Shulou(Shulou.com)06/03 Report--

As a continuously integrated and continuously deployed software, Jenkins is an open source software written by java.

Work as a very popular CI (continuous Integration) for building and testing various projects

The main function of Jenkins is to monitor the execution of repetitive work, such as the construction of software projects or jobs set up under cron

DEV-> GIT-> CI (continuous Integration)-> CD (continuous deployment)

The process of use:

Dev client

1. Set up the git server, and use git add. + git commit-m 'project' upload to local file

2.Git tag v 1.0-tag git push,git push-tag push up

Git end

3. Log in to the github server, create a new project and group, and push the client's git repository to the project using http

Jenkins server

4. On the jenkins server, set up your own project, add git-parameter, and enter gitlab-related url to enable it to communicate with gitlab's project

5. You can see various versions uploaded to gitlab in build with parameter after the main menu. By starting to build, download the project on gitlab to jenkens, build web, and package the files on web for easy distribution.

6. Write script to realize automatic deployment and version update of files in Jenkins

This article focuses on the automatic management of step 5 and 6:

Step 5: deploy the files on Jenkins to the http share with one click

Http automatic distribution of Jenkins: add build steps in the project settings

Newcodes_$ {freetag}: the path is / var/lib/jenkins/workspace/freesttle

# put the version file from newcodes_$ {freetag} to deploy_dir

Shell code

Deploy_dir= / var/www/html/deploy/packages/

Cp-r newcodes_$ {freetag} $deploy_dir

Rm-rf $deploy_dir/newcodes_$ {freetag} / .git # delete the .git file in the original file after the copy is deleted

Cd $deploy_dir

Package the copied version file under the new path

Tar czf newcodes_$ {freetag} .tar.gz newcodes_$ {freetag}

Rm-rf newcodes_$ {freetag} # Delete the copied source file, leaving only the tar package

Md5sum newcodes_$ {freetag} .tar.gz | awk'{print $1}'> newcodes_$ {freetag} .tar.gz.md5

# calculate the tar package check value with md5 and store it in the corresponding file

Create a new mp_live_version version update function

# New version (live_version), previous version (lastest_version)

# [- e exists this path] & & writes live_version content to lastest_version

# write the new input as the new version

[- e / var/www/html/deploy/live_version] & & cat / var/www/html/deploy/live_version > / var/www/html/deploy/last_version

Echo ${mp_live_ver} > / var/www/html/deploy/live_version

Step 6: download the latest version file from jenkins and automatically complete the deployment (web web deployment)

# live_version (latest version) and lastest_version (previous version) version files are available under the server / var/www/html. Provide packages/XXX_1.tar.gz files

Import requests

From urllib import request

Import hashlib

Import os

Import tarfile

Def get_data (url): # responsible for opening remote files in text format

R = requests.get (url) # download local address

Return r.text # returns text format

Def download (url,fname): # download file, previous download script

Html = request.urlopen (url) # download the latest tar package

With open (fname, 'wb') as fobj:

While True:

Data = html.read (1024)

If not data:

Break

Fobj.write (data)

Def check_md5 (fname): # check the md5 value and calculate the md5 value of the fname file

M = hashlib.md5 ()

With open (fname, 'rb') as fobj:# opens the file and reads it step by step

While True:

Data = fobj.read (1024)

If not data:

Break

M.update (data) # updates each md5 value

Return m.hexdigest () # converts md5 values into readable form

Def deploy (app): # deployment, first cut to the directory, extract the tar, and create a shortcut

Os.chdir ('/ var/www/packages') # cd to this path

Tar = tarfile.open (app, 'rblogz') # unpack the files in the app path

Tar.extractall ()

Tar.close ()

Src = app.replace ('.tar.gz','') # replace .tar.gz with''fetch / var/www/html/packages

Dst ='/ var/www/html/mysite' # the path to create the shortcut

If os.path.exists (dst): # whether the created path already exists. If so, delete the path and create it again.

Os.unlink (dst)

Os.symlink (src,dst) # create a shortcut

If _ _ name__ = ='_ _ main__':

Ver = get_data ('http://192.168.122.59/deploy/live_version') # version information is under / var/www/html/

App_name = 'myproject_%s.tar.gz'% ver # File name of the package

App_url = 'http://192.168.122.59/packages/' + app_name # network file path of the package

App_path = os.path.join ('/ var/www/packages',app_name) # complete download path to the local machine

Download (app_url,app_path) # downloaded to this

Locals_md5 = check_md5 (app_path)

Remote_md5 = get_data (app_url+'.md5'). Strip () # download the remote md5 file and remove the / n after the content

If locals_md5 = = remote_md5:

Deploy (app_path) # if there is no problem with md5 verification, extract this version of the file and create a shortcut

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.