Docker容器的设置资源（cpu，内存）限制：
#docker run –memory=200M xxxx-image --vm 1 –verbose
#docker run --cpu-shares=10 --name=test1 xxx-image --cpu 1
#docker run --cpu-shares=5 --name=test2 xxx-image --cpu 2
底层技术支持：
(1) Namespaces : 做隔离pid, net, ipc, mnt, uts
(2) Control groups : 做资源限制
(3) Union file systems ：Container和image的分层；
[root@zizhen02 ~]# docker run --cpu-shares=2 --name=test3 ubuntu-stress --cpu 1
stress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
[root@zizhen02 ~]# docker run --cpu-shares=4 ubuntu-stress --cpu 1
stress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
Tasks: 116 total, 3 running, 113 sleeping, 0 stopped, 0 zombie
%Cpu(s):100.0 us, 0.0 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 1863224 total, 1062620 free, 381180 used, 419424 buff/cache
KiB Swap: 1572860 total, 1503996 free, 68864 used. 1276984 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
8654 root 20 0 8228 100 0 R 66.4 0.0 0:04.76 stress
8542 root 20 0 8228 96 0 R 32.9 0.0 0:40.13 stress
Docker网络技术
分单机和多机：
单机有三种：bridge Network 、Host Network、None Network;
多机： Overlay Network ;
#docker ps
#docker exec [container-ID] ip a
#ip netns list 列出命名空间
#ip netns delete test1 删除test1
#ip netns list
#ip netns add test1 增加test1
#ip netns list
#ip netns exec test1 ip a 在test1中执行ip a ;
# ip netns exec test1 ip link set dev lo up 在test1 执行命令lo端口up状态；
[root@zizhen02 ~]# ip netns exec test1 ip a
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
[root@zizhen02 ~]# ip netns exec test1 ip link set dev lo up
[root@zizhen02 ~]# ip netns list
test1
[root@zizhen02 ~]# ip netns exec test1 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
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
[root@zizhen02 ~]#
测试创建NameSpace
[root@zizhen02 ~]# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:d4:5d:cf:c5 brd ff:ff:ff:ff:ff:ff
[root@zizhen02 ~]# ip link add veth-test1 type veth peer name veth-test2
[root@zizhen02 ~]# ip netns list
[root@zizhen02 ~]# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:d4:5d:cf:c5 brd ff:ff:ff:ff:ff:ff
8: veth-test2@veth-test1: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether c6:97:91:b0:31:9c brd ff:ff:ff:ff:ff:ff
9: veth-test1@veth-test2: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 8e:69:f6:fd:e5:87 brd ff:ff:ff:ff:ff:ff
[root@zizhen02 ~]# ip netns exec test1 ip link
Cannot open network namespace "test1": No such file or directory
[root@zizhen02 ~]# ip netns add test1
[root@zizhen02 ~]# ip netns list
test1
[root@zizhen02 ~]# ip netns exec test1 ip link
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
[root@zizhen02 ~]# ip link set veth-test1 netns test1
[root@zizhen02 ~]# ip netns exec test1 ip link
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
9: veth-test1@if8: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 8e:69:f6:fd:e5:87 brd ff:ff:ff:ff:ff:ff link-netnsid 0
[root@zizhen02 ~]# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:d4:5d:cf:c5 brd ff:ff:ff:ff:ff:ff
8: veth-test2@if9: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether c6:97:91:b0:31:9c brd ff:ff:ff:ff:ff:ff link-netnsid 0
[root@zizhen02 ~]#
[root@zizhen02 ~]#
[root@zizhen02 ~]#
[root@zizhen02 ~]# ip netns add test2
[root@zizhen02 ~]# ip netns list
test2
test1 (id: 0)
[root@zizhen02 ~]# ip netns exec test2 ip link
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
[root@zizhen02 ~]# ip link set veth-test2 netns test2
[root@zizhen02 ~]# ip netns exec test2 ip link
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
8: veth-test2@if9: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether c6:97:91:b0:31:9c brd ff:ff:ff:ff:ff:ff link-netnsid 0
[root@zizhen02 ~]# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:d4:5d:cf:c5 brd ff:ff:ff:ff:ff:ff
[root@zizhen02 ~]#
[root@zizhen02 ~]#
[root@zizhen02 ~]# ip netns exec test1 ip addr add 192.168.0.1/24 dev veth-test1
[root@zizhen02 ~]# ip netns exec test2 ip addr add 192.168.0.2/24 dev veth-test2
[root@zizhen02 ~]# ip netns exec test2 ip link
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
8: veth-test2@if9: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether c6:97:91:b0:31:9c brd ff:ff:ff:ff:ff:ff link-netnsid 0
[root@zizhen02 ~]# ip netns exec test1 ip link
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
9: veth-test1@if8: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 8e:69:f6:fd:e5:87 brd ff:ff:ff:ff:ff:ff link-netnsid 1
[root@zizhen02 ~]# ip netns exec test1 ip link set dev veth-test1 up
[root@zizhen02 ~]# ip netns exec test2 ip link set dev veth-test1 up
Cannot find device "veth-test1"
[root@zizhen02 ~]# ip netns exec test2 ip link set dev veth-test2 up
[root@zizhen02 ~]#
[root@zizhen02 ~]# ip netns exec test1 ip link
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
9: veth-test1@if8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether 8e:69:f6:fd:e5:87 brd ff:ff:ff:ff:ff:ff link-netnsid 1
[root@zizhen02 ~]# ip netns exec test2 ip link
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
8: veth-test2@if9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether c6:97:91:b0:31:9c brd ff:ff:ff:ff:ff:ff link-netnsid 0
[root@zizhen02 ~]# ip netns exec test1 ip a
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
9: veth-test1@if8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 8e:69:f6:fd:e5:87 brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet 192.168.0.1/24 scope global veth-test1
valid_lft forever preferred_lft forever
inet6 fe80::8c69:f6ff:fefd:e587/64 scope link
valid_lft forever preferred_lft forever
[root@zizhen02 ~]# ip netns exec test2 ip a
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
8: veth-test2@if9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether c6:97:91:b0:31:9c brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 192.168.0.2/24 scope global veth-test2
valid_lft forever preferred_lft forever
inet6 fe80::c497:91ff:feb0:319c/64 scope link
valid_lft forever preferred_lft forever
[root@zizhen02 ~]# ip netns exec test1 ping 192.168.0.2
PING 192.168.0.2 (192.168.0.2) 56(84) bytes of data.
64 bytes from 192.168.0.2: icmp_seq=1 ttl=64 time=0.075 ms
64 bytes from 192.168.0.2: icmp_seq=2 ttl=64 time=0.048 ms
64 bytes from 192.168.0.2: icmp_seq=3 ttl=64 time=0.052 ms
^C
--- 192.168.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.048/0.058/0.075/0.013 ms
[root@zizhen02 ~]# ip netns exec test2 ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=64 time=0.050 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=64 time=0.059 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=64 time=0.049 ms
^C
--- 192.168.0.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.049/0.052/0.059/0.009 ms
[root@zizhen02 ~]#
[root@zizhen02 ~]# ip netns list
test2 (id: 1)
test1 (id: 0)
以上和container 中的namespace原理是一样的；
31 docker Bridge0详解
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
ba670d30bad7 bridge bridge local
63c3ce67f785 host host local
04734d810393 none null local
[root@zizhen02 ~]#
[root@zizhen02 ~]# docker run -it busybox /bin/sh
/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
16: eth0@if17: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
/ #
[root@zizhen02 ~]# docker network
Usage: docker network COMMAND
Manage networks
Commands:
connect Connect a container to a network
create Create a network
disconnect Disconnect a container from a network
inspect Display detailed information on one or more networks
ls List networks
prune Remove all unused networks
rm Remove one or more networks
Run 'docker network COMMAND --help' for more information on a command.
[root@zizhen02 ~]# docker network inspect
"docker network inspect" requires at least 1 argument.
See 'docker network inspect --help'.
Usage: docker network inspect [OPTIONS] NETWORK [NETWORK...]
Display detailed information on one or more networks
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
20ec4d84140c busybox "/bin/sh" About a minute ago Up About a minute thirsty_poitras
[root@zizhen02 ~]# docker network inspect 20ec4d84140c
[]
Error: No such network: 20ec4d84140c
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
ba670d30bad7 bridge bridge local
63c3ce67f785 host host local
04734d810393 none null local
[root@zizhen02 ~]# docker network inspect ba670d30bad7
[
{
"Name": "bridge",
"Id": "ba670d30bad79bfe622c99522aabfb60581181f4c69ebf42b0d6ca56904312a7",
"Created": "2019-03-17T16:25:22.229320555+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": {
"20ec4d84140c8e5b6bd183d51501c2c93a68748fd0b917c54d1986629132a872": {
"Name": "thirsty_poitras",
"EndpointID": "37e6bdd9da3b2841800372e018359a2f6ed76663c89a01e74032e8300bfca0c5",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"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": {}
}
]
[root@zizhen02 ~]#
[root@zizhen02 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.107/24 brd 192.168.1.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fecb:78e2/64 scope link
valid_lft forever preferred_lft forever
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:d4:5d:cf:c5 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:d4ff:fe5d:cfc5/64 scope link
valid_lft forever preferred_lft forever
17: veth7b3ed30@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
link/ether d2:30:94:3a:f8:e7 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::d030:94ff:fe3a:f8e7/64 scope link
valid_lft forever preferred_lft forever
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
20ec4d84140c busybox "/bin/sh" 39 minutes ago Up 39 minutes thirsty_poitras
[root@zizhen02 ~]# docker exec 20ec4d84140c ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
16: eth0@if17: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
[root@zizhen02 ~]#
#yum install bridge-utils 安装brctl命令
[root@zizhen02 ~]# brctl
Usage: brctl [commands]
commands:
addbr <bridge> add bridge
delbr <bridge> delete bridge
addif <bridge> <device> add interface to bridge
delif <bridge> <device> delete interface from bridge
hairpin <bridge> <port> {on|off} turn hairpin on/off
setageing <bridge> <time> set ageing time
setbridgeprio <bridge> <prio> set bridge priority
setfd <bridge> <time> set bridge forward delay
sethello <bridge> <time> set hello time
setmaxage <bridge> <time> set max message age
setpathcost <bridge> <port> <cost> set path cost
setportprio <bridge> <port> <prio> set port priority
show [ <bridge> ] show a list of bridges
showmacs <bridge> show a list of mac addrs
showstp <bridge> show bridge stp info
stp <bridge> {on|off} turn stp on/off
[root@zizhen02 ~]# brctl show
bridge name bridge id STP enabled interfaces
docker0 8000.0242d45dcfc5 no veth7b3ed30
[root@zizhen02 ~]#
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
241e3d0e5472 busybox "/bin/sh" 13 seconds ago Up 12 seconds test2
20ec4d84140c busybox "/bin/sh" About an hour ago Up About an hour thirsty_poitras
[root@zizhen02 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.107/24 brd 192.168.1.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fecb:78e2/64 scope link
valid_lft forever preferred_lft forever
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:d4:5d:cf:c5 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:d4ff:fe5d:cfc5/64 scope link
valid_lft forever preferred_lft forever
17: veth7b3ed30@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
link/ether d2:30:94:3a:f8:e7 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::d030:94ff:fe3a:f8e7/64 scope link
valid_lft forever preferred_lft forever
21: vethe2d3a11@if20: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
link/ether c2:7c:c2:70:7a:83 brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::c07c:c2ff:fe70:7a83/64 scope link
valid_lft forever preferred_lft forever
[root@zizhen02 ~]# docker exec test2 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
20: eth0@if21: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:11:00:03 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.3/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
[root@zizhen02 ~]# docker exec 20ec4d84140c ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
16: eth0@if17: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
[root@zizhen02 ~]#
bridge name bridge id STP enabled interfaces
docker0 8000.0242d45dcfc5 no veth7b3ed30
vethe2d3a11
[root@zizhen02 ~]# docker network inspect bridge
[
{
"Name": "bridge",
"Id": "ba670d30bad79bfe622c99522aabfb60581181f4c69ebf42b0d6ca56904312a7",
"Created": "2019-03-17T16:25:22.229320555+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": {
"20ec4d84140c8e5b6bd183d51501c2c93a68748fd0b917c54d1986629132a872": {
"Name": "thirsty_poitras",
"EndpointID": "37e6bdd9da3b2841800372e018359a2f6ed76663c89a01e74032e8300bfca0c5",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"IPv6Address": ""
},
"241e3d0e5472226ed17d11c66dcaa33869c7f956c469c20e3e2494847c586bdb": {
"Name": "test2",
"EndpointID": "e21cb10c66681e19f67240a60199d37d34070a8aa3bf104d86048e72d447cd19",
"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": {}
}
]
[root@zizhen02 ~]#
如何访问外网
32 Docker多容器通信：
--link test1 #相当于给容器添加了一个dns记录；
[root@zizhen02 ~]# docker run -it --name=test1 busybox
/ #
/ #
/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
6: eth0@if7: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
/ #
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4e4298cae8d2 busybox "sh" 5 minutes ago Up 5 minutes test1
[root@zizhen02 ~]# docker run -it --name=test2 --link test1 busybox /bin/sh
/ #
/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
10: eth0@if11: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:11:00:03 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.3/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
/ # ping 172.17.0.2
PING 172.17.0.2 (172.17.0.2): 56 data bytes
64 bytes from 172.17.0.2: seq=0 ttl=64 time=0.351 ms
64 bytes from 172.17.0.2: seq=1 ttl=64 time=0.160 ms
^C
--- 172.17.0.2 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 0.160/0.255/0.351 ms
/ # ping test1
PING test1 (172.17.0.2): 56 data bytes
64 bytes from 172.17.0.2: seq=0 ttl=64 time=0.171 ms
64 bytes from 172.17.0.2: seq=1 ttl=64 time=0.159 ms
64 bytes from 172.17.0.2: seq=2 ttl=64 time=0.160 ms
^C
--- test1 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 0.159/0.163/0.171 ms
/ # test1:3306^C
/ #
/ #
[root@zizhen02 ~]# docker run -it --name=test1 busybox
/ #
/ #
/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
6: eth0@if7: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
/ #
/ # ping 172.17.0.3
PING 172.17.0.3 (172.17.0.3): 56 data bytes
64 bytes from 172.17.0.3: seq=0 ttl=64 time=0.264 ms
64 bytes from 172.17.0.3: seq=1 ttl=64 time=0.369 ms
^C
--- 172.17.0.3 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 0.264/0.316/0.369 ms
/ # ping test2
ping: bad address 'test2'
/ #
/ #
创建docker 的Network；
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
a5950ee18ba0 bridge bridge local
63c3ce67f785 host host local
04734d810393 none null local
[root@zizhen02 ~]# docker network create -d bridge my-bridge
831bb402cb76aaf543a53652e1c24d7128b23ee34bcdf40f97e6d0dbb93dea48
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
a5950ee18ba0 bridge bridge local
63c3ce67f785 host host local
831bb402cb76 my-bridge bridge local
04734d810393 none null local
[root@zizhen02 ~]#
[root@zizhen02 ~]# brctl show
bridge name bridge id STP enabled interfaces
br-831bb402cb76 8000.02428cb086ee no
docker0 8000.024230fa6b46 no veth48b93cc
vethe56d79c
[root@zizhen02 ~]#
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
303720caaf49 busybox "/bin/sh" 20 seconds ago Up 18 seconds test3
3929edfaabbf busybox "/bin/sh" 9 minutes ago Up 9 minutes test2
4e4298cae8d2 busybox "sh" 15 minutes ago Up 15 minutes test1
[root@zizhen02 ~]# brctl show
bridge name bridge id STP enabled interfaces
br-831bb402cb76 8000.02428cb086ee no vetha25a34c
docker0 8000.024230fa6b46 no veth48b93cc
vethe56d79c
[root@zizhen02 ~]# docker network inspect 831bb402cb76
[
{
"Name": "my-bridge",
"Id": "831bb402cb76aaf543a53652e1c24d7128b23ee34bcdf40f97e6d0dbb93dea48",
"Created": "2019-03-19T11:51:22.983099054+08:00",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "172.18.0.0/16",
"Gateway": "172.18.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"303720caaf49932f8d7a90538869d7a4e4d0dca79f788c867e2ac654be90b905": {
"Name": "test3",
"EndpointID": "9d2ab6fdee54e5000af6782919de76330d9b2acecd99add74e9653ed6ff1624c",
"MacAddress": "02:42:ac:12:00:02",
"IPv4Address": "172.18.0.2/16",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]
[root@zizhen02 ~]#
[root@zizhen02 ~]# docker run -it --name test3 --network my-bridge busybox /bin/sh
/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
13: eth0@if14: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:12:00:02 brd ff:ff:ff:ff:ff:ff
inet 172.18.0.2/16 brd 172.18.255.255 scope global eth0
valid_lft forever preferred_lft forever
/ #
#以上my-bridge 里有一个test3 ；my-bridge 连接到test3上了。
#将已有的容器test2 ，连接到my-bridge上；
[root@zizhen02 ~]# docker network
Usage: docker network COMMAND
Manage networks
Commands:
connect Connect a container to a network
create Create a network
disconnect Disconnect a container from a network
inspect Display detailed information on one or more networks
ls List networks
prune Remove all unused networks
rm Remove one or more networks
Run 'docker network COMMAND --help' for more information on a command.
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
303720caaf49 busybox "/bin/sh" 19 minutes ago Up 19 minutes test3
3929edfaabbf busybox "/bin/sh" 28 minutes ago Up 28 minutes test2
4e4298cae8d2 busybox "sh" 34 minutes ago Up 34 minutes test1
[root@zizhen02 ~]# docker network connect
"docker network connect" requires exactly 2 arguments.
See 'docker network connect --help'.
Usage: docker network connect [OPTIONS] NETWORK CONTAINER
Connect a container to a network
[root@zizhen02 ~]# docker network connect my-bridge test2
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
a5950ee18ba0 bridge bridge local
63c3ce67f785 host host local
831bb402cb76 my-bridge bridge local
04734d810393 none null local
[root@zizhen02 ~]# docker network inspect 831bb402cb76
[
{
"Name": "my-bridge",
"Id": "831bb402cb76aaf543a53652e1c24d7128b23ee34bcdf40f97e6d0dbb93dea48",
"Created": "2019-03-19T11:51:22.983099054+08:00",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "172.18.0.0/16",
"Gateway": "172.18.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"303720caaf49932f8d7a90538869d7a4e4d0dca79f788c867e2ac654be90b905": {
"Name": "test3",
"EndpointID": "9d2ab6fdee54e5000af6782919de76330d9b2acecd99add74e9653ed6ff1624c",
"MacAddress": "02:42:ac:12:00:02",
"IPv4Address": "172.18.0.2/16",
"IPv6Address": ""
},
"3929edfaabbf9e483020bdddf16278527496e9cad87aa0068cadea32899d5c2a": {
"Name": "test2",
"EndpointID": "a04c261ab21a456e2c963644ae93b54077ca704d59df872f926545d989f97acf",
"MacAddress": "02:42:ac:12:00:03",
"IPv4Address": "172.18.0.3/16",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
a5950ee18ba0 bridge bridge local
63c3ce67f785 host host local
831bb402cb76 my-bridge bridge local
04734d810393 none null local
[root@zizhen02 ~]# docker network inspect a5950ee18ba0
[
{
"Name": "bridge",
"Id": "a5950ee18ba0f1ab93c5ae276f3123c4d657edef17d6fad9c5c13b23f952e507",
"Created": "2019-03-19T11:33:02.336302433+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": {
"3929edfaabbf9e483020bdddf16278527496e9cad87aa0068cadea32899d5c2a": {
"Name": "test2",
"EndpointID": "75b242bb36530983d83a602e128838fc32854b38553108575db53cbe2505912f",
"MacAddress": "02:42:ac:11:00:03",
"IPv4Address": "172.17.0.3/16",
"IPv6Address": ""
},
"4e4298cae8d2832a0381c3b722dd821f4bc29a1f5bc349eb755aa9a7a69417bd": {
"Name": "test1",
"EndpointID": "d6940d5fa36e857af209bafa330f23fab82dd685b1c89d5840b7c33953edf8c5",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"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": {}
}
]
[root@zizhen02 ~]#test2
/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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
10: eth0@if11: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:11:00:03 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.3/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
15: eth1@if16: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
link/ether 02:42:ac:12:00:03 brd ff:ff:ff:ff:ff:ff
inet 172.18.0.3/16 brd 172.18.255.255 scope global eth1
valid_lft forever preferred_lft forever
/ #
33 Docker的端口映射;
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
303720caaf49 busybox "/bin/sh" 8 hours ago Up 8 hours test3
3929edfaabbf busybox "/bin/sh" 8 hours ago Up 8 hours test2
4e4298cae8d2 busybox "sh" 8 hours ago Up 8 hours test1
[root@zizhen02 ~]# docker container stop test1 test2 test3
test1
test2
test3
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@zizhen02 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
303720caaf49 busybox "/bin/sh" 8 hours ago Exited (137) 12 seconds ago test3
3929edfaabbf busybox "/bin/sh" 8 hours ago Exited (137) 12 seconds ago test2
4e4298cae8d2 busybox "sh" 8 hours ago Exited (137) 12 seconds ago test1
[root@zizhen02 ~]# docker rm $(docker ps -aq)
303720caaf49
3929edfaabbf
4e4298cae8d2
[root@zizhen02 ~]#
[root@zizhen02 ~]# docker run --name web -it nginx /bin/sh
##
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5f282b674f11 nginx "/bin/sh" 15 seconds ago Up 14 seconds 80/tcp web
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
a5950ee18ba0 bridge bridge local
63c3ce67f785 host host local
831bb402cb76 my-bridge bridge local
04734d810393 none null local
[root@zizhen02 ~]# docker network
Usage: docker network COMMAND
Manage networks
Commands:
connect Connect a container to a network
create Create a network
disconnect Disconnect a container from a network
inspect Display detailed information on one or more networks
ls List networks
prune Remove all unused networks
rm Remove one or more networks
Run 'docker network COMMAND --help' for more information on a command.
[root@zizhen02 ~]# docker network inspect bridge
[
{
"Name": "bridge",
"Id": "a5950ee18ba0f1ab93c5ae276f3123c4d657edef17d6fad9c5c13b23f952e507",
"Created": "2019-03-19T11:33:02.336302433+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": {
"5f282b674f117e894241ff5a35b71c4e822531a0764c9794a9ab2f9e5d74a5f9": {
"Name": "web",
"EndpointID": "581ee02b485e99af966eae09c5c16800beb36c6800320c12a0bbd136f6c9cc82",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"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": {}
}
]
[root@zizhen02 ~]#
[root@zizhen02 ~]# ping 172.17.0.2
PING 172.17.0.2 (172.17.0.2) 56(84) bytes of data.
64 bytes from 172.17.0.2: icmp_seq=1 ttl=64 time=0.090 ms
64 bytes from 172.17.0.2: icmp_seq=2 ttl=64 time=0.102 ms
64 bytes from 172.17.0.2: icmp_seq=3 ttl=64 time=0.101 ms
^C
--- 172.17.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.090/0.097/0.102/0.012 ms
[root@zizhen02 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.107/24 brd 192.168.1.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fecb:78e2/64 scope link
valid_lft forever preferred_lft forever
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:30:fa:6b:46 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::42:30ff:fefa:6b46/64 scope link
valid_lft forever preferred_lft forever
12: br-831bb402cb76: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:8c:b0:86:ee brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 brd 172.18.255.255 scope global br-831bb402cb76
valid_lft forever preferred_lft forever
inet6 fe80::42:8cff:feb0:86ee/64 scope link
valid_lft forever preferred_lft forever
22: vethc682429@if21: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
link/ether be:55:99:e1:ae:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::bc55:99ff:fee1:ae0a/64 scope link
valid_lft forever preferred_lft forever
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
a5950ee18ba0 bridge bridge local
63c3ce67f785 host host local
831bb402cb76 my-bridge bridge local
04734d810393 none null local
[root@zizhen02 ~]# brctl show
bridge name bridge id STP enabled interfaces
br-831bb402cb76 8000.02428cb086ee no
docker0 8000.024230fa6b46 no vethc682429
[root@zizhen02 ~]# docker network inspect bridge
[
{
"Name": "bridge",
"Id": "a5950ee18ba0f1ab93c5ae276f3123c4d657edef17d6fad9c5c13b23f952e507",
"Created": "2019-03-19T11:33:02.336302433+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": {
"5f282b674f117e894241ff5a35b71c4e822531a0764c9794a9ab2f9e5d74a5f9": {
"Name": "web",
"EndpointID": "581ee02b485e99af966eae09c5c16800beb36c6800320c12a0bbd136f6c9cc82",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"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": {}
}
]
[root@zizhen02 ~]#
[root@zizhen02 ~]# ping 172.17.0.2
PING 172.17.0.2 (172.17.0.2) 56(84) bytes of data.
64 bytes from 172.17.0.2: icmp_seq=1 ttl=64 time=0.087 ms
64 bytes from 172.17.0.2: icmp_seq=2 ttl=64 time=0.051 ms
^C
--- 172.17.0.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.051/0.069/0.087/0.018 ms
[root@zizhen02 ~]# telnet 172.17.0.2 80
Trying 172.17.0.2...
Connected to 172.17.0.2.
Escape character is '^]'.
^CConnection closed by foreign host.
[root@zizhen02 ~]# curl https://172.17.0.2
curl: (7) Failed connect to 172.17.0.2:443; Connection refused
[root@zizhen02 ~]# curl http://172.17.0.2
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
[root@zizhen02 ~]#
[root@zizhen02 ~]# docker run --name web -it nginx
172.17.0.1 - - [19/Mar/2019:12:08:16 +0000] "\xFF\xF4\xFF\xFD\x06" 400 157 "-" "-" "-"
172.17.0.1 - - [19/Mar/2019:12:08:43 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.29.0" "-"
34 网络的none(安全性，容器没有IP)和host(复制本机IP)
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
d3ae3a3a685b bridge bridge local
63c3ce67f785 host host local
831bb402cb76 my-bridge bridge local
04734d810393 none null local
[root@zizhen02 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu-stress latest aee6e531355c 2 weeks ago 114MB
xiaoming163/python2.7-flask-hello latest b66a7f86bd45 2 weeks ago 918MB
xiaoming/centos-cmd latest 729b948e1319 2 weeks ago 202MB
xiaoming/centos-entrypoint-exec-new2 latest 249a9c95d9be 2 weeks ago 202MB
xiaoming/centos-entrypoint-shell latest 344ec38e6b59 2 weeks ago 202MB
xiaoming163/centos-vim-new latest f9f19d2bc847 2 weeks ago 335MB
ubuntu latest 94e814e2efa8 2 weeks ago 88.9MB
xiaoli163/hello-world latest a821094d0306 2 weeks ago 857kB
python 2.7 3be5dc25d0fa 3 weeks ago 914MB
nginx latest 881bd08c0b08 3 weeks ago 109MB
busybox latest d8233ab899d4 6 weeks ago 1.2MB
ubuntu 14.04 5dbc3f318ea5 2 months ago 188MB
centos latest 1e1148e4cc2c 3 months ago 202MB
[root@zizhen02 ~]# docker run -d --name test1 --network none centos /bin/sh -c "while true; do sleep 3600; done"
afbcac0fcf7bb5d9aa2ea7dd52016b63c81651cee73086c801d7167b0f0e76c9
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
afbcac0fcf7b centos "/bin/sh -c 'while t…" 8 seconds ago Up 5 seconds test1
[root@zizhen02 ~]# docker network
Usage: docker network COMMAND
Manage networks
Commands:
connect Connect a container to a network
create Create a network
disconnect Disconnect a container from a network
inspect Display detailed information on one or more networks
ls List networks
prune Remove all unused networks
rm Remove one or more networks
Run 'docker network COMMAND --help' for more information on a command.
[root@zizhen02 ~]# docker network inspect none
[
{
"Name": "none",
"Id": "04734d810393e035502143a42546df16f46c75d6b3bb9724a6d1e1fa1a06655b",
"Created": "2019-03-09T19:48:34.111853947+08:00",
"Scope": "local",
"Driver": "null",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": []
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"afbcac0fcf7bb5d9aa2ea7dd52016b63c81651cee73086c801d7167b0f0e76c9": {
"Name": "test1",
"EndpointID": "82f126807d6be5926a656b91dfe05c4677711fa5222b28b9d0225645bbfae6eb",
"MacAddress": "",
"IPv4Address": "",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
d3ae3a3a685b bridge bridge local
63c3ce67f785 host host local
831bb402cb76 my-bridge bridge local
04734d810393 none null local
[root@zizhen02 ~]# docker exec -it test1 /bin/sh
sh-4.2#
sh-4.2#
sh-4.2# ip a
sh: ip: command not found
sh-4.2# ifconfig
sh: ifconfig: command not found
sh-4.2# ip a
sh: ip: command not found
sh-4.2# exit
exit
[root@zizhen02 ~]# docker exec -it test1 /bin/sh ip a
/bin/sh: ip: No such file or directory
[root@zizhen02 ~]# docker stop test1
test1
[root@zizhen02 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
afbcac0fcf7b centos "/bin/sh -c 'while t…" 5 minutes ago Exited (137) 17 seconds ago test1
[root@zizhen02 ~]# docker rm test1
test1
[root@zizhen02 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@zizhen02 ~]# docker run -d --name test1 --network host busybox /bin/sh -c "while true; do sleep 3600; done"
9658f41b026b65712fcd2cd05ef757a0cbd5359f05bca28511f8b5bb7d8270c7
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9658f41b026b busybox "/bin/sh -c 'while t…" 7 seconds ago Up 5 seconds test1
[root@zizhen02 ~]# docker network inspect host
[
{
"Name": "host",
"Id": "63c3ce67f785e1d720a641f279d9dc96854a6fc83cd2a81d73b564d9a3289434",
"Created": "2019-03-09T19:48:34.125978113+08:00",
"Scope": "local",
"Driver": "host",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": []
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"9658f41b026b65712fcd2cd05ef757a0cbd5359f05bca28511f8b5bb7d8270c7": {
"Name": "test1",
"EndpointID": "2d724f29c7c62b870b14839cb5e7c2e4a3dc9c617a108e1cb1b12aa1606202c4",
"MacAddress": "",
"IPv4Address": "",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]
[root@zizhen02 ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
d3ae3a3a685b bridge bridge local
63c3ce67f785 host host local
831bb402cb76 my-bridge bridge local
04734d810393 none null local
[root@zizhen02 ~]# docker exec -it test1 /bin/sh
/ #
/ #
/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.107/24 brd 192.168.1.255 scope global ens33
valid_lft forever preferred_lft forever
inet 192.168.1.110/24 brd 192.168.1.255 scope global secondary dynamic ens33
valid_lft 6019sec preferred_lft 6019sec
inet6 fe80::20c:29ff:fecb:78e2/64 scope link
valid_lft forever preferred_lft forever
3: br-831bb402cb76: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
link/ether 02:42:56:03:f8:a5 brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 brd 172.18.255.255 scope global br-831bb402cb76
valid_lft forever preferred_lft forever
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
link/ether 02:42:0b:b3:c0:6a 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
/ # exit
[root@zizhen02 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:cb:78:e2 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.107/24 brd 192.168.1.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet 192.168.1.110/24 brd 192.168.1.255 scope global secondary dynamic ens33
valid_lft 6004sec preferred_lft 6004sec
inet6 fe80::20c:29ff:fecb:78e2/64 scope link
valid_lft forever preferred_lft forever
3: br-831bb402cb76: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:56:03:f8:a5 brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 brd 172.18.255.255 scope global br-831bb402cb76
valid_lft forever preferred_lft forever
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:0b:b3:c0:6a 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
[root@zizhen02 ~]#
35Docker在多容器中部署：（-e参数在容器中设置环境变量）
[root@zizhen02 ~]# mkdir flask-redis
[root@zizhen02 ~]# cd flask-redis/
[root@zizhen02 flask-redis]# pwd
/root/flask-redis
[root@zizhen02 flask-redis]# vim Dockerfile
[root@zizhen02 flask-redis]# more Dockerfile
FROM python:2.7
LABEL maintaner="Xiao ming"
COPY . /app
WORKDIR /app
RUN pip install flask redis
EXPOSE 5000
CMD [ "python","app.py" ]
[root@zizhen02 flask-redis]# ls
Dockerfile
[root@zizhen02 flask-redis]# vim app.py
[root@zizhen02 flask-redis]# more app.py
from flask import Flask
from redis import Redis
import os
import socket
app = Flask(__name__)
redis = Redis(host=os.environ.get('REDIS_HOST','127.0.0.1'), port=6379)
@app.route('/')
def hello():
redis.incr('hits')
return 'Hello Container world! I have been seen %s times and my hostname is %s.\n' % (redis.get('hit
s'),socket.gethostname())
if __name__=="__main__":
app.run(host="0.0.0.0", port=5000, debug=True)
[root@zizhen02 flask-redis]#
[root@zizhen02 flask-redis]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9658f41b026b busybox "/bin/sh -c 'while t…" About an hour ago Up About an hour test1
[root@zizhen02 flask-redis]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@zizhen02 flask-redis]# docker run -d --name redis redis
67bd34c155034966f903d2f6d446012846a996855c08fa7dc7f98c34b8addf2a
[root@zizhen02 flask-redis]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
67bd34c15503 redis "docker-entrypoint.s…" 7 seconds ago Up 4 seconds 6379/tcp redis
[root@zizhen02 flask-redis]# docker build -t xiaoming163/flask-redis
"docker build" requires exactly 1 argument.
See 'docker build --help'.
Usage: docker build [OPTIONS] PATH | URL | -
Build an image from a Dockerfile
[root@zizhen02 flask-redis]# ls
app.py Dockerfile
[root@zizhen02 flask-redis]# docker build -t xiaoming163/flask-redis .
Sending build context to Docker daemon 3.072kB
Step 1/7 : FROM python:2.7
---> 3be5dc25d0fa
Step 2/7 : LABEL maintaner="Xiao ming"
---> Running in 9d474f0860e0
Removing intermediate container 9d474f0860e0
---> 84f0c1ed87e0
Step 3/7 : COPY . /app
---> 91afb3fb25e6
Step 4/7 : WORKDIR /app
---> Running in 8e306dfce059
Removing intermediate container 8e306dfce059
---> 5bd7c1fb4f3b
Step 5/7 : RUN pip install flask redis
---> Running in a0085bc60886
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
Collecting flask
Downloading https://files.pythonhosted.org/packages/7f/e7/08578774ed4536d3242b14dacb4696386634607af824ea997202cd0edb4b/Flask-1.0.2-py2.py3-none-any.whl (91kB)
Collecting redis
Downloading https://files.pythonhosted.org/packages/ac/a7/cff10cc5f1180834a3ed564d148fb4329c989cbb1f2e196fc9a10fa07072/redis-3.2.1-py2.py3-none-any.whl (65kB)
Collecting itsdangerous>=0.24 (from flask)
Downloading https://files.pythonhosted.org/packages/76/ae/44b03b253d6fade317f32c24d100b3b35c2239807046a4c953c7b89fa49e/itsdangerous-1.1.0-py2.py3-none-any.whl
Collecting Jinja2>=2.10 (from flask)
Downloading https://files.pythonhosted.org/packages/7f/ff/ae64bacdfc95f27a016a7bed8e8686763ba4d277a78ca76f32659220a731/Jinja2-2.10-py2.py3-none-any.whl (126kB)
Collecting Werkzeug>=0.14 (from flask)
Downloading https://files.pythonhosted.org/packages/24/4d/2fc4e872fbaaf44cc3fd5a9cd42fda7e57c031f08e28c9f35689e8b43198/Werkzeug-0.15.1-py2.py3-none-any.whl (328kB)
Collecting click>=5.1 (from flask)
Downloading https://files.pythonhosted.org/packages/fa/37/45185cb5abbc30d7257104c434fe0b07e5a195a6847506c074527aa599ec/Click-7.0-py2.py3-none-any.whl (81kB)
Collecting MarkupSafe>=0.23 (from Jinja2>=2.10->flask)
Downloading https://files.pythonhosted.org/packages/fb/40/f3adb7cf24a8012813c5edb20329eb22d5d8e2a0ecf73d21d6b85865da11/MarkupSafe-1.1.1-cp27-cp27mu-manylinux1_x86_64.whl
Installing collected packages: itsdangerous, MarkupSafe, Jinja2, Werkzeug, click, flask, redis
Successfully installed Jinja2-2.10 MarkupSafe-1.1.1 Werkzeug-0.15.1 click-7.0 flask-1.0.2 itsdangerous-1.1.0 redis-3.2.1
Removing intermediate container a0085bc60886
---> 515d6e526f2d
Step 6/7 : EXPOSE 5000
---> Running in a1add999fcee
Removing intermediate container a1add999fcee
---> bb4895bebac6
Step 7/7 : CMD [ "python","app.py" ]
---> Running in 0e036491cdf4
Removing intermediate container 0e036491cdf4
---> ff38b69e7d87
Successfully built ff38b69e7d87
Successfully tagged xiaoming163/flask-redis:latest
[root@zizhen02 flask-redis]# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
xiaoming163/flask-redis latest ff38b69e7d87 14 seconds ago 919MB
oraclelinux latest 62a654b8236d 30 hours ago 235MB
python 3.6 2bb3204ab1d1 3 days ago 924MB
redis latest a55fbf438dfd 4 days ago 95MB
ubuntu-stress latest aee6e531355c 2 weeks ago 114MB
xiaoming163/python2.7-flask-hello latest b66a7f86bd45 2 weeks ago 918MB
xiaoming/centos-cmd latest 729b948e1319 2 weeks ago 202MB
xiaoming/centos-entrypoint-exec-new2 latest 249a9c95d9be 2 weeks ago 202MB
xiaoming/centos-entrypoint-shell latest 344ec38e6b59 2 weeks ago 202MB
xiaoming163/centos-vim-new latest f9f19d2bc847 2 weeks ago 335MB
ubuntu latest 94e814e2efa8 2 weeks ago 88.9MB
xiaoli163/hello-world latest a821094d0306 2 weeks ago 857kB
python 2.7 3be5dc25d0fa 3 weeks ago 914MB
nginx latest 881bd08c0b08 3 weeks ago 109MB
busybox latest d8233ab899d4 6 weeks ago 1.2MB
ubuntu 14.04 5dbc3f318ea5 2 months ago 188MB
centos latest 1e1148e4cc2c 3 months ago 202MB
[root@zizhen02 flask-redis]# docker run -d --link redis --name flask-redis -e REDIS_HOST=redis xiaoming163/flask-redis
25f34556015a9a96421494478c8375d77f052ad59a726662550616c7a62accc8
[root@zizhen02 flask-redis]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
25f34556015a xiaoming163/flask-redis "python app.py" 7 seconds ago Up 5 seconds 5000/tcp flask-redis
67bd34c15503 redis "docker-entrypoint.s…" 15 minutes ago Up 14 minutes 6379/tcp redis
[root@zizhen02 flask-redis]# docker exec -it flask-redis /bin/bash
root@25f34556015a:/app#
root@25f34556015a:/app# env
REDIS_PORT_6379_TCP_PROTO=tcp
REDIS_PORT=tcp://172.17.0.2:6379
REDIS_NAME=/flask-redis/redis
LANG=C.UTF-8
HOSTNAME=25f34556015a
REDIS_PORT_6379_TCP_ADDR=172.17.0.2
REDIS_PORT_6379_TCP=tcp://172.17.0.2:6379
GPG_KEY=C01E1CAD5EA2C4F0B8E3571504C367C218ADD4FF
PYTHONIOENCODING=UTF-8
REDIS_ENV_REDIS_DOWNLOAD_URL=http://download.redis.io/releases/redis-5.0.4.tar.gz
REDIS_HOST=redis
PWD=/app
HOME=/root
REDIS_PORT_6379_TCP_PORT=6379
TERM=xterm
REDIS_ENV_REDIS_DOWNLOAD_SHA=3ce9ceff5a23f60913e1573f6dfcd4aa53b42d4a2789e28fa53ec2bd28c987dd
REDIS_ENV_GOSU_VERSION=1.10
PYTHON_VERSION=2.7.16
SHLVL=1
PATH=/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
REDIS_ENV_REDIS_VERSION=5.0.4
PYTHON_PIP_VERSION=19.0.3
_=/usr/bin/env
root@25f34556015a:/app# ping redis
PING redis (172.17.0.2) 56(84) bytes of data.
64 bytes from redis (172.17.0.2): icmp_seq=1 ttl=64 time=0.371 ms
64 bytes from redis (172.17.0.2): icmp_seq=2 ttl=64 time=0.116 ms
64 bytes from redis (172.17.0.2): icmp_seq=3 ttl=64 time=0.119 ms
^C
--- redis ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 0.116/0.202/0.371/0.119 ms
root@25f34556015a:/app# redis:6379
bash: redis:6379: command not found
root@25f34556015a:/app# curl 127.0.0.1:5000
Hello Container world! I have been seen 1 times and my hostname is 25f34556015a.
root@25f34556015a:/app# curl 127.0.0.1:5000
Hello Container world! I have been seen 2 times and my hostname is 25f34556015a.
root@25f34556015a:/app# curl 127.0.0.1:5000
Hello Container world! I have been seen 3 times and my hostname is 25f34556015a.
root@25f34556015a:/app# curl 127.0.0.1:5000
Hello Container world! I have been seen 4 times and my hostname is 25f34556015a.
root@25f34556015a:/app# curl 127.0.0.1:5000
Hello Container world! I have been seen 5 times and my hostname is 25f34556015a.
root@25f34556015a:/app# redis
bash: redis: command not found
root@25f34556015a:/app# exit
exit
[root@zizhen02 flask-redis]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
25f34556015a xiaoming163/flask-redis "python app.py" 4 minutes ago Up 4 minutes 5000/tcp flask-redis
67bd34c15503 redis "docker-entrypoint.s…" 18 minutes ago Up 18 minutes 6379/tcp redis
[root@zizhen02 flask-redis]# curl 127.0.0.1:5000
curl: (7) Failed connect to 127.0.0.1:5000; Connection refused
[root@zizhen02 flask-redis]#
[root@zizhen02 flask-redis]# docker stop redis
redis
[root@zizhen02 flask-redis]# docker start redis
redis
[root@zizhen02 flask-redis]# docker stop flask-redis
flask-redis
[root@zizhen02 flask-redis]# docker rm flask-redis
flask-redis
[root@zizhen02 flask-redis]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
67bd34c15503 redis "docker-entrypoint.s…" 21 minutes ago Up 53 seconds 6379/tcp redis
[root@zizhen02 flask-redis]# docker run -d -p 5000:5000 --link redis --name flask-redis -e REDIS_HOST=redis xiaoming163/flask-redis
e9508debfcf81e0acfbc77165c92a97d162764c65e306da013b6df25f9aa7070
[root@zizhen02 flask-redis]#
[root@zizhen02 flask-redis]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e9508debfcf8 xiaoming163/flask-redis "python app.py" 6 seconds ago Up 4 seconds 0.0.0.0:5000->5000/tcp flask-redis
67bd34c15503 redis "docker-entrypoint.s…" 21 minutes ago Up About a minute 6379/tcp redis
[root@zizhen02 flask-redis]# curl 127.0.0.1:5000
Hello Container world! I have been seen 6 times and my hostname is e9508debfcf8.
[root@zizhen02 flask-redis]# curl 127.0.0.1:5000
Hello Container world! I have been seen 7 times and my hostname is e9508debfcf8.
[root@zizhen02 flask-redis]# curl 127.0.0.1:5000
Hello Container world! I have been seen 8 times and my hostname is e9508debfcf8.
[root@zizhen02 flask-redis]# curl 127.0.0.1:5000
Hello Container world! I have been seen 9 times and my hostname is e9508debfcf8.
[root@zizhen02 flask-redis]# curl 127.0.0.1:5000
Hello Container world! I have been seen 10 times and my hostname is e9508debfcf8.
[root@zizhen02 flask-redis]#
-e 参数的使用
[root@zizhen02 ~]# docker run -d --name test2 -e PENG=xiaoming busybox /bin/sh -c "while true; do sleep 3600; done"
a5de8377b6259dc336168f1ea7e58ee5cc6181089230b5bc33ed7d9d686c2eaf
[root@zizhen02 ~]# docker exec -it test2 /bin/sh
/ # env
HOSTNAME=a5de8377b625
SHLVL=1
HOME=/root
TERM=xterm
PENG=xiaoming
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PWD=/
/ # exit
[root@zizhen02 ~]#
[root@zizhen02 ~]#
[root@zizhen02 ~]# docker run -d --name test3 -e PENG=lili busybox /bin/sh -c "while true; do sleep 3600; done"
c51f1e7cb1d6babcdd13c75f49ca49de8b7256ed7a53497af63737ec6d3313df
[root@zizhen02 ~]# docker exec -it test3 /bin/sh
/ #
/ # env
HOSTNAME=c51f1e7cb1d6
SHLVL=1
HOME=/root
TERM=xterm
PENG=lili
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PWD=/
/ #
36，37 Docke overlay网络和etcd通信