【CentOS --- CondaHTTPError: HTTP 000 CONNECTION FAILED 】

问题：在这里插入代码片

hangsan@localhost ~]$ conda create -n wen python=3.6
Solving environment: failed

CondaHTTPError: HTTP 000 CONNECTION FAILED for url
 <https://repo.continuum.io/pkgs/free/linux-64/repodata.json.bz2>
Elapsed: -

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on 
your way.
ConnectionError(MaxRetryError("HTTPSConnectionPool(host='repo.continuum.
io', port=443): Max retries exceeded with url: /pkgs/free/linux-64/repodata.json.bz2 
(Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object 
at 0x7f4e54a366d8>: Failed to establish a new connection: [Errno -2] 
Name or service not known',))",),)

正常情况Linux的配置文件

# .bashrc
 
# Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi
 
# Uncomment the following line if you don't like systemctl's auto-paging feature:
# export SYSTEMD_PAGER=
 
# User specific aliases and functions
 
# added by Anaconda3 installer
export PATH="/home/xiaotian（用户名）/anaconda3/bin:$PATH"  
alias python="~/anaconda3/bin/python3"
alias python3=python
alias pip="~/anaconda3/bin/pip"
alias pip3=pip
alias conda="~/anaconda3/bin/conda"


更改：  sudo gedit ~/.bashrc
保存：  source ~/.bashrc

解决;

一、centos7之前的版本可以通过iptables相关命令实现防火墙的打开和关闭

• 1.首先可以在打开的终端使用iptables --help查看帮助使用命令；

• 2.查看防火墙状态：service iptables status(此命令可以查看防火墙是打开还是关闭);

• 3.service iptables常接参数：

  -（1）service iptables stop关闭防火墙；

  -（2）service iptables start开启防火墙；

  -（3）service iptables reload重新加载防火墙；

  -（4）service iptables restart重启防火墙；

• 4.永久关闭/打开防火墙

  • chkconfig iptables off 永久关闭防火墙；

  • chkconfig iptables on永久打开防火墙；
    ————————————————

网络ping不通的同学：
1.关闭linux的防火墙（自行上网搜索方法哈）
2.vmware中的虚拟网络编辑器中，设置子网IP（与系统IP号段相同）和网关IP（与系统网关相同）

镜像的示例配置

---

额外补充：

防火墙

查看已经开放的端口

firewall-cmd --list-ports 
 
开启端口

firewall-cmd --zone=public --add-port=80/tcp --permanent  

命令含义:
–zone #作用域
–add-port=80/tcp #添加端口，格式为：端口/通讯协议
–permanent #永久生效，没有此参数重启后失效
关闭端口

firewall-cmd --zone=public --remove-port=3306/tcp --permanent
 

开启端口后记得重启

firewall-cmd --reload

或者

systemctl restart firewalld
 
防火墙其他命令

# 开启防火墙
systemctl start firewalld

#停止firewall  
systemctl stop firewalld 

#重启防火墙
systemctl restart firewalld

#firewall开机启动  
systemctl enable firewalld

#禁止firewall开机启动  
systemctl disable firewalld

在 | .condarc | 写入可以更改下载的镜像，加速pip

channels:
  - defaults
show_channel_urls: true
channel_alias: https://mirrors.tuna.tsinghua.edu.cn/anaconda
default_channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/pro
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/msys2
custom_channels:
  conda-forge: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  msys2: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  bioconda: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  menpo: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  pytorch: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  simpleitk: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud

第二种解决方法

怎么解决 conda create -n name python=3.6

问题

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/linux-64/repodata.json>
Elapsed: -
 
An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.
SSLError(MaxRetryError('HTTPSConnectionPool(host=\'mirrors.tuna.tsinghua.edu.cn\', port=443): Max retries exceeded with url: /anaconda/pkgs/free/linux-64/repodata.json (Caused by SSLError(SSLError("bad handshake: Error([(\'SSL routines\', \'ssl3_get_server_certificate\', \'certificate verify failed\')],)",),))',),)


-----------------------------------------------------


上述不通  可执行下面这个

在ubuntu 的home 目录下，ctrl+h，显示所有隐藏文件，打开.condarc文件， 或终端

gedit ~/.condarc 

---------------------------------

ssl_verify: true
show_channel_urls: true
 
channels:
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/

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