独安装compose了</p>
</blockquote>
<h3 id="编译rocketmq镜像">编译rocketmq镜像</h3>
<p>环境搞定了，我们开始搭建rocketmq，直接用官方推荐的docker镜像即可。
镜像下载地址：<a href="https://github.com/apache/rocketmq-docker" target="_blank" rel="noopener noreffer">https://github.com/apache/rocketmq-docker</a>
</p>
<p>我们先通过<code>git</code>把代码拉下来，打开命令行复制粘贴</p>
<p><code>git clone https://hub.fastgit.org/apache/rocketmq-docker.git</code></p>
<p>clone完成后，继续<code>cd rocketmq-docker/image-build</code>到image-build目录下</p>
<p>目前最新版本为<code>4.9.2</code>,我们就以这个版本为例：
继续输入下列指令</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">sh build-image.sh 4.9.2 alpine
</span></span></code></pre></div><p>等待完成就即可，如果报错，请自行根据错误查找原因。只要环境没问题，编译完成后我们能得到<code>apacherocketmq/rocketmq</code>镜像</p>
<p>至此，我们已经完成了一半的工作。</p>
<h3 id="编写docker-compose配置">编写docker-compose配置</h3>
<blockquote>
<p>鲁迅：授人以鱼不如授人以渔和鱼
有经验的同学此时已经急不可耐了，鱼拿去。
完整的<code>docker-compose.yml</code>文件</p>
</blockquote>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">version: '3'
</span></span><span class="line"><span class="cl">services:
</span></span><span class="line"><span class="cl"> namesrv:
</span></span><span class="line"><span class="cl"> image: apacherocketmq/rocketmq:4.9.2-alpine
</span></span><span class="line"><span class="cl"> container_name: rmqnamesrv
</span></span><span class="line"><span class="cl"> ports:
</span></span><span class="line"><span class="cl"> - 9876:9876
</span></span><span class="line"><span class="cl"> volumes:
</span></span><span class="line"><span class="cl"> - ./data/namesrv/logs:/home/rocketmq/logs
</span></span><span class="line"><span class="cl"> command: sh mqnamesrv
</span></span><span class="line"><span class="cl"> restart: always
</span></span><span class="line"><span class="cl"> broker:
</span></span><span class="line"><span class="cl"> image: apacherocketmq/rocketmq:4.9.2-alpine
</span></span><span class="line"><span class="cl"> container_name: rmqbroker
</span></span><span class="line"><span class="cl"> links:
</span></span><span class="line"><span class="cl"> - namesrv
</span></span><span class="line"><span class="cl"> ports:
</span></span><span class="line"><span class="cl"> - 10909:10909
</span></span><span class="line"><span class="cl"> - 10911:10911
</span></span><span class="line"><span class="cl"> - 10912:10912
</span></span><span class="line"><span class="cl"> environment:
</span></span><span class="line"><span class="cl"> - NAMESRV_ADDR=namesrv:9876
</span></span><span class="line"><span class="cl"> volumes:
</span></span><span class="line"><span class="cl"> - ./data/broker/logs:/home/rocketmq/logs
</span></span><span class="line"><span class="cl"> - ./data/broker/store:/home/rocketmq/store
</span></span><span class="line"><span class="cl"> - ./data/broker/conf/broker.conf:/home/rocketmq/rocketmq-4.9.2/conf/broker.conf
</span></span><span class="line"><span class="cl"> - ./data/broker/runbroker.sh:/home/rocketmq/rocketmq-4.9.2/bin/runbroker.sh
</span></span><span class="line"><span class="cl"> command: sh mqbroker -c /home/rocketmq/rocketmq-4.9.2/conf/broker.conf
</span></span><span class="line"><span class="cl"> depends_on:
</span></span><span class="line"><span class="cl"> - namesrv
</span></span><span class="line"><span class="cl"> restart: always
</span></span><span class="line"><span class="cl"> rmqconsole:
</span></span><span class="line"><span class="cl"> image: candice0630/rocketmq-console-ng:2.0
</span></span><span class="line"><span class="cl"> container_name: rmqconsole
</span></span><span class="line"><span class="cl"> ports:
</span></span><span class="line"><span class="cl"> - 9001:8080
</span></span><span class="line"><span class="cl"> environment:
</span></span><span class="line"><span class="cl"> JAVA_OPTS: -Drocketmq.namesrv.addr=namesrv:9876
</span></span><span class="line"><span class="cl"> -Dcom.rocketmq.sendMessageWithVIPChannel=false
</span></span><span class="line"><span class="cl"> depends_on:
</span></span><span class="line"><span class="cl"> - namesrv
</span></span><span class="line"><span class="cl"> restart: always
</span></span></code></pre></div><p>上面一共三个images，<code>namesrv</code>、<code>broker</code>和<code>rmqconsole</code>
熟悉<code>docker-compose</code>的同学可以直接跳过这部分了
本部分主要结合上面的配置来说，不适应的根据自己的习惯自行更改
先建立一个<code>rocketmq</code>文件夹，然后在文件夹下面创建<code>docker-compose.yml</code>文件，复制上面的内容进去。在<code>docker-compose.yml</code>同级目录下创建<code>data</code>文件夹，在<code>data</code>文件夹下分别创建<code>broker</code>和<code>namesrv</code>文件夹，<code>broker</code>目录下分别创建<code>conf</code>、<code>logs</code>和<code>store</code>文件夹。<code>namesrv</code>目录下创建<code>logs</code>目录，<code>logs</code>目录下创建<code>rocketmqlogs</code>目录，这样所有的目录创建完成。自定义的<code>broker.conf</code>文件放到<code>data/broker/conf</code>目录下。</p></div><div class="post-footer">
<a href="/post/2021/12/17/docker%E9%83%A8%E7%BD%B2rocketmq%E5%8D%95%E6%9C%BA%E5%AE%9E%E6%88%98/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw" aria-hidden="true"></i> <a href="/tags/%E7%BC%96%E7%A8%8B/">编程</a>, <a href="/tags/%E7%A8%8B%E5%BA%8F%E5%91%98/">程序员</a>, <a href="/tags/%E9%9D%A2%E8%AF%95/">面试</a></div></div>
</article><article class="single summary" itemscope itemtype="http://schema.org/Article"><h1 class="single-title" itemprop="name headline">
<a href="/post/2021/06/24/centos7%E4%B8%8A%E6%9B%B4%E6%96%B0redis%E5%88%B06/">2021 06 24 Centos7上更新Redis到最新版</a>
</h1><div class="post-meta"><span class="post-author"><a href="https://www.ithome.me/" title="Author" target="_blank" rel="noopener noreffer author" class="author"><i class="fas fa-user-circle fa-fw" aria-hidden="true"></i>Simon</a>
</span> <span class="post-publish">published on <time datetime="2021-06-24">2021-06-24</time></span> <span class="post-category">included in <a href="/categories/%E7%BC%96%E7%A8%8B/"><i class="far fa-folder fa-fw" aria-hidden="true"></i>编程</a></span></div><div class="content"><h3 id="1-首先需要安装remi的软件源官网地址httprpmsremireponet">1. 首先需要安装Remi的软件源，<a href="http://rpms.remirepo.net/" target="_blank" rel="noopener noreffer">官网地址</a>
</h3>
<p>我们选择中国的镜像地址：</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">//centos 7
</span></span><span class="line"><span class="cl">yum install -y https://mirrors.tuna.tsinghua.edu.cn/remi/enterprise/remi-release-7.rpm
</span></span></code></pre></div><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">//centos 8
</span></span><span class="line"><span class="cl">yum install -y https://mirrors.tuna.tsinghua.edu.cn/remi/enterprise/remi-release-8.rpm
</span></span></code></pre></div><h3 id="2-输入-yum---enablereporemi-install-redis">2. 输入 <code>yum --enablerepo=remi install redis</code></h3>
<p>中途会提示输入<code>y</code></p>
<h3 id="3-安装完成后输入systemctl-start-redis启动redis">3. 安装完成后输入<code>systemctl start redis</code>启动redis</h3>
<p>如果之前已经在运行redis3.x，可以输入<code>systemctl restart redis</code>重启一次</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">//查看运行状态
</span></span><span class="line"><span class="cl">systemctl status redis
</span></span></code></pre></div><h3 id="4-查看redis版本">4. 查看redis版本</h3>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">redis-server -v
</span></span></code></pre></div></div><div class="post-footer">
<a href="/post/2021/06/24/centos7%E4%B8%8A%E6%9B%B4%E6%96%B0redis%E5%88%B06/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw" aria-hidden="true"></i> <a href="/tags/centos/">Centos</a>, <a href="/tags/redis/">Redis</a></div></div>
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