在国内由于不可描述的原因无法访问Google等网站，但是作为一枚挨踢人士，无法使用Google搜索，在使用Ctrl + C技能时是抓狂的；特别是当下Docker、Kubernetes等容器技术火热的时代，很多的文档、镜像都需要访问Google相关网站。
在此简单介绍Centos7配置http代理和Docker pull时使用http代理
1、Centos7配置HTTP代理
1.1、安装epel源和pip包管理
# yum install epel-release -y
# yum install python-pip -y
1.2、安装Shadowsocks客户端
# pip install shadowsocks
1.3、配置Shadowsocks连接
# mkdir /etc/shadowsocks
# vim /etc/shadowsocks/shadowsocks.json
{
"server":"x.x.x.x", # Shadowsocks服务器地址
"server_port":1035, # Shadowsocks服务器端口
"local_address": "127.0.0.1", # 本地IP
"local_port":1080, # 本地端口
"password":"password", # Shadowsocks连接密码
"timeout":300, # 等待超时时间
"method":"aes-256-cfb", # 加密方式
"fast_open": false, # true或false。开启fast_open以降低延迟，但要求Linux内核在3.7+
"workers": 1 #工作线程数
}
注：Shadowsocks服务器地址、端口自行准备
1.4、启动Shadowsocks
# /usr/bin/sslocal -c /etc/shadowsocks/shadowsocks.json
Centos7开机自启脚本
# vim /etc/systemd/system/shadowsocks.service
[Unit]
Description=Shadowsocks
[Service]
TimeoutStartSec=0
ExecStart=/usr/bin/sslocal -c /etc/shadowsocks/shadowsocks.json
[Install]
WantedBy=multi-user.target
# systemctl enable shadowsocks.service
# systemctl start shadowsocks.service
# systemctl status shadowsocks.service
验证代理是否可用
# curl --socks5 127.0.0.1:1080 http://httpbin.org/ip
正常应该返回Shadowsocks服务器地址
至此算是可以实现代理，但是每次访问都需要带上参数，是否可以每当访问就可以代理而不需要手动添加参数呢？这个当然是可以的
2、安装配置Privoxy
2.1、安装Privoxy
# yum install privoxy -y
2.2、配置privoxy
# vim /etc/privoxy/config ##修改如下参数
listen-address 127.0.0.1:8118 # 8118 是默认端口，不用改
forward-socks5t / 127.0.0.1:1080 . #转发到本地端口，注意最后有个点
2.3、配置http、https代理
# vim /etc/profile
PROXY_HOST=127.0.0.1
export all_proxy=http://$PROXY_HOST:8118
export ftp_proxy=http://$PROXY_HOST:8118
export http_proxy=http://$PROXY_HOST:8118
export https_proxy=http://$PROXY_HOST:8118
export no_proxy=localhost,172.16.0.0/16,192.168.0.0/16.,127.0.0.1,10.10.0.0/16
# source /etc/profile
2.4、测试代理
# curl -I www.google.com
HTTP/1.1 200 OK
Date: Fri, 21 Sep 2018 02:46:43 GMT
Expires: -1
Cache-Control: private, max-age=0
Content-Type: text/html; charset=ISO-8859-1
P3P: CP="This is not a P3P policy! See g.co/p3phelp for more info."
Server: gws
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
Set-Cookie: 1P_JAR=2018-09-21-02; expires=Sun, 21-Oct-2018 02:46:43 GMT; path=/; domain=.google.com
Set-Cookie: NID=139=asr4pvtu-vqfmdfMyrtIEjQ7qYPBBEf-6p7DYMiz2HI1SLn81kWiXtc-G1nr9VUw_bq-bwxUMf5HnPKw9UXYx7VpTSVxKHsETJiW-NtjSWIEZDaOMs01UJe0KM7gfuzA; expires=Sat, 23-Mar-2019 02:46:43 GMT; path=/; domain=.google.com; HttpOnly
Transfer-Encoding: chunked
Accept-Ranges: none
Vary: Accept-Encoding
Proxy-Connection: keep-alive
3、Docker配置HTTP代理
通过上面步骤已经在Centos7上访问google等网站，并下载一些资源包，但是在docker pull某些镜像的时候（例如k8s.gcr.io/pause ）会发现还是无法pull镜像，但是这个镜像是在使用kubernetes必不可少
3.1、修改Docker配置
# mkdir /etc/systemd/system/docker.service.d
# vim /etc/systemd/system/docker.service.d/http-proxy.conf
[Service]
Environment="HTTP_PROXY=http://127.0.0.1:8118"
3.2、重启Docker服务
# systemctl daemon-reload
# systemctl restart docker
# docker info
Containers: 26
Running: 15
Paused: 0
Stopped: 11
Images: 47
Server Version: 18.06.1-ce
Storage Driver: overlay2
Backing Filesystem: xfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay weavemesh
Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: active
NodeID: j4i6athr04yfqhusrpx6mwkyf
Is Manager: true
ClusterID: vejlbon9n62xzznz7gc7lcem7
Managers: 1
Nodes: 3
Orchestration:
Task History Retention Limit: 5
Raft:
Snapshot Interval: 10000
Number of Old Snapshots to Retain: 0
Heartbeat Tick: 1
Election Tick: 10
Dispatcher:
Heartbeat Period: 5 seconds
CA Configuration:
Expiry Duration: 3 months
Force Rotate: 0
Autolock Managers: false
Root Rotation In Progress: false
Node Address: 192.168.99.143
Manager Addresses:
192.168.99.143:2377
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 468a545b9edcd5932818eb9de8e72413e616e86e
runc version: 69663f0bd4b60df09991c08812a60108003fa340
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-862.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.796GiB
Name: docker01
ID: BYKL:LKWQ:32GB:DJJA:VU6V:RU7Q:EV7G:IJWZ:OYIP:SWXM:SWO7:WD3Y
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
HTTP Proxy: http://127.0.0.1:8118
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Registry Mirrors:
https://so9gt83b.mirror.aliyuncs.com/
Live Restore Enabled: false
执行docker info 可以看到HTTP Proxy: http://127.0.0.1:8118 刚刚配置的http代理地址