A3 High: adopt startup-script solution for network delay

Author: tpdownes

examples/machine-learning/a3-highgpu-8g/ml-slurm-a3-1-image.yaml

@@ -50,6 +50,7 @@ deployment_groups:
       docker:
         enabled: true
         world_writable: true
+      enable_gpu_network_wait_online: true
       configure_ssh_host_patterns:
       - 10.0.0.*
       - 10.1.0.*
@@ -116,31 +117,6 @@ deployment_groups:
           * - nofile 1048576
           * - cpu unlimited
           * - rtprio unlimited
-      - type: data
-        destination: /etc/systemd/system/delay-a3.service
-        content: |
-          [Unit]
-          Description=Delay A3 boot until all network interfaces are routable
-          After=network-online.target
-          Wants=network-online.target
-          Before=google-startup-scripts.service
-
-          [Service]
-          ExecCondition=/bin/bash -c '/usr/bin/curl -s -H "Metadata-Flavor: Google" http://metadata.google.internal/computeMetadata/v1/instance/machine-type | grep -q "/a3-highgpu-8g$"'
-          ExecStart=/usr/lib/systemd/systemd-networkd-wait-online -i enp6s0 -i enp12s0 -i enp134s0 -i enp140s0 -o routable --timeout=120
-          ExecStartPost=/bin/sleep 10
-
-          [Install]
-          WantedBy=multi-user.target
-      - type: shell
-        destination: enable_delay_a3.sh
-        content: |
-          #!/bin/bash
-          set -e -o pipefail
-          # workaround b/309016676 (systemd-resolved restarts 4 times causing DNS
-          # resolution failures during google-startup-scripts.service)
-          systemctl daemon-reload
-          systemctl enable delay-a3.service
       - type: data
         destination: /etc/enroot/enroot.conf
         content: |