Edited:Fixed typo in snippet This should work, although I haven't tested it yet     #!/bin/bash #Request access token my_token="$(curl "https://${NIFI_WEB_HTTPS_HOST:-$HOSTNAME}:${NIFI_WEB_HTTPS_PORT:-8443}/nifi-api/access/token?username=${SINGLE_USER_CREDENTIALS_USERNAME:-admin}&password=${SINGLE_USER_CREDENTIALS_PASSWORD:-password}" \ -H 'Content-type:application/x-www-form-urlencoded' \ -X POST)" #Create gitlab registry client curl "https://${NIFI_WEB_HTTPS_HOST:-$HOSTNAME}:${NIFI_WEB_HTTPS_PORT:-8443}/nifi-api/controller/registry-clients" \ -H 'content-type: application/json' \ -H "authorization: bearer ${my_token}" \ --data-raw "{\"revision\":{\"version\":0},\"disconnectedNodeAcknowledged\":false,\"component\":{\"name\":\"${GITLAB_REGISTRY_CLIENT_NAME:-gitlab_reg_client}\",\"type\":\"org.apache.nifi.gitlab.GitLabFlowRegistryClient\",\"description\":\"${GITLAB_REGISTRY_CLIENT_DESCRIPTION:-gitlab_reg_description}\", \"properties\":{\"GitLab API URL\":\"https://${GITLAB_REGISTRY_WEB_HTTPS_HOST:-gitlab.com}:${GITLAB_REGISTRY_WEB_HTTPS_HOST:-443}\",\"Repository Namespace\":\"${GITLAB_REGISTRY_CLIENT_REPOSITORY_NAMESPACE:-default}\",\"Repository Name\":\"${GITLAB_REGISTRY_CLIENT_REPOSITORY_NAME:-default}\",\"Access Token\":\"${GITLAB_REGISTRY_CLIENT_REPOSITORY_ACESS_TOKEN:-insert-your-token}\"}}}"      Best regards Wojtek ... View more