summaryrefslogtreecommitdiff
path: root/scripts/review_apps/review-apps.sh
blob: 6fb83e79f7f906d4935a557698652a39ead0f563 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
[[ "$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 --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 --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 --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="${CI_ENVIRONMENT_SLUG}"
  local release="${CI_ENVIRONMENT_SLUG}"

  if [ -z "${release}" ]; then
    echoerr "No release given, aborting the delete!"
    return
  fi

  delete_k8s_release_namespace
}

function delete_failed_release() {
  local namespace="${CI_ENVIRONMENT_SLUG}"
  local release="${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 namespace ${release}"
      delete_release
    else
      echoinfo "Review App deployment in good state"
    fi
  fi
}

function delete_k8s_release_namespace() {
  local namespace="${CI_ENVIRONMENT_SLUG}"

  kubectl delete namespace "${namespace}" --wait
}

function get_pod() {
  local namespace="${CI_ENVIRONMENT_SLUG}"
  local release="${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 run_task() {
  local namespace="${CI_ENVIRONMENT_SLUG}"
  local ruby_cmd="${1}"
  local task_runner_pod=$(get_pod "task-runner")

  kubectl exec --namespace "${namespace}" "${task_runner_pod}" -- gitlab-rails runner "${ruby_cmd}"
}

function disable_sign_ups() {
  if [ -z ${REVIEW_APPS_ROOT_TOKEN+x} ]; then
    echoerr "In order to protect Review Apps, REVIEW_APPS_ROOT_TOKEN variable must be set"
    false
  else
    true
  fi

  # Create the root token
  local set_token_rb="token = User.find_by_username('root').personal_access_tokens.create(scopes: [:api], name: 'Token to disable sign-ups'); token.set_token('${REVIEW_APPS_ROOT_TOKEN}'); begin; token.save!; rescue(ActiveRecord::RecordNotUnique); end"
  retry "run_task \"${set_token_rb}\""

  # Disable sign-ups
  local disable_signup_rb="Gitlab::CurrentSettings.current_application_settings.update!(signup_enabled: false)"
  if (retry "run_task \"${disable_signup_rb}\""); then
    echoinfo "Sign-ups have been disabled successfully."
  else
    echoerr "Sign-ups are still enabled!"
    false
  fi
}

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="${1}"

  echoinfo "Ensuring the ${namespace} namespace exists..." true

  kubectl describe namespace "${namespace}" || kubectl create namespace "${namespace}"
}

function label_namespace() {
  local namespace="${1}"
  local label="${2}"

  echoinfo "Labeling the ${namespace} namespace with ${label}" true

  kubectl label namespace "${namespace}" "${label}"
}

function install_external_dns() {
  local namespace="${KUBE_NAMESPACE}"
  local release="dns-gitlab-review-app-helm3"
  local domain
  domain=$(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 add bitnami https://charts.bitnami.com/bitnami
    helm repo update

    # Default requested: CPU => 0, memory => 0
    helm install "${release}" bitnami/external-dns \
      --namespace "${namespace}" \
      --version '2.13.3' \
      --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
}

# This script is used to install cert-manager in the cluster
# The installation steps are documented in
# https://gitlab.com/gitlab-org/quality/team-tasks/snippets/1990286
function install_certmanager() {
  local namespace="${KUBE_NAMESPACE}"
  local release="cert-manager-review-app-helm3"

  echoinfo "Installing cert-manager..." true

  if ! deploy_exists "${namespace}" "${release}" || previous_deploy_failed "${namespace}" "${release}" ; then
    kubectl apply \
    -f https://raw.githubusercontent.com/jetstack/cert-manager/release-0.10/deploy/manifests/00-crds.yaml

    echoinfo "Installing cert-manager Helm chart"
    helm repo add jetstack https://charts.jetstack.io
    helm repo update

    helm install "${release}" jetstack/cert-manager \
      --namespace "${namespace}" \
      --version v0.15.1 \
      --set installCRDS=true
  else
    echoinfo "The cert-manager Helm chart is already successfully deployed."
  fi
}

function create_application_secret() {
  local namespace="${CI_ENVIRONMENT_SLUG}"
  local release="${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_FILE}" ]; 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 ${namespace} namespace..." true
    kubectl create secret generic --namespace "${namespace}" \
      "shared-gitlab-license" \
      --from-file=license="${REVIEW_APPS_EE_LICENSE_FILE}" \
      --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

  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 "gitlab-${GITLAB_HELM_CHART_REF}"
}

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 parse_gitaly_image_tag() {
  local gitaly_version="${GITALY_VERSION}"

  # prepend semver version with `v`
  if [[ $gitaly_version =~  ^[0-9]+\.[0-9]+\.[0-9]+(-rc[0-9]+)?(-ee)?$ ]]; then
    echo "v${gitaly_version}"
  else
    echo "${gitaly_version}"
  fi
}

function deploy() {
  local namespace="${CI_ENVIRONMENT_SLUG}"
  local release="${CI_ENVIRONMENT_SLUG}"
  local base_config_file_ref="${CI_DEFAULT_BRANCH}"
  if [[ "$(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} to ${CI_ENVIRONMENT_URL} ..." true

  IMAGE_REPOSITORY="registry.gitlab.com/gitlab-org/build/cng-mirror"
  gitlab_migrations_image_repository="${IMAGE_REPOSITORY}/gitlab-rails-ee"
  gitlab_sidekiq_image_repository="${IMAGE_REPOSITORY}/gitlab-sidekiq-ee"
  gitlab_webservice_image_repository="${IMAGE_REPOSITORY}/gitlab-webservice-ee"
  gitlab_task_runner_image_repository="${IMAGE_REPOSITORY}/gitlab-task-runner-ee"
  gitlab_gitaly_image_repository="${IMAGE_REPOSITORY}/gitaly"
  gitaly_image_tag=$(parse_gitaly_image_tag)
  gitlab_shell_image_repository="${IMAGE_REPOSITORY}/gitlab-shell"
  gitlab_workhorse_image_repository="${IMAGE_REPOSITORY}/gitlab-workhorse-ee"

  ensure_namespace "${namespace}"
  label_namespace "${namespace}" "tls=review-apps-tls" # label namespace for kubed to sync tls

  create_application_secret

HELM_CMD=$(cat << EOF
  helm upgrade \
    --namespace="${namespace}" \
    --create-namespace \
    --install \
    --wait \
    --timeout "${HELM_INSTALL_TIMEOUT:-20m}" \
    --set ci.branch="${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="${gitlab_gitaly_image_repository}" \
    --set gitlab.gitaly.image.tag="${gitaly_image_tag}" \
    --set gitlab.gitlab-shell.image.repository="${gitlab_shell_image_repository}" \
    --set gitlab.gitlab-shell.image.tag="v${GITLAB_SHELL_VERSION}" \
    --set gitlab.sidekiq.annotations.commit="${CI_COMMIT_SHORT_SHA}" \
    --set gitlab.sidekiq.image.repository="${gitlab_sidekiq_image_repository}" \
    --set gitlab.sidekiq.image.tag="${CI_COMMIT_REF_SLUG}" \
    --set gitlab.webservice.annotations.commit="${CI_COMMIT_SHORT_SHA}" \
    --set gitlab.webservice.image.repository="${gitlab_webservice_image_repository}" \
    --set gitlab.webservice.image.tag="${CI_COMMIT_REF_SLUG}" \
    --set gitlab.webservice.workhorse.image="${gitlab_workhorse_image_repository}" \
    --set gitlab.webservice.workhorse.tag="${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 "${REVIEW_APPS_EE_LICENSE_FILE}" ]; then
HELM_CMD=$(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}" \
  -v "${HELM_LOG_VERBOSITY:-1}" \
  "${release}" "gitlab-${GITLAB_HELM_CHART_REF}"
EOF
)

  echoinfo "Deploying with:"
  echoinfo "${HELM_CMD}"

  eval "${HELM_CMD}"
}

function verify_deploy() {
  echoinfo "Verifying deployment at ${CI_ENVIRONMENT_URL}"

  if retry "test_url \"${CI_ENVIRONMENT_URL}\" curl_output.txt"; then
    echoinfo "Review app is deployed to ${CI_ENVIRONMENT_URL}"
    return 0
  else
    echoerr "Review app is not available at ${CI_ENVIRONMENT_URL}. See curl_output.txt artifact for detail."
    return 1
  fi
}

function display_deployment_debug() {
  local namespace="${CI_ENVIRONMENT_SLUG}"
  local release="${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
}