Inspeccionando redes
Ver redes disponibles a usar
# usar comando network para info de ayuda
docker network
# salida
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
# listar redes disponibles
docker network ls
#salida
NETWORK ID NAME DRIVER SCOPE
e8a56097f041 bridge bridge local
2c325b6f3a3c go-react-todo_default bridge local
57891919696c host host local
c0b942849c43 miniapi-node-rn_default bridge local
a35faff8cdf8 none null local
# inspeccionar tipo de red
docker network inspect bridge
#salida
[
{
"Name": "bridge",
"Id": "e8a56097f041f0fe69320f9d119be8a17c3aad81e8c2d20f4df35783e081b5d9",
"Created": "2020-03-08T20:14:08.096383017-06:00",
"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": {},
"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": {}
}
]
# parte de interes props "IPAM"
# probar agregando un contenedor por defecto
# (docker container run -dit --network bridge ubuntu)
docker container run -dit ubuntu
2bba6a2c370dcfa7be6c8e7a2ad37238b40b66eef5ae556dc84d999f72e33df9
# inspeccionar red nuevamente
docker network inspect bridge
#salida en ejecucion nuevo contenedor
[
{
"Name": "bridge",
"Id": "e8a56097f041f0fe69320f9d119be8a17c3aad81e8c2d20f4df35783e081b5d9",
"Created": "2020-03-08T20:14:08.096383017-06:00",
"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": { #new info
"2bba6a2c370dcfa7be6c8e7a2ad37238b40b66eef5ae556dc84d999f72e33df9": {
"Name": "trusting_brahmagupta",
"EndpointID": "f5b7efc97266d5a8da175117cdffbba8466b8166d5a0db60ce2080a77c2787b1",
"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": {}
}
]
# otra forma
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS
2bba6a2c370d ubuntu "/bin/bash" 3 minutes ago Up 3 minutes
docker container inspect 2bba6a2c370d
# salida
[
{
"Id": "2bba6a2c370dcfa7be6c8e7a2ad37238b40b66eef5ae556dc84d999f72e33df9",
"Created": "2020-03-09T18:52:28.237349195Z",
"Path": "/bin/bash",
"Args": [],
"State": {
...
},
...
"HostConfig": {
...
},
"GraphDriver": {
...
},
"Mounts": [],
"Config": {
...
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "9065ed75f1b874b3db78e09cc92ca9dd1a2e3f908f432ef0640cf9474117125f",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {},
"SandboxKey": "/var/run/docker/netns/9065ed75f1b8",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "f5b7efc97266d5a8da175117cdffbba8466b8166d5a0db60ce2080a77c2787b1",
"Gateway": "172.17.0.1",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"MacAddress": "02:42:ac:11:00:02",
"Networks": {
"bridge": { # interest info
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "e8a56097f041f0fe69320f9d119be8a17c3aad81e8c2d20f4df35783e081b5d9",
"EndpointID": "f5b7efc97266d5a8da175117cdffbba8466b8166d5a0db60ce2080a77c2787b1",
"Gateway": "172.17.0.1",
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:ac:11:00:02",
"DriverOpts": null
}
}
}
}
]Desconectar o conectar contenedor de alguna red
# ver ayuda para desconectar
docker network disconnect --help
# listar contenedores para deconectar
docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS
2bba6a2c370d ubuntu "/bin/bash" 25 minutes ago Up 25 minute
# hacer deconexion contenedor activo
docker network disconnect bridge 2bba6a2c370d
# inspeccionar red bridge si ya no esta disponible
docker network inspect bridge
...
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {}, #vacio
"Options": {
...
# hacer reconexion contenedor activo
docker network connect bridge 2bba6a2c370d
# inspeccionar red bridge si esta nuevamente disponible
docker network inspect bridge
...
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"2bba6a2c370dcfa7be6c8e7a2ad37238b40b66eef5ae556dc84d999f72e33df9": {
"Name": "trusting_brahmagupta",
"EndpointID": "23cf3fca2575cfcddf824e41395d7a0e4fbf830855bc149cc91fc25120416402",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"IPv6Address": ""
}
},
"Options": {
...Agregar contenedor a otro tipo de red
# detener los contenedores en ejecucion
docker stop $(docker ps -q)
# salida listado contenedores detenidos
2bba6a2c370d
2cca7a2c380f
# eliminar todos los contenedores en caso necesario
docker container prune
# crear contenedor de prueba en red none
docker run -dit --network none ubuntu
bd983fff11842f70bd58d6f7540f1f2dadaea44c629a53b11dbe00333ad6c374
# crear contenedor de prueba en red host
docker run -dit --network host ubuntu
2895d18f93bb5e14ef3f0231ea5cb03b64d484bec5859983d657ceebf8e5924b
# inspeccionar red none de los contenedores
docker network inspect none
[
{
"Name": "none",
"Id": "a35faff8cdf87b6ee9b698ea972f33fe685e55ee86461c89f8894d5a29530c03",
"Created": "2019-10-28T10:30:21.768635701-06:00",
"Scope": "local",
"Driver": "null",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": []
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"bd983fff11842f70bd58d6f7540f1f2dadaea44c629a53b11dbe00333ad6c374": {
"Name": "modest_nightingale",
"EndpointID": "3b52dc279fa23137cbbe9ea549d984753cfead03484e696f22f286d0233ddb6d",
"MacAddress": "",
"IPv4Address": "",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]
# inspeccionar red host de los contenedores
docker network inspect host
[
{
"Name": "host",
"Id": "57891919696c8f62e118abd3d1650f1eebbefd65f5b6cd660aad5dd95212ce89",
"Created": "2019-10-28T10:30:21.904418256-06:00",
"Scope": "local",
"Driver": "host",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": []
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"2895d18f93bb5e14ef3f0231ea5cb03b64d484bec5859983d657ceebf8e5924b": {
"Name": "angry_khorana",
"EndpointID": "3dea4d58beffa6dfbe1bc0022b2d5a903f0d9a2b7c8cfe7c361a2342b744ee88",
"MacAddress": "",
"IPv4Address": "",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]
# probar tratando de acceder a internet desde el contenedor en la red none
docker container exec -it modest_nightingale bash
root@bd983fff1184:/ apt-get update
# salida
Err:1 http://archive.ubuntu.com/ubuntu bionic InRelease
Temporary failure resolving 'archive.ubuntu.com'
Err:2 http://security.ubuntu.com/ubuntu bionic-security InRelease
Temporary failure resolving 'security.ubuntu.com'
Err:3 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Temporary failure resolving 'archive.ubuntu.com'
Err:4 http://archive.ubuntu.com/ubuntu bionic-backports InRelease
Temporary failure resolving 'archive.ubuntu.com'
Reading package lists... Done
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic/InRelease Temporary failure resolving 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease Temporary failure resolving 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease Temporary failure resolving 'archive.ubuntu.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease Temporary failure resolving 'security.ubuntu.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.
# probar tratando de acceder a internet desde el contenedor en la red host
docker container exec -it angry_khorana bash
root@mihost:/ apt-get update
# salida
Get:1 http://archive.ubuntu.com/ubuntu bionic InRelease [242 kB]
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Get:3 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:4 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [824 kB]
Get:5 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:6 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages [1344 kB]
...
Fetched 17.6 MB in 1min 28s (201 kB/s)
Reading package lists... Done
# instalar net tools para ver config de red
apt-get install net-tools
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
net-tools
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 194 kB of archives.
After this operation, 803 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu bionic/main amd64 net-tools amd64 1.60+git20161116.90da8a0-1ubuntu1 [194 kB]
Fetched 194 kB in 2s (126 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package net-tools.
(Reading database ... 4046 files and directories currently installed.)
Preparing to unpack .../net-tools_1.60+git20161116.90da8a0-1ubuntu1_amd64.deb ...
Unpacking net-tools (1.60+git20161116.90da8a0-1ubuntu1) ...
Setting up net-tools (1.60+git20161116.90da8a0-1ubuntu1) ...
# usar ifconfig para ver detalle de la red host
ifconfig
# salida
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
inet6 fe80::42:2bff:fe41:ea6a prefixlen 64 scopeid 0x20<link>
ether 02:42:2b:41:ea:6a txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4483 bytes 211843 (211.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 283763 bytes 159165894 (159.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 283763 bytes 159165894 (159.1 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
# info equivalente en el sistema host
miusuario@mihost:~$ ifconfig
#salida
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
inet6 fe80::42:2bff:fe41:ea6a prefixlen 64 scopeid 0x20<link>
ether 02:42:2b:41:ea:6a txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4483 bytes 211843 (211.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Bucle local)
RX packets 285435 bytes 159473924 (159.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 285435 bytes 159473924 (159.4 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0Última actualización
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