华为云centos上命令

1.添加新用户

useradd download

passwd download

2.为新用户添加sudo权限

root用户下vi /etc/sudoers

添加 download ALL=(ALL) NOPASSWD:ALL

参考博客：https://blog.csdn.net/lyn1772671980/article/details/80338587

3.安装setuptools

wget https://files.pythonhosted.org/packages/6e/9c/6a003320b00ef237f94aa74e4ad66c57a7618f6c79d67527136e2544b728/setuptools-40.4.3.zip

unzip setuptools-40.4.3.zip

cd setuptools-40.4.3

python setup.py install

4.升级pip

python -m pip install --upgrade --force pip

5.安装所需包

5.1 安装MySQL-python时，需要安装yum install libmysqlclient-dev，若yum报错，可能需要参考

https://blog.csdn.net/weixin_42289193/article/details/85868722

cd /etc/yum.repos.d/

mv  CentOS-Base.repo   CentOS-Base.repo.beifen

5.2 https://www.cnblogs.com/lifan1998/p/10099187.html 删除某些，新建某些

5.3 若是conda虚拟环境 可以直接conda install MySQL-python即可，注意有的版本没有，不带版本号

6.安装java（java官网下载jdk需要登录，比较麻烦，下载网盘里的）

https://pan.baidu.com/s/1ykSB3dsaYR1ow1iaU3FScg&shfl=sharepset

https://www.cnblogs.com/stulzq/p/9286878.html

7.提示telnet不是命令

若系统为centos6.8的话，yum list telnet*显示没有相关的包

则需要到https://vault.centos.org/6.8/os/x86_64/Packages/上下载相关的telnet-xxx.rpm以及telnet-server-xxx.rpm,一般依赖xinetd，安装telnet-server前需要先安装xinetd，然后开启

rpm  -ivh telnet-0.17-48.el6.x86_64.rpm

rpm  -ivh xinetd-2.3.14-40.el6.x86_64.rpm

rpm  -ivh telnet-server-0.17-48.el6.x86_64.rpm

service xinetd start

以上安装好了即可使用telnet命令

8.安装nfs

yum install nfs-utils

9.要是需要用到mongoexport、mongodumps等命令，需要安装mongodb-org-tools

在这里https://repo.mongodb.org/yum/redhat/7/mongodb-org/3.4/x86_64/RPMS/找到合适的版本比如centos6.8适应3.4.2.1,

rpm  -ivh mongodb-org-tools-3.4.2-1.el7.x86_64.rpm

若报如下错误

 strings /lib64/libc.so.6 | grep GLIBC查看是否缺少

下载rpm包

wget http://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/glibc-utils-2.17-55.el6.x86_64.rpm &
wget http://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/glibc-static-2.17-55.el6.x86_64.rpm &
wget http://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/glibc-2.17-55.el6.x86_64.rpm &
wget http://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/glibc-common-2.17-55.el6.x86_64.rpm &
wget http://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/glibc-devel-2.17-55.el6.x86_64.rpm &
wget http://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/glibc-headers-2.17-55.el6.x86_64.rpm &
wget http://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/nscd-2.17-55.el6.x86_64.rpm &

下载好后，安装包如下：

sudo rpm -Uvh *-2.17-55.el6.x86_64.rpm --force --nodeps
安装后再次查看strings /lib64/libc.so.6 | grep GLIBC

发现可以了

继续执行 rpm  -ivh mongodb-org-tools-3.4.2-1.el7.x86_64.rpm
输入 mongexport --help查看