Docker教程上的连接被拒绝入门第4部分 [英] Connection refused on Docker tutorial get started part 4
问题描述
我不明白自己错过了什么。
docker.compose.yml
版本: 3
服务:
网站:
#用您的名称和图片详细信息替换用户名/存储库:
图片:svezday / friendlyhello:第1部分
部署:
副本:5
restart_policy:
条件:失败
资源:
限制:
cpus: 0.1
内存:50M
端口:
- 80:80
网络:
-网站
可视化工具:
图像:dockersamples / visualizer:稳定的
端口:
- 8080:8080
数量:
- /var/run/docker.sock:/var/run/docker.sock
部署:
放置:
约束:[node.role ==管理器]
网络:
-网络net
网络:
网络:
Dockerfile
#使用官方Python运行时作为父映像
F ROM python:2.7-slim
#将工作目录设置为/ app
WORKDIR / app
#将当前目录内容复制到/ app $的容器中b $ b COPY。 / app
#安装requirements.txt
中指定的所有必需软件包RUN pip install --trusted-host pypi.python.org -r requirements.txt
#使端口80在该容器外部的世界可用
EXPOSE 80
#定义环境变量
ENV名称世界
#在运行app.py时容器启动
CMD [ python, app.py]
app。 py
从flask导入烧瓶
从redis导入Redis,RedisError
导入os
导入socket
#连接到Redis
redis = Redis(host = redis,db = 0,socket_connect_timeout = 2,socket_timeout = 2)
app = Flask (__name__)
@ app.route( /)
def hello():
试试:
访问= redis.incr( counter)
,除了RedisError:
visits =< i>无法连接到Redis,计数器已禁用< / i>
html =< h3>你好{name}!< / h3> < b>主机名:< / b> {hostname}< br /> < b>访问:< / b> {访问}
返回html.format(name = os.getenv( NAME, world),hostname = socket.gethostname(),visits =访问次数)
如果__name__ == __main__:
app.run(host ='0.0.0.0',port = 80)
我在ubuntu 18上,带有vitualbox。
这是虚拟机
名称活动的驱动程序状态URL群集DOCKER错误
myvm1 * virtualbox运行tcp://192.168.99.100:2376 v18.09.0
requirements.txt
Flask
Redis
myvm2-virtualbox正在运行tcp://192.168.99.101:2376未知无法查询docker版本:获取https://192.168.99.101:2376/v1.15/version :x509:证书对192.168.99.103有效,而不对192.168.99.101有效
docker-machine ssh myvm1
docker swarm init --advertise-addr 192.168 .99.101:2377 getStartNow
docker-machine ssh myvm2
docker swarm join --token SWMTKN-1-29dkoqd6tskoqszzrdpcnw0nbmrgbrw9xr27yoxtvapodk6qmg-3tv01eh1ts0n97s5c5zq7q4ju 192.168.99.100:2377 $ b $ p>
docker-machine ssh myvm1
docker stack deploy -c docker.compose.yml getStartNow
docker stack ls
NAME服务协调者
getStartNow 2群
docker service ls
ID名称模式副本图像端口
w9l0khipey4v getStartNow_visualizer复制了1/1 dockersamples / visualizer:stable *:8080-> 8080 / tcp
3yoifm7inujf getStartNow_web已复制5/5 svezday / friendlyhello:part-1 *:80-> 80 / tcp
这是我的问题
curl:(7)无法连接到192.168.99.100端口80:连接被拒绝
卷曲 http://192.168。 99.100:8080
curl:(7)无法连接到192.168.99.100端口8080:连接被拒绝
解决方案我遇到了同样的问题。
我遵循了Elavaud解决方案在这里,它对我有用。
因此:
-
我从此处
下载了boot2docker.iso
-
检查活动的虚拟机
docker-machine ls
-
销毁所有虚拟机(myvm1和myvm2)
docker -machine rm $(docker-machine ls -q)
-
再次创建指定路径的虚拟机下载的boot2docker.iso
docker-machine create --driver virtualbox --virtualbox -boot2docker-url path_to_your_boot2docker.iso virtual_machine_name
在我的情况下,路径为〜/ Downloads / boot2docker.iso,所以我这样做了
docker-机器创建--driver virtualbox --virtualbox-boot2docker-url〜/ Downloads / boot2docker.iso myvm1
docker-machine create --driver virtualbox --virtualbox-boot2docker-url〜/ Downloads / boot2docker。 iso myvm2
- 重新开始,开始第四部分
最后,我看到您的docker-compose.yml与在get_started part3中创建的docker-compose.yml不同。我不知道这可能是问题。
在我的情况下,我在get_started part3中使用了相同的docker-compose.yml,因此当我访问我的应用程序时,我使用端口4000
卷曲http://192.168.99.101:4000/
I don't understand what I missed.
docker.compose.yml
version: "3"
services:
web:
# replace username/repo:tag with your name and image details
image: svezday/friendlyhello:part-1
deploy:
replicas: 5
restart_policy:
condition: on-failure
resources:
limits:
cpus: "0.1"
memory: 50M
ports:
- "80:80"
networks:
- webnet
visualizer:
image: dockersamples/visualizer:stable
ports:
- "8080:8080"
volumes:
- "/var/run/docker.sock:/var/run/docker.sock"
deploy:
placement:
constraints: [node.role == manager]
networks:
- webnet
networks:
webnet:
Dockerfile
# Use an official Python runtime as a parent image
FROM python:2.7-slim
# Set the working directory to /app
WORKDIR /app
# Copy the current directory contents into the container at /app
COPY . /app
# Install any needed packages specified in requirements.txt
RUN pip install --trusted-host pypi.python.org -r requirements.txt
# Make port 80 available to the world outside this container
EXPOSE 80
# Define environment variable
ENV NAME World
# Run app.py when the container launches
CMD ["python", "app.py"]
app.py
from flask import Flask
from redis import Redis, RedisError
import os
import socket
# Connect to Redis
redis = Redis(host="redis", db=0, socket_connect_timeout=2, socket_timeout=2)
app = Flask(__name__)
@app.route("/")
def hello():
try:
visits = redis.incr("counter")
except RedisError:
visits = "<i>cannot connect to Redis, counter disabled</i>"
html = "<h3>Hello {name}!</h3>" "<b>Hostname:</b> {hostname}<br/>" "<b>Visits:</b> {visits}"
return html.format(name=os.getenv("NAME", "world"), hostname=socket.gethostname(), visits=visits)
if __name__ == "__main__":
app.run(host='0.0.0.0', port=80)
I'm on ubuntu 18, with vitualbox.
This is the vm
NAME ACTIVE DRIVER STATE URL SWARM DOCKER ERRORS
myvm1 * virtualbox Running tcp://192.168.99.100:2376 v18.09.0
requirements.txt
Flask
Redis
myvm2 - virtualbox Running tcp://192.168.99.101:2376 Unknown Unable to query docker version: Get https://192.168.99.101:2376/v1.15/version: x509: certificate is valid for 192.168.99.103, not 192.168.99.101
docker-machine ssh myvm1
docker swarm init --advertise-addr 192.168.99.101:2377 getStartNow
docker-machine ssh myvm2
docker swarm join --token SWMTKN-1-29dkoqd6tskoqszzrdpcnw0nbmrgbrw9xr27yoxtvapodk6qmg-3tv01eh1ts0n97s5c5zq7q4ju 192.168.99.100:2377
docker-machine ssh myvm1
docker stack deploy -c docker.compose.yml getStartNow
docker stack ls
NAME SERVICES ORCHESTRATOR
getStartNow 2 Swarm
docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
w9l0khipey4v getStartNow_visualizer replicated 1/1 dockersamples/visualizer:stable *:8080->8080/tcp
3yoifm7inujf getStartNow_web replicated 5/5 svezday/friendlyhello:part-1 *:80->80/tcp
AND HERE IS MY PROBLEM
curl: (7) Failed to connect to 192.168.99.100 port 80: Connection refused
curl http://192.168.99.100:8080
curl: (7) Failed to connect to 192.168.99.100 port 8080: Connection refused
解决方案 I had the same problem.
I followed Elavaud solution here and it worked for me.
So:
I downloaded boot2docker.iso from here
Check active virtual-machine
docker-machine ls
destroy all virtual machines (myvm1 and myvm2)
docker-machine rm $(docker-machine ls -q)
Create again the virtual-machines specifying the path of your downloaded boot2docker.iso
docker-machine create --driver virtualbox --virtualbox-boot2docker-url path_to_your_boot2docker.iso virtual_machine_name
In my case the path was ~/Downloads/boot2docker.iso so i did
docker-machine create --driver virtualbox --virtualbox-boot2docker-url ~/Downloads/boot2docker.iso myvm1
docker-machine create --driver virtualbox --virtualbox-boot2docker-url ~/Downloads/boot2docker.iso myvm2
- Start again get started part-4
Last think, I saw your docker-compose.yml is differente from docker-compose.yml created in get_started part3. I don't know if that could be the problem.
In my case I used the same docker-compose.yml in get_started part3, so when I access to my app i use the port 4000
curl http://192.168.99.101:4000/
这篇关于Docker教程上的连接被拒绝入门第4部分的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!