标签：退出 复制 mib x86 site outer 系统版本 dea 挂载
很多小伙伴可能在考虑 jenkins 拉取了 github 上的代码后，发现还越少 python3 环境，那能怎么办呢？
咨询了一位运维朋友给我的答案是，将 python3 挂载到容器工作目录上，或者直接复制。
1、将 python3 挂载到容器工作目录上；
2、直接复制 python3 目录到工作目录上；
3、jenkins 容器内安装 python3；
结果：1 、2均均阵亡，为何？明显系统不一样哈，虽然能在命令行中输入 python3 但是 pip3用不了的，执行脚本更是乱七八糟的报错。（所以不推荐）
最后只能看 3 的了。然后在试验的过程中，发现第3种又分为两种，
① weget 安装（不推荐，基本和现安装的方法差不多，先要安装一些依赖包，如 gcc 等）
② apk add 安装（此版本是alpine ：apk add，能够快速安装完成）
最后注意系统版本问题：
如果是 centos 那即是 yum
如果是 ubuntu 那即是 apt-get
如果是 alpine 那即是 apk
1、进入 jenkins 容器 bash：
[root@iZbp19lugf22zbsubsf1y6Z ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES fa81928c4dce jenkinsci/blueocean "/sbin/tini -- /usr/…" 40 minutes ago Up 34 minutes 0.0.0.0:50000->50000/tcp, 0.0.0.0:3006->8080/tcp jenkins
[root@iZbp19lugf22zbsubsf1y6Z ~]# docker exec -itu root jenkins /bin/bash bash-4.4#
2、首先更改 apk 配置源，不然下载速度太慢了。配置文件路径：/etc/apk/repositories
bash-4.4# cd /etc/apk/ bash-4.4# echo "https://mirrors.ustc.edu.cn/alpine/v3.6/main/" > repositories bash-4.4# echo "https://mirrors.ustc.edu.cn/alpine/v3.6/community/" >> repositories bash-4.4#
3、更新 apk 源：apk update
bash-4.4# apk update fetch https://mirrors.ustc.edu.cn/alpine/v3.6/main/x86_64/APKINDEX.tar.gz fetch https://mirrors.ustc.edu.cn/alpine/v3.6/community/x86_64/APKINDEX.tar.gz v3.6.5-44-gda55e27396 [https://mirrors.ustc.edu.cn/alpine/v3.6/main/] v3.6.5-34-gf0ba0b43d5 [https://mirrors.ustc.edu.cn/alpine/v3.6/community/] OK: 8533 distinct packages available
4、直接输入：apk add python3
现在 python 版本为：3.6.8
bash-4.4# apk add python3 (1/7) Downgrading readline (7.0.003-r1 -> 6.3.008-r5) (2/7) Downgrading bash (4.4.19-r1 -> 4.3.48-r1) Executing bash-4.3.48-r1.post-upgrade (3/7) Installing libressl2.5-libcrypto (2.5.5-r2) (4/7) Installing gdbm (1.12-r0) (5/7) Installing xz-libs (5.2.3-r0) (6/7) Installing libressl2.5-libssl (2.5.5-r2) (7/7) Installing python3 (3.6.8-r0) Executing busybox-1.29.3-r10.trigger OK: 466 MiB in 96 packages
1、查看版本：python3 -V
bash-4.4# python3 -V Python 3.6.8
2、查看 pip3 版本：pip3 -V
bash-4.4# pip3 -V pip 18.1 from /usr/lib/python3.6/site-packages/pip (python 3.6)
3、更新pip3：pip3 install --upgrade pip
bash-4.4# pip3 install --upgrade pip Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘ReadTimeoutError("HTTPSConnectionPool(host=‘pypi.org‘, port=443): Read timed out. (read timeout=15)",)‘: /simple/pip/ Collecting pip Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘NewConnectionError(‘<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f54e86969e8>: Failed to establish a new connection: [Errno -3] Try again‘,)‘: /packages/00/b6/9cfa56b4081ad13874b0c6f96af8ce16cfbc1cb06bedf8e9164ce5551ec1/pip-19.3.1-py2.py3-none-any.whl Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘ReadTimeoutError("HTTPSConnectionPool(host=‘files.pythonhosted.org‘, port=443): Read timed out. (read timeout=15)",)‘: /packages/00/b6/9cfa56b4081ad13874b0c6f96af8ce16cfbc1cb06bedf8e9164ce5551ec1/pip-19.3.1-py2.py3-none-any.whl Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘ReadTimeoutError("HTTPSConnectionPool(host=‘files.pythonhosted.org‘, port=443): Read timed out. (read timeout=15)",)‘: /packages/00/b6/9cfa56b4081ad13874b0c6f96af8ce16cfbc1cb06bedf8e9164ce5551ec1/pip-19.3.1-py2.py3-none-any.whl Downloading https://files.pythonhosted.org/packages/00/b6/9cfa56b4081ad13874b0c6f96af8ce16cfbc1cb06bedf8e9164ce5551ec1/pip-19.3.1-py2.py3-none-any.whl (1.4MB) 100% |████████████████████████████████| 1.4MB 93kB/s Installing collected packages: pip Found existing installation: pip 18.1 Uninstalling pip-18.1: Successfully uninstalled pip-18.1 Successfully installed pip-19.3.1
4、生成 requirements.txt：
5、我是直接粘贴上去：vi requirements.txt
保存退出：
6、执行：pip3 install -r requirements.txt
bash-4.4# pip3 install -r requirements.txt Collecting ddt==1.2.2 Downloading https://files.pythonhosted.org/packages/85/f3/44aea9a98e15e01d276618955dd78229dbc1500ec64146cf215022b84615/ddt-1.2.2-py2.py3-none-any.whl Collecting PyMySQL==0.9.3 Downloading https://files.pythonhosted.org/packages/ed/39/15045ae46f2a123019aa968dfcba0396c161c20f855f11dea6796bcaae95/PyMySQL-0.9.3-py2.py3-none-any.whl (47kB) |████████████████████████████████| 51kB 163kB/s Collecting requests==2.22.0 Downloading https://files.pythonhosted.org/packages/51/bd/23c926cd341ea6b7dd0b2a00aba99ae0f828be89d72b2190f27c11d4b7fb/requests-2.22.0-py2.py3-none-any.whl (57kB) |████████████████████████████████| 61kB 17kB/s Collecting urllib3==1.25.7 Downloading https://files.pythonhosted.org/packages/b4/40/a9837291310ee1ccc242ceb6ebfd9eb21539649f193a7c8c86ba15b98539/urllib3-1.25.7-py2.py3-none-any.whl (125kB) |████████████████████████████████| 133kB 19kB/s Collecting xlrd==1.2.0 Downloading https://files.pythonhosted.org/packages/b0/16/63576a1a001752e34bf8ea62e367997530dc553b689356b9879339cf45a4/xlrd-1.2.0-py2.py3-none-any.whl (103kB) |████████████████████████████████| 112kB 8.1kB/s Collecting xlutils==2.0.0 Downloading https://files.pythonhosted.org/packages/c7/55/e22ac73dbb316cabb5db28bef6c87044a95914f713a6e81b593f8a0d2f79/xlutils-2.0.0-py2.py3-none-any.whl (55kB) |████████████████████████████████| 61kB 15kB/s Collecting xlwt==1.3.0 Downloading https://files.pythonhosted.org/packages/44/48/def306413b25c3d01753603b1a222a011b8621aed27cd7f89cbc27e6b0f4/xlwt-1.3.0-py2.py3-none-any.whl (99kB) |████████████████████████████████| 102kB 7.2kB/s Collecting chardet<3.1.0,>=3.0.2 Downloading https://files.pythonhosted.org/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl (133kB) |████████████████████████████████| 143kB 4.9kB/s Collecting idna<2.9,>=2.5 Downloading https://files.pythonhosted.org/packages/14/2c/cd551d81dbe15200be1cf41cd03869a46fe7226e7450af7a6545bfc474c9/idna-2.8-py2.py3-none-any.whl (58kB) |████████████████████████████████| 61kB 13kB/s Collecting certifi>=2017.4.17 Downloading https://files.pythonhosted.org/packages/b9/63/df50cac98ea0d5b006c55a399c3bf1db9da7b5a24de7890bc9cfd5dd9e99/certifi-2019.11.28-py2.py3-none-any.whl (156kB) |████████████████████████████████| 163kB 13kB/s Installing collected packages: ddt, PyMySQL, chardet, idna, certifi, urllib3, requests, xlrd, xlwt, xlutils Successfully installed PyMySQL-0.9.3 certifi-2019.11.28 chardet-3.0.4 ddt-1.2.2 idna-2.8 requests-2.22.0 urllib3-1.25.7 xlrd-1.2.0 xlutils-2.0.0 xlwt-1.3.0
最后总结：docker 容器内如果安装其它环境会比较复杂点，如遇到 gcc 等依赖包，突然给你报个错，不知所措了。
不像我们在阿里云的服务器一样，给你安装好那么多工具，小龙遇到过：C编译问题、apt-get 安装问题、安装完没有pip3等等。用apt-get也成功过，但是还是比较推荐上述这种一步到位！
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标签：退出 复制 mib x86 site outer 系统版本 dea 挂载
原文地址：https://www.cnblogs.com/gsxl/p/12147177.html
