docker 常用操作
1 进入容器# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
dcd05bed40d6 ansible/centos7-ansible "/bin/bash" 37 seconds ago Up 35 seconds nginx
启动
# docker start nginx
nginx
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
dcd05bed40d6 ansible/centos7-ansible "/bin/bash" 3 minutes ago Up 20 seconds
nginx
进入
# docker exec -it dcd05bed40d6 /bin/bash
# exit
exit
# docker exec -it nginx /bin/bash
# exit
exit
exec 表示在一个运行的容器中执行命令，参数-i，表示交互式执行，-t表示分配一个伪终端tty,
容器的名称和id都可以，通常都是执行的命令，分配到一个shell容器执行命令，一般都是/bin/bash
2、 查看容器的日志
# docker logs nginx
172.17.0.1 - - "HEAD / HTTP/1.1" 200 0 "-" "curl/7.29.0" "-"
# docker logs nginx
172.17.0.1 - - "HEAD / HTTP/1.1" 200 0 "-" "curl/7.29.0" "-"
# docker logs nginx >nginxaccess.log
# more nginxaccess.log
172.17.0.1 - - "HEAD / HTTP/1.1" 200 0 "-" "curl/7.29.0" "-"
3 启动，停止 重启容器
# docker stop nginx
nginx
# docker start nginx
nginx
# docker restart nginx
nginx
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6af5902d98c0 nginx "nginx -g 'daemon of…" 5 minutes ago Up 5 seconds 0.0.0.0:80->80/tcp nginx
4bc701965bca ansible/centos7-ansible "/bin/bash" 34 minutes ago Up 34 minutes ws
# docker logs nginx
172.17.0.1 - - "HEAD / HTTP/1.1" 200 0 "-" "curl/7.29.0" "-"
nginx实例操作
[*]端口映射
# docker pull nginx
Using default tag: latest
latest: Pulling from library/nginx
be8881be8156: Pull complete
32d9726baeef: Pull complete
87e5e6f71297: Pull complete
Digest: sha256:d85914d547a6c92faa39ce7058bd7529baacab7e0cd4255442b04577c4d1f424
Status: Downloaded newer image for nginx:latest
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest c82521676580 6 days ago 109MB
ansible/centos7-ansible latest 688353a31fde 19 months ago 447MB
# docker run -itd --name nginx-p 80:80docker.io/nginx
6af5902d98c086d28964e09669347a74354436d06eb8620f6a6bc65064974d8e
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6af5902d98c0 nginx "nginx -g 'daemon of…" 48 seconds ago Up 47 seconds 0.0.0.0:80->80/tcp nginx
# curl -I localhost:80
HTTP/1.1 200 OK
Server: nginx/1.15.2
Date: Tue, 31 Jul 2018 09:27:21 GMT
Content-Type: text/html
Content-Length: 612
Last-Modified: Tue, 24 Jul 2018 13:02:29 GMT
Connection: keep-alive
ETag: "5b572365-264"
Accept-Ranges: bytes
# netstat -ntlp | grep 80
tcp6 0 0 :::80 :::* LISTEN 2605/docker-proxy
# docker port nginx
80/tcp -> 0.0.0.0:80
首先从公共仓库中获取到nginx的镜像，pull下载到本地；docker image查看本地镜像，然后根据镜像创建一个docker的实例，也就是容器nginx，然后运行实例，请求这个端口得到结果，查看本机已经监听了这个端口，docker port主要用来查看端口的映射关系。
2 查看网络
# ip a
1: lo:mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno1:mtu 1500 qdisc mq state UP qlen 1000
link/ether 08:94:ef:18:b0:8f brd ff:ff:ff:ff:ff:ff
inet 192.168.10.138/24 brd 192.168.10.255 scope global eno1
valid_lft forever preferred_lft forever
inet6 fe80::a94:efff:fe18:b08f/64 scope link
valid_lft forever preferred_lft forever
3: eno2:mtu 1500 qdisc mq state DOWN qlen 1000
link/ether 08:94:ef:18:b0:90 brd ff:ff:ff:ff:ff:ff
4: eno3:mtu 1500 qdisc mq state DOWN qlen 1000
link/ether 08:94:ef:18:b0:91 brd ff:ff:ff:ff:ff:ff
5: eno4:mtu 1500 qdisc mq state DOWN qlen 1000
link/ether 08:94:ef:18:b0:92 brd ff:ff:ff:ff:ff:ff
6: enp0s20u1u5:mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
link/ether 0a:94:ef:18:b0:96 brd ff:ff:ff:ff:ff:ff
7: docker0:mtu 1500 qdisc noqueue state UP
link/ether 02:42:78:60:47:92 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:78ff:fe60:4792/64 scope link
valid_lft forever preferred_lft forever
33: vethea9786a@if32:mtu 1500 qdisc noqueue master docker0 state UP
link/ether 4a:b6:db:6f:15:e7 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::48b6:dbff:fe6f:15e7/64 scope link
valid_lft forever preferred_lft forever
47: vetha11f427@if46:mtu 1500 qdisc noqueue master docker0 state UP
link/ether f6:4d:ab:6b:8e:3e brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::f44d:abff:fe6b:8e3e/64 scope link
valid_lft forever preferred_lft forever
# ifconfig docker0
docker0: flags=4163mtu 1500
inet 172.17.0.1netmask 255.255.0.0broadcast 172.17.255.255
inet6 fe80::42:78ff:fe60:4792prefixlen 64scopeid 0x20
ether 02:42:78:60:47:92txqueuelen 0(Ethernet)
RX packets 195570bytes 14682556 (14.0 MiB)
RX errors 0dropped 0overruns 0frame 0
TX packets 184822bytes 104464536 (99.6 MiB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
# docker network inspect bridge
[
{
"Name": "bridge",
"Id": "6bdcec432a070b1e29a03ad5c706fd0aff49fd25bb9d0af139ae5c3f617c641e",
"Created": "2018-07-31T11:32:44.832618166+08:00",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "172.17.0.0/16",
"Gateway": "172.17.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"4bc701965bca81f89b684a2aa2c320c0f2bb48e14a29f99f80e5d5bfa877df06": {
"Name": "ws",
"EndpointID": "5b0020a6cdb814dc7dff1c780fd86a8898c1172ca0d6269333d48e51d008cc7c",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"IPv6Address": ""
},
"6af5902d98c086d28964e09669347a74354436d06eb8620f6a6bc65064974d8e": {
"Name": "nginx",
"EndpointID": "ade30754ab51e3e53008caac9affc0cb542e3316594cac0c623a8c75c200be2d",
"MacAddress": "02:42:ac:11:00:03",
"IPv4Address": "172.17.0.3/16",
"IPv6Address": ""
}
},
"Options": {
"com.docker.network.bridge.default_bridge": "true",
"com.docker.network.bridge.enable_icc": "true",
"com.docker.network.bridge.enable_ip_masquerade": "true",
"com.docker.network.bridge.host_binding_ipv4": "0.0.0.0",
"com.docker.network.bridge.name": "docker0",
"com.docker.network.driver.mtu": "1500"
},
"Labels": {}
}
]
参考https://mp.weixin.qq.com/s/-ePfdqp114JXjeNyrl7CxA
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