atm-present.yml

--- # TBD: idempotency with creates, etc
- hosts: Acme1ACI2
  vars:
    ints: '{{ tst.ints[1:] }}' # or directly on tst.ints with "when: item.device != 'eth0'" # Do NOT touch management eth0!
    func:
      epg0: client
      legacy0: server
    port: 5201
  tasks:
    - name: Force kill all containers #, but leaving volumes if any
      shell: docker container rm -f $(docker container ls --all -q)
      ignore_errors: true
    - command: ip -br l
      register: reg
    - set_fact:
        devs: '{{ reg.stdout_lines | map("regex_replace", "^(\w+)\s+(?:UP|DOWN|UNKNOWN)\s+([0-9A-Fa-f:]{17})\b.*$", "\1 \2") | list }}'
    - name: Prep interfaces # set down and name with MAC to dev mapping
      shell: | # cannot loop over block of commands, so shell
        ip l set {{ dev.0 }} down
        # Does not work for interface in down state: ip l set {{ dev.0 }} mtu 9000
        ip l set {{ dev.0 }} name {{ item.device }} up # w\ 'up' UNKNOWN state may happens in docker container
      args:
        creates: /sys/class/net/{{ item.device }} # TBD: ensure that an interface is in down state
      vars:
        dev: '{{ (devs | map("regex_search", "^.*\b" ~ item.mac ~ "$") | reject("none") | first).split() }}'
      with_list: '{{ ints }}'
    - name: Start containers
      #docker_container:
      #module fails due to Py 3.6 to 2.7 (target) source (/usr/lib/python2.7/site-packages/docker/api/container.py, line 157, in create_host_config) discepancy: "... create_host_config() got an unexpected keyword argument 'init'".
      vars:
        name: iperf-{{ func[ item ] }}
        auto_remove: yes
        image: docker.io/networkstatic/iperf3:latest
        entrypoint: /bin/bash
        interactive : yes
        tty: yes
        network_mode: none
        purge_networks: yes
        volumes: /var/tmp:/mnt/host
        restart: yes # or recreate if not enough (w/ or w\ force_kill and/or keep_volumes)
        restart_policy: always # using default zero restart_retries
      command: docker run --name {{ name }} --rm --network {{ network_mode }} -v {{ volumes }} --entrypoint {{ entrypoint }} -itd {{ image }}
      register: reg_conts # for docker_container dict if module is used
      with_list: '{{ ints | map(attribute="device") | list }}'
    - name: Inject networks
      command: pipework --direct-phys {{ item.device }} iperf-{{ func[ item.device ] }} {{ item.address }}/{{ item.netmask | ipaddr('prefix') }}@{{ item.gateway }} # empty routes if @... missed
      register: reg_nets
      with_list: '{{ ints }}'
    - name: Start IPerf server # might be merged with this container creation (unsure, depends on interface visibility)
      command: docker exec iperf-server iperf3 --{{ func[ "legacy0" ] }} -p {{ port }} -u -D
      async: 3600 # On 0 (zero) playbooks seems to hangs, but next task looks started (!?!)
      poll: 0
    - name: Run IPerf test 1
      command: docker exec iperf-client iperf3 --{{ func[ "epg0" ] }} {{ (ints | selectattr("device", "eq", "legacy0") | first).address }} -p {{ port }} -b 80M -t 30 -i 10 -u #-P 10 -N