debian-mirror-gitlab/scripts/review_apps/review-apps.sh
2020-01-01 13:55:28 +05:30

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[[ "$TRACE" ]] && set -x
function deploy_exists() {
local namespace="${1}"
local release="${2}"
local deploy_exists
echoinfo "Checking if ${release} exists in the ${namespace} namespace..." true
helm status --tiller-namespace "${namespace}" "${release}" >/dev/null 2>&1
deploy_exists=$?
echoinfo "Deployment status for ${release} is ${deploy_exists}"
return $deploy_exists
}
function previous_deploy_failed() {
local namespace="${1}"
local release="${2}"
echoinfo "Checking for previous deployment of ${release}" true
helm status --tiller-namespace "${namespace}" "${release}" >/dev/null 2>&1
local status=$?
# if `status` is `0`, deployment exists, has a status
if [ $status -eq 0 ]; then
echoinfo "Previous deployment found, checking status..."
deployment_status=$(helm status --tiller-namespace "${namespace}" "${release}" | grep ^STATUS | cut -d' ' -f2)
echoinfo "Previous deployment state: ${deployment_status}"
if [[ "$deployment_status" == "FAILED" || "$deployment_status" == "PENDING_UPGRADE" || "$deployment_status" == "PENDING_INSTALL" ]]; then
status=0;
else
status=1;
fi
else
echoerr "Previous deployment NOT found."
fi
return $status
}
function delete_release() {
local namespace="${KUBE_NAMESPACE}"
local release="${CI_ENVIRONMENT_SLUG}"
if [ -z "${release}" ]; then
echoerr "No release given, aborting the delete!"
return
fi
helm_delete_release "${namespace}" "${release}"
kubectl_cleanup_release "${namespace}" "${release}"
}
function helm_delete_release() {
local namespace="${1}"
local release="${2}"
echoinfo "Deleting Helm release '${release}'..." true
helm delete --tiller-namespace "${namespace}" --purge "${release}"
}
function kubectl_cleanup_release() {
local namespace="${1}"
local release="${2}"
echoinfo "Deleting all K8s resources matching '${release}'..." true
kubectl --namespace "${namespace}" get ingress,svc,pdb,hpa,deploy,statefulset,job,pod,secret,configmap,pvc,secret,clusterrole,clusterrolebinding,role,rolebinding,sa,crd 2>&1 \
| grep "${release}" \
| awk '{print $1}' \
| xargs kubectl --namespace "${namespace}" delete \
|| true
}
function delete_failed_release() {
local namespace="${KUBE_NAMESPACE}"
local release="${CI_ENVIRONMENT_SLUG}"
if [ -z "${release}" ]; then
echoerr "No release given, aborting the delete!"
return
fi
if ! deploy_exists "${namespace}" "${release}"; then
echoinfo "No Review App with ${release} is currently deployed."
else
# Cleanup and previous installs, as FAILED and PENDING_UPGRADE will cause errors with `upgrade`
if previous_deploy_failed "${namespace}" "${release}" ; then
echoinfo "Review App deployment in bad state, cleaning up ${release}"
delete_release
else
echoinfo "Review App deployment in good state"
fi
fi
}
function get_pod() {
local namespace="${KUBE_NAMESPACE}"
local release="${CI_ENVIRONMENT_SLUG}"
local app_name="${1}"
local status="${2-Running}"
get_pod_cmd="kubectl get pods --namespace ${namespace} --field-selector=status.phase=${status} -lapp=${app_name},release=${release} --no-headers -o=custom-columns=NAME:.metadata.name | tail -n 1"
echoinfo "Waiting till '${app_name}' pod is ready" true
echoinfo "Running '${get_pod_cmd}'"
local interval=5
local elapsed_seconds=0
local max_seconds=$((2 * 60))
while true; do
local pod_name
pod_name="$(eval "${get_pod_cmd}")"
[[ "${pod_name}" == "" ]] || break
if [[ "${elapsed_seconds}" -gt "${max_seconds}" ]]; then
echoerr "The pod name couldn't be found after ${elapsed_seconds} seconds, aborting."
break
fi
let "elapsed_seconds+=interval"
sleep ${interval}
done
echoinfo "The pod name is '${pod_name}'."
echo "${pod_name}"
}
function check_kube_domain() {
echoinfo "Checking that Kube domain exists..." true
if [ -z ${REVIEW_APPS_DOMAIN+x} ]; then
echo "In order to deploy or use Review Apps, REVIEW_APPS_DOMAIN variable must be set"
echo "You can do it in Auto DevOps project settings or defining a variable at group or project level"
echo "You can also manually add it in .gitlab-ci.yml"
false
else
true
fi
}
function ensure_namespace() {
local namespace="${KUBE_NAMESPACE}"
echoinfo "Ensuring the ${namespace} namespace exists..." true
kubectl describe namespace "${namespace}" || kubectl create namespace "${namespace}"
}
function install_tiller() {
local namespace="${KUBE_NAMESPACE}"
echoinfo "Checking deployment/tiller-deploy status in the ${namespace} namespace..." true
echoinfo "Initiating the Helm client..."
helm init --client-only
# Set toleration for Tiller to be installed on a specific node pool
helm init \
--tiller-namespace "${namespace}" \
--wait \
--upgrade \
--force-upgrade \
--node-selectors "app=helm" \
--replicas 3 \
--override "spec.template.spec.tolerations[0].key"="dedicated" \
--override "spec.template.spec.tolerations[0].operator"="Equal" \
--override "spec.template.spec.tolerations[0].value"="helm" \
--override "spec.template.spec.tolerations[0].effect"="NoSchedule"
kubectl rollout status --namespace "${namespace}" --watch "deployment/tiller-deploy"
if ! helm version --tiller-namespace "${namespace}" --debug; then
echo "Failed to init Tiller."
return 1
fi
}
function install_external_dns() {
local namespace="${KUBE_NAMESPACE}"
local release="dns-gitlab-review-app"
local domain
domain=$(echo "${REVIEW_APPS_DOMAIN}" | awk -F. '{printf "%s.%s", $(NF-1), $NF}')
echoinfo "Installing external DNS for domain ${domain}..." true
if ! deploy_exists "${namespace}" "${release}" || previous_deploy_failed "${namespace}" "${release}" ; then
echoinfo "Installing external-dns Helm chart"
helm repo update --tiller-namespace "${namespace}"
# Default requested: CPU => 0, memory => 0
# Chart > 2.6.1 has a problem with AWS so we're pinning it for now.
# See https://gitlab.com/gitlab-org/gitlab/issues/37269 and https://github.com/kubernetes-sigs/external-dns/issues/1262
helm install stable/external-dns \
--tiller-namespace "${namespace}" \
--namespace "${namespace}" \
--version '2.6.1' \
--name "${release}" \
--set provider="aws" \
--set aws.credentials.secretKey="${REVIEW_APPS_AWS_SECRET_KEY}" \
--set aws.credentials.accessKey="${REVIEW_APPS_AWS_ACCESS_KEY}" \
--set aws.zoneType="public" \
--set aws.batchChangeSize=400 \
--set domainFilters[0]="${domain}" \
--set txtOwnerId="${namespace}" \
--set rbac.create="true" \
--set policy="sync" \
--set resources.requests.cpu=50m \
--set resources.limits.cpu=100m \
--set resources.requests.memory=100M \
--set resources.limits.memory=200M
else
echoinfo "The external-dns Helm chart is already successfully deployed."
fi
}
function create_application_secret() {
local namespace="${KUBE_NAMESPACE}"
local release="${CI_ENVIRONMENT_SLUG}"
local initial_root_password_shared_secret
local gitlab_license_shared_secret
initial_root_password_shared_secret=$(kubectl get secret --namespace ${namespace} --no-headers -o=custom-columns=NAME:.metadata.name shared-gitlab-initial-root-password | tail -n 1)
if [[ "${initial_root_password_shared_secret}" == "" ]]; then
echoinfo "Creating the 'shared-gitlab-initial-root-password' secret in the ${namespace} namespace..." true
kubectl create secret generic --namespace "${namespace}" \
"shared-gitlab-initial-root-password" \
--from-literal="password=${REVIEW_APPS_ROOT_PASSWORD}" \
--dry-run -o json | kubectl apply -f -
else
echoinfo "The 'shared-gitlab-initial-root-password' secret already exists in the ${namespace} namespace."
fi
if [ -z "${REVIEW_APPS_EE_LICENSE}" ]; then echo "License not found" && return; fi
gitlab_license_shared_secret=$(kubectl get secret --namespace ${namespace} --no-headers -o=custom-columns=NAME:.metadata.name shared-gitlab-license | tail -n 1)
if [[ "${gitlab_license_shared_secret}" == "" ]]; then
echoinfo "Creating the 'shared-gitlab-license' secret in the ${namespace} namespace..." true
echo "${REVIEW_APPS_EE_LICENSE}" > /tmp/license.gitlab
kubectl create secret generic --namespace "${namespace}" \
"shared-gitlab-license" \
--from-file=license=/tmp/license.gitlab \
--dry-run -o json | kubectl apply -f -
else
echoinfo "The 'shared-gitlab-license' secret already exists in the ${namespace} namespace."
fi
}
function download_chart() {
echoinfo "Downloading the GitLab chart..." true
curl --location -o gitlab.tar.bz2 "https://gitlab.com/gitlab-org/charts/gitlab/-/archive/${GITLAB_HELM_CHART_REF}/gitlab-${GITLAB_HELM_CHART_REF}.tar.bz2"
tar -xjf gitlab.tar.bz2
cd "gitlab-${GITLAB_HELM_CHART_REF}"
echoinfo "Adding the gitlab repo to Helm..."
helm repo add gitlab https://charts.gitlab.io
echoinfo "Building the gitlab chart's dependencies..."
helm dependency build .
}
function base_config_changed() {
if [ -z "${CI_MERGE_REQUEST_IID}" ]; then return; fi
curl "${CI_API_V4_URL}/projects/${CI_MERGE_REQUEST_PROJECT_ID}/merge_requests/${CI_MERGE_REQUEST_IID}/changes" | jq '.changes | any(.old_path == "scripts/review_apps/base-config.yaml")'
}
function deploy() {
local namespace="${KUBE_NAMESPACE}"
local release="${CI_ENVIRONMENT_SLUG}"
local edition="${GITLAB_EDITION-ce}"
local base_config_file_ref="master"
if [[ "$(base_config_changed)" == "true" ]]; then base_config_file_ref="${CI_COMMIT_SHA}"; fi
local base_config_file="https://gitlab.com/gitlab-org/gitlab/raw/${base_config_file_ref}/scripts/review_apps/base-config.yaml"
echoinfo "Deploying ${release}..." true
IMAGE_REPOSITORY="registry.gitlab.com/gitlab-org/build/cng-mirror"
gitlab_migrations_image_repository="${IMAGE_REPOSITORY}/gitlab-rails-${edition}"
gitlab_sidekiq_image_repository="${IMAGE_REPOSITORY}/gitlab-sidekiq-${edition}"
gitlab_unicorn_image_repository="${IMAGE_REPOSITORY}/gitlab-unicorn-${edition}"
gitlab_task_runner_image_repository="${IMAGE_REPOSITORY}/gitlab-task-runner-${edition}"
gitlab_gitaly_image_repository="${IMAGE_REPOSITORY}/gitaly"
gitlab_shell_image_repository="${IMAGE_REPOSITORY}/gitlab-shell"
gitlab_workhorse_image_repository="${IMAGE_REPOSITORY}/gitlab-workhorse-${edition}"
create_application_secret
HELM_CMD=$(cat << EOF
helm upgrade \
--tiller-namespace="${namespace}" \
--namespace="${namespace}" \
--install \
--wait \
--timeout 900 \
--set ci.branch="${CI_COMMIT_REF_NAME}" \
--set ci.commit.sha="${CI_COMMIT_SHORT_SHA}" \
--set ci.job.url="${CI_JOB_URL}" \
--set ci.pipeline.url="${CI_PIPELINE_URL}" \
--set releaseOverride="${release}" \
--set global.hosts.hostSuffix="${HOST_SUFFIX}" \
--set global.hosts.domain="${REVIEW_APPS_DOMAIN}" \
--set gitlab.migrations.image.repository="${gitlab_migrations_image_repository}" \
--set gitlab.migrations.image.tag="${CI_COMMIT_REF_SLUG}" \
--set gitlab.gitaly.image.repository="${gitlab_gitaly_image_repository}" \
--set gitlab.gitaly.image.tag="v${GITALY_VERSION}" \
--set gitlab.gitlab-shell.image.repository="${gitlab_shell_image_repository}" \
--set gitlab.gitlab-shell.image.tag="v${GITLAB_SHELL_VERSION}" \
--set gitlab.sidekiq.image.repository="${gitlab_sidekiq_image_repository}" \
--set gitlab.sidekiq.image.tag="${CI_COMMIT_REF_SLUG}" \
--set gitlab.unicorn.image.repository="${gitlab_unicorn_image_repository}" \
--set gitlab.unicorn.image.tag="${CI_COMMIT_REF_SLUG}" \
--set gitlab.unicorn.workhorse.image="${gitlab_workhorse_image_repository}" \
--set gitlab.unicorn.workhorse.tag="${CI_COMMIT_REF_SLUG}" \
--set gitlab.task-runner.image.repository="${gitlab_task_runner_image_repository}" \
--set gitlab.task-runner.image.tag="${CI_COMMIT_REF_SLUG}"
EOF
)
if [ -n "${REVIEW_APPS_EE_LICENSE}" ]; then
HELM_CMD=$(cat << EOF
${HELM_CMD} \
--set global.gitlab.license.secret="shared-gitlab-license"
EOF
)
fi
HELM_CMD=$(cat << EOF
${HELM_CMD} \
--version="${CI_PIPELINE_ID}-${CI_JOB_ID}" \
-f "${base_config_file}" \
"${release}" .
EOF
)
echoinfo "Deploying with:"
echoinfo "${HELM_CMD}"
eval "${HELM_CMD}"
}
function display_deployment_debug() {
local namespace="${KUBE_NAMESPACE}"
local release="${CI_ENVIRONMENT_SLUG}"
# Get all pods for this release
echoinfo "Pods for release ${release}"
kubectl get pods --namespace "${namespace}" -lrelease=${release}
# Get all non-completed jobs
echoinfo "Unsuccessful Jobs for release ${release}"
kubectl get jobs --namespace "${namespace}" -lrelease=${release} --field-selector=status.successful!=1
}