Trusted System Certificates

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A Cloud Foundry Administrator can deploy a set of trusted system certificates. These trusted certificates are available in Linux-based application instances running on the Diego backend. Such instances include buildpack-based apps using the cflinuxfs2 stack and Docker-image-based apps.

If the administrator configures these certificates, they are available inside the instance containers as files with extension .crt in the read-only /etc/cf-system-certificates directory.

For cflinuxfs2-based apps, these certificates are also installed directly in the /etc/ssl/certs directory, and are available automatically to libraries such as openssl that respect that trust store. If the administrator configure these certificates, the location of the certificates is provided in the environment variable CF_SYSTEM_CERT_PATH on the instance container.

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