docker 常用操作-学习笔记
1 进入容器
[root@localhost ~]# 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
[root@localhost ~]# docker start nginx
nginx[root@localhost ~]# 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
[root@localhost ~]# docker exec -it dcd05bed40d6 /bin/bash
[root@dcd05bed40d6 ansible]# exit
exit
[root@localhost ~]# docker exec -it nginx /bin/bash
[root@dcd05bed40d6 ansible]# exit
exitexec 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
[root@localhost /]# docker logs nginx
172.17.0.1 - - [31/Jul/2018:09:27:21 +0000] "HEAD / HTTP/1.1" 200 0 "-" "curl/7.29.0" "-"
[root@localhost /]# docker logs nginx
172.17.0.1 - - [31/Jul/2018:09:27:21 +0000] "HEAD / HTTP/1.1" 200 0 "-" "curl/7.29.0" "-"
[root@localhost /]# docker logs nginx >nginxaccess.log
[root@localhost /]# more nginxaccess.log
172.17.0.1 - - [31/Jul/2018:09:27:21 +0000] "HEAD / HTTP/1.1" 200 0 "-" "curl/7.29.0" "-"3 启动，停止 重启容器
[root@localhost /]# docker stop nginx
nginx
[root@localhost /]# docker start nginx
nginx
[root@localhost /]# docker restart nginx
nginx
[root@localhost /]# 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
[root@localhost /]# docker logs nginx
172.17.0.1 - - [31/Jul/2018:09:27:21 +0000] "HEAD / HTTP/1.1" 200 0 "-" "curl/7.29.0" "-"nginx实例操作
- 端口映射
[root@localhost /]# 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[root@localhost /]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE nginx latest c82521676580 6 days ago 109MB ansible/centos7-ansible latest 688353a31fde 19 months ago 447MB[root@localhost /]# docker run -itd --name nginx -p 80:80 docker.io/nginx 6af5902d98c086d28964e09669347a74354436d06eb8620f6a6bc65064974d8e[root@localhost /]# 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[root@localhost /]# 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[root@localhost /]# netstat -ntlp | grep 80 tcp6 0 0 :::80 :::* LISTEN 2605/docker-proxy [root@localhost /]# 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
[root@localhost ~]# 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
[root@localhost ~]# ifconfig docker0
docker0: flags=4163 mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
inet6 fe80::42:78ff:fe60:4792 prefixlen 64 scopeid 0x20
ether 02:42:78:60:47:92 txqueuelen 0 (Ethernet)
RX packets 195570 bytes 14682556 (14.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 184822 bytes 104464536 (99.6 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@localhost ~]# 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
转载于:https://blog.51cto.com/9201316/2153074