Podman : Podman Network2021/07/29 |
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This is the basic usage to configure Podman Network.
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| [1] | When running containers without specifying network, default [podman] network is assigned. |
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# display network list [root@dlp ~]# podman network ls NAME VERSION PLUGINS podman 0.4.0 bridge,portmap,firewall,tuning # display details of [podman] [root@dlp ~]# podman network inspect podman
[
{
"cniVersion": "0.4.0",
"name": "podman",
"plugins": [
{
"bridge": "cni-podman0",
"hairpinMode": true,
"ipMasq": true,
"ipam": {
"ranges": [
[
{
"gateway": "10.88.0.1",
"subnet": "10.88.0.0/16"
}
]
],
"routes": [
{
"dst": "0.0.0.0/0"
}
],
"type": "host-local"
},
"isGateway": true,
"type": "bridge"
},
{
"capabilities": {
"portMappings": true
},
"type": "portmap"
},
{
"type": "firewall"
},
{
"type": "tuning"
}
]
}
]
# [podman] is assigned as container network by default [root@dlp ~]# podman run rockylinux /usr/sbin/ip route default via 10.88.0.1 dev eth0 10.88.0.0/16 dev eth0 proto kernel scope link src 10.88.0.8 |
| [2] | If you'd like to assign another network, configure like follows. |
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# create network [network01] with [192.168.100.0/24] subnet [root@dlp ~]# podman network create --subnet 192.168.100.0/24 network01 /etc/cni/net.d/network01.conflist podman network ls NAME VERSION PLUGINS podman 0.4.0 bridge,portmap,firewall,tuning network01 0.4.0 bridge,portmap,firewall,tuning # run a container with specifying [network01] [root@dlp ~]# podman run --network network01 rockylinux /usr/sbin/ip route default via 192.168.100.1 dev eth0 192.168.100.0/24 dev eth0 proto kernel scope link src 192.168.100.2 # to attach the network to existing running container, set like follows [root@dlp ~]# podman ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES dc0c6cfb7fbb srv.world/rocky-httpd /bin/bash 15 seconds ago Up 15 seconds ago hungry_gauss[root@dlp ~]# podman exec dc0c6cfb7fbb ip route default via 10.88.0.1 dev eth0 10.88.0.0/16 dev eth0 proto kernel scope link src 10.88.0.10 # attach network to specify an IP address in the subnet [root@dlp ~]# podman network connect network01 dc0c6cfb7fbb
podman exec dc0c6cfb7fbb ip route default via 10.88.0.1 dev eth0 10.88.0.0/16 dev eth0 proto kernel scope link src 10.88.0.10 192.168.100.0/24 dev eth1 proto kernel scope link src 192.168.100.3 # to disconnect the network, set like follows [root@dlp ~]# podman network disconnect network01 dc0c6cfb7fbb [root@dlp ~]# podman exec dc0c6cfb7fbb ip route default via 10.88.0.1 dev eth0 10.88.0.0/16 dev eth0 proto kernel scope link src 10.88.0.10 |
| [3] | To remove podman networks, set like follows. |
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[root@dlp ~]# podman network ls NAME VERSION PLUGINS podman 0.4.0 bridge,portmap,firewall,tuning network01 0.4.0 bridge,portmap,firewall,tuning # remove [network01] [root@dlp ~]# podman network rm network01 Error: "network01" has associated containers with it. Use -f to forcibly delete containers and pods: network is being used # force remove containers with [-f] option [root@dlp ~]# podman network rm -f network01 network01 |
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