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Chapter 22. Migrating From Certificate System 8 to 9

Red Hat Certificate System does not support in-place upgrades from an older major version, such as from 8.2 to 9. For major version upgrades, you must migrate the old instance. Additionally, you can use the same procedure to create a copy of your production environment for testing and debugging purposes.

Important

Before migrating, read the Red Hat Certificate System Release Notes.
A Certificate System migration requires the following steps:
  1. Section 22.1, “Exporting Data from the Previous System”
  2. Section 22.2, “Setting up the CA on the New Host”
  3. Section 22.3, “Importing the Data into the New CA”
  4. Section 22.4, “Reassigning Users to Default Groups”

22.1. Exporting Data from the Previous System
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Before you set up the new Certificate System instance, export the data of the current certificate authority (CA).
On the host that runs the Certificate System instance:
  1. Create a directory for the files to export. For example: 
    # mkdir -m 770 /tmp/cs_bak/
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  2. Export the signing certificate and key:
    • When using a hardware security module (HSM):
      1. List the CA signing certificate nickname. For example: 
        # grep ca.cert.signing.nickname /etc/pki/instance_name/ca/CS.cfg
ca.signing.nickname=<nickname>
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      2. Export the CA certificate: 
        # certutil -L -d /var/lib/pki/instance_name/alias/ \
     -n <nickname> \
     -a > /tmp/cs_bak/ca_signing.crt
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        The key is stored in the HSM and must be available to the new instance.
    • When not using an HSM:
      1. In the configuration file, find the password that protects the CA Network Security Service (NSS) database, and write it to a file: 
        # grep "internal=" /var/lib/pki/instance_name/conf/password.conf | \
     awk -F= '{print $2;}' > /tmp/cs_bak/nss_password.txt
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      2. Create a file with a password that will be used in the next step. For example: 
        # echo Secret123 > /tmp/cs_bak/pkcs12_password.txt
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      3. Export the signing certificate and key: 
        # PKCS12Export -d /var/lib/instance_name/alias/ \
     -p /tmp/cs_bak/nss_password.txt \
     -w /tmp/cs_bak/pkcs12_password.txt \
     -o /tmp/cs_bak/ca.p12
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  3. Export the certificate signing request (CSR): 
    # echo "-----BEGIN NEW CERTIFICATE REQUEST-----" > /tmp/cs_bak/ca_signing.csr

# sed -n "/^ca.signing.certreq=/ s/^[^=]*=// p" /etc/pki/instance_name/ca/CS.cfg \
     >> /tmp/cs_bak/ca_signing.csr

# echo "-----END NEW CERTIFICATE REQUEST-----" >> /tmp/cs_bak/ca_signing.csr
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  4. If the CA is an intermediate CA, extract the root CA or certificate chain from the NSS database: 
    # certutil -L -d /var/lib/pki/instance_name/alias/ -n "root_CA_nickname" \
     -a > /tmp/cs_bak/ca_rootca_signing.crt
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  5. Copy the directory that contains the exported files to the new server. For example: 
    # scp -r /tmp/cs_bak/ new_server:/tmp/
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  6. Find the name of the CA database in the Directory Server: 
    # grep internaldb.database /etc/pki/instance_name/ca/CS.cfg \
			internaldb.database=<CS_database_name>
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    This name is needed to export the database later.
On the host that runs the Directory Server instance:
  1. Create a directory for the files to export, and grant write permissions to the Directory Server user. For example: 
    # mkdir -m 770 /tmp/ds_bak/
# chown root:dirsrv /tmp/ds_bak/
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    Note

    The db2ldif command runs under the Directory Server user (e.g. dirsrv). Therefore the destination directory must be writable by this user.
  2. Export the Directory Server database: 
    # db2ldif -Z<DS_instance_name> -n <CS_database_name> -a /tmp/ds_bak/old_ca.ldif
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    In the example:
    • DS_instance_name is the Directory Server instance name used by the CA. For example: slapd-host_name.
    • CS_database_name is the name of the CA database obtained earlier.
  3. Copy the directory that contains the exported files to the new server. For example: 
    # scp -r /tmp/ds_bak/ new_server:/tmp/
    Copy to Clipboard Toggle word wrap
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