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66 lines
2.4 KiB
Bash
66 lines
2.4 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: 2020-12-11 12:10:23 +0000 (Fri, 11 Dec 2020)
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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 "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090
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. "$srcdir/../lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Sets up a test AWS EKS cluster using eksctl with 3 worker nodes in a 1-4 node AutoScaling group
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Takes about 20 minutes - uses CloudFormation to first create a stack with an EKS cluster management plane, then another stack with a node group,
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and finally configures kubectl config with a context in the form of \$email@\$clustername.\$region.eksctl.io
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Environment variables to configure:
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EKS_CLUSTER - default: 'test'
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EKS_VERSION - default: 1.21 - you should probably set this to the latest supported to avoid having to upgrade later
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AWS_DEFAULT_REGION - default: 'eu-west-2'
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AWS_ZONES - defaults to zones a, b and c in AWS_DEFAULT_REGION - may need to tweak them anyway to work around a lack of capacity in zones. Must match AWS_DEFAULT_REGION
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<cluster_name> <kubernetes_version> <region>]"
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help_usage "$@"
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#min_args 1 "$@"
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"$srcdir/install_eksctl.sh"
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echo
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EKS_CLUSTER="${1:-${EKS_CLUSTER:-test}}"
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EKS_VERSION="${2:-${EKS_VERSION:-1.21}}"
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# set a default here as needed to infer zones if not set
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AWS_DEFAULT_REGION="${3:-${AWS_DEFAULT_REGION:-eu-west2}}"
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# cluster will be called "eksctl-$name-cluster", in this case "eksctl-test-cluster"
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timestamp "Creating AWS EKS cluster via eksctl"
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eksctl create cluster --name "$EKS_CLUSTER" \
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--version "$EKS_VERSION" \
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--region "$AWS_DEFAULT_REGION" \
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--zones "${AWS_ZONES:-${AWS_DEFAULT_REGION}a,${AWS_DEFAULT_REGION}b,${AWS_DEFAULT_REGION}c}" \
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--managed \
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--nodegroup-name standard-workers \
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--node-type t3.micro \
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--nodes 3 \
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--nodes-min 1 \
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--nodes-max 4
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