22 lines
925 B
Nix
22 lines
925 B
Nix
{ targetRoot, wgetExtraOptions }:
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# OpenStack's metadata service aims to be EC2-compatible. Where
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# possible, try to keep the set of fetched metadata in sync with
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# ./ec2-metadata-fetcher.nix .
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''
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metaDir=${targetRoot}etc/ec2-metadata
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mkdir -m 0755 -p "$metaDir"
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rm -f "$metaDir/*"
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echo "getting instance metadata..."
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wget_imds() {
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wget ${wgetExtraOptions} "$@"
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}
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wget_imds -O "$metaDir/ami-manifest-path" http://169.254.169.254/1.0/meta-data/ami-manifest-path || true
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# When no user-data is provided, the OpenStack metadata server doesn't expose the user-data route.
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(umask 077 && wget_imds -O "$metaDir/user-data" http://169.254.169.254/1.0/user-data || rm -f "$metaDir/user-data")
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wget_imds -O "$metaDir/hostname" http://169.254.169.254/1.0/meta-data/hostname || true
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wget_imds -O "$metaDir/public-keys-0-openssh-key" http://169.254.169.254/1.0/meta-data/public-keys/0/openssh-key || true
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''
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