Các bước sau đây cho phép cài đặt một chứng chỉ Root CA vào máy chủ CentOS 6, 7.

If you want to send or receive messages signed by root authorities and these authorities are not installed on the server, you must add a trusted root certificate manually.

1. Install the ca-certificates package

sudo yum install ca-certificates

2. Enable the dynamic CA configuration feature

sudo update-ca-trust enable

3. Copy root CA

Add it as a new file to /etc/pki/ca-trust/source/anchors/

cp newRootCA.crt /etc/pki/ca-trust/source/anchors/

Use command

update-ca-trust extract

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