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gce/upgrade.sh: Prompt if etcd version is unspecified. 

We shouldn't upgrade etcd without first warning the user that some etcd
version transitions can't be undone. We don't know what version the user
currently has, so we require either an explicit version and image, or an
interactive acknowledgement of this caveat.

This is modeled after the STORAGE_MEDIA_TYPE prompt just above.
pull/6/head
Anthony Yeh 2017-12-12 17:30:27 -08:00
parent d052476c30
commit bbcf59bde0
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2 changed files with 37 additions and 0 deletions
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33
cluster/gce/upgrade.sh
View File

@ -537,6 +537,39 @@ if [[ -z "${STORAGE_MEDIA_TYPE:-}" ]] && [[ "${STORAGE_BACKEND:-}" != "etcd2" ]]
fi
fi
# Prompt if etcd image/version is unspecified when doing master upgrade.
# In e2e tests, we use TEST_ALLOW_IMPLICIT_ETCD_UPGRADE=true to skip this
# prompt, simulating the behavior when the user confirms interactively.
# All other automated use of this script should explicitly specify a version.
if [[ "${master_upgrade}" == "true" ]]; then
if [[ -z "${ETCD_IMAGE:-}" && -z "${TEST_ETCD_IMAGE:-}" ]] || [[ -z "${ETCD_VERSION:-}" && -z "${TEST_ETCD_VERSION:-}" ]]; then
echo
echo "***WARNING***"
echo "Upgrading Kubernetes with this script might result in an upgrade to a new etcd version."
echo "Some etcd version upgrades, such as 3.0.x to 3.1.x, DO NOT offer a downgrade path."
echo "To pin the etcd version to your current one (e.g. v3.0.17), set the following variables"
echo "before running this script:"
echo
echo "# example: pin to etcd v3.0.17"
echo "export ETCD_IMAGE=3.0.17"
echo "export ETCD_VERSION=3.0.17"
echo
echo "Alternatively, if you choose to allow an etcd upgrade that doesn't support downgrade,"
echo "you might still be able to downgrade Kubernetes by pinning to the newer etcd version."
echo "In all cases, it is strongly recommended to have an etcd backup before upgrading."
echo
if [ -t 0 ] && [ -t 1 ]; then
read -p "Continue with default etcd version, which might upgrade etcd? [y/N] " confirm
if [[ "${confirm}" != "y" ]]; then
exit 1
fi
elif [[ "${TEST_ALLOW_IMPLICIT_ETCD_UPGRADE:-}" != "true" ]]; then
echo "ETCD_IMAGE and ETCD_VERSION must be specified when run non-interactively." >&2
exit 1
fi
fi
fi
print-node-version-info "Pre-Upgrade"
if [[ "${local_binaries}" == "false" ]]; then

4
test/e2e/framework/nodes_util.go
View File

@ -78,6 +78,10 @@ func masterUpgradeGCE(rawV string, enableKubeProxyDaemonSet bool) error {
"TEST_ETCD_VERSION="+TestContext.EtcdUpgradeVersion,
"STORAGE_BACKEND="+TestContext.EtcdUpgradeStorage,
"TEST_ETCD_IMAGE=3.1.10")
} else {
// In e2e tests, we skip the confirmation prompt about
// implicit etcd upgrades to simulate the user entering "y".
env = append(env, "TEST_ALLOW_IMPLICIT_ETCD_UPGRADE=true")
}
v := "v" + rawV