67 lines
1.9 KiB
Plaintext
67 lines
1.9 KiB
Plaintext
# cloud-init-no-net
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# the purpose of this job is
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# * to block running of cloud-init until all network interfaces
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# configured in /etc/network/interfaces are up
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# * timeout if they all do not come up in a reasonable amount of time
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start on mounted MOUNTPOINT=/ and stopped cloud-init-local
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stop on static-network-up
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task
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console output
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script
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set +e # you cannot trap TERM reliably with 'set -e'
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SLEEP_CHILD=""
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static_network_up() {
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local emitted="/run/network/static-network-up-emitted"
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# /run/network/static-network-up-emitted is written by
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# upstart (via /etc/network/if-up.d/upstart). its presense would
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# indicate that static-network-up has already fired.
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[ -e "$emitted" -o -e "/var/$emitted" ]
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}
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msg() {
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local uptime="" idle=""
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if [ -r /proc/uptime ]; then
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read uptime idle < /proc/uptime
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fi
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echo "$UPSTART_JOB${uptime:+[${uptime}]}:" "$1"
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}
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handle_sigterm() {
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# if we received sigterm and static networking is up then it probably
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# came from upstart as a result of 'stop on static-network-up'
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if [ -n "$SLEEP_CHILD" ]; then
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if ! kill $SLEEP_CHILD 2>/dev/null; then
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[ ! -d "/proc/$SLEEP_CHILD" ] ||
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msg "hm.. failed to kill sleep pid $SLEEP_CHILD"
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fi
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fi
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if static_network_up; then
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msg "static networking is now up"
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exit 0
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fi
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msg "recieved SIGTERM, networking not up"
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exit 2
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}
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dowait() {
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[ $# -eq 2 ] || msg "waiting $1 seconds for network device"
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sleep "$1" &
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SLEEP_CHILD=$!
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wait $SLEEP_CHILD
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SLEEP_CHILD=""
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}
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trap handle_sigterm TERM
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# static_network_up already occurred
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static_network_up && exit 0
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dowait 5 silent
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dowait 10
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dowait 115
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msg "gave up waiting for a network device."
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: > /var/lib/cloud/data/no-net
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end script
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