容器基础(七): 使用docker compose部署程序

配置

在上一节的基础上,  增加如下的docker-compose.yml文件, 然后用docker-compose up命令启动容器进行部署: 

 1 version: "3"
 2 services:
 3   server:
 4     image: update/server:v0.1
 5     labels:
 6       description: "tcp server test script"
 7     restart: always
 8     command: -p 3000
 9 
10   worker:
11     image: update/worker:v0.1
12     labels:
13       description: "tcp client test script"
14     restart: always
15     links:
16       - server:server
17     command: -d server -p 3000

 

启动信息:

 1 linux:/app # docker-compose  up
 2 Creating network "app_default" with the default driver
 3 Creating app_server_1_17e8cbeb1e01 ... done
 4 Creating app_worker_1_bd97b9199c60 ... done
 5 Attaching to app_server_1_74e7ece79785, app_worker_1_bb9dcc04daf9
 6 
 7 
 8 linux:/app/original/server # docker ps
 9 CONTAINER ID        IMAGE                COMMAND                  CREATED              STATUS              PORTS               NAMES
10 81211aa6383c        update/worker:v0.1   "python worker.py ..."   About a minute ago   Up About a minute                       app_worker_1_bb9dcc04daf9
11 76c322567db7        update/server:v0.1   "python server.py ..."   About a minute ago   Up About a minute                       app_server_1_74e7ece79785
12 linux:/app/original/server # docker exec ^C
13 linux:/app/original/server # docker exec 81211aa6383c ss -a | grep 3000
14 tcp    ESTAB      0      0           172.18.0.3:52448        172.18.0.2:3000
15 linux:/app/original/server # docker exec 76c322567db7 ss -a | grep 3000
16 tcp    LISTEN     0      5                    *:3000                  *:*
17 tcp    ESTAB      0      0           172.18.0.2:3000         172.18.0.3:52448
18 linux:/app/original/server # docker exec 76c322567db7 tail -f /update/server/log/server.log
19 2018-11-19 09:35:59 [INFO]  Waiting for connection...
20 2018-11-19 09:36:00 [INFO]  ('172.18.0.3', 52448) connected
21 tail: unrecognized file system type 0x794c7630 for '/update/server/log/server.log'. please report this to bug-coreutils@gnu.org. reverting to polling
22 ^C
23 linux:/app/original/server # docker exec 81211aa6383c tail -f /update/worker/log/worker.log
24 tail: unrecognized file system type 0x794c7630 for '/update/worker/log/worker.log'. please report this to bug-coreutils@gnu.org. reverting to polling
25 2018-11-19 09:38:30 [INFO]  [recv] hello, docker!
26 2018-11-19 09:38:35 [INFO]  [recv] hello, docker!
27 2018-11-19 09:38:40 [INFO]  [recv] hello, docker!
28 ^C
29 linux:/app/original/server # 
30 linux:/app #  docker-compose -f docker-compose.yml down
31 Stopping app_worker_1_bd97b9199c60 ... done
32 Stopping app_server_1_17e8cbeb1e01 ... done
33 Removing app_worker_1_bd97b9199c60 ... done
34 Removing app_server_1_17e8cbeb1e01 ... done
35 Removing network app_default
36 linux:/app #

 

支持环境变量传参 

在上面的基础上，把命令行传参的方式改为通过环境变量传参:

 1 FROM jason/debian-python27:v1.0
 2 
 3 MAINTAINER jason<djsxut@163.com>
 4 
 5 RUN mkdir -p /env/server
 6 
 7 COPY . /env/server
 8 
 9 WORKDIR /env/server
10 
11 ENV PATH $PATH:/env/server
12 
13 ENTRYPOINT ["python", "server.py"]
/app/env/server/Dockerfile
 1 #!/usr/bin/python
 2 # -*- coding: utf-8 -*-
 3 
 4 import os
 5 import sys
 6 import time
 7 import socket
 8 import select
 9 import signal
10 import threading
11 
12 log_file = "log/server.log"
13 
14 def log(msg):
15   if not os.path.exists("log"):
16     os.mkdir("log")
17   with open(log_file, "a") as wf:
18     wf.writelines(
19         time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(time.time())) +
20         " [INFO]  " + msg + "\n")
21 
22 def do_listen(port):
23   server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
24   server_socket.bind(('', port))
25   server_socket.listen(5)
26   print 'Waiting for connection...'
27   log('Waiting for connection...')
28   server_socket.setblocking(0)
29 
30   rfd = [server_socket, ]
31 
32   while True:
33     rlist, wlist, xlist = select.select(rfd, [], [])
34     for sock in rlist:
35       if sock == server_socket:
36         newsock, addr = server_socket.accept()
37         print '[+] %s connected' % str(addr)
38         log('%s connected' % str(addr))
39         rfd.append(newsock)
40       else:
41         data = sock.recv(1024)
42         if data:
43           sock.send(data)
44         else:
45           print '[-] %s closed' % str(sock.getpeername())
46           log('%s closed' % str(sock.getpeername()))
47           rfd.remove(sock)
48           sock.close()
49 
50 def signal_handler(signum, frame):
51   print '\n[-] signal(%d) received, exit!' % signum
52   log('signal(%d) received, exit!' % signum)
53   sys.exit(-1)
54 
55 if __name__ == '__main__':
56   try:
57     port = int(os.environ['APP_PORT'])
58   except:
59     print '[-] environment APP_PORT should be set'
60     log('environment APP_PORT should be set')
61     sys.exit(-1)
62 
63   signal.signal(signal.SIGINT, signal_handler)  
64 
65   try:
66     do_listen(port)
67   except Exception, e:
68     print e
69     print '\nExit'
/app/env/server/server.py

 

 1 FROM jason/debian-python27:v1.0
 2 
 3 MAINTAINER jason<djsxut@163.com>
 4 
 5 RUN mkdir -p /env/worker
 6 
 7 COPY . /env/worker
 8 
 9 WORKDIR /env/worker
10 
11 ENV PATH $PATH:/env/worker
12 
13 ENTRYPOINT ["python", "worker.py"]
/app/env/worker/Dockerfile
 1 #!/usr/bin/python
 2 # -*- coding: utf-8 -*-
 3 
 4 import os
 5 import sys
 6 import time
 7 import socket
 8 import signal
 9 import getopt
10 import threading
11 
12 log_file = "log/worker.log"
13 
14 def log(msg):
15   if not os.path.exists("log"):
16     os.mkdir("log")
17   with open(log_file, "a") as wf:
18     wf.writelines(
19         time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(time.time())) +
20         " [INFO]  " + msg + "\n")
21 
22 class Handler:
23   def __init__(self, domain, port):
24     self.domain = domain
25     self.port   = port
26     self.sock   = None
27 
28   def get_socket(self):
29     for res in socket.getaddrinfo(self.domain, self.port,
30                                   socket.AF_INET, socket.SOCK_STREAM):
31       family, socktype, proto, canonname, sa = res
32       try:
33         self.sock = socket.socket(family, socktype, proto)
34         #self.sock.setblocking(0)
35         #sock.settimeout(0.5)
36         self.sock.connect(sa)
37       except socket.error, msg:
38         if self.sock != None:
39           self.sock.close()
40         self.sock = None
41       else:
42         return True
43 
44     return False
45 
46   def do_handler(self):
47     while self.sock == None and self.get_socket() == False:
48       print '[-] connect failed...'
49       log('connect failed...')
50       time.sleep(5)
51 
52     print '[+] %s connected' % str(self.sock.getpeername())
53     log('[+] %s connected' % str(self.sock.getpeername()))
54     while True:
55       # do something
56       self.sock.send('hello, docker!')
57       data = self.sock.recv(1024)
58       if data:
59         print '[+][recv] %s' % data
60         log('[recv] %s' % data)
61         time.sleep(5)
62       else:
63         print '[-] server closed, exit'
64         log('server closed, exit')
65         self.sock.close()
66         self.sock = None
67         break
68 
69 def signal_handler(signum, frame):
70   print '\n[-] signal(%d) received, exit!' % signum
71   log('signal(%d) received, exit!' % signum)
72   sys.exit(-1)
73 
74 if __name__ == '__main__':
75   signal.signal(signal.SIGINT, signal_handler)  
76 
77   try:
78     domain = os.environ['APP_DOMAIN']
79     port = int(os.environ['APP_PORT'])
80   except:
81     print '[-] environment APP_PORT/APP_DOMAIN should be set'
82     log('environment APP_PORT/APP_DOMAIN should be set')
83     sys.exit(-1)
84 
85   try:
86     handler = Handler(domain, port)
87     handler.do_handler()
88   except Exception, e:
89     print e
90     print '\nExit'
/app/env/worker/worker.py

 

简单修改下docker-compose.yml文件：

 1 version: "3"
 2 services:
 3   server:
 4     image: env/server:v0.1 
 5     build:
 6       context: /app/env/server
 7       dockerfile: Dockerfile
 8     labels:
 9       description: "tcp server test script"
10     restart: always
11     environment:
12       - APP_PORT=${APP_PORT-3000}
13     volumes:
14       - /app/env/server/log:/env/server/log
15   
16   worker:
17     image: env/worker:v0.1
18     build: /app/env/worker
19     labels:
20       description: "tcp client test script"
21     restart: always
22     links:
23       - server
24     environment:
25       - APP_PORT=${APP_PORT-3000}
26       - APP_DOMAIN=server
27     volumes:
28       - /app/env/worker/log:/env/worker/log
29     deploy:
30       replicas: 3

 

 执行结果如下所示：

 1 linux:/app/env/server # APP_PORT=5000 docker-compose up -d
 2 WARNING: Some services (worker) use the 'deploy' key, which will be ignored. Compose does not support 'deploy' configuration - use `docker stack deploy` to deploy to a swarm.
 3 Creating network "env_default" with the default driver
 4 Building server
 5 Step 1/7 : FROM jason/debian-python27:v1.0
 6  ---> cd0b2f7d8d04
 7 Step 2/7 : MAINTAINER jason<djsxut@163.com>
 8  ---> Using cache
 9  ---> d239a9d50575
10 Step 3/7 : RUN mkdir -p /env/server
11  ---> Running in f1802bbbf5f8
12  ---> b196dec5ece6
13 Removing intermediate container f1802bbbf5f8
14 Step 4/7 : COPY . /env/server
15  ---> 789a69dde7bc
16 Removing intermediate container 53d720f6e28d
17 Step 5/7 : WORKDIR /env/server
18  ---> 8bc3b957a769
19 Removing intermediate container dfd8c4cecd45
20 Step 6/7 : ENV PATH $PATH:/env/server
21  ---> Running in 0935ca701a19
22  ---> d6fdd5814444
23 Removing intermediate container 0935ca701a19
24 Step 7/7 : ENTRYPOINT python server.py
25  ---> Running in 9209e05da1a9
26  ---> c34b7a72cb0b
27 Removing intermediate container 9209e05da1a9
28 Successfully built c34b7a72cb0b
29 WARNING: Image for service server was built because it did not already exist. To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
30 Building worker
31 Step 1/7 : FROM jason/debian-python27:v1.0
32  ---> cd0b2f7d8d04
33 Step 2/7 : MAINTAINER jason<djsxut@163.com>
34  ---> Using cache
35  ---> d239a9d50575
36 Step 3/7 : RUN mkdir -p /env/worker
37  ---> Running in de82f380b738
38  ---> 480f67b5dc6a
39 Removing intermediate container de82f380b738
40 Step 4/7 : COPY . /env/worker
41  ---> c7b98717c8c8
42 Removing intermediate container 1d0857c192e6
43 Step 5/7 : WORKDIR /env/worker
44  ---> a6cedc9734a0
45 Removing intermediate container cd648d954ada
46 Step 6/7 : ENV PATH $PATH:/env/worker
47  ---> Running in 977e0045899e
48  ---> 5d20c078708d
49 Removing intermediate container 977e0045899e
50 Step 7/7 : ENTRYPOINT python worker.py
51  ---> Running in 3f92d15c16f0
52  ---> bd3579c73bd3
53 Removing intermediate container 3f92d15c16f0
54 Successfully built bd3579c73bd3
55 WARNING: Image for service worker was built because it did not already exist. To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
56 Creating env_server_1_be9373e6fe83 ... done
57 Creating env_worker_1_e4e9c2ece128 ... done
58 linux:/app/env/server #
59 linux:/app/env/server #
60 linux:/app/env/server # docker images | grep env
61 env/worker              v0.1                bd3579c73bd3        19 seconds ago      207MB
62 env/server              v0.1                c34b7a72cb0b        22 seconds ago      207MB
63 linux:/app/env/server # docker ps
64 CONTAINER ID        IMAGE               COMMAND              CREATED             STATUS              PORTS               NAMES
65 93c7d5f760e8        env/worker:v0.1     "python worker.py"   20 seconds ago      Up 19 seconds                           env_worker_1_57f3186eefba
66 0712a2615e12        env/server:v0.1     "python server.py"   21 seconds ago      Up 20 seconds                           env_server_1_1615d4c9ff54
67 linux:/app/env/server # cat log/server.log
68 2018-11-20 02:41:32 [INFO]  Waiting for connection...
69 2018-11-20 02:41:33 [INFO]  ('172.18.0.3', 38708) connected
70 linux:/app/env/server # cat ../worker/log/worker.log
71 2018-11-20 02:41:33 [INFO]  [+] ('172.18.0.2', 5000) connected
72 2018-11-20 02:41:33 [INFO]  [recv] hello, docker!
73 linux:/app/env/server # docker-compose down
74 WARNING: Some services (worker) use the 'deploy' key, which will be ignored. Compose does not support 'deploy' configuration - use `docker stack deploy` to deploy to a swarm.
75 Stopping env_worker_1_57f3186eefba ... done
76 Stopping env_server_1_1615d4c9ff54 ... done
77 Removing env_worker_1_57f3186eefba ... done
78 Removing env_server_1_1615d4c9ff54 ... done
79 Removing network env_default
80 linux:/app/env/server #
result

 

posted @ 2018-12-07 08:52  子厚。  阅读(812)  评论(0)  编辑  收藏  举报