22 lines
688 B
Bash
Executable File
22 lines
688 B
Bash
Executable File
#!/bin/bash
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set -eo pipefail
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host="$(hostname --ip-address || echo '127.0.0.1')"
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user="${POSTGRES_USER:-postgres}"
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export PGPASSWORD="${POSTGRES_PASSWORD:-}"
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args=(
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# force postgres to not use the local unix socket (test "external" connectibility)
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--host "$host"
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--username "$user"
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--quiet --no-align --tuples-only
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)
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if select="$(echo 'SELECT 1' | psql "${args[@]}")" && [ "$select" = '1' ]; then
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exit 0
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fi
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# If the probe returns 2 ("starting") when the container has already moved out of the "starting" state then it is treated as "unhealthy" instead.
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# https://github.com/docker/docker/blob/dcc65376bac8e73bb5930fce4cddc2350bb7baa2/docs/reference/builder.md#healthcheck
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exit 2
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