airship/image-builder
Code Issues Proposed changes

Improve pipline resiliency against failing mirrors

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This change allows fallback to upstream ubuntu mirrors when the apt
mirrors supplied by the cloud provider are not working as expected.

Change-Id: I4391799531e39253f435904c28bda2bebc26f795
This commit is contained in:
Anderson, Craig (ca846m) 2021-11-01 12:48:11 -07:00
parent f891455e19
commit 414873bb86
2 changed files with 29 additions and 0 deletions
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5
image-builder/Makefile
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@ -47,6 +47,8 @@ BOOT_TIMEOUT ?= 300
#it doesn't matter - we're not going to publish it, because it's useless without jsons
KRM_IMAGE_TAG ?= latest
KRM_BASE_IMAGE ?= ${DOCKER_REGISTRY}/${IMAGE_PREFIX}/image-profile-krm:${KRM_IMAGE_TAG}
# Space delimited list of apt mirror FQDN regex matches that will fallback to upstream ubuntu mirror if specified mirror is not working.
APT_MIRROR_PROBLEM_LIST ?= "citycloud"
.PHONY: help build images cut_image package_qcow krm_base_image run clean docker_build tag push
@ -60,6 +62,9 @@ images: build generate_iso package_qcow clean
build:
set -ex
# Use upstream mirrors as a backup in case local apt mirrors are not working.
# Only applies to mirrors on the problem list
sudo -E ./tools/fix_mirrors.sh $(APT_MIRROR_PROBLEM_LIST)
ifneq ($(PROFILE), )
# Apply any user-defined profiles overrides to playbooks
rsync -rc ./../profiles/$(PROFILE)/manifests/ $(WORKDIR)/

24
image-builder/tools/fix_mirrors.sh Executable file
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@ -0,0 +1,24 @@
#!/bin/bash
# This script is to workaround very unreliable mirrors in opendev infra.
# Note that proxy support is not needed, as this problem only exists for
# upstream mirrors not behind any proxies.
for bad_mirror in $@; do
# See if troublesome mirror is configured here
if apt-cache policy | grep "$bad_mirror"; then
echo "Detected troubled apt-cache policy:"
apt-cache policy
# Replace troublesome mirror with working mirror if it's not reachable
# Try installing a small package
apt -y install cpu-checker || (
bad_mirror_uri="$(apt-cache policy | grep archive | head -1 | awk '{print $2}')"
sed -i "s@$bad_mirror_uri@http://us.archive.ubuntu.com/ubuntu@g" /etc/apt/sources.list
sed -i "s@$bad_mirror_uri@http://us.archive.ubuntu.com/ubuntu@g" /etc/apt/sources.list.d/*
echo "Modified apt-cache policy:"
apt-cache policy
echo "Update apt sources list:"
apt -y update
)
break
fi
done