CentOS 常见异常及解决办法

ゞ浴缸里的玫瑰 2022-12-21 06:07 275阅读 0赞

### 文章目录 ###

*   *  1.pip3安装mysqlclient报错python setup.py egg\_info Check the logs for full command output.
     *  2.vim编辑文件时每一行末尾都有\`^M\`

## 1.pip3安装mysqlclient报错python setup.py egg\_info Check the logs for full command output. ##

在CentOS上部署Django项目时，经常需要安装MySQL数据库引擎，如mysqlclient，在执行`pip3 install mysqlclient`命令时，可能会报错如下：

ERROR: Command errored out with exit status 1:
         command: /usr/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-zmnd8v74/mysqlclient/setup.py'"'"'; __file__='"'"'/tmp/pip-install-zmnd8v74/mysqlclient/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-jpy0d_w0
             cwd: /tmp/pip-install-zmnd8v74/mysqlclient/
        Complete output (12 lines):
        /bin/sh: mysql_config: command not found
        /bin/sh: mariadb_config: command not found
        /bin/sh: mysql_config: command not found
        Traceback (most recent call last):
          File "<string>", line 1, in <module>
          File "/tmp/pip-install-zmnd8v74/mysqlclient/setup.py", line 15, in <module>
            metadata, options = get_config()
          File "/tmp/pip-install-zmnd8v74/mysqlclient/setup_posix.py", line 65, in get_config
            libs = mysql_config("libs")
          File "/tmp/pip-install-zmnd8v74/mysqlclient/setup_posix.py", line 31, in mysql_config
            raise OSError("{} not found".format(_mysql_config_path))
        OSError: mysql_config not found
        ----------------------------------------
    ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

这是因为缺少mysql-devel包，需要现进行安装，同时为了解决包版本冲突和依赖冲突，需要先下载并安装mysql的yum源，命令如下：

# 下载对应版本mysql的yum源的rpm包
    wget http://repo.mysql.com/mysql57-community-release-el7-8.noarch.rpm
    
    # 安装rpm包
    rpm -ivh mysql57-community-release-el7-8.noarch.rpm

然后再执行`yum install mysql-devel`命令安装mysql-devel包，打印如下：

Loaded plugins: fastestmirror
    mysql-connectors-community                                                                                                                                                                 | 2.6 kB  00:00:00     
    mysql-tools-community                                                                                                                                                                      | 2.6 kB  00:00:00     
    mysql57-community                                                                                                                                                                          | 2.6 kB  00:00:00     
    Loading mirror speeds from cached hostfile
    Resolving Dependencies
    --> Running transaction check
    ---> Package mysql-community-devel.x86_64 0:5.7.32-1.el7 will be installed
    --> Finished Dependency Resolution

就将mysql-devel包安装成功了。

最后再执行`pip3 install mysqlclient`命令就可以成功安装mysqlclient引擎。

## 2.vim编辑文件时每一行末尾都有`^M` ##

用Linux打开Windows或Mac本地编辑过的文本文件时，末尾都会带`^M`，如下：  
![Vim ^M][Vim _M]  
这是`CTRL+M`，是换行符`\r`，最简单的方式是在命令模式下进行替换即可，如下：  
![replace][]  
命令为`:%s#\r##`或`%s/\r//`。  
更多说明和方法可参考[https://blog.csdn.net/weixin\_33826609/article/details/92711016][https_blog.csdn.net_weixin_33826609_article_details_92711016]。

[Vim _M]: /images/20221120/05b654778c7e473399acb89ea89c95e1.png
[replace]: /images/20221120/7f5dbd96c0e548828b2c164f63fd40cd.png
[https_blog.csdn.net_weixin_33826609_article_details_92711016]: https://blog.csdn.net/weixin_33826609/article/details/92711016