DevOps方案探究

 

第1章 概述

1.1 背景

以前的發佈流程都是單節點，不具有擴展性，如今設計了可擴展的發佈流程；發佈流程分兩個項目

Job_manager和pool

 

 

 

工做流程：

開發人員提交代碼到Git版本倉庫；

Jenkins人工/定時觸發項目構建；

Jenkins拉取代碼、代碼編碼、打包鏡像、推送到鏡像倉庫；

Jenkins在Docker主機建立容器併發布。

如今的方案:

開發人員提交代碼到VisualStudioTeamFoundationServer(tfs)版本倉庫；

Jenkins人工/定時觸發項目構建；

Jenkins拉取代碼、代碼編碼,重啓容器(容器掛載代碼，提早啓動好容器)

問題：

1打包鏡像的過程不穩定，是在有外網的環境下，打包好以後上傳鏡像到環境中；

2在原有的環境下更新代碼git pull ,過程更快點，可是開發人員有直接登錄服務器更改代碼的習慣，git pull自動更新會產生問題；

3 想把容器做爲一個主機管理提供給開發，pool容器應用官方容器不能安裝openssh-server，其餘都可以；

4 更新軟件包須要手動加載；

5 業務量不大，現有的發佈流程，是一個基於非docker環境的一個想法；如下的環境研究也是基於現有環境，作的多主機擴展流程；

1.2 Job_manager發佈流程

利用ansible 實現多主機操做，由於考慮灰度發佈，因此主機分組；

[root@honey1 cae_job_develop]# cat /etc/ansible/hosts

[develop]

*.*.*.*

*.*.*.*

*.*.*.*

[develop1]

*.*.*.*

[develop2]

*.*.*.*

*.*.*.*

發佈總腳本

[root@honey1 cae_job_develop]# cat deploy_job.sh

#判斷和建立鎖文件是防止多人同時發佈；

#!/bin/bash

if [ -f /tmp/deploy.lock ]

then

    echo "Somebody is Posting"

    exit

fi                                

touch /tmp/deploy.lock   

#日誌記錄功能

echo "`date` start deploy cae_job_manager" > /var/log/deploy_job.log

cd /www

#拉取代碼

git clone http://*.cae_job_manager >/dev/null && echo "git clone cae_job_manager success" >>/var/log/deploy_job.log

#打包代碼，代碼中有許多遺留文件；保險起見只能徹底打包，包括隱藏文件；

cd /www

zip -r cae_job_manager.zip cae_job_manager/ >/dev/null && echo "zip cae_job_manager.zip success" >>/var/log/deploy_job.log 

#發佈代碼到主機節點的過分位置

ansible develop -m copy -a "src=/www/cae_job_manager.zip dest=/tmp" >/dev/null && echo "copy cae_job_manager.zip success" >>/var/log/deploy_job.log 

#在一部分節點上刪除原有代碼

ansible develop1 -m file -a "path=/www/cae_job_manager state=absent" >/dev/null && echo "develop1 delete cae_job_manager success" >>/var/log/deploy_job.log

#發佈代碼到正式目錄下

ansible develop1 -m command -a "unzip /tmp/cae_job_manager.zip -d /www" >/dev/null && echo "develop1 unzip cae_job_manager.zip success" >> /var/log/deploy_job.log

ansible develop1 -m script -a "/www/cae_job_develop/check.sh" && echo "develep1 checkout origin/develop success" >> /var/log/deploy_job.log

#發佈環境配置文件 

ansible develop1 -m copy -a "src=/www/cae_job_develop/settings_local.py dest=/www/cae_job_manager/cae_job_manager/" && echo "develep1 cp settings_local.py success" >> /var/log/deploy_job.log 

#發佈程序啓動文件

ansible develop1 -m copy -a "src=/www/cae_job_develop/conf/ dest=/www/cae_job_manager/conf/" && echo "develop1 cp supervisor config success" >> /var/log/deploy_job.log

#重啓容器，發佈代碼

ansible develop1 -m script -a "/www/cae_job_develop/boot_job.sh" && echo "develop1 reboot docker success" >> /var/log/deploy_job.log 

ansible develop2 -m file -a "path=/www/cae_job_manager state=absent" >/dev/null && echo "develop2 delete cae_job_manager success" >>/var/log/deploy_job.log

ansible develop2 -m command -a "unzip /tmp/cae_job_manager.zip -d /www" >/dev/null && echo "develop2 unzip cae_job_manager success" >>/var/log/deploy_job.log

ansible develop2 -m script -a "/www/cae_job_develop/check.sh" && echo "develep2 checkout origin/develop success" >> /var/log/deploy_job.log

ansible develop2 -m copy -a "src=/www/cae_job_develop/settings_local.py dest=/www/cae_job_manager/cae_job_manager/" && echo "develep2 cp settings_local.py success" >> /var/log/deploy_job.log

ansible develop2 -m copy -a "src=/www/cae_job_develop/conf/ dest=/www/cae_job_manager/conf/" && echo "develop2 cp supervisor config success" >> /var/log/deploy_job.log

ansible develop2 -m script -a "/www/cae_job_develop/boot_job.sh" && echo "develop2 reboot docker success" >> /var/log/deploy_job.log

#刪除過分目錄的文件

ansible develop -m file -a "path=/tmp/cae_job_manager.zip state=absent"

#刪除發佈節點的代碼目錄

/usr/bin/rm /www/cae_job_manager* -rf 

#刪除發佈鎖文件

/usr/bin/rm /tmp/deploy.lock -f 

echo "`date` finish deploy cae_job_manager" >> /var/log/deploy_job.log

cat /var/log/deploy_job.log

[root@honey1 cae_job_develop]# cat check.sh

#!/bin/bash

cd /www/cae_job_manager/ && git pull

cd /www/cae_job_manager/ && git checkout origin/develop

[root@honey1 cae_job_develop]# ls

boot_job.sh  check.sh  conf  deploy_job.sh  settings_local.py

[root@honey1 cae_job_develop]# cat boot_job.sh

#!/bin/bash

chmod +x /www/cae_job_manager/docker_run.sh

for i in `docker ps |grep cae_job|awk '{print $NF}'`

do

   docker restart $i

done

conf裏是supervisor的配置文件

[root@honey1 cae_job_develop]# ls conf/

cae_job_manager.conf  celery_beat.conf  celery_worker.conf  message_center.conf  scrapy_monitor.conf  visual_monitor.conf

思考：主機節點上的docker 容器至關於環境；代碼掛載到容器上；有一些代碼不常變視爲一個服務；代碼更新的主要是job_manager和pool;另外這個發佈沒有回滾步驟；開發有快速回滾分支，經過回滾分支回滾；

1.3 Pool部署

[root@honey1 pool_develop]# ls

boot_pool.sh  deploy_pool_1.sh  deploy_pool.sh  install  update_pool.sh

[root@honey1 pool_develop]# cat deploy_pool.sh

#!/bin/bash

sv1=develop1

sv2=develop2

if [ -f /tmp/pool.lock ]

then

    echo "Somebody is Posting"

    exit

fi

touch /tmp/pool.lock

#這個環境代碼須要npm構建和bower構建保險起見，並且多主機構建過程時間較長；因此提早把代碼放到部署環境中；經過git pull更新；

ansible $sv1 -m script -a "/www/pool_develop/update_pool.sh $sv1"

#這個環境代碼應用後的數據，會存在部署的代碼項目裏；因此須要備份這部分數據

ansible $sv1 -m command -a "cp -a /app/pool/data /tmp"

#刪除源代碼

ansible $sv1 -m file -a "path=/app/pool state=absent"

#複製代碼到正式目錄下，而後構建代碼；考慮到代碼環境問題，沒有先構建，在部署代碼到節點環境；

ansible $sv1 -m script -a "/www/pool_develop/deploy_pool_1.sh $sv1"

#把備份的數據，放到指定的位置；

ansible $sv1 -m command -a "mv /tmp/data /app/pool/"

#重啓應用程序；

ansible $sv1 -m script -a "/www/pool_develop/boot_pool.sh $sv1"

ansible $sv2 -m script -a "/www/pool_develop/update_pool.sh $sv2"

ansible $sv2 -m command -a "cp -a /app/pool/data /tmp"

ansible $sv2 -m file -a "path=/app/pool state=absent"

ansible $sv2 -m script -a "/www/pool_develop/deploy_pool_1.sh $sv2"

ansible $sv2 -m command -a "mv /tmp/data /app/pool/"

ansible $sv2 -m script -a "/www/pool_develop/boot_pool.sh $sv2"

#刪除鎖文件

rm /tmp/pool.lock -f

[root@honey1 pool_develop]# cat update_pool.sh

#!/bin/bash

echo "`date` $1 start deploy pool" > /var/log/deploy_pool.log

chattr -i /deploy/

cd /deploy/pool && git pull

cd /deploy/pool && git checkout origin/develop

cd /deploy/pool/poolui && npm install >/dev/null && echo "$1 deploy npm install success" >> /var/log/deploy_pool.log

cd /deploy/pool/poolui && bower install --allow-root >/dev/null && echo "$1 deploy bower install success" >> /var/log/deploy_pool.log

[root@honey1 pool_develop]# cat deploy_pool_1.sh

#!/bin/bash

cp -a /deploy/pool/ /app/

chattr +i /deploy/

chmod +x /app/pool/docker/*

cd /app/pool/poolui/ && npm install >/dev/null && echo "$1 app npm install success" >>/var/log/deploy_pool.log

cd /app/pool/poolui/ && bower install --allow-root >/dev/null && echo "$1 app bower install success" >>/var/log/deploy_pool.log

cd /app/pool/poolui/ && npm run build >/dev/null && echo "$1 app build success" >>/var/log/deploy_pool.log

[root@honey1 pool_develop]# cat boot_pool.sh

#!/bin/bash

for i in `docker ps |grep pool|awk '{print $NF}'`

do

    docker restart $i

done

if [ $? -eq 0 ]

then

    echo "`date` $1 pool docker reboot success" >> /var/log/deploy_pool.log

    cat /var/log/deploy_pool.log

fi

1.4 job_manager docker 化發佈

Dockfile一鍵化的發佈，網絡緣由，docker build 不穩定，有些步驟需外網；

root@honey1:/www# ls

cae_job_manager  cae_job_manager1  cae_job_manager.conf  Dockerfile  settings_local.py

root@honey1:/www# cat Dockerfile

FROM ubuntu:16.04

 

# Install packages

RUN apt-get update && apt-get install -y \

    libmysqlclient-dev \

    nginx \

    python-dev \

    python-mysqldb \

    python-setuptools \

    python-pip \

    python-lxml \

    openssh-server \

    net-tools \

    vim \

    git \

    lrzsz \

    supervisor

RUN apt-get install -y libxml2 libxml2-dev libxslt-dev

RUN apt-get -y install tzdata && \

  ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

 

RUN mkdir -p /www/cae_job_manager

RUN mkdir /www/log

RUN mkdir /www/static

RUN mkdir /var/log/celery

RUN useradd celery

 

RUN pip install --upgrade pip

RUN pip install --upgrade setuptools

RUN pip install nltk

RUN pip install networkx

RUN pip install https://s3-us-west-2.amazonaws.com/jdimatteo-personal-public-readaccess/nltk-2.0.5-https-distribute.tar.gz

WORKDIR /www/

RUN git clone http://123:5000/tfs/DefaultCollection/CAE/_git/cae_job_manager

WORKDIR /www/cae_job_manager

RUN git checkout origin/develop

ADD settings_local.py /www/cae_job_manager/cae_job_manager/

ADD cae_job_manager.conf /etc/supervisor/conf.d/

RUN pip install -r requirements.txt

RUN pip install uwsgi

RUN pip install pymysql

 

# Configure Nginx

RUN ln -s /www/cae_job_manager/conf/nginx_cae.conf /etc/nginx/sites-enabled/

RUN rm /etc/nginx/sites-enabled/default

 

 

# Run Supervisor (i.e., start MySQL, Nginx, and Gunicorn)

#CMD ["/usr/bin/supervisord","-n","-c","/etc/supervisor/supervisord.conf"]

#RUN chmod 777 docker_run.sh

#CMD ["sh", "docker_run.sh"]

ENTRYPOINT ["/www/cae_job_manager/docker_run.sh"]

登錄harbor,須要設置docker才能登錄

root@honey1:/etc/docker# cat daemon.json

{

  "registry-mirrors": ["http://hub-mirror.c.163.com"],

  "insecure-registries":["192.168.138.111:8885"]

}

root@honey1:/etc/docker# docker login 192.168.138.111:8885

Username: admin

Password:

Login Succeeded

構想基礎鏡像[主要是構建環境，預先安裝必要的安裝包和建立必要的目錄]，外網環境下；

root@honey1:/www# ls

cae_job_manager.conf  Dockerfile  DockerfileBase  DockerfileTest  requirements.txt  settings_local.py

root@honey1:/www# docker build -t cae_job_manager:test2 .

root@honey1:/www# docker tag cae_job_manager:test2 192.168.138.111:8885/ispider/cae_job_manager:base

root@honey1:/www# docker push 192.168.138.111:8885/ispider/cae_job_manager:base

root@honey1:/www# cat DockerfileBase

FROM ubuntu:16.04

 

# Install packages

RUN apt-get update && apt-get install -y \

    libmysqlclient-dev \

    nginx \

    python-dev \

    python-mysqldb \

    python-setuptools \

    python-pip \

    python-lxml \

    openssh-server \

    net-tools \

    vim \

    git \

    lrzsz \

    supervisor

RUN apt-get install -y libxml2 libxml2-dev libxslt-dev

RUN apt-get -y install tzdata && \

  ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

 

#RUN mkdir -p /www/

RUN mkdir -p /www/log

RUN mkdir /www/static

RUN mkdir /var/log/celery

RUN useradd celery

 

RUN pip install --upgrade pip

RUN pip install --upgrade setuptools

RUN pip install nltk

RUN pip install networkx

RUN pip install https://s3-us-west-2.amazonaws.com/jdimatteo-personal-public-readaccess/nltk-2.0.5-https-distribute.tar.gz

#WORKDIR /www/

#RUN git clone http://123/tfs/DefaultCollection/CAE/_git/cae_job_manager

#RUN git checkout origin/develop

#ADD settings_local.py /www/cae_job_manager/cae_job_manager/

ADD requirements.txt /www/

WORKDIR /www/

RUN pip install -r requirements.txt

RUN pip install uwsgi

RUN pip install pymysql

 

# Configure Nginx

#RUN ln -s /www/cae_job_manager/conf/nginx_cae.conf /etc/nginx/sites-enabled/

#RUN rm /etc/nginx/sites-enabled/default

 

 

# Run Supervisor (i.e., start MySQL, Nginx, and Gunicorn)

#CMD ["/usr/bin/supervisord","-n","-c","/etc/supervisor/supervisord.conf"]

#RUN chmod 777 docker_run.sh

#CMD ["sh", "docker_run.sh"]

#ENTRYPOINT ["/www/cae_job_manager/docker_run.sh"]

1. 從harbor加載基礎鏡像時間長；故提早加載好；

2. 構建發佈docker

a.拉取代碼

b.放置配置文件

c.更新python安裝包

3. 刪除舊的容器，運行新的容器實例；

 

root@inspur_spider07:/www# ls

cae_job_manager.conf   Dockerfile     settings_local.py

root@inspur_spider07:/www# docker build -t cae_job_manager:prod2 .

root@inspur_spider07:/www# cat Dockerfile

FROM 192.168.138.111:8885/ispider/cae_job_manager:base

 

# Install packages

WORKDIR /www/

RUN git clone http://123:5000/tfs/DefaultCollection/CAE/_git/cae_job_manager

WORKDIR /www/cae_job_manager

RUN git checkout origin/develop

ADD settings_local.py /www/cae_job_manager/cae_job_manager/

ADD cae_job_manager.conf /etc/supervisor/conf.d/

RUN pip install -r requirements.txt

RUN pip install uwsgi

RUN pip install pymysql

 

# Configure Nginx

RUN ln -s /www/cae_job_manager/conf/nginx_cae.conf /etc/nginx/sites-enabled/

RUN rm /etc/nginx/sites-enabled/default

 

 

# Run Supervisor (i.e., start MySQL, Nginx, and Gunicorn)

#CMD ["/usr/bin/supervisord","-n","-c","/etc/supervisor/supervisord.conf"]

#RUN chmod 777 docker_run.sh

#CMD ["sh", "docker_run.sh"]

ENTRYPOINT ["/www/cae_job_manager/docker_run.sh"]

1.5 pool docker化發佈

pool採用開源項目，它的官方鏡像有許多限制，例如不能安裝git,openssh,也就不能把其做爲一個服務器節點管理；

Docker化的發佈流程

拉取代碼

cd /inspur/pool

git clone http://tfs.123:5000/tfs/DefaultCollection/CAE/_git/pool

git pull

git checkout origin/develop

放置本地配置文件cat /inspur/pool/pool_server/pool_server/settings_local.py     

編譯代碼cd /inspur/pool/poolui

sudo npm install

sudo bower install --allow-root

sudo npm run build

打包代碼 cd /inspur/pool/

         Docker build -t pool:run .

運行容器 1.刪除以前的運行容器；

         2.建立運行實例；

生產應用方案

拉取代碼，放置配置文件，npm安裝包，bower安裝包 都提早作好，這些較耗費時間；

更新代碼

cd /inspur/pool

git pull

git checkout origin/develop

cd /inspur/pool/poolui

sudo npm run build

docker 採用掛載的方式，應用程序；

設想方案

經過打包代替掛載，數據文件更新後丟失，可是可以更新python安裝包；加載數據文件和代碼項目在一塊不合理；

利用掛載容器的方式，更新python安裝包docker exec -it pool1 pip install -r /app/pool_server/requirements.txt；

root@honey1:/pool/pool# cat Dockerfile

FROM pool:h

ADD . /app

RUN ln -fs /app/nginx/* /etc/nginx/

RUN pip install -r /app/pool_server/requirements.txt

RUN ln -s /app/supervisord/supervisord.conf /etc/supervisor/

EXPOSE 9001

ENTRYPOINT ["/app/docker/entry"]

pool基礎鏡像

root@honey1:/pool# ls

Dockerfile  Dockerfile.s  pool  pool.tar.gz  requirements.txt

Requirements.txt 是pool 的項目安裝包

root@honey1:/pool# cat Dockerfile

FROM scrapinghub/pool

WORKDIR /app

 

RUN apt-get update && apt-get install -y build-essential python-dev

RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

RUN pip install uwsgi

RUN pip install gevent

 

RUN pip install supervisor

RUN mkdir /etc/supervisor/

RUN mkdir /var/log/supervisor

RUN ln -s /usr/local/bin/supervisord /usr/bin/supervisord

RUN ln -s /usr/local/bin/supervisorctl /usr/bin/supervisorctl

ADD requirements.txt /root

RUN pip install -r /root/requirements.txt

 

#RUN mkdir /etc/supervisor/conf.d/

#RUN echo_supervisord_conf > /etc/supervisor/supervisord.conf

#RUN ln -s /app/supervisord/supervisord.conf /etc/supervisor/

 

EXPOSE 9001

#ENTRYPOINT ["/app/docker/entry"]

pool更新，要切換到項目裏，宿主機要安裝docker, nodejs, bower

root@honey1:/pool/pool# ls

bin      docker      Dockerfile_backup  LICENSE  nginx        pool_server  provision.sh  slybot  splash_utils  Vagrantfile

CHANGES  Dockerfile  docs               mytest   pool.conf  poolui       README.md     slyd    supervisord   VERSION

root@honey1:/pool/pool# cat Dockerfile

FROM pool:h

ADD . /app

RUN ln -fs /app/nginx/* /etc/nginx/

RUN pip install -r /app/pool_server/requirements.txt

RUN ln -s /app/supervisord/supervisord.conf /etc/supervisor/

EXPOSE 9001

ENTRYPOINT ["/app/docker/entry"]