欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

jenkins + supervisor + ansible 实现netcore程序的多机一键部署

程序员文章站 2022-03-12 17:49:38
上一篇我们简单的说到了使用jenkins+supervisor实现了一个单机版的多副本部署,但是在更多的场景下还是需要netcore程序的多机一键部署,那么多 机器间如何分发呢? 肯定不能使用scp这么低级别的命令,所以你的技术栈中要引进ansible,用它来实现这个功能不要太爽。 一:ansibl ......

  

  上一篇我们简单的说到了使用jenkins+supervisor实现了一个单机版的多副本部署,但是在更多的场景下还是需要netcore程序的多机一键部署,那么多

机器间如何分发呢? 肯定不能使用scp这么低级别的命令,所以你的技术栈中要引进ansible,用它来实现这个功能不要太爽。

  

一:ansible部署

     ansible是一个自动化运维工具,实现方法就是在主控机上通过ssh免秘钥的方式自动分发你的程序到多台机器上,所以第一步你要配置主控机到远程机

的ssh免秘钥登陆。我这里有两台机器:

    10.25.198.96   【主控机】

    10.25.59.59     【远程机】

大概的一个简图就是这样。

jenkins + supervisor + ansible 实现netcore程序的多机一键部署

 

1. 免密登陆

[root@localhost ~]# ssh-keygen -t rsa -p ''
generating public/private rsa key pair.
enter file in which to save the key (/root/.ssh/id_rsa): 
created directory '/root/.ssh'.
your identification has been saved in /root/.ssh/id_rsa.
your public key has been saved in /root/.ssh/id_rsa.pub.
the key fingerprint is:
40:72:cc:f4:c3:e7:15:c9:9f:ee:f8:48:ec:22:be:a1 root@localhost.localdomain
the key's randomart image is:
+--[ rsa 2048]----+
|    .++    ...   |
|     +oo    o.   |
|      . + . .. . |
|       . + .  o  |
|        s .  .   |
|           .  .  |
|        .   oo   |
|       ....o...  |
|      e.oo .o..  |
+-----------------+
[root@localhost ~]# ls /root/.ssh/id_rsa
/root/.ssh/id_rsa
[root@localhost ~]# ls /root/.ssh
id_rsa  id_rsa.pub
[root@localhost ~]# scp /root/.ssh/id_rsa.pub root@10.25.59.59:/root/.ssh/authorized_keys
root@10.25.59.59's password: 
id_rsa.pub                                                                100%  408     0.4kb/s   00:00 
[root@localhost ~]# cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys

 

2.  安装ansible

   因为ansible是python写的,通常有两种安装方式:yum 和 pip install 。 我这里就采用yum安装,安装完成之后,直接键入ansible命令如下:

[root@localhost ~]# ansible
error! unexpected exception, this is probably a bug: (cryptography 0.8.2 (/usr/lib64/python2.7/site-packages), requirement.parse('cryptography>=1.1'))
the full traceback was:

 

     可以看到上面报错了,如果你不了解python,还是有点头疼的,上面说的是你的cryptography包版本太低,需要安装>=1.1的,你可以到pipy上down一个

新包下来。       

jenkins + supervisor + ansible 实现netcore程序的多机一键部署

 

 

对了,如果你的pip也没装的话,那你还是先通过yum install pip吧。

[root@localhost ~]# pip install cryptography==2.5
deprecation: python 2.7 will reach the end of its life on january 1st, 2020. please upgrade your python as python 2.7 won't be maintained after that date. a future version of pip will drop support for python 2.7.
collecting cryptography==2.5
  downloading https://files.pythonhosted.org/packages/17/fd/4c2c8953a9dfe38fbe0c3adafb6355540bd98cef70cc82734acb0a4c0e2f/cryptography-2.5-cp27-cp27mu-manylinux1_x86_64.whl (2.4mb)
    100% |████████████████████████████████| 2.4mb 14kb/s 
collecting cffi!=1.11.3,>=1.8 (from cryptography==2.5)
  downloading https://files.pythonhosted.org/packages/14/dd/3e7a1e1280e7d767bd3fa15791759c91ec19058ebe31217fe66f3e9a8c49/cffi-1.11.5-cp27-cp27mu-manylinux1_x86_64.whl (407kb)
    100% |████████████████████████████████| 409kb 15kb/s 
requirement already satisfied: six>=1.4.1 in /usr/lib/python2.7/site-packages (from cryptography==2.5) (1.9.0)
collecting ipaddress; python_version < "3" (from cryptography==2.5)
  downloading https://files.pythonhosted.org/packages/fc/d0/7fc3a811e011d4b388be48a0e381db8d990042df54aa4ef4599a31d39853/ipaddress-1.0.22-py2.py3-none-any.whl
collecting asn1crypto>=0.21.0 (from cryptography==2.5)
  downloading https://files.pythonhosted.org/packages/ea/cd/35485615f45f30a510576f1a56d1e0a7ad7bd8ab5ed7cdc600ef7cd06222/asn1crypto-0.24.0-py2.py3-none-any.whl (101kb)
    100% |████████████████████████████████| 102kb 34kb/s 
requirement already satisfied: enum34; python_version < "3" in /usr/lib/python2.7/site-packages (from cryptography==2.5) (1.0.4)
requirement already satisfied: pycparser in /usr/lib/python2.7/site-packages (from cffi!=1.11.3,>=1.8->cryptography==2.5) (2.14)
installing collected packages: cffi, ipaddress, asn1crypto, cryptography
  found existing installation: cffi 0.8.6
    uninstalling cffi-0.8.6:
      successfully uninstalled cffi-0.8.6
  found existing installation: cryptography 0.8.2
    uninstalling cryptography-0.8.2:
      successfully uninstalled cryptography-0.8.2
successfully installed asn1crypto-0.24.0 cffi-1.11.5 cryptography-2.5 ipaddress-1.0.22

   

      再输入ansbile如果没有报错那就恭喜你搞定了,否则的话还是迭代循环吧。

[root@localhost ~]# ansible
usage: ansible <host-pattern> [options]

define and run a single task 'playbook' against a set of hosts

 

3.  ansible简单介绍

    安装好了ansible之后,在/etc/ansible目录下会有三个文件,如下:

[root@localhost ~]# cd /etc/ansible
[root@localhost ansible]# ls
ansible.cfg  hosts  roles

 

 《1》 ansible.cfg

        这个是ansible自身的config文件,默认就这样,我们暂不管。

《2》 hosts

      这里面配置的就是ansible要操控的远程机器,比如我在末尾加上的10.25.59.59 和  10.25.198.96 两台我要分发的机器。

# this is the default ansible 'hosts' file.
#
# it should live in /etc/ansible/hosts
#
#   - comments begin with the '#' character
#   - blank lines are ignored
#   - groups of hosts are delimited by [header] elements
#   - you can enter hostnames or ip addresses
#   - a hostname/ip can be a member of multiple groups

# ex 1: ungrouped hosts, specify before any group headers.

## green.example.com
## blue.example.com
## 192.168.100.1
## 192.168.100.10

# ex 2: a collection of hosts belonging to the 'webservers' group

## [webservers]
## alpha.example.org
## beta.example.org
## 192.168.1.100
## 192.168.1.110

# if you have multiple hosts following a pattern you can specify
# them like this:

## www[001:006].example.com

# ex 3: a collection of database servers in the 'dbservers' group

## [dbservers]
## 
## db01.intranet.mydomain.net
## db02.intranet.mydomain.net
## 10.25.1.56
## 10.25.1.57

# here's another example of host ranges, this time there are no
# leading 0s:

## db-[99:101]-node.example.com

[memsql-test]
10.25.59.59
10.25.198.96

 

《3》 roles

      一般来说ansible推荐都是以role模板格式作为playbook来实现非常强大的功能,比如这个地方:  都是一些供你学习的role模板。

 

4. 编写playbook

《1》 deploy.yaml

---
- hosts: all
  
  remote_user: root

  vars:
    inifile: "memsql-test"
    program: "memsql.test"
    workspace: "/var/lib/jenkins/workspace/{{ program }}/memsql.netcore/{{ program }}/bin/release/netcoreapp2.1/publish/" 
  tasks:
    - name: 1. directory publish files
      copy:
        src: "{{ workspace }}"
        dest: "/data/output/{{ program }}"

    - name: 2. copy *.ini file for supervisor
      copy:
        src: "{{ workspace }}/doc/{{ inifile }}.ini"
        dest: /data/supervisor/conf/

    - name: 3. supervisord file
      supervisorctl:
        name: memsql-test
        state: restarted
        supervisorctl_path: /usr/bin/supervisorctl
        config: /data/supervisor/supervisord.conf

 

这个配置文件大概是什么意思呢?

《1》 hosts: memsql-test    表示要操作memsql-test组下的所有主机,还记得你在hosts中配置的ip地址吗?

《2》 remote_user:  root     告诉你远程操控的角色是什么。

《3》 vars     定义一些变量,方便后面少些一些重复的代码。

《4》 tasks:   定义一些按顺序执行的action

《5》 name: 某一个action动作的描述

          copy: copy命令,这个算是ansible的模块了,具体参见:

          supervisorctl: 这个ansible集成了supervisor,挺好的,具体参见:

           

三:ansible 和 jenkins 集成

        在我的doc文件夹下有三个文件,方便jenkins在脚本执行的时候获取相关文件。

jenkins + supervisor + ansible 实现netcore程序的多机一键部署

《1》 deploy.yaml      这个就是上面介绍的

《2》 entrypoint.sh   这个脚本是准备copy到jenkins的command命令框中

cd ./memsql.netcore/memsql.test \
&& dotnet publish -c release \
&& ansible-playbook ./doc/deploy.yaml

《3》 memsql-test.ini   如果看过上一篇,那这个就不介绍了

[program:memsql-test]
command=/usr/bin/dotnet /data/output/memsql.test/memsql.test.dll
autostart=false
autorestart=true
stdout_logfile=/data/output/memsql.test/1.log   

《4》 最后就是一个简单的program.cs

 class program
    {
        static void main(string[] args)
        {
            var cts = new cancellationtokensource();

            var bgtask = task.run(() =>
            {
                for (int i = 0; i < int.maxvalue; i++)
                {
                    log.info($"当前index={i}, 时间为:{datetime.now}");

                    thread.sleep(new random().next(1000, 3000));
                }
            });

            log.info($"{datetime.now} test 后端服务程序正常启动!");
            console.writeline($"{datetime.now} test 后端服务程序正常启动!");

            bgtask.wait();
        }
    }

 

《5》 在jenkins中执行一下, 当然你也可以使用jenkins的ansible插件,简单的话用脚本也可以。

jenkins + supervisor + ansible 实现netcore程序的多机一键部署

 

点击jenkins构建之后,就可以看到console界面中 playbook的脚本在跑了。

jenkins + supervisor + ansible 实现netcore程序的多机一键部署

 

       然后你到两台机器都验证一起,process可是起来了。

[root@10-25-59-59 ~]# ps -ef | grep dotnet
root     22949  1371  0 11:28 ?        00:00:01 /usr/bin/dotnet /data/output/memsql.test/memsql.test.dll
root     26337 18477  0 11:45 pts/0    00:00:00 grep --color=auto dotnet
[root@10-25-198-96 ~]# ps -ef | grep dotnet
root      4831 21660  6 11:45 ?        00:00:00 /usr/bin/dotnet /data/output/memsql.test/memsql.test.dll

 

    好了,本篇就说到这里,希望对你有帮助。