【docker 总结】第六篇 - DockerCompose
一，compose 简介
compose 译为：组合，它可以将多个容器组合到一起；
比如：制做一个网站，会包含若干服务，数据库 mysql，MongoDB，redis，nginx，java 等；
这些服务虽然也可以装到一个容器中，但是一般并不会这样做；
因为，如果两个服务都用到了 jdk，但版本不一致，放到一起就会引发冲突，导致问题；
所以，需要每个服务对应一个镜像，每个服务都是一个独立的容器；这样就至少需要 3 个容器；
但是，这些服务应该是一个整体：
先启动数据库，再启动 web 容器，再启动 nginx，
在客户端机型访问，他们是相互协作，启动时是有顺序的，
所以，希望能够将他们作为一个整体，一起按照顺序进行启动和关闭操作；
如何能够实现这种编排？这就需要使用到 docker-compose；
二，编排
编排是什么，为什么需要编排？
一个复杂的系统，是需要进行规划的，比如：
1，考虑选择哪些镜像和容器；
2，按照合适的顺序启动这些容器；
3，管理容器中的服务器；
4，如果服务器宕机了，需要复杂重启；
5，如果服务器负载太大，需要动态扩容；
6，如果程序更新了，还要动态升级镜像和容器和服务；
这样，可以将代码打包到镜像中，然后再启动；
如果源代码发生改变，比如添加了新的功能，那么就需要重新打包镜像；
所以，这种操作最好需要工具辅助完成，比如：docker-compose、K8S；
三，compose
Compose 通过一个配置文件来管理多个Docker容器
在配置文件中，所有的容器通过services来定义，然后使用docker-compose脚本来启动、停止和重启应用和应用中的服务以及所有依赖服务的容器
步骤：
最后，运行docker-compose up，Compose 将启动并运行整个应用程序 配置文件组成
services 可以定义需要的服务，每个服务都有自己的名字、使用的镜像、挂载的数据卷所属的网络和依赖的其它服务
networks 是应用的网络，在它下面可以定义使用的网络名称，类性
volumes 是数据卷，可以在此定义数据卷，然后挂载到不同的服务上面使用
安装 compose
mac 安装包中已经自带，无需安装
centos 需要安装：
yum -y install epel-release
yum -y install python-pip
yum clean all
pip install docker-compose编写 docker-compose.yml
在 docker-compose.yml 中定义组成应用程序的服务，以便它们可以在隔离的环境中一起运行
空格缩进表示层次
冒号空格后面有空格
version: '2'
services:
nginx1:
image: nginx
ports:
- "8080:80"
nginx2:
image: nginx
ports:
- "8081:80"version 必须是字符串
BravedeMacBook-Pro:~ brave$ mkdir docker_nginx
BravedeMacBook-Pro:~ brave$ cd docker_nginx/
BravedeMacBook-Pro:docker_nginx brave$ vi docker-compose.yml
BravedeMacBook-Pro:docker_nginx brave$ docker-compose up
[+] Running 3/3
⠿ Network docker_nginx_default Created 0.1s
⠿ Container docker_nginx_nginx1_1 Creat... 0.2s
⠿ Container docker_nginx_nginx2_1 Creat... 0.2s
Attaching to nginx1_1, nginx2_1访问 nginx 服务
问题：控制台会卡住，一旦退出服务就会停止，不能继续访问
^CGracefully stopping... (press Ctrl+C again to force)
[+] Running 2/2
⠿ Container docker_nginx_nginx1_1 Stopped 0.3s
⠿ Container docker_nginx_nginx2_1 Stopped 6.4s
canceled可以在后台启动服务：
BravedeMacBook-Pro:docker_nginx brave$ docker-compose up -d
[+] Running 2/2
⠿ Container docker_nginx_nginx2_1 Started 0.8s
⠿ Container docker_nginx_nginx1_1 Started打印当前容器
BravedeMacBook-Pro:docker_nginx brave$ docker-compose ps
NAME COMMAND SERVICE STATUS PORTS
docker_nginx_nginx1_1 "/docker-entrypoint.…" nginx1 running 0.0.0.0:8081->80/tcp
docker_nginx_nginx2_1 "/docker-entrypoint.…" nginx2 running 0.0.0.0:8082->80/tcp停止服务
BravedeMacBook-Pro:docker_nginx brave$ docker-compose stop
[+] Running 2/2
⠿ Container docker_nginx_nginx2_1 Stopped 0.2s
⠿ Container docker_nginx_nginx1_1 Stopped 0.3s
BravedeMacBook-Pro:docker_nginx brave$ docker-compose ps
NAME COMMAND SERVICE STATUS PORTS
docker_nginx_nginx1_1 "/docker-entrypoint.…" nginx1 exited (0)
docker_nginx_nginx2_1 "/docker-entrypoint.…" nginx2 exited (0) 启动服务
BravedeMacBook-Pro:docker_nginx brave$ docker-compose start
[+] Running 2/2
⠿ Container docker_nginx_nginx2_1 Started 0.6s
⠿ Container docker_nginx_nginx1_1 Started 0.6s
BravedeMacBook-Pro:docker_nginx brave$ docker-compose ps
NAME COMMAND SERVICE STATUS PORTS
docker_nginx_nginx1_1 "/docker-entrypoint.…" nginx1 running 0.0.0.0:8081->80/tcp
docker_nginx_nginx2_1 "/docker-entrypoint.…" nginx2 running 0.0.0.0:8082->80/tcp看日志：
docker-compose logs -f
logs 查看日志
-f 跟踪日志变化 访问服务时，日志动态刷新
BravedeMacBook-Pro:docker_nginx brave$ docker-compose logs -f
nginx2_1 | /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
nginx2_1 | /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
nginx2_1 | /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
nginx2_1 | 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
nginx2_1 | 10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
nginx2_1 | /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
nginx2_1 | /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
nginx2_1 | /docker-entrypoint.sh: Configuration complete; ready for start up
nginx2_1 | 2021/12/14 06:32:55 [notice] 1#1: using the "epoll" event method
nginx2_1 | 2021/12/14 06:32:55 [notice] 1#1: nginx/1.21.4
nginx2_1 | 2021/12/14 06:32:55 [notice] 1#1: built by gcc 10.2.1 20210110 (Debian 10.2.1-6)
nginx2_1 | 2021/12/14 06:32:55 [notice] 1#1: OS: Linux 5.10.76-linuxkit
nginx2_1 | 2021/12/14 06:32:55 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
nginx2_1 | 2021/12/14 06:32:55 [notice] 1#1: start worker processes
nginx1_1 | /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
nginx2_1 | 2021/12/14 06:32:55 [notice] 1#1: start worker process 31
nginx1_1 | /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
nginx1_1 | /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
nginx2_1 | 2021/12/14 06:32:55 [notice] 1#1: start worker process 32
nginx1_1 | 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
nginx1_1 | 10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
nginx1_1 | /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
nginx1_1 | /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
nginx1_1 | /docker-entrypoint.sh: Configuration complete; ready for start up
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: using the "epoll" event method
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: nginx/1.21.4
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: built by gcc 10.2.1 20210110 (Debian 10.2.1-6)
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: OS: Linux 5.10.76-linuxkit
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: start worker processes
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: start worker process 32
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: start worker process 33
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: start worker process 34
nginx1_1 | 2021/12/14 06:32:55 [notice] 1#1: start worker process 35
nginx1_1 | 172.20.0.1 - - [14/Dec/2021:06:35:30 +0000] "GET / HTTP/1.1" 200 615 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36" "-"
nginx1_1 | 2021/12/14 06:35:30 [error] 32#32: *1 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: 172.20.0.1, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "localhost:8081", referrer: "http://localhost:8081/"
nginx1_1 | 172.20.0.1 - - [14/Dec/2021:06:35:30 +0000] "GET /favicon.ico HTTP/1.1" 404 555 "http://localhost:8081/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36" "-"进入服务
BravedeMacBook-Pro:docker_nginx brave$ docker exec -it docker_nginx_nginx1_1 bash
root@d482a80a53a6:/# 排除干扰：
1，停掉并删除所有容器
docker-compose down 停掉并删除所有容器和compose所创建的网络
BravedeMacBook-Pro:docker_nginx brave$ docker-compose down
[+] Running 3/2
⠿ Container docker_nginx_nginx2_1 Removed 0.3s
⠿ Container docker_nginx_nginx1_1 Removed 0.3s
⠿ Network docker_nginx_default Removed 每当通过compose启动一堆服务时，默认会创建一个网络
docker container stop `docker container ps -a -q`
stop 停掉容器
BravedeMacBook-Pro:docker_nginx brave$ docker container stop `docker container ps -a -q`
3fdb2c773583
05a69d0bbfa1
44aa617a6054
0ebe1b6be49b
706198092f9b
980e9f285e93
6c9ac8a83da8
553463de14b7
dccd4593629f
2934844233f7
c6cb1d0358ff
180a56dc2015
BravedeMacBook-Pro:docker_nginx brave$ docker container rm `docker container ps -a -q`
3fdb2c773583
05a69d0bbfa1
44aa617a6054
0ebe1b6be49b
706198092f9b
980e9f285e93
6c9ac8a83da8
553463de14b7
dccd4593629f
2934844233f7
c6cb1d0358ff
180a56dc2015这时，容器就都没了
BravedeMacBook-Pro:docker_nginx brave$ docker container ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES重新启动
BravedeMacBook-Pro:docker_nginx brave$ docker-compose up -d
[+] Running 3/3
⠿ Network docker_nginx_default Created 0.1s
⠿ Container docker_nginx_nginx2_1 Started 0.7s
⠿ Container docker_nginx_nginx1_1 Started 0.7s进入容器 docker_nginx_nginx1_1
因为 yaml 文件中没有指定容器的 name，所以默认生成了一个
BravedeMacBook-Pro:docker_nginx brave$ docker exec -it docker_nginx_nginx1_1 bash
root@310f6901b9bd:/# 查看 network：
发现多了一个bridge 类型的网络： docker_nginx_default
BravedeMacBook-Pro:docker_nginx brave$ docker network ls
NETWORK ID NAME DRIVER SCOPE
0f0889985450 bridge bridge local
a02b571b9ecb dev_web bridge local
3abec53303cd docker_nginx_default bridge local
04a72bf29d13 finance_web bridge local
1b1664b7d542 host host local
c57ec20004cf none null localcompose 中的容器都会加入到这个网络中，和其他网络是隔离的
写一个更复杂的，先把这个 down 掉(stop 并 rm 掉)
BravedeMacBook-Pro:docker_nginx brave$ docker-compose down
[+] Running 3/2
⠿ Container docker_nginx_nginx2_1 Removed 0.6s
⠿ Container docker_nginx_nginx1_1 Removed 0.6s
⠿ Network docker_nginx_default Removed 0.1s直接配置数据卷
两个静态网站，一个前台用，一个后台用
BravedeMacBook-Pro:docker_nginx brave$ mkdir front
BravedeMacBook-Pro:docker_nginx brave$ mkdir backend
BravedeMacBook-Pro:docker_nginx brave$ cd front/
BravedeMacBook-Pro:front brave$ echo front > index.html
BravedeMacBook-Pro:front brave$ cd ../backend/
BravedeMacBook-Pro:backend brave$ echo backend > index.html
BravedeMacBook-Pro:backend brave$ cd ..
BravedeMacBook-Pro:docker_nginx brave$ ls
backend docker-compose.yml front添加 tree 命令
Ubuntu下可执行下列命令安装
sudo apt-get install treeMacOS 下:
首先，进入家目录
cd $home使用 vim 命令创建一个.bashrc 文件
vim .bashrc在里面添加如下一行代码：
alias tree="find . -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'"保存退出后，使用 source .bashrc 命令更新一下脚本资源
source .bashrc在终端下试一下 tree 命令
BravedeMacBook-Pro:~ brave$ cd docker_nginx/
BravedeMacBook-Pro:docker_nginx brave$ tree
.
|____.DS_Store
|____backend
| |____index.html
|____docker-compose.yml
|____front
| |____index.html通过 docker 启动两个 nginx，一个映射到 front 目录，一个映射到 backend 目录；
当访问第一个容器时，8081，访问的是 front 目录下的 index.html 文件，
当访问第二个容器时，8082，访问的是 backend 目录下的 index.html 文件，
所以，这就需要将宿主机上的一个目录映射给容器中的目录
这样，修改只要在本地改就可以了，容器会到这里来读
拷贝一份目录出来
BravedeMacBook-Pro:~ brave$ cp -r docker_nginx webserver
BravedeMacBook-Pro:~ brave$ cd webserver/
BravedeMacBook-Pro:webserver brave$ ls
backend docker-compose.yml front修改 docker-compose.yml
vi docker-compose.yml添加数据卷的映射
version: '2'
services:
nginx1:
image: nginx
volumes:
- "./front:/usr/share/nginx/html"
ports:
- "8081:80"
nginx2:
image: nginx
volumes:
- "./backend:/usr/share/nginx/html"
ports:
- "8082:80"启动 compose
BravedeMacBook-Pro:webserver brave$ docker-compose up
[+] Running 3/3
⠿ Network webserver_default Created 0.1s
⠿ Container webserver_nginx1_1 Created 0.2s
⠿ Container webserver_nginx2_1 Created 0.2s
Attaching to nginx1_1, nginx2_1
当修改本地文件内容后，页面内容就会变化
创建并配置数据卷
先停掉 compose：
^CGracefully stopping... (press Ctrl+C again to force)
[+] Running 2/2
⠿ Container webserver_nginx1_1 Stopped 0.2s
⠿ Container webserver_nginx2_1 Stopped 8.6s
canceled修改 docker-compose.yml 文件，添加数据卷：
BravedeMacBook-Pro:webserver brave$ vi docker-compose.yml创建本地数据卷
version: '2'
services:
nginx1:
image: nginx
volumes:
- "data:/data"
- "./front:/usr/share/nginx/html"
ports:
- "8081:80"
nginx2:
image: nginx
volumes:
- "data:/data" // 冒号左侧不是相对路径，data 代表数据卷
- "./backend:/usr/share/nginx/html" // 冒号左侧可以是相对路径
ports:
- "8082:80"
volumes: // 创建数据卷 data
data:
driver: local后台启动 compose
BravedeMacBook-Pro:webserver brave$ docker-compose up -d
[+] Running 3/3
⠿ Network webserver_default Created 0.1s
⠿ Container webserver_nginx2_1 Started 0.7s
⠿ Container webserver_nginx1_1 Started 0.8s进入容器webserver_nginx2_1，在 data 目录下创建一个文件：
BravedeMacBook-Pro:webserver brave$ docker exec -it webserver_nginx2_1 bash
root@a7629261b3a5:/# cd /data/
root@a7629261b3a5:/data# ls
root@a7629261b3a5:/data# touch test.txt
root@a7629261b3a5:/data# exit
exit再进入容器 webserver_nginx1_1，可以看到刚刚创建的文件，再创建一个文件
BravedeMacBook-Pro:webserver brave$ docker exec -it webserver_nginx1_1 bash
root@b34bfd670a93:/# cd /data/
root@b34bfd670a93:/data# ls
test.txt
root@b34bfd670a93:/data# touch test2.txt
root@b34bfd670a93:/data# exit
exit查看宿主机的 data 目录
BravedeMacBook-Pro:webserver brave$ docker inspect webserver_nginx1_1
[
{
"Id": "b34bfd670a93ac29569afe9367485ef381ea9f8aa727af0491a87c0c19f3b624",
"Created": "2021-12-15T03:57:33.8890169Z",
"Path": "/docker-entrypoint.sh",
"Args": [
"nginx",
"-g",
"daemon off;"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 18514,
"ExitCode": 0,
"Error": "",
"StartedAt": "2021-12-15T03:57:34.6195702Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:f652ca386ed135a4cbe356333e08ef0816f81b2ac8d0619af01e2b256837ed3e",
"ResolvConfPath": "/var/lib/docker/containers/b34bfd670a93ac29569afe9367485ef381ea9f8aa727af0491a87c0c19f3b624/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/b34bfd670a93ac29569afe9367485ef381ea9f8aa727af0491a87c0c19f3b624/hostname",
"HostsPath": "/var/lib/docker/containers/b34bfd670a93ac29569afe9367485ef381ea9f8aa727af0491a87c0c19f3b624/hosts",
"LogPath": "/var/lib/docker/containers/b34bfd670a93ac29569afe9367485ef381ea9f8aa727af0491a87c0c19f3b624/b34bfd670a93ac29569afe9367485ef381ea9f8aa727af0491a87c0c19f3b624-json.log",
"Name": "/webserver_nginx1_1",
"RestartCount": 0,
"Driver": "overlay2",
"Platform": "linux",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": [
"/Users/brave/webserver/front:/usr/share/nginx/html:rw"
],
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {}
},
"NetworkMode": "webserver_default",
"PortBindings": {
"80/tcp": [
{
"HostIp": "",
"HostPort": "8081"
}
]
},
"RestartPolicy": {
"Name": "",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": null,
"CapAdd": null,
"CapDrop": null,
"CgroupnsMode": "private",
"Dns": null,
"DnsOptions": null,
"DnsSearch": null,
"ExtraHosts": null,
"GroupAdd": null,
"IpcMode": "private",
"Cgroup": "",
"Links": null,
"OomScoreAdj": 0,
"PidMode": "",
"Privileged": false,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"SecurityOpt": null,
"UTSMode": "",
"UsernsMode": "",
"ShmSize": 67108864,
"Runtime": "runc",
"ConsoleSize": [
0,
0
],
"Isolation": "",
"CpuShares": 0,
"Memory": 0,
"NanoCpus": 0,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": null,
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpuRealtimePeriod": 0,
"CpuRealtimeRuntime": 0,
"CpusetCpus": "",
"CpusetMems": "",
"Devices": null,
"DeviceCgroupRules": null,
"DeviceRequests": null,
"KernelMemory": 0,
"KernelMemoryTCP": 0,
"MemoryReservation": 0,
"MemorySwap": 0,
"MemorySwappiness": null,
"OomKillDisable": null,
"PidsLimit": null,
"Ulimits": null,
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0,
"Mounts": [
{
"Type": "volume",
"Source": "webserver_data",
"Target": "/data",
"VolumeOptions": {}
}
],
"MaskedPaths": [
"/proc/asound",
"/proc/acpi",
"/proc/kcore",
"/proc/keys",
"/proc/latency_stats",
"/proc/timer_list",
"/proc/timer_stats",
"/proc/sched_debug",
"/proc/scsi",
"/sys/firmware"
],
"ReadonlyPaths": [
"/proc/bus",
"/proc/fs",
"/proc/irq",
"/proc/sys",
"/proc/sysrq-trigger"
]
},
"GraphDriver": {
"Data": {
"LowerDir": "/var/lib/docker/overlay2/bdcd67dc5ebc710bb8c4080f04d36ae53992bb08fa8e61c1e72a38b47d302eb4-init/diff:/var/lib/docker/overlay2/98ddd77c17fd0fd4fc6707553e32b49f8e2eba2bc9e70da3d5fca8b29b91d8ec/diff:/var/lib/docker/overlay2/3be50bc643a4970bcfa30f7e96866f443053bd785888275e1e7e3523e09b4360/diff:/var/lib/docker/overlay2/5012d011eb7dbcacff0b847f7e9c0ed198b3449bd343e7fa684896ff85aa9354/diff:/var/lib/docker/overlay2/51f10304ec3ccb9e9a87e92d04b7cd9cd1a7b4cf5ffaf44066d2efe5ab13bde1/diff:/var/lib/docker/overlay2/0cf4f1c2e2da09449d986dae65c19969eb2443a8bdedfd00a21e1a62f60fbed4/diff:/var/lib/docker/overlay2/43f4bcbd57da70e0ba27546bf82a9f3ff49be426b612d7c3a6c07753eebce40f/diff",
"MergedDir": "/var/lib/docker/overlay2/bdcd67dc5ebc710bb8c4080f04d36ae53992bb08fa8e61c1e72a38b47d302eb4/merged",
"UpperDir": "/var/lib/docker/overlay2/bdcd67dc5ebc710bb8c4080f04d36ae53992bb08fa8e61c1e72a38b47d302eb4/diff",
"WorkDir": "/var/lib/docker/overlay2/bdcd67dc5ebc710bb8c4080f04d36ae53992bb08fa8e61c1e72a38b47d302eb4/work"
},
"Name": "overlay2"
},
// 数据卷 Mounts "Source": "/var/lib/docker/volumes/webserver_data/_data"
"Mounts": [
{
"Type": "bind",
"Source": "/Users/brave/webserver/front",
"Destination": "/usr/share/nginx/html",
"Mode": "rw",
"RW": true,
"Propagation": "rprivate"
},
{
"Type": "volume",
"Name": "webserver_data",
"Source": "/var/lib/docker/volumes/webserver_data/_data",
"Destination": "/data",
"Driver": "local",
"Mode": "z",
"RW": true,
"Propagation": ""
}
],
"Config": {
"Hostname": "b34bfd670a93",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": true,
"AttachStderr": true,
"ExposedPorts": {
"80/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"NGINX_VERSION=1.21.4",
"NJS_VERSION=0.7.0",
"PKG_RELEASE=1~bullseye"
],
"Cmd": [
"nginx",
"-g",
"daemon off;"
],
"Image": "nginx",
"Volumes": {
"/data": {},
"/usr/share/nginx/html": {}
},
"WorkingDir": "",
"Entrypoint": [
"/docker-entrypoint.sh"
],
"OnBuild": null,
"Labels": {
"com.docker.compose.config-hash": "f512730eadababb6d69e9935a86eceed5960e0d3e11f0800b00ab834f34fe9cd",
"com.docker.compose.container-number": "1",
"com.docker.compose.depends_on": "",
"com.docker.compose.image": "sha256:f652ca386ed135a4cbe356333e08ef0816f81b2ac8d0619af01e2b256837ed3e",
"com.docker.compose.oneoff": "False",
"com.docker.compose.project": "webserver",
"com.docker.compose.project.config_files": "/Users/brave/webserver/docker-compose.yml",
"com.docker.compose.project.working_dir": "/Users/brave/webserver",
"com.docker.compose.service": "nginx1",
"com.docker.compose.version": "2.2.1",
"maintainer": "NGINX Docker Maintainers \u003cdocker-maint@nginx.com\u003e"
},
"StopSignal": "SIGQUIT"
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "f9f9647096145a373ac3b609c379685c0b1ba8abe185b5df65fe7d9cddfe7d19",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {
"80/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "8081"
}
]
},
"SandboxKey": "/var/run/docker/netns/f9f964709614",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"webserver_default": {
"IPAMConfig": null,
"Links": null,
"Aliases": [
"webserver_nginx1_1",
"nginx1",
"b34bfd670a93"
],
"NetworkID": "051b68777c6dfe07fcae9b75645a2c0ce921757ecf6c47781125d4275a805359",
"EndpointID": "b45e60702647701e7858d65ff60ae365564a029f539d8b75ef508a98b261cf41",
"Gateway": "172.23.0.1",
"IPAddress": "172.23.0.3",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:ac:17:00:03",
"DriverOpts": null
}
}
}
}
]数据卷 Mounts "Source": "/var/lib/docker/volumes/webserver_data/_data"
MAC 独有方式。。。
可以进入 "/var/lib/docker/volumes/webserver_data/_data"查看到这两个文件
创建并配置网络
BravedeMacBook-Pro:webserver brave$ docker-compose down
[+] Running 3/3
⠿ Container webserver_nginx1_1 Removed 0.3s
⠿ Container webserver_nginx2_1 Removed 0.3s
⠿ Network webserver_default Removed 0.1s
vi docker-compose.yml:set nu 查看行号
3 nginx1:
4 image: nginx
5 networks:
6 - "myweb" // myweb 网络
7 - "default" // 默认网络 可写可不写
8 volumes:
9 - "data:/data"
10 - "./front:/usr/share/nginx/html"
11 ports:
12 - "8081:80"
13 nginx2:
14 image: nginx
15 volumes:
16 - "data:/data"
17 - "./backend:/usr/share/nginx/html"
18 ports:
19 - "8082:80"
20 volumes:
21 data:
22 driver: local
23 networks: // 创建网络 myweb
24 myweb:
25 driver: bridge启动 compose
BravedeMacBook-Pro:webserver brave$ docker compose up -d
[+] Running 4/4
⠿ Network webserver_myweb Created 0.1s
⠿ Network webserver_default Created 0.1s
⠿ Container webserver-nginx1-1 Started 0.9s
⠿ Container webserver-nginx2-1 Started 0.8s查看网络，创建了webserver_default、webserver_myweb 两个网络：
BravedeMacBook-Pro:webserver brave$ docker network ls
NETWORK ID NAME DRIVER SCOPE
0f0889985450 bridge bridge local
a02b571b9ecb dev_web bridge local
04a72bf29d13 finance_web bridge local
1b1664b7d542 host host local
c57ec20004cf none null local
82fddc470497 webserver_default bridge local // 新创建
bb13d861b20a webserver_myweb bridge local // 新创建