Tiny Cloud / set default NTP server
* switch to tiny-cloud instead of tiny-ec2-bootstrap * set default NTP server, if configured * add default /etc/network/interfaces * add urlopen() timeout to mitigate ipv6 issues connecting to alpinelinux.org
This commit is contained in:
Jake Buchholz Göktürk
parent
51cc63091f
commit
63a522149d
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@ -1,4 +1,4 @@
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Copyright (c) 2017-2021 Jake Buchholz Göktürk, Michael Crute
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Copyright (c) 2017-2022 Jake Buchholz Göktürk, Michael Crute
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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@ -163,6 +163,7 @@ build {
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"KERNEL_MODULES=${B.value.kernel_modules}",
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"KERNEL_OPTIONS=${B.value.kernel_options}",
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"MOTD=${B.value.motd}",
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"NTP_SERVER=${B.value.ntp_server}",
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"PACKAGES_ADD=${B.value.packages.add}",
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"PACKAGES_DEL=${B.value.packages.del}",
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"PACKAGES_NOSCRIPTS=${B.value.packages.noscripts}",
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@ -10,18 +10,20 @@ class Alpine():
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DEFAULT_RELEASES_URL = 'https://alpinelinux.org/releases.json'
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DEFAULT_CDN_URL = 'https://dl-cdn.alpinelinux.org/alpine'
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DEFAULT_WEB_TIMEOUT = 5
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def __init__(self, releases_url=None, cdn_url=None):
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def __init__(self, releases_url=None, cdn_url=None, web_timeout=None):
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self.now = datetime.utcnow()
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self.release_today = self.now.strftime('%Y%m%d')
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self.eol_tomorrow = (self.now + timedelta(days=1)).strftime('%F')
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self.latest = None
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self.versions = {}
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self.releases_url = releases_url or self.DEFAULT_RELEASES_URL
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self.web_timeout = web_timeout or self.DEFAULT_WEB_TIMEOUT
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self.cdn_url = cdn_url or self.DEFAULT_CDN_URL
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# get all Alpine versions, and their EOL and latest release
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res = urlopen(self.releases_url)
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res = urlopen(self.releases_url, timeout=self.web_timeout)
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r = json.load(res)
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branches = sorted(
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r['release_branches'], reverse=True,
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@ -89,8 +91,7 @@ class Alpine():
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ver = self._ver(ver)
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repo_url = self.repo_url(repo, arch, ver=ver)
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apks_re = re.compile(f'"{apk}-(\\d.*)\\.apk"')
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print(repo_url)
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res = urlopen(repo_url)
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res = urlopen(repo_url, timeout=self.web_timeout)
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for line in map(lambda x: x.decode('utf8'), res):
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if not line.startswith('<a href="'):
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continue
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@ -2,10 +2,16 @@
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name = [tiny]
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WHEN {
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aws {
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packages.tiny-ec2-bootstrap = true
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services.default.tiny-ec2-bootstrap = true
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scripts = [ setup-tiny ]
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script_dirs = [ setup-tiny.d ]
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}
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aws.packages.tiny-cloud-aws = true
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# azure.packages.tiny-cloud-azure = true
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# gcp.packages.tiny-cloud-gcp = true
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# oci.packages.tiny-cloud-oci = true
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}
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services {
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sysinit.tiny-cloud-early = true
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default.tiny-cloud = true
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default.tiny-cloud-final = true
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}
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scripts = [ setup-tiny ]
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@ -1,6 +1,8 @@
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# vim: ts=2 et:
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builder = qemu
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ntp_server = 169.254.169.123
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kernel_modules.ena = true
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initfs_features.ena = true
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@ -175,9 +175,16 @@ install_grub_efi() {
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configure_system() {
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einfo "Configuring System"
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# default network configuration
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install -o root -g root -Dm644 -t "$TARGET/etc/network" "$SETUP/interfaces"
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# configure NTP server, if specified
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[ -n "$NTP_SERVER" ] && \
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sed -e 's/^pool /server /' -e "s/pool.ntp.org/$NTP_SERVER/g" \
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-i "$TARGET/etc/chrony/chrony.conf"
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# setup fstab
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install -o root -g root -Dm644 -t "$TARGET/etc" \
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"$SETUP/fstab"
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install -o root -g root -Dm644 -t "$TARGET/etc" "$SETUP/fstab"
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# if we're using an EFI bootloader, add extra line for EFI partition
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if [ "$FIRMWARE" = uefi ]; then
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cat "$SETUP/fstab.grub-efi" >> "$TARGET/etc/fstab"
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@ -1,67 +1,15 @@
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#!/bin/sh -eu
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# vim: ts=4 et:
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# NOTE: This is lifted almost verbatim from alpine-ec2-ami's setup-ami script
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# While refactoring that, it became apparent that these bits really belonged
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# to the tiny-ec2-bootstrap package, and in order to also provide a
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# "cloud-init" image flavor, we needed separate these parts out.
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#
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# It is our intention to eventually incorporate this in a tiny-cloud-bootstrap
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# package (and per-cloud subpackages).
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[ -z "$DEBUG" ] || [ "$DEBUG" = 0 ] || set -x
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TARGET=/mnt
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SETUP=/tmp/setup-tiny.d
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die() {
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printf '\033[1;7;31m FATAL: %s \033[0m\n' "$@" >&2 # bold reversed red
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exit 1
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}
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einfo() {
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printf '\n\033[1;7;36m> %s <\033[0m\n' "$@" >&2 # bold reversed cyan
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}
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setup_mdev() {
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echo " * Setting up mdev"
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install -o root -g root -Dm755 -t "$TARGET/lib/mdev" \
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"$SETUP/nvme-ebs-links" \
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"$SETUP/eth-eni-hotplug"
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# insert nvme ebs mdev configs just above "# fallback" comment
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sed -n -i \
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-e "/# fallback/r $SETUP/mdev-ec2.conf" \
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-e 1x -e '2,${x;p}' -e '${x;p}' \
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"$TARGET/etc/mdev.conf"
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}
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setup_networking() {
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echo " * Setting up networking"
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# configure standard interfaces
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IFACE_CFG="$TARGET/etc/network/interfaces"
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install -o root -g root -Dm755 -d "$SETUP/interfaces.d" "$IFACE_CFG.d"
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install -o root -g root -Dm644 -t "$IFACE_CFG.d" \
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"$SETUP/interfaces.d/"*
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cat "$IFACE_CFG.d/lo" "$IFACE_CFG.d/eth0" > "$IFACE_CFG"
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install -o root -g root -Dm755 -t "$TARGET/etc/network" \
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"$SETUP/assemble-interfaces"
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# install ucdhcp hooks for EC2 ENI IPv6 and secondary IPv4
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install -o root -g root -Dm755 -t "$TARGET/usr/share/udhcpc" \
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"$SETUP/eth-eni-hook"
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for i in post-bound post-renew; do
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mkdir -p "$TARGET/etc/udhcpc/$i"
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ln -sf /usr/share/udhcpc/eth-eni-hook \
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"$TARGET/etc/udhcpc/$i"
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done
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# install ENI interface setup init script
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install -o root -g root -Dm755 -t "$TARGET/etc/init.d" \
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"$SETUP/eth-eni-setup"
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}
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einfo "Installing up tiny bootstrap components..."
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setup_mdev
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setup_networking
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echo "EC2_USER=$IMAGE_LOGIN" > "$TARGET/etc/conf.d/tiny-ec2-bootstrap"
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einfo "Configuring Tiny Cloud..."
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sed -i.bak -Ee "s/^#?CLOUD_USER=.*/CLOUD_USER=$IMAGE_LOGIN/" \
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"$TARGET"/etc/conf.d/tiny-cloud
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rm "$TARGET"/etc/conf.d/tiny-cloud.bak
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@ -1,42 +0,0 @@
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#!/bin/sh
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# vim: set ts=4 et:
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set -e
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IFACE_CFG=/etc/network/interfaces
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IFACE_DIR="${IFACE_CFG}.d"
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cd "$IFACE_DIR"
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cat > "$IFACE_CFG.new" <<EOT
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# NOTE: /etc/network/assemble-interfaces rewrites this file. Edit files in
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# /etc/network/interfaces.d/ to persist any customizations.
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EOT
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# loopback first
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cat lo >> "$IFACE_CFG.new"
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# existing eths
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for i in /sys/class/net/eth*; do
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IFACE="$(basename "$i")"
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[ ! -f "$IFACE" ] && sed -e "s/%%/$IFACE/g" DEFAULT > "$IFACE"
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cat "$IFACE" >> "$IFACE_CFG.new"
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done
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# all the rest
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for i in "$IFACE_DIR"/*; do
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IFACE="$(basename "$i")"
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case $IFACE in
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DEFAULT|lo|eth*)
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continue
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;;
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*)
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cat "$IFACE" >> "$IFACE_CFG.new"
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;;
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esac
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done
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# install new interfaces config
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cp -a "$IFACE_CFG" "$IFACE_CFG.bak"
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mv "$IFACE_CFG.new" "$IFACE_CFG"
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@ -1,187 +0,0 @@
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#!/bin/sh
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# vim: set ts=4 et:
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# This script should be installed as symlinks in
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# /etc/udhcpc/<hook>/eth-eni-hook
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# <hook> :-
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# post-bound - after udhcpc binds an IP to the interface
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# post-renew - after udhcpc renews the lease for the IP
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#
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# udhcpc provides via ENV...
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# IFACE - eth0, etc.
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# mask - bits in IPv4 subnet mask
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set -e
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HOOK="$(basename "$(dirname "$0")")"
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DEBUG=
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log() {
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[ -z "$DEBUG" ] && [ "$1" = "debug" ] && return
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FACILITY="daemon.$1"
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shift
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logger -s -p "$FACILITY" -t "udhcpc/${HOOK}[$$]" -- "$@"
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}
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if [ -z "$IFACE" ] || [ -z "$mask" ]; then
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log err "Missing 'IFACE' or 'mask' ENV from udhcpc"
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exit 1
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fi
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# route table number
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RTABLE="${IFACE#eth}"
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let RTABLE+=1000
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IMDS=X-aws-ec2-metadata-token
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IMDS_IP=169.254.169.254
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IMDS_MAC="http://$IMDS_IP/latest/meta-data/network/interfaces/macs/$(
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cat "/sys/class/net/$IFACE/address")"
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get_imds_token() {
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IMDS_TOKEN="$(echo -ne \
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"PUT /latest/api/token HTTP/1.0\r\n$IMDS-ttl-seconds: 60\r\n\r\n" |
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nc "$IMDS_IP" 80 | tail -n 1)"
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}
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mac_meta() {
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wget -qO - --header "$IMDS: $IMDS_TOKEN" "$IMDS_MAC/$1" 2>/dev/null \
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|| true # when no ipv6s attached (yet), IMDS returns 404 error
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}
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ip() {
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FAIL_OK=
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if [ "$1" = '+F' ]; then
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FAIL_OK=1
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shift
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fi
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v=-4
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if [ "$1" = '-4' ] || [ "$1" = '-6' ]; then
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v="$1"
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shift
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fi
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OP="$2"
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[ "$OP" = show ] && LEV=debug || LEV=info
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if /sbin/ip "$v" "$@" || [ -n "$FAIL_OK" ]; then
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log "$LEV" "OK: ip $v $*"
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else
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log err "FAIL: ip $v $*"
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fi
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}
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iface_ip4s() {
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ip -4 addr show "$IFACE" secondary |
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sed -E -e '/inet /!d' -e 's/.*inet ([0-9.]+).*/\1/'
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}
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iface_ip6s() {
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ip -6 addr show "$IFACE" scope global |
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sed -E -e '/inet6/!d' -e 's/.*inet6 ([0-9a-f:]+).*/\1/'
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}
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ec2_ip4s() {
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get_imds_token
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# NOTE: metadata for ENI arrives later than hotplug events
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TRIES=60
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while true; do
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IP4="$(mac_meta local-ipv4s)"
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[ -n "$IP4" ] && break
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let TRIES--
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if [ "$TRIES" -eq 0 ]; then
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log err "Unable to get IPv4 addresses for $IFACE after 30s"
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exit 1
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fi
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sleep 0.5
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done
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IP4S="$(echo "$IP4" | tail +2)" # secondary IPs (udhcpc handles primary)
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# non-eth0 interfaces need custom route tables
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#
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if [ "$IFACE" != eth0 ] && [ -n "$IP4S" ] &&
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[ -z "$(ip +F -4 route show table "$RTABLE")" ]; then
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IP4P="$(echo "$IP4" | head -1)" # primary IP
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IP4_CIDR="$(mac_meta subnet-ipv4-cidr-block)"
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IP4_GW="$(echo "$IP4_CIDR" | cut -d/ -f1 |
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awk -F. '{ print $1"."$2"."$3"."$4+1 }')"
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ip -4 route add default via "$IP4_GW" dev "$IFACE" table "$RTABLE"
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ip -4 route add "$IP4_CIDR" dev "$IFACE" proto kernel scope link \
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src "$IP4P" table "$RTABLE"
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fi
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echo "$IP4S"
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}
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ec2_ip6s() {
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get_imds_token
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# NOTE: IPv6 metadata (if any) may arrive later than IPv4 metadata
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TRIES=60
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while true; do
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IP6S="$(mac_meta ipv6s)"
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[ -n "$IP6S" ] && break
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let TRIES--
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if [ "$TRIES" -eq 0 ]; then
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log warn "Unable to get IPv6 addresses for $IFACE after 30s"
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break
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fi
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sleep 0.5
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done
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# non-eth0 interfaces need custom route tables
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#
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# NOTE: busybox iproute2 doesn't do 'route show table' properly for IPv6,
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# so iproute2-minimal package is required!
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#
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if [ "$IFACE" != eth0 ] && [ -n "$IP6S" ] &&
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[ -z "$(ip +F -6 route show table "$RTABLE")" ]; then
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TRIES=20
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while true; do
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GW="$(ip -6 route show dev "$IFACE" default | awk '{ print $3 }')"
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[ -n "$GW" ] && break
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let TRIES--
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if [ "$TRIES" -eq 0 ]; then
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log warn "Unable to get IPv6 gateway RA after 10s"
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break
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fi
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sleep 0.5
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done
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ip -6 route add default via "$GW" dev "$IFACE" table "$RTABLE"
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fi
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echo "$IP6S"
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}
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in_list() {
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echo "$2" | grep -q "^$1$"
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}
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# ip_addr {4|6} {add|del} <ip>
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ip_addr() {
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[ "$1" -eq 6 ] && MASK=128 || MASK="$mask" # IP6s are always /128
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ip -"$1" addr "$2" "$3/$MASK" dev "$IFACE"
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[ "$IFACE" = eth0 ] && return
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# non-eth0 interfaces get rules associating IPs with route tables
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ip -"$1" rule "$2" from "$3" lookup "$RTABLE"
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}
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# sync_ips {4|6} "<ec2-ips>" "<iface-ips>"
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sync_ips() {
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# remove extra IPs
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for i in $3; do
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in_list "$i" "$2" || ip_addr "$1" del "$i"
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done
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# add missing IPs
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for i in $2; do
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in_list "$i" "$3" || ip_addr "$1" add "$i"
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done
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}
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log info "STARTING: $IFACE"
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if [ "$HOOK" != post-bound ] && [ "$HOOK" != post-renew ]; then
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log err "Unhandled udhcpc hook '$HOOK'"
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exit 1
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fi
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sync_ips 4 "$(ec2_ip4s)" "$(iface_ip4s)"
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sync_ips 6 "$(ec2_ip6s)" "$(iface_ip6s)"
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log info "FINISHED: $IFACE"
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@ -1,96 +0,0 @@
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#!/bin/sh
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# vim: set ts=4 et:
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set -e
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PROC="$(basename "$0")[$$]"
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DEBUG=
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log() {
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[ -z "$DEBUG" ] && [ "$1" = "debug" ] && return
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FACILITY="kern.$1"
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shift
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logger -s -p "$FACILITY" -t "$PROC" "$@"
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}
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if [ -z "$MDEV" ]; then
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log err "MDEV env not defined"
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exit 1
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fi
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RTABLE="${MDEV#eth}"
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let RTABLE+=1000
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IFACE_CFG=/etc/network/interfaces
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ip() {
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v=-4
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if [ "$1" = '-4' ] || [ "$1" = '-6' ]; then
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v="$1"
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shift
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fi
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OP="$2"
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[ "$OP" = show ] && LEV=debug || LEV=info
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if /sbin/ip "$v" "$@" || [ -n "$FAIL_OK" ]; then
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log "$LEV" "OK: ip $v $*"
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else
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log err "FAIL: ip $v $*"
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fi
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}
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assemble_interfaces() {
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log info "Rebuilding $IFACE_CFG"
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/etc/network/assemble-interfaces
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}
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interface_up() {
|
||||
log info "Bringing up $MDEV"
|
||||
ifup "$MDEV"
|
||||
}
|
||||
|
||||
cleanup_interface() {
|
||||
log info "Cleaning up $MDEV"
|
||||
|
||||
# kill related udhcpc
|
||||
kill "$(cat "/run/udhcpc.$MDEV.pid")"
|
||||
|
||||
# tidy up /run/ifstate, if it exists
|
||||
[ -f /run/ifstate ] && sed -i -e "/^$MDEV=/d" /run/ifstate
|
||||
|
||||
# remove related rules
|
||||
for V in 4 6; do
|
||||
for P in $(ip -"$V" rule show table "$RTABLE" | cut -d: -f1); do
|
||||
ip -"$V" rule del pref "$P"
|
||||
done
|
||||
done
|
||||
}
|
||||
|
||||
log info "STARTING: $ACTION $MDEV"
|
||||
|
||||
if exec 200>>"$IFACE_CFG"; then
|
||||
if flock 200; then
|
||||
case $ACTION in
|
||||
add|"")
|
||||
assemble_interfaces
|
||||
interface_up
|
||||
;;
|
||||
remove)
|
||||
assemble_interfaces
|
||||
cleanup_interface
|
||||
;;
|
||||
*)
|
||||
log err "Unknown action '$ACTION'"
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
else
|
||||
log err "Unable to flock $IFACE_CFG"
|
||||
exit 1
|
||||
fi
|
||||
else
|
||||
log err "Unable to assign fd 200 to flock $IFACE_CFG"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
log info "FINISHED: $ACTION $MDEV"
|
||||
|
|
@ -1,19 +0,0 @@
|
|||
#!/sbin/openrc-run
|
||||
|
||||
# vim: set ts=4 et:
|
||||
# shellcheck shell=sh
|
||||
|
||||
description="Sets up interfaces for attached Elastic Network Interfaces"
|
||||
|
||||
depend() {
|
||||
before net
|
||||
need sysfs
|
||||
}
|
||||
|
||||
start() {
|
||||
local iface
|
||||
|
||||
ebegin "Setting up interfaces for attached ENIs"
|
||||
/etc/network/assemble-interfaces
|
||||
eend "$?"
|
||||
}
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
auto %%
|
||||
iface %% inet dhcp
|
||||
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
auto eth0
|
||||
iface eth0 inet dhcp
|
||||
|
||||
|
|
@ -1,3 +0,0 @@
|
|||
auto lo
|
||||
iface lo inet loopback
|
||||
|
||||
|
|
@ -1,6 +0,0 @@
|
|||
# additional ENIs
|
||||
eth[1-9] root:root 0644 */lib/mdev/eth-eni-hotplug
|
||||
|
||||
# EBS NVMe links
|
||||
nvme[0-9]+n[0-9]+.* root:root 0660 */lib/mdev/nvme-ebs-links
|
||||
|
||||
|
|
@ -1,47 +0,0 @@
|
|||
#!/bin/sh
|
||||
# vim: set ts=4 et:
|
||||
|
||||
[ -x /usr/sbin/nvme ] || exit
|
||||
|
||||
PROC="$(basename "$0")[$$]"
|
||||
|
||||
log() {
|
||||
FACILITY="kern.$1"
|
||||
shift
|
||||
logger -s -p "$FACILITY" -t "$PROC" "$@"
|
||||
}
|
||||
|
||||
raw_ebs_alias() {
|
||||
/usr/sbin/nvme id-ctrl "/dev/$BASE" -b 2>/dev/null | dd bs=32 skip=96 count=1 2>/dev/null
|
||||
}
|
||||
|
||||
case $ACTION in
|
||||
add|"")
|
||||
BASE=$(echo "$MDEV" | sed -re 's/^(nvme[0-9]+n[0-9]+).*/\1/')
|
||||
PART=$(echo "$MDEV" | sed -re 's/nvme[0-9]+n[0-9]+p?//g')
|
||||
MAXTRY=50
|
||||
TRY=0
|
||||
until [ -n "$EBS" ]; do
|
||||
EBS=$(raw_ebs_alias | sed -nre '/^(\/dev\/)?(s|xv)d[a-z]{1,2} /p' | tr -d ' ')
|
||||
[ -n "$EBS" ] && break
|
||||
TRY=$((TRY + 1))
|
||||
if [ $TRY -eq $MAXTRY ]; then
|
||||
log err "Failed to get EBS volume alias for $MDEV after $MAXTRY attempts ($(raw_ebs_alias))"
|
||||
exit 1
|
||||
fi
|
||||
sleep 0.1
|
||||
done
|
||||
# remove any leading '/dev/', 'sd', or 'xvd', and append partition
|
||||
EBS=${EBS#/dev/}
|
||||
EBS=${EBS#sd}
|
||||
EBS=${EBS#xvd}$PART
|
||||
ln -sf "$MDEV" "sd$EBS" && log notice "Added sd$EBS symlink for $MDEV"
|
||||
ln -sf "$MDEV" "xvd$EBS" && log notice "Added xvd$EBS symlink for $MDEV"
|
||||
;;
|
||||
remove)
|
||||
for TARGET in sd* xvd*
|
||||
do
|
||||
[ "$(readlink "$TARGET" 2>/dev/null)" = "$MDEV" ] && rm -f "$TARGET" && log notice "Removed $TARGET symlink for $MDEV"
|
||||
done
|
||||
;;
|
||||
esac
|
||||
|
|
@ -0,0 +1,7 @@
|
|||
# default alpine-cloud-images network configuration
|
||||
|
||||
auto lo
|
||||
iface lo inet loopback
|
||||
|
||||
auto eth0
|
||||
iface eth0 inet dhcp
|
||||
Loading…
Reference in New Issue