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semaphoreci: caching and more robust creation of container image

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lxc-create in semaphore sometimes fails with

    ERROR: Unable to fetch GPG key from keyserver

Which often happens behind proxies. As the default key server is a load
balancer, retry a few times.

Also, cache the container image between runs, and only recreate it when
it is older than a week.
This commit is contained in:
Martin Pitt 2019-03-03 22:19:16 +01:00 committed by Zbigniew Jędrzejewski-Szmek
parent 4d97f5a09e
commit 0d427d377a
1 changed files with 37 additions and 20 deletions
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57
semaphoreci/setup.sh
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@ -7,6 +7,36 @@ DISTRO=${DISTRO:-debian}
RELEASE=${RELEASE:-buster}
ARCH=${ARCH:-amd64}
CONTAINER=${RELEASE}-${ARCH}
MAX_CACHE_AGE=604800 # one week
CACHE=${SEMAPHORE_CACHE_DIR:=/tmp}/${CONTAINER}.img.tar.gz
create_container() {
# create autopkgtest LXC image; this sometimes fails with "Unable to fetch
# GPG key from keyserver", so retry a few times
for retry in $(seq 5); do
sudo lxc-create -n $CONTAINER -t download -- -d $DISTRO -r $RELEASE -a $ARCH && break
sleep $((retry*retry))
done
# unconfine the container, otherwise some tests fail
echo 'lxc.apparmor.profile = unconfined' | sudo tee -a /var/lib/lxc/$CONTAINER/config
sudo lxc-start -n $CONTAINER
# enable source repositories so that apt-get build-dep works
sudo lxc-attach -n $CONTAINER -- sh -ex <<EOF
sed 's/^deb/deb-src/' /etc/apt/sources.list >> /etc/apt/sources.list.d/sources.list
# wait until online
while [ -z "\$(ip route list 0/0)" ]; do sleep 1; done
apt-get -q update
apt-get -y dist-upgrade
apt-get install -y eatmydata
EOF
sudo lxc-stop -n $CONTAINER
# cache it
sudo tar cpzf "$CACHE" /var/lib/lxc/$CONTAINER
}
# remove semaphore repos, some of them don't work and cause error messages
sudo rm -f /etc/apt/sources.list.d/*
@ -17,25 +47,12 @@ sudo apt-get -q update
sudo apt-get install -y -t xenial-backports lxc
sudo apt-get install -y python3-debian git dpkg-dev fakeroot
AUTOPKGTESTDIR=${SEMAPHORE_CACHE_DIR:-/tmp}/autopkgtest
AUTOPKGTESTDIR=$SEMAPHORE_CACHE_DIR/autopkgtest
[ -d $AUTOPKGTESTDIR ] || git clone --quiet --depth=1 https://salsa.debian.org/ci-team/autopkgtest.git "$AUTOPKGTESTDIR"
# TODO: cache container image (though downloading/building it takes < 1 min)
# create autopkgtest LXC image
sudo lxc-create -n $CONTAINER -t download -- -d $DISTRO -r $RELEASE -a $ARCH
# unconfine the container, otherwise some tests fail
echo 'lxc.apparmor.profile = unconfined' | sudo tee -a /var/lib/lxc/$CONTAINER/config
sudo lxc-start -n $CONTAINER
# enable source repositories so that apt-get build-dep works
sudo lxc-attach -n $CONTAINER -- sh -ex <<EOF
sed 's/^deb/deb-src/' /etc/apt/sources.list >> /etc/apt/sources.list.d/sources.list
# wait until online
while [ -z "\$(ip route list 0/0)" ]; do sleep 1; done
apt-get -q update
apt-get -y dist-upgrade
apt-get install -y eatmydata
EOF
sudo lxc-stop -n $CONTAINER
# use cached container image, unless older than a week
if [ -e "$CACHE" ] && [ $(( $(date +%s) - $(stat -c %Y "$CACHE") )) -le $MAX_CACHE_AGE ]; then
sudo tar -C / -xpzf "$CACHE"
else
create_container
fi