> For the complete documentation index, see [llms.txt](https://zeroidentidad.gitbook.io/docker-facilito/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zeroidentidad.gitbook.io/docker-facilito/networks/creando_redes.md). # Creando redes * Crear red de imagen [Dockerfile](https://github.com/zeroidentidad/docker-facilito/tree/9aeb3023ae1d4c93c9791a1b59ba9af2adce127a/networks/crear_red/Dockerfile/README.md) editado ``` # editar contenido Dockerfile FROM ubuntu RUN apt-get update && apt-get install net-tools iputils-ping -y # generar imagen usando Dockerfile docker image build -t ubuntu-tools . # salida Sending build context to Docker daemon 2.048kB Step 1/2 : FROM ubuntu ---> 72300a873c2c Step 2/2 : RUN apt-get update && apt-get install net-tools iputils-ping -y ---> Running in a24f7101eaef Get:1 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB] Get:2 http://archive.ubuntu.com/ubuntu bionic InRelease [242 kB] ... Fetched 17.6 MB in 2min 6s (139 kB/s) Reading package lists... Reading package lists... Building dependency tree... Reading state information... The following additional packages will be installed: libcap2 libcap2-bin libidn11 libpam-cap The following NEW packages will be installed: iputils-ping libcap2 libcap2-bin libidn11 libpam-cap net-tools 0 upgraded, 6 newly installed, 0 to remove and 0 not upgraded. Need to get 336 kB of archives. After this operation, 1339 kB of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu bionic/main amd64 libcap2 amd64 1:2.25-1.2 [13.0 kB] ... debconf: delaying package configuration, since apt-utils is not installed Fetched 336 kB in 3s (97.5 kB/s) Selecting previously unselected package libcap2:amd64. (Reading database ... 4046 files and directories currently installed.) Preparing to unpack .../0-libcap2_1%3a2.25-1.2_amd64.deb ... Unpacking libcap2:amd64 (1:2.25-1.2) ... Selecting previously unselected package libidn11:amd64. Preparing to unpack .../1-libidn11_1.33-2.1ubuntu1.2_amd64.deb ... Unpacking libidn11:amd64 (1.33-2.1ubuntu1.2) ... Selecting previously unselected package iputils-ping. Preparing to unpack .../2-iputils-ping_3%3a20161105-1ubuntu3_amd64.deb ... Unpacking iputils-ping (3:20161105-1ubuntu3) ... Selecting previously unselected package libcap2-bin. Preparing to unpack .../3-libcap2-bin_1%3a2.25-1.2_amd64.deb ... Unpacking libcap2-bin (1:2.25-1.2) ... Selecting previously unselected package libpam-cap:amd64. Preparing to unpack .../4-libpam-cap_1%3a2.25-1.2_amd64.deb ... Unpacking libpam-cap:amd64 (1:2.25-1.2) ... Selecting previously unselected package net-tools. Preparing to unpack .../5-net-tools_1.60+git20161116.90da8a0-1ubuntu1_amd64.deb ... Unpacking net-tools (1.60+git20161116.90da8a0-1ubuntu1) ... Setting up libcap2:amd64 (1:2.25-1.2) ... Setting up net-tools (1.60+git20161116.90da8a0-1ubuntu1) ... Setting up libidn11:amd64 (1.33-2.1ubuntu1.2) ... Setting up iputils-ping (3:20161105-1ubuntu3) ... Setting up libpam-cap:amd64 (1:2.25-1.2) ... debconf: unable to initialize frontend: Dialog debconf: (TERM is not set, so the dialog frontend is not usable.) debconf: falling back to frontend: Readline debconf: unable to initialize frontend: Readline Setting up libcap2-bin (1:2.25-1.2) ... Processing triggers for libc-bin (2.27-3ubuntu1) ... Removing intermediate container a24f7101eaef ---> 6c0352412a2f Successfully built 6c0352412a2f Successfully tagged ubuntu-tools:latest # crear nueva red a usar al generar contenedor de la imagen # ver ayuda docker network create --help Usage: docker network create [OPTIONS] NETWORK Create a network Options: --attachable Enable manual container attachment --aux-address map Auxiliary IPv4 or IPv6 addresses used by Network driver (default map[]) --config-from string The network from which copying the configuration --config-only Create a configuration only network -d, --driver string Driver to manage the Network (default "bridge") --gateway strings IPv4 or IPv6 Gateway for the master subnet --ingress Create swarm routing-mesh network --internal Restrict external access to the network --ip-range strings Allocate container ip from a sub-range --ipam-driver string IP Address Management Driver (default "default") --ipam-opt map Set IPAM driver specific options (default map[]) --ipv6 Enable IPv6 networking --label list Set metadata on a network -o, --opt map Set driver specific options (default map[]) --scope string Control the networks scope --subnet strings Subnet in CIDR format that represents a network segment # sentencia de comando para crear red con flag -d (driver de red) docker network create -d bridge br0 8e9c2463ce18fa0e9e653e46ed728f031205d94973d8a428953cd1c606099abe # inspeccionar nueva red docker network inspect br0 [ { "Name": "br0", "Id": "8e9c2463ce18fa0e9e653e46ed728f031205d94973d8a428953cd1c606099abe", "Created": "2020-03-09T20:38:31.624165412-06:00", "Scope": "local", "Driver": "bridge", "EnableIPv6": false, "IPAM": { "Driver": "default", "Options": {}, "Config": [ { "Subnet": "172.22.0.0/16", "Gateway": "172.22.0.1" } ] }, "Internal": false, "Attachable": false, "Ingress": false, "ConfigFrom": { "Network": "" }, "ConfigOnly": false, "Containers": {}, "Options": {}, "Labels": {} } ] ``` * Agregar contenedor a red de imagen previa ``` # crear contenedores nombrados de prueba para usar red creada previamente docker container run -dit --network br0 --name chost1 ubuntu-tools 35a0180c4e62a261a4e166d2d1aa08d2a38af6d8a98591db5d017641c16a99c6 docker container run -dit --network br0 --name chost2 ubuntu-tools 59be481166019b9e50ef54704686a1809aa1135753dfc60cfcc14e5d8db37cfa # listar contenedores en ejecucion docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS NAMES 59be48116601 ubuntu-tools "/bin/bash" About a minute ago Up About a minute chost2 35a0180c4e62 ubuntu-tools "/bin/bash" 2 minutes ago Up 2 minutes chost1 # probar comunicacion red contenedores accediendo a ejecucion de comandos # terminal 1 docker container exec -it chost1 bash root@35a0180c4e62:/ ifconfig eth0: flags=4163 mtu 1500 inet 172.22.0.2 netmask 255.255.0.0 broadcast 172.22.255.255 ether 02:42:ac:16:00:02 txqueuelen 0 (Ethernet) # terminal 2 docker container exec -it chost2 bash root@59be48116601:/ ifconfig eth0: flags=4163 mtu 1500 inet 172.22.0.3 netmask 255.255.0.0 broadcast 172.22.255.255 ether 02:42:ac:16:00:03 txqueuelen 0 (Ethernet) # ping entre ip de contenedores # terminal 1 ping a chost2 root@35a0180c4e62:/ ping 172.22.0.3 PING 172.22.0.3 (172.22.0.3) 56(84) bytes of data. 64 bytes from 172.22.0.3: icmp_seq=1 ttl=64 time=0.213 ms 64 bytes from 172.22.0.3: icmp_seq=2 ttl=64 time=0.161 ms 64 bytes from 172.22.0.3: icmp_seq=3 ttl=64 time=0.161 ms 64 bytes from 172.22.0.3: icmp_seq=4 ttl=64 time=0.163 ms 64 bytes from 172.22.0.3: icmp_seq=5 ttl=64 time=0.160 ms ^C --- 172.22.0.3 ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 4100ms rtt min/avg/max/mdev = 0.160/0.171/0.213/0.025 ms # terminal 2 ping a chost1 root@59be48116601:/ ping 172.22.0.2 PING 172.22.0.2 (172.22.0.2) 56(84) bytes of data. 64 bytes from 172.22.0.2: icmp_seq=1 ttl=64 time=0.317 ms 64 bytes from 172.22.0.2: icmp_seq=2 ttl=64 time=0.162 ms 64 bytes from 172.22.0.2: icmp_seq=3 ttl=64 time=0.161 ms 64 bytes from 172.22.0.2: icmp_seq=4 ttl=64 time=0.161 ms 64 bytes from 172.22.0.2: icmp_seq=5 ttl=64 time=0.161 ms 64 bytes from 172.22.0.2: icmp_seq=6 ttl=64 time=0.161 ms 64 bytes from 172.22.0.2: icmp_seq=7 ttl=64 time=0.161 ms ^C --- 172.22.0.2 ping statistics --- 7 packets transmitted, 7 received, 0% packet loss, time 6131ms rtt min/avg/max/mdev = 0.161/0.183/0.317/0.055 ms # terminal 1 ping a chost2 - igual usando nombre del contenedor root@35a0180c4e62:/ ping chost2 PING chost2 (172.22.0.3) 56(84) bytes of data. 64 bytes from chost2.br0 (172.22.0.3): icmp_seq=1 ttl=64 time=0.178 ms 64 bytes from chost2.br0 (172.22.0.3): icmp_seq=2 ttl=64 time=0.162 ms 64 bytes from chost2.br0 (172.22.0.3): icmp_seq=3 ttl=64 time=0.163 ms ^C --- chost2 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2025ms rtt min/avg/max/mdev = 0.162/0.167/0.178/0.016 ms ``` --- # Agent Instructions This documentation is published with GitBook. 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