s11Docker+DevOps实战--过程和工具

# 安装 gitlab ci runner

curl -L https://packages.gitlab.com/install/repositories/runner/gitlab-ci-multi-runner/script.rpm.sh |sudo bash
 sudo yum install gitlab-ci-multi-runner -y

sudo gitlab-ci-multi-runner status

sudo usermod -aG docker gitlab-runner
 sudo service docker restart

sudo gitlab-ci-multi-runner restart

# 本地gitlab地址
http://gitlab.example.com/

# 注册runner 
 sudo gitlab-ci-multi-runner register
gitlab-ci 集成服务器注册runner（即不同的集成环境供gitlab调用）

token 在项目的CI选项里面，可以找到
 一般不要把runner 绑定到一个项目，这样其他项目也可以调用。（除特殊项目需绑定以保护）

    [root@jenkins vagrant]# sudo gitlab-ci-multi-runner register
     Running in system-mode.

    Please enter the gitlab-ci coordinator URL (e.g. https://gitlab.com/):
     http://gitlab.example.com
     Please enter the gitlab-ci token for this runner:
     gWCZZjwskFtS5n4XT6kV
     Please enter the gitlab-ci description for this runner:
     [jenkins]: gitlab-ci
     Please enter the gitlab-ci tags for this runner (comma separated):
     python3.4
     Whether to run untagged builds [true/false]:
     [false]:
     Whether to lock Runner to current project [true/false]:
     [false]:
     Registering runner... succeeded                     runner=gWCZZjws
     Please enter the executor: docker, shell, ssh, kubernetes, docker-ssh, parallels, virtualbox, docker+machine, docker-ssh+machine:
     docker
     Please enter the default Docker image (e.g. ruby:2.1):
     python:3.4
     Runner registered successfully. Feel free to start it, but if it's running already the config should be automatically reloaded!

查看
    [root@jenkins vagrant]# sudo gitlab-ci-multi-runner list
     Listing configured runners                          COnfigFile=/etc/gitlab-runner/config.toml
     jenkins                                             Executor=shell Token=d790b6db10f7f7d3b8547519818948 URL=http://10.0.0.190/
     gitlab-ci                                           Executor=shell Token=ad11a86454c6552424fbf0d6c8b029 URL=http://gitlab.example.com
     gitlab-ci                                           Executor=docker Token=0304db778d4e040d25234594dbe363 URL=http://gitlab.example.com
     gitlab-ci                                           Executor=docker Token=b57303fbaf1623a5d8c42723606aad URL=http://gitlab.example.com
     [root@jenkins vagrant]# sudo gitlab-ci-multi-runner verify
     Running in system-mode.
     Verifying runner... is alive                        runner=ad11a864
     Verifying runner... is alive                        runner=0304db77
     Verifying runner... is alive                        runner=b57303fb

 .gitlab-ci.yml

stages:
  - style
  - test
  - deploy
  - release

pep8:
  stage: style
  script:
    - pip install tox
    - tox -e pep8
  tags:
    - python2.7
  except:
    - tags

unittest-py27:
  stage: test
  script:
    - pip install tox
    - tox -e py27
  tags:
    - python2.7
  except:
    - tags

unittest-py34:
  stage: test
  script:
    - pip install tox
    - tox -e py34
  tags:
    - python3.4
  except:
    - tags

docker-deploy:
  stage: deploy
  script:
    - docker build -t flask-demo .
    - if [ $(docker ps -aq --filter name=web)];then docker rm -f web;fi
    - docker run -d -p 5000:5000 --name web flask-demo
  tags:
    - demo
  only:
    - master

docker-image-release:
  stage: release
  script:
    - docker build -t registry.example.com:5000/flask-demo:$CI_COMMIT_TAG .
    - docker push registry.example.com:5000/flask-demo:$CI_COMMIT_TAG
  tags:
    - demo
  only:
    - tags

项目根目录下的集成文件    .gitlab-ci.yml     配置集成和部署的步骤 （pipeline）


    tags:            # 执行环境
      - runner

    except:          # 排除，tags不触发
      - tags

    only:          # 只有master更改才触发
      - master

    stages:        # 流程，有哪些步骤
      - style
      - test
      - dploy
      - release

    job name:     #job名称 ，属于某一个流程   

language: python
env:
  - TOXENV=py27
  - TOXENV=py34
  - TOXENV=pep8
  - TOXENV=docs

install:
  - pip install tox
  - pip install coveralls
script:
  - tox

after_success:
  coveralls --verbose

首先配置上行的真正的dns服务器地址，创建文件：
  vi /etc/resolv.dnsmasq
添加内容：
   nameserver 114.114.114.114
   nameserver 8.8.8.8
# 置本地解析规则，这才是我们的真实目的。新建配置文件
vi /etc/dnsmasqhosts
# 加解析规则，其中192.168.205.160是本地 gitlab 服务器地址
  192.168.205.160 gitlab.example.com
修改 dnsmasq 配置文件，指定使用上述我们自定义的配置文件

vi /etc/dnsmasq.conf 修改下述两个配置
  resolv-file=/etc/resolv.dnsmasq
  addn-hosts=/etc/dnsmasqhosts

回到宿主，重启dns-server容器服务。
  docker restart dns-server
这时候这台docker host就是一个DNS服务器了，假如他的地址是192.168.205.15

[vagrant@ci ~]$ more /etc/resolv.conf
# Generated by NetworkManager
#nameserver 10.0.2.3
nameserver 192.168.205.15

执行
docker exec-it dns-server/bin/sh
添加一条新的记录
/ # more /etc/dnsmasqhosts
192.168.205.160 gitlab.example.com
192.168.205.15 reqistry.example.com