parc02 / docker-nginx-vhost Goto Github PK

This Docker command runs a detached (-d) Nginx container named serv-a. Here's what each part of the command does:

• docker run: This command is used to create and start a Docker container from an image.
• -it: This flag stands for "interactive" and "pseudo-TTY." It allows you to interact with the container's shell if you run it in the foreground, but since it's used with -d here (detached mode), it doesn't have any effect.
• -d: This flag tells Docker to run the container in detached mode, meaning it runs in the background and you can continue to use your terminal for other commands.
• -p 8002:80: This flag maps port 80 inside the container to port 8002 on your host machine. This means that you can access the Nginx server running inside the container via http://localhost:8002.
• --name serv-a: This flag assigns a name serv-a to the container, making it easier to reference instead of using its container ID.
• nginx: This is the name of the Docker image to use for creating the container. In this case, it's the official Nginx image.

So, when you run this command, Docker will start a detached Nginx container named serv-a, and you can access the Nginx web server running inside the container via http://localhost:8002 on your host machine.

Step 1

• remove all images and containers

$ sudo docker rm (container id)
$ sudo docker rmi (image id)
--------------------------------------------------------------------------------
<results>
$ sudo docker images
REPOSITORY   TAG       IMAGE ID   CREATED   SIZE
$ sudo docker ps -a
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

Step 2

$ docker run -itd -p 8002:80 --name serv-a nginx
$ docker run -itd -p 8003:80 --name serv-a nginx
$ docker run -itd -p 8001:80 --name lb nginx:latest

FYI #2 (comment)

Step 3

• copy local default.conf into (lb) docker container -> lb:/etc/nginx/conf.d

sudo docker cp default.conf lb:/etc/nginx/conf.d

• move local default.config to lb folder and make serv-a, serv-b folder

Step 4

• make index.html file to serv-a serv-b folder & copy to docker container

$sudo docker cp serv-a/index.html serv-a:/usr/share/nginx/html
$sudo docker cp serv-b/index.html serv-b:/usr/share/nginx/html
$tree
.
├── README.md
├── lb
│   └── config
│       └── default.conf
├── serv-a
│   └── index.html
└── serv-b
    └── index.html

Step 5

• install ping in container(docker)

$ apt update
$apt install iputils-ping
$apt install telnet

Step 6

$sudo docker network ls

NETWORK ID     NAME      DRIVER    SCOPE
438ec9964d9e   bridge    bridge    local
a5597bd84d88   host      host      local
ed1a5e80b850   none      null      local

1. ~/code/docker-nginx-vhost/serv-a 이 폴더에서 Dockerfile 생성

Dockerfile내부에 입력

FROM nginx
COPY index.html /usr/share/nginx/html

2. Build 하귕

$ sudo docker build -t ng-s-1:0.1.0 . // $ sudo docker build -t ng-s-1:0.1.0 -f serv-a/Docerfile .

3. Run 해보세여 //ps로 확인

$ sudo docker run -d --name s1-1 -p 9001:80 ng-s-1:0.1.0
$ sudo docker ps 

CONTAINER ID   IMAGE            COMMAND                  CREATED             STATUS             PORTS                                   NAMES
ad3f037e8192   ng-s-1:0.1.0     "/docker-entrypoint.…"   33 seconds ago      Up 32 seconds      0.0.0.0:9001->80/tcp, :::9001->80/tcp   s1-1
675961f93220   mariadb:latest   "docker-entrypoint.s…"   34 minutes ago      Up 34 minutes      3306/tcp                                some-mariadb
02144c114c7b   48d341040c1f     "/docker-entrypoint.…"   About an hour ago   Up About an hour   80/tcp                                  serv-b
2dac2f3ae8d8   d8acd0b76461     "/docker-entrypoint.…"   About an hour ago   Up About an hour   80/tcp                                  serv-a
4cab17f790a4   nginx:latest     "/docker-entrypoint.…"   4 hours ago         Up 2 hours         0.0.0.0:8001->80/tcp, :::8001->80/tcp   lb

• serv-b 도 동일하게 할께요

중간 출력 확인

CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS          PORTS                                   NAMES
8f3ffddf6bc1   ng-s-2:0.1.0   "/docker-entrypoint.…"   10 seconds ago   Up 9 seconds    0.0.0.0:9002->80/tcp, :::9002->80/tcp   s1-2
ad3f037e8192   ng-s-1:0.1.0   "/docker-entrypoint.…"   40 minutes ago   Up 40 minutes   0.0.0.0:9001->80/tcp, :::9001->80/tcp   s1-1

/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
/docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2024/02/14 02:18:51 [notice] 1#1: using the "epoll" event method
2024/02/14 02:18:51 [notice] 1#1: nginx/1.25.3
2024/02/14 02:18:51 [notice] 1#1: built by gcc 12.2.0 (Debian 12.2.0-14)
2024/02/14 02:18:51 [notice] 1#1: OS: Linux 5.15.133.1-microsoft-standard-WSL2
2024/02/14 02:18:51 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
2024/02/14 02:18:51 [notice] 1#1: start worker processes
2024/02/14 02:18:51 [notice] 1#1: start worker process 29
2024/02/14 02:18:51 [notice] 1#1: start worker process 30
2024/02/14 02:18:51 [notice] 1#1: start worker process 31
2024/02/14 02:18:51 [notice] 1#1: start worker process 32
2024/02/14 02:18:51 [notice] 1#1: start worker process 33
2024/02/14 02:18:51 [notice] 1#1: start worker process 34
2024/02/14 02:18:51 [notice] 1#1: start worker process 35
2024/02/14 02:18:51 [notice] 1#1: start worker process 36
172.18.0.1 - - [14/Feb/2024:03:02:52 +0000] "GET / HTTP/1.1" 200 615 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36" "-"
2024/02/14 03:02:52 [error] 29#29: *1 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: 172.18.0.1, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "localhost:8001", referrer: "http://localhost:8001/"
172.18.0.1 - - [14/Feb/2024:03:02:52 +0000] "GET /favicon.ico HTTP/1.1" 404 555 "http://localhost:8001/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36" "-"
172.18.0.1 - - [14/Feb/2024:03:05:24 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36" "-"
2024/02/14 03:11:14 [notice] 1#1: signal 3 (SIGQUIT) received, shutting down
2024/02/14 03:11:14 [notice] 30#30: gracefully shutting down
2024/02/14 03:11:14 [notice] 29#29: gracefully shutting down
2024/02/14 03:11:14 [notice] 31#31: gracefully shutting down
2024/02/14 03:11:14 [notice] 33#33: gracefully shutting down
2024/02/14 03:11:14 [notice] 32#32: gracefully shutting down
2024/02/14 03:11:14 [notice] 36#36: gracefully shutting down
2024/02/14 03:11:14 [notice] 34#34: gracefully shutting down
2024/02/14 03:11:14 [notice] 30#30: exiting
2024/02/14 03:11:14 [notice] 29#29: exiting
2024/02/14 03:11:14 [notice] 33#33: exiting
2024/02/14 03:11:14 [notice] 31#31: exiting
2024/02/14 03:11:14 [notice] 36#36: exiting
2024/02/14 03:11:14 [notice] 34#34: exiting
2024/02/14 03:11:14 [notice] 32#32: exiting
2024/02/14 03:11:14 [notice] 31#31: exit
2024/02/14 03:11:14 [notice] 29#29: exit
2024/02/14 03:11:14 [notice] 34#34: exit
2024/02/14 03:11:14 [notice] 36#36: exit
2024/02/14 03:11:14 [notice] 30#30: exit
2024/02/14 03:11:14 [notice] 32#32: exit
2024/02/14 03:11:14 [notice] 33#33: exit
2024/02/14 03:11:14 [notice] 35#35: gracefully shutting down
2024/02/14 03:11:14 [notice] 35#35: exiting
2024/02/14 03:11:14 [notice] 35#35: exit
2024/02/14 03:11:14 [notice] 1#1: signal 17 (SIGCHLD) received from 32
2024/02/14 03:11:14 [notice] 1#1: worker process 32 exited with code 0
2024/02/14 03:11:14 [notice] 1#1: signal 29 (SIGIO) received
2024/02/14 03:11:14 [notice] 1#1: signal 17 (SIGCHLD) received from 34
2024/02/14 03:11:14 [notice] 1#1: worker process 34 exited with code 0
2024/02/14 03:11:14 [notice] 1#1: signal 29 (SIGIO) received
2024/02/14 03:11:14 [notice] 1#1: signal 17 (SIGCHLD) received from 36
2024/02/14 03:11:14 [notice] 1#1: worker process 33 exited with code 0
2024/02/14 03:11:14 [notice] 1#1: worker process 36 exited with code 0
2024/02/14 03:11:14 [notice] 1#1: signal 29 (SIGIO) received
2024/02/14 03:11:14 [notice] 1#1: signal 17 (SIGCHLD) received from 30
2024/02/14 03:11:14 [notice] 1#1: worker process 30 exited with code 0
2024/02/14 03:11:14 [notice] 1#1: signal 29 (SIGIO) received
2024/02/14 03:11:14 [notice] 1#1: signal 17 (SIGCHLD) received from 31
2024/02/14 03:11:14 [notice] 1#1: worker process 31 exited with code 0
2024/02/14 03:11:14 [notice] 1#1: worker process 35 exited with code 0
2024/02/14 03:11:14 [notice] 1#1: signal 29 (SIGIO) received
2024/02/14 03:11:14 [notice] 1#1: signal 17 (SIGCHLD) received from 29
2024/02/14 03:11:14 [notice] 1#1: worker process 29 exited with code 0
2024/02/14 03:11:14 [notice] 1#1: exit
/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: info: /etc/nginx/conf.d/default.conf differs from the packaged version
/docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2024/02/14 03:11:15 [emerg] 1#1: host not found in upstream "serv-a:80" in /etc/nginx/conf.d/default.conf:2
nginx: [emerg] host not found in upstream "serv-a:80" in /etc/nginx/conf.d/default.conf:2