debian-mirror-gitlab/scripts/review_apps/review-apps.sh
2019-09-04 21:01:54 +05:30

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[[ "$TRACE" ]] && set -x
export TILLER_NAMESPACE="$KUBE_NAMESPACE"
function deployExists() {
local namespace="${1}"
local deploy="${2}"
echoinfo "Checking if ${deploy} exists in the ${namespace} namespace..." true
helm status --tiller-namespace "${namespace}" "${deploy}" >/dev/null 2>&1
local deploy_exists=$?
echoinfo "Deployment status for ${deploy} is ${deploy_exists}"
return $deploy_exists
}
function previousDeployFailed() {
set +e
local deploy="${1}"
echoinfo "Checking for previous deployment of ${deploy}" true
helm status "${deploy}" >/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 "${deploy}" | 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
set -e
return $status
}
function delete() {
if [ -z "$CI_ENVIRONMENT_SLUG" ]; then
echoerr "No release given, aborting the delete!"
return
fi
local name="$CI_ENVIRONMENT_SLUG"
echoinfo "Deleting release '$name'..." true
helm delete --purge "$name"
}
function cleanup() {
if [ -z "$CI_ENVIRONMENT_SLUG" ]; then
echoerr "No release given, aborting the delete!"
return
fi
echoinfo "Cleaning up '$CI_ENVIRONMENT_SLUG'..." true
kubectl -n "$KUBE_NAMESPACE" delete \
ingress,svc,pdb,hpa,deploy,statefulset,job,pod,secret,configmap,pvc,secret,clusterrole,clusterrolebinding,role,rolebinding,sa \
--now --ignore-not-found --include-uninitialized \
-l release="$CI_ENVIRONMENT_SLUG"
}
function get_pod() {
local app_name="${1}"
local status="${2-Running}"
get_pod_cmd="kubectl get pods -n ${KUBE_NAMESPACE} --field-selector=status.phase=${status} -lapp=${app_name},release=${CI_ENVIRONMENT_SLUG} --no-headers -o=custom-columns=NAME:.metadata.name"
echoinfo "Running '${get_pod_cmd}'" true
while true; do
local pod_name
pod_name="$(eval "${get_pod_cmd}")"
[[ "${pod_name}" == "" ]] || break
echoinfo "Waiting till '${app_name}' pod is ready";
sleep 5;
done
echoinfo "The pod name is '${pod_name}'."
echo "${pod_name}"
}
function perform_review_app_deployment() {
check_kube_domain
ensure_namespace
install_tiller
install_external_dns
time deploy
wait_for_review_app_to_be_accessible
add_license
}
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() {
echoinfo "Ensuring the ${KUBE_NAMESPACE} namespace exists..." true
kubectl describe namespace "$KUBE_NAMESPACE" || kubectl create namespace "$KUBE_NAMESPACE"
}
function install_tiller() {
echoinfo "Checking deployment/tiller-deploy status in the ${TILLER_NAMESPACE} namespace..." true
echoinfo "Initiating the Helm client..."
helm init --client-only
helm init \
--upgrade \
--replicas 2
kubectl rollout status -n "$TILLER_NAMESPACE" -w "deployment/tiller-deploy"
if ! helm version --debug; then
echo "Failed to init Tiller."
return 1
fi
}
function install_external_dns() {
local release_name="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 ${domain}..." true
if ! deployExists "${KUBE_NAMESPACE}" "${release_name}" || previousDeployFailed "${release_name}" ; then
echoinfo "Installing external-dns Helm chart"
helm repo update
helm install stable/external-dns \
-n "${release_name}" \
--namespace "${KUBE_NAMESPACE}" \
--set provider="aws" \
--set aws.secretKey="${REVIEW_APPS_AWS_SECRET_KEY}" \
--set aws.accessKey="${REVIEW_APPS_AWS_ACCESS_KEY}" \
--set aws.zoneType="public" \
--set domainFilters[0]="${domain}" \
--set txtOwnerId="${KUBE_NAMESPACE}" \
--set rbac.create="true" \
--set policy="sync"
else
echoinfo "The external-dns Helm chart is already successfully deployed."
fi
}
function create_secret() {
echoinfo "Creating the ${CI_ENVIRONMENT_SLUG}-gitlab-initial-root-password secret in the ${KUBE_NAMESPACE} namespace..." true
kubectl create secret generic -n "$KUBE_NAMESPACE" \
"${CI_ENVIRONMENT_SLUG}-gitlab-initial-root-password" \
--from-literal="password=${REVIEW_APPS_ROOT_PASSWORD}" \
--dry-run -o json | kubectl apply -f -
}
function download_gitlab_chart() {
echoinfo "Downloading the GitLab chart..." true
curl -o gitlab.tar.bz2 "https://gitlab.com/charts/gitlab/-/archive/${GITLAB_HELM_CHART_REF}/gitlab-${GITLAB_HELM_CHART_REF}.tar.bz2"
tar -xjf gitlab.tar.bz2
cd "gitlab-${GITLAB_HELM_CHART_REF}"
echoinfo "Adding the gitlab repo to Helm..."
helm repo add gitlab https://charts.gitlab.io
echoinfo "Building the gitlab chart's dependencies..."
helm dependency build .
}
function deploy() {
local name="$CI_ENVIRONMENT_SLUG"
echoinfo "Deploying ${name}..." true
IMAGE_REPOSITORY="registry.gitlab.com/gitlab-org/build/cng-mirror"
IMAGE_VERSION="${CI_PROJECT_NAME#gitlab-}"
gitlab_migrations_image_repository="${IMAGE_REPOSITORY}/gitlab-rails-${IMAGE_VERSION}"
gitlab_sidekiq_image_repository="${IMAGE_REPOSITORY}/gitlab-sidekiq-${IMAGE_VERSION}"
gitlab_unicorn_image_repository="${IMAGE_REPOSITORY}/gitlab-unicorn-${IMAGE_VERSION}"
gitlab_task_runner_image_repository="${IMAGE_REPOSITORY}/gitlab-task-runner-${IMAGE_VERSION}"
gitlab_gitaly_image_repository="${IMAGE_REPOSITORY}/gitaly"
gitlab_shell_image_repository="${IMAGE_REPOSITORY}/gitlab-shell"
gitlab_workhorse_image_repository="${IMAGE_REPOSITORY}/gitlab-workhorse-${IMAGE_VERSION}"
# Cleanup and previous installs, as FAILED and PENDING_UPGRADE will cause errors with `upgrade`
if [ "$CI_ENVIRONMENT_SLUG" != "production" ] && previousDeployFailed "$CI_ENVIRONMENT_SLUG" ; then
echo "Deployment in bad state, cleaning up $CI_ENVIRONMENT_SLUG"
delete
cleanup
fi
create_secret
download_gitlab_chart
HELM_CMD=$(cat << EOF
helm upgrade --install \
--wait \
--timeout 600 \
--set global.appConfig.enableUsagePing=false \
--set releaseOverride="$CI_ENVIRONMENT_SLUG" \
--set global.imagePullPolicy=Always \
--set global.hosts.hostSuffix="$HOST_SUFFIX" \
--set global.hosts.domain="$REVIEW_APPS_DOMAIN" \
--set certmanager.install=false \
--set prometheus.install=false \
--set global.ingress.configureCertmanager=false \
--set global.ingress.tls.secretName=tls-cert \
--set global.ingress.annotations."external-dns\.alpha\.kubernetes\.io/ttl"="10"
--set nginx-ingress.controller.service.enableHttp=false \
--set nginx-ingress.defaultBackend.resources.requests.memory=7Mi \
--set nginx-ingress.controller.resources.requests.memory=440M \
--set nginx-ingress.controller.replicaCount=2 \
--set gitlab.unicorn.resources.requests.cpu=200m \
--set gitlab.sidekiq.resources.requests.cpu=100m \
--set gitlab.sidekiq.resources.requests.memory=800M \
--set gitlab.gitlab-shell.resources.requests.cpu=100m \
--set redis.resources.requests.cpu=100m \
--set minio.resources.requests.cpu=100m \
--set gitlab.migrations.image.repository="$gitlab_migrations_image_repository" \
--set gitlab.migrations.image.tag="$CI_COMMIT_REF_SLUG" \
--set gitlab.sidekiq.image.repository="$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="$CI_COMMIT_REF_SLUG" \
--set gitlab.task-runner.image.repository="$gitlab_task_runner_image_repository" \
--set gitlab.task-runner.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$GITLAB_SHELL_VERSION" \
--set gitlab.unicorn.workhorse.image="$gitlab_workhorse_image_repository" \
--set gitlab.unicorn.workhorse.tag="$CI_COMMIT_REF_SLUG" \
--set nginx-ingress.controller.config.ssl-ciphers="ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4" \
--namespace="$KUBE_NAMESPACE" \
--version="$CI_PIPELINE_ID-$CI_JOB_ID" \
"$name" \
.
EOF
)
echoinfo "Deploying with:"
echoinfo "${HELM_CMD}"
eval $HELM_CMD || true
}
function wait_for_review_app_to_be_accessible() {
# In case the Review App isn't completely available yet. Keep trying for 5 minutes.
local interval=5
local elapsed_seconds=0
local max_seconds=$((5 * 60))
while true; do
local review_app_http_code
review_app_http_code=$(curl --silent --output /dev/null --max-time 5 --write-out "%{http_code}" "${CI_ENVIRONMENT_URL}/users/sign_in")
if [[ "${review_app_http_code}" -eq "200" ]] || [[ "${elapsed_seconds}" -gt "${max_seconds}" ]]; then
break
fi
printf "."
let "elapsed_seconds+=interval"
sleep ${interval}
done
if [[ "${review_app_http_code}" == "200" ]]; then
echoinfo "The Review App at ${CI_ENVIRONMENT_URL} is ready!"
else
echoerr "The Review App at ${CI_ENVIRONMENT_URL} isn't ready after 5 minutes of polling..."
exit 1
fi
}
function add_license() {
if [ -z "${REVIEW_APPS_EE_LICENSE}" ]; then echo "License not found" && return; fi
task_runner_pod=$(get_pod "task-runner");
if [ -z "${task_runner_pod}" ]; then echo "Task runner pod not found" && return; fi
echoinfo "Installing license..." true
echo "${REVIEW_APPS_EE_LICENSE}" > /tmp/license.gitlab
kubectl -n "$KUBE_NAMESPACE" cp /tmp/license.gitlab "${task_runner_pod}":/tmp/license.gitlab
rm /tmp/license.gitlab
kubectl -n "$KUBE_NAMESPACE" exec -it "${task_runner_pod}" -- /srv/gitlab/bin/rails runner -e production \
'
content = File.read("/tmp/license.gitlab").strip;
FileUtils.rm_f("/tmp/license.gitlab");
unless License.where(data:content).empty?
puts "License already exists";
Kernel.exit 0;
end
unless License.new(data: content).save
puts "Could not add license";
Kernel.exit 0;
end
puts "License added";
'
}