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91b34ec49bFor major version upgrades, we change the boot image to allow running
multiple versions of PG simultaneously. For this, we only **download**
the relevant packages for all supported PG versions at image generation
time. Additionally, the image generation step places the required
package list as text files at
/usr/local/share/postgresql/packages/#{version}.txt,common.txt.
While initializing a new server, we install the
required packages by referring to the package list. With the download
already completed at image generation time, this step should be fairly
quick to allow for quick startup and upgrades. For rolling out this
change , we need to ensure all older servers have these files in place.
33 lines
957 B
Ruby
33 lines
957 B
Ruby
# frozen_string_literal: true
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require_relative "../../common/lib/util"
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require "logger"
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class PostgresSetup
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def initialize(version)
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@version = version
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end
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def setup_packages
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r "sudo apt-get -y install $(cat /usr/local/share/postgresql/packages/#{@version}.txt | tr \"\n\" \"\")"
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r "sudo apt-get -y install $(cat /usr/local/share/postgresql/packages/common.txt | tr \"\n\" \"\")"
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end
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def setup_data_directory
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r "chown postgres /dat"
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# Below commands are required for idempotency
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r "rm -rf /dat/#{@version}"
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r "rm -rf /etc/postgresql/#{@version}"
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r "echo \"data_directory = '/dat/#{@version}/data'\" | sudo tee /etc/postgresql-common/createcluster.d/data-dir.conf"
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end
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def create_cluster
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r "pg_createcluster #{@version} main --port=5432 --start --locale=C.UTF8"
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end
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def teardown
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r "sudo apt-get -y remove $(cat /usr/local/share/postgresql/packages/#{@version}.txt | tr \"\n\" \"\")"
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end
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end
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