How to fix Anaconda ProxyError in Ubuntu 20.04? - linux

Question

I have instilled a Anaconda with the infromation:
:~$ conda info
conda info --all
active environment : None
user config file : /home/qic220/.condarc
populated config files : /home/qic220/.condarc
conda version : 4.8.3
conda-build version : 3.18.11
python version : 3.8.3.final.0
virtual packages : __cuda=11.1
__glibc=2.31
base environment : /home/qic220/anaconda3 (writable)
channel URLs : http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/linux-64
http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/noarch
http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/linux-64
http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/noarch
http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r/linux-64
http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r/noarch
package cache : /home/qic220/anaconda3/pkgs
/home/qic220/.conda/pkgs
envs directories : /home/qic220/anaconda3/envs
/home/qic220/.conda/envs
platform : linux-64
user-agent : conda/4.8.3 requests/2.24.0 CPython/3.8.3 Linux/5.4.0-42-generic ubuntu/20.04.1 glibc/2.31
UID:GID : 1000:1000
netrc file : None
offline mode : False
# conda environments:
#
base * /home/qic220/anaconda3
sys.version: 3.8.3 (default, Jul 2 2020, 16:21:59)
...
sys.prefix: /home/qic220/anaconda3
sys.executable: /home/qic220/anaconda3/bin/python
conda location: /home/qic220/anaconda3/lib/python3.8/site-packages/conda
conda-build: /home/qic220/anaconda3/bin/conda-build
conda-convert: /home/qic220/anaconda3/bin/conda-convert
conda-debug: /home/qic220/anaconda3/bin/conda-debug
conda-develop: /home/qic220/anaconda3/bin/conda-develop
conda-env: /home/qic220/anaconda3/bin/conda-env
conda-index: /home/qic220/anaconda3/bin/conda-index
conda-inspect: /home/qic220/anaconda3/bin/conda-inspect
conda-metapackage: /home/qic220/anaconda3/bin/conda-metapackage
conda-render: /home/qic220/anaconda3/bin/conda-render
conda-server: /home/qic220/anaconda3/bin/conda-server
conda-skeleton: /home/qic220/anaconda3/bin/conda-skeleton
conda-verify: /home/qic220/anaconda3/bin/conda-verify
user site dirs:
ALL_PROXY: <set>
CIO_TEST: <not set>
CONDA_ROOT: /home/qic220/anaconda3
C_INCLUDE_PATH: /usr/local/cuda/include:
DEFAULTS_PATH: /usr/share/gconf/ubuntu.default.path
HTTPS_PROXY: <set>
HTTP_PROXY: <set>
LD_LIBRARY_PATH: /opt/ovito-basic-3.3.1-x86_64/lib:/usr/local/cuda/lib64::/opt/vmd-1.9.4a48/lib
MANDATORY_PATH: /usr/share/gconf/ubuntu.mandatory.path
NO_PROXY: <set>
PATH: /home/qic220/anaconda3/bin:/opt/ovito-basic-3.3.1-x86_64/bin:/home/qic220/lammps-stable_29Oct2020/src:/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/software/anaconda3/bin:/opt/vmd-1.9.4a48/bin
REQUESTS_CA_BUNDLE: <not set>
SSL_CERT_FILE: <not set>
WINDOWPATH: 2
But when I tried to install a package, it failed and a ProxyError arised:
$ conda install -c conda-forge hoomd
Collecting package metadata (current_repodata.json): failed
ProxyError: Conda cannot proceed due to an error in your proxy configuration.
Check for typos and other configuration errors in any '.netrc' file in your home directory,
any environment variables ending in '_PROXY', and any other system-wide proxy
configuration settings.
Actually, even I just use conda update conda, there still is ProxyError.
I have check env | grep proxy, nothing shown on my screen.
And I also modified .condsrc as:
proxy_servers:
http: http://username:password#corp.com:8080
https: https://username:password#corp.com:8080
channels:
- defaults
show_channel_urls: true
default_channels:
- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
- http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
custom_channels:
conda-forge: http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
msys2: http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
bioconda: http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
menpo: http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
pytorch: http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
simpleitk: http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
After source ~/.condarc, it still not work. Is anyone have idea to fixed my problem?