mac_address not respected?

[mw88-personal]

I am trying to setup a container in a macvlan with a fixed mac_address. It works manually, but not using podman-compose.

Firstly, I am setting up the network manually:

sudo podman network create -d macvlan -o parent=enp7s0 newnet

Secondly, I make CNI plugins run as a service:

sudo nano /usr/lib/systemd/system/io.podman.dhcp.socket

[Unit]
Description=DHCP Client for CNI

[Socket]
ListenStream=%t/cni/dhcp.sock
SocketMode=0600

[Install]
WantedBy=sockets.target

sudo nano /usr/lib/systemd/system/io.podman.dhcp.service
[Unit]
Description=DHCP Client CNI Service
Requires=io.podman.dhcp.socket
After=io.podman.dhcp.socket

[Service]
Type=simple
ExecStart=/usr/libexec/cni/dhcp daemon
TimeoutStopSec=30
KillMode=process

[Install]
WantedBy=multi-user.target
Also=io.podman.dhcp.socket

sudo systemctl --now enable io.podman.dhcp.socket

I verify that I can run a test container manually and manually assign a mac_address:

$ sudo podman run -it --rm --network newnet--mac-address 12:34:56:78:9a:bc alpine ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
    link/ether 12:34:56:78:9a:bc brd ff:ff:ff:ff:ff:ff

This represents the expected output.

Now I try to do the same using podman-compose:
Create the configuration file:

# docker-compose.yml
version: '3'

services:
  alpinetest:
    hostname: alpinetest
    container_name: alpinetest
    image: alpine
    stdin_open: true
    tty: true
    command: sh
    mac_address: 12:34:56:78:9a:bc
    networks:
      - dhcp
networks:
  dhcp:
    name: newnet
    external: true

Start it:

podman-compose up
['podman', '--version', '']
using podman version: 4.1.1
** excluding:  set()
['podman', 'network', 'exists', 'newnet']
podman create --name=alpinetest --label io.podman.compose.config-hash=123 --label io.podman.compose.project=alpinetest --label io.podman.compose.version=0.0.1 --label com.docker.compose.project=alpinetest --label com.docker.compose.project.working_dir=/mnt/docker/alpinetest --label com.docker.compose.project.config_files=docker-compose.yml --label com.docker.compose.container-number=1 --label com.docker.compose.service=alpinetest --net newnet --network-alias alpinetest --hostname alpinetest -i --tty alpine sh
aea7dbeaedda66387031ea7b1c55cd628d8ef7abadb7d8fea77dff8586ead73c
exit code: 0
podman start -a alpinetest
/ #

However, when I do call inside the container's shell

/ # ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
    link/ether b2:30:1f:86:9e:73 brd ff:ff:ff:ff:ff:ff

I only get a random mac address, each time the container is started. Am I missing something, or is the mac_address property not implemented with podman-compose?

System info:

$ podman-compose --version
['podman', '--version', '']
using podman version: 4.1.1
podman-composer version  1.0.3
podman --version
podman version 4.1.1
exit code: 0

[muayyad-alsadi]

please test

pip3 install https://github.com/containers/podman-compose/archive/devel.tar.gz

[mw88-personal]

I did. Output is not as expected:

$ podman-compose up
podman-compose version: 1.0.4
['podman', '--version', '']
using podman version: 4.1.1
** excluding:  set()
['podman', 'ps', '--filter', 'label=io.podman.compose.project=alpinetest', '-a', '--format', '{{ index .Labels "io.podman.compose.config-hash"}}']
podman pod create --name=pod_alpinetest --infra=false --share=
622eed35d563437df15f2831338ab89ac248e24550eca61209a4125080ce2977
exit code: 0
['podman', 'network', 'exists', 'newnet']
podman create --name=alpinetest --pod=pod_alpinetest --label io.podman.compose.config-hash=86326a224055bcb256782ed694bc8b6225f5c960ea57224fdc9d7ac500874e77 --label io.podman.compose.project=alpinetest --label io.podman.compose.version=1.0.4 --label com.docker.compose.project=alpinetest --label com.docker.compose.project.working_dir=/mnt/docker/alpinetest --label com.docker.compose.project.config_files=docker-compose.yml --label com.docker.compose.container-number=1 --label com.docker.compose.service=alpinetest --mac_address 12:34:56:78:9a:bc --net newnet --network-alias alpinetest --hostname alpinetest -i --tty alpine sh
Error: unknown flag: --mac_address
See 'podman create --help'
exit code: 125
podman start -a alpinetest
Error: no container with name or ID "alpinetest" found: no such container
exit code: 125

Notice the --mac_address flag gets passed, but is unknown. I suspect this is a typo, since the compose specification has the property mac_address, while the docker-compose flag has the name --mac-address (Pay attention to the difference between _ and -).

[muayyad-alsadi]

I've fixed it, please try now.

Pay attention to the difference between _ and -

when I tested it on podman v 3.x it was with _ not -

[mw88-personal]

I just denote my steps, to ensure I am not missing anything:

1. Redo

   $ sudo pip3 install https://github.com/containers/podman-compose/archive/devel.tar.gz
   
       Downloading https://github.com/containers/podman-compose/archive/devel.tar.gz (53 kB)
       |████████████████████████████████| 53 kB 1.2 MB/s
   Requirement already satisfied: python-dotenv in /usr/local/lib/python3.9/dist-packages (from podman-compose==1.0.4) (0.20.0)
   Requirement already satisfied: pyyaml in /usr/lib/python3/dist-packages (from podman-compose==1.0.4) (5.3.1)

2. using the docker-compose.yml from my initial issue, I call sudo podman-compose up
3. This is the output:

   $ podman-compose up
   podman-compose version: 1.0.4
   ['podman', '--version', '']
   using podman version: 4.1.1
   ** excluding:  set()
   ['podman', 'ps', '--filter', 'label=io.podman.compose.project=alpinetest', '-a', '--format', '{{ index .Labels "io.podman.compose.config-hash"}}']
   podman pod create --name=pod_alpinetest --infra=false --share=
   772c56ba4a2498b0057a826ce50d71b813215d3bcbb67568640364c9acbee0ca
   exit code: 0
   ['podman', 'network', 'exists', 'dhcp0-network']
   podman create --name=alpinetest --pod=pod_alpinetest --label io.podman.compose.config-hash=86326a224055bcb256782ed694bc8b6225f5c960ea57224fdc9d7ac500874e77 --label io.podman.compose.project=alpinetest --label io.podman.compose.version=1.0.4 --label com.docker.compose.project=alpinetest --label com.docker.compose.project.working_dir=/mnt/docker/alpinetest --label com.docker.compose.project.config_files=docker-compose.yml --label com.docker.compose.container-number=1 --label com.docker.compose.service=alpinetest --mac_address 12:34:56:78:9a:bd --net dhcp0-network --network-alias alpinetest --hostname alpinetest -i --tty alpine sh
   Error: unknown flag: --mac_address
   See 'podman create --help'
   exit code: 125

As you can see, the resulting podman create is still called with --mac_adress instead of --mac-address. Either my update of podman-compose was not successful, or the fix doesn#t work as intended.

[muayyad-alsadi]

Could be pip cache
pip3 cache remove podman-compose

Or

pip3 cache purge

[mw88-personal]

Now it's working. Thank you.

[muayyad-alsadi]

I need to verify it on podman 3.x!