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94 lines
3.0 KiB
Bash
94 lines
3.0 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2021-03-02 18:58:40 +0000 (Tue, 02 Mar 2021)
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#
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# https://github.com/HariSekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(dirname "${BASH_SOURCE[0]}")"
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# shellcheck disable=SC1090
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC1090
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. "$srcdir/lib/gcp_ci.sh"
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# shellcheck disable=SC1090
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. "$srcdir/lib/kubernetes.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Runs a GCP CI/CD Deploy to GKE Kubernetes
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Environment variables to set in the CI/CD system:
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APP - name of your application
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BUILD - should be automatically set to the Git hash on Jenkins or TeamCity
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ENVIRONMENT - dev/staging/production - corresponding to a local k8s/<environment> directory in the checkout
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CLUSTER_NAME - name of your GKE cluster
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CLOUDSDK_CORE_PROJECT - project ID of your GCP project
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CLOUDSDK_COMPUTE_REGION - GCP region of your GKE cluster
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GCP_SERVICEACCOUNT_KEY - the contents of a credentials.json for a serviceaccount with permissions to run Google Cloud Build
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Primarily written for Jenkins and TeamCity, but should work with minor alterations in other CI/CD tools (see lib/gcp_ci.sh which infers branch and build details)
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args=""
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# BUILD is inferred from the Git commit that triggered the CI/CD system
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# The rest of these should be set by the CI/CD system
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check_env_defined "APP"
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check_env_defined "BUILD"
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check_env_defined "ENVIRONMENT"
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check_env_defined "CLOUDSDK_CORE_PROJECT"
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check_env_defined "CLOUDSDK_COMPUTE_REGION"
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check_env_defined "GKE_CLUSTER"
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check_env_defined "GCP_SERVICEACCOUNT_KEY"
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help_usage "$@"
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#min_args 1 "$@"
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set -x
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kube_config_isolate
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printenv
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# auto-infer CLOUDSDK_CORE_PROJECT if not set in environment
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# requires a uniform predictable project naming convention that maps to Git branches, tune this function in lib/gcp_ci.sh
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# won't override CLOUDSDK_CORE_PROJECT
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#set_gcp_project
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# auto-infer CLOUDSDK_COMPUTE_REGION if not set in environment
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# put logic or default region in lib/gcp_ci.sh function
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# won't override CLOUDSDK_COMPUTE_REGION
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#set_gcp_compute_region europe-west1
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# provide a credentials.json file argument to this function or provide it in a GCP_SERVICEACCOUNT_KEY environment variable via the CI/CD system
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# necessary so you can log in to different projects and maintain IAM permissions isolation for safety
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# do not use the same serviceaccount with permissions across projects, you can cross contaminate and make mistakes, deploy the wrong environment etc.
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gcp_login
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gke_login "$GKE_CLUSTER"
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cd "k8s/$ENVIRONMENT"
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replace_latest_with_build "$BUILD"
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download_kustomize
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kustomize_kubernetes_deploy "${K8_APP:-$APP}" "${K8_NAMESPACE:-$APP}"
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