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e0b725be63
Ubuntu 20.04 "focal" comes up to runlevel 5 several seconds before it is able to successfully resolve hosts, causing `prepare-base` to fail while fetching from the apt repositories. Add an additional check to verify that outbound networking is running before returning from `lxc-wait`.
63 lines
1.5 KiB
Bash
Executable File
63 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -e
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usage() {
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echo "usage: lxc-wait -n CONTAINER" >&2
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exit 1
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}
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args="$(getopt -o +n: --long help,name: -- "$@")"
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eval "set -- $args"
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while true; do
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case "$1" in
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--help) usage;;
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-n|--name) CONTAINER_NAME="$2"; shift; shift;;
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--) shift; break;;
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*) usage;;
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esac
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done
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if [ -z "$CONTAINER_NAME" ] || [ "$#" -gt 0 ]; then
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usage
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fi
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if [ "$EUID" -ne 0 ]; then
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echo "error: this script must be run as root" >&2
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exit 1
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fi
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# We poll.
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poll_runlevel() {
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for _ in {1..60}; do
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echo "lxc-wait: $CONTAINER_NAME: polling for boot..." >&2
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runlevel="$(lxc-attach --clear-env -n "$CONTAINER_NAME" -- runlevel 2>/dev/null)" \
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|| { sleep 1; continue; }
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if [ "$runlevel" != "${0%[0-9]}" ]; then
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echo "lxc-wait: $CONTAINER_NAME: booted!" >&2
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poll_network
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fi
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sleep 1
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done
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echo "error: timeout waiting for container to boot" >&2
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exit 1
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}
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poll_network() {
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for _ in {1..60}; do
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echo "lxc-wait: $CONTAINER_NAME: polling for network..." >&2
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# New hosts don't have `host` or `nslookup`
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lxc-attach --clear-env -n "$CONTAINER_NAME" -- \
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ping -q -c 1 archive.ubuntu.com 2>/dev/null >/dev/null \
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|| { sleep 1; continue; }
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echo "lxc-wait: $CONTAINER_NAME: network is up!" >&2
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exit 0
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done
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echo "error: timeout waiting for container to get network" >&2
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exit 1
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}
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poll_runlevel
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