Python Full stack day08 notes

Package Installation Method:

1, the compression package needs to be compiled after use

2, RPM package, can be used directly

RPM name contains information: Software name/software version number/system version/CPU architecture (32/64 bit)/file format

The RPM command uses:

1, install software RPM-IVH ***.rpm can install multiple packages at the same time,-I means installation

2, view software rpm-qa-q represents the query, a means all, verify whether the installation can rpm-q the specified software name

RPM-QL Query Software Installation location

Rpm-qi Query Software details

3, remove software rpm-e can add software shorthand can also add the full name, after installation is all written.

--nodeps Ignore dependency removal (same for installation)

4, software upgrade RPM--force Mandatory overwrite installation, can be used for upgrading

RPM Package Network Installation

1, direct installation RPM-IVH http://*****.rpm

2, first download after installation into the file download path wget http://*****.rpm

YUM

Yum itself is written in Python, and Yum is first configured with the Yum Source (Vim/etc/yum.repos.d/local.repo)

Yum Source Configuration method

Configure local Yum:

"Local" name=local Yumbaseurl=file:///medis/centos.
Enabled=1
Gogcheck=0

Yum install software Process:--->/media/centos_. Final-->repodata--> Find the package you need--install

Yum installation reads the Repodata file in the directory to determine dependencies

Custom Yum Source

1. Installing Createro Software

2, Mkdir/test

3. CP package/test

4, Createrepo/test

5. Modify the configuration file

Yum operation

Fuzzy Installation ———— Support *

Remove software ———— Yum Erase software name

Clear Cache ———— Yum Clear all

Create Cache ———— Yum Makecache

Configuring a Yum network source (similar to configuring a local source, changing the file address to a network address)

The retention of the installation package after the Yum installation is complete depends on the Keepcache option in the Yum configuration file yum.conf

The installation package retention location depends on the CACHEDIR option

Source Installation Python3

Process: wget Download source ==> prepare (install gcc/glibc) = = "Unpack = =" Run Configure script add compile parameter = = "Compile (gcc glibc) make===>make install installation

Join the python3.6 command

1, temporary modification, add python3.6 path to $path

2, permanent modification, add the modified path variable to the/etc/profile file, and add the export path, set as a global variable.

Linux Services

SSH Service ———— Remote Connection service

Server to install SSHD, the default will be installed

Why not connect: Need to shut down the firewall

Apache Services

Deployment steps:

1. Prepare the environment---shut down the firewall (service iptables stop), turn off SELinux (Setenforce 0)

2. Installation package httpd (yum install)

3. Modify the configuration file vim/etc/hppd/conf/httpd.conf

Configuration Note: listen:80 documentroot file root directory

4. Restart Service

5. Test to write a file in the root directory of the document, accessed through the browser

Fragmented knowledge

CPU has backward compatibility

View System version: Cat/etc/redhat-release

Temporary add Gateway command: Route add default GW 192.168.11.25

Ping not out of the network may be due to firewall, firewall shutdown: Service iptables stop empty firewall rule: iptables-f

Resolve the domain name two ways:

1, configuration file/etc/hosts priority query

2. DNS

Change computer name:

1. Temporarily modify the hostname host name

2, Permanent modification writing/etc/sysconfig/network

URL Format: Protocol (HTTP///file://) + path (IP address after the domain name is resolved)

Query Service Status: Services * *

Permanently shut down the firewall: chkconfig iptables off

Permanently off SELinux: Modify configuration file/etc/sysconfig/selinux parameter to disables

Python Full stack day08 notes