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Use endpoint environment variable for managed identities if set

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Some environments in azure don't use the default metadata endpoint, and instead inject an env var that should be used.
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techknowlogick 2025-03-25 19:27:17 -04:00 committed by techknowlogick
parent 40b6db6a27
commit dd29f970a2
1 changed files with 11 additions and 2 deletions
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13
dnsapi/dns_azure.sh
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@ -340,8 +340,17 @@ _azure_getaccess_token() {
if [ "$managedIdentity" = true ]; then
# https://learn.microsoft.com/en-us/entra/identity/managed-identities-azure-resources/how-to-use-vm-token#get-a-token-using-http
export _H1="Metadata: true"
response="$(_get http://169.254.169.254/metadata/identity/oauth2/token\?api-version=2018-02-01\&resource=https://management.azure.com/)"
if [ -n "$IDENTITY_ENDPOINT" ]; then
# Some Azure environments may set IDENTITY_ENDPOINT (formerly MSI_ENDPOINT) to have an alternative metadata endpoint
url="$IDENTITY_ENDPOINT?api-version=2019-08-01&resource=https://management.azure.com/"
headers="X-IDENTITY-HEADER: $IDENTITY_HEADER"
else
url="http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=https://management.azure.com/"
headers="Metadata: true"
fi
export _H1="$headers"
response="$(_get "$url")"
response="$(echo "$response" | _normalizeJson)"
accesstoken=$(echo "$response" | _egrep_o "\"access_token\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
expires_on=$(echo "$response" | _egrep_o "\"expires_on\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")