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9.2. CS.cfg Files

The runtime properties of a Certificate System subsystem are governed by a set of configuration parameters. These parameters are stored in a file that is read by the server during startup, CS.cfg.
The CS.cfg, an ASCII file, is created and populated with the appropriate configuration parameters when a subsystem is first installed. The way the instance functions are modified is by making changes through the subsystem console, which is the recommended method. The changes made in the administrative console are reflected in the configuration file.
It is also possible to edit the CS.cfg configuration file directly, and in some cases this is the easiest way to manage the subsystem.

9.2.1. Locating the CS.cfg File
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Each instance of a Certificate System subsystem has its own configuration file, CS.cfg. The contents of the file for each subsystem instance is different depending on the way the subsystem was configured, additional settings and configuration (like adding new profiles or enabling self-tests), and the type of subsystem.
The CS.cfg file is located in the configuration directory for the instance. 
/var/lib/pki/instance_name/conf
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For example: 
/var/lib/pki/pki-tomcat/ca/conf
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9.2.2. Editing the Configuration File
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Warning

Do not edit the configuration file directly without being familiar with the configuration parameters or without being sure that the changes are acceptable to the server. The Certificate System fails to start if the configuration file is modified incorrectly. Incorrect configuration can also result in data loss.
To modify the CS.cfg file:
  1. Stop the subsystem instance. 
    systemctl stop pki-tomcatd@instance_name.service
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    OR 
    systemctl stop pki-tomcatd-nuxwdog@instance_name.service (if using nuxwdog watchdog)
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    The configuration file is stored in the cache when the instance is started. Any changes made to the instance through the Console are changed in the cached version of the file. When the server is stopped or restarted, the configuration file stored in the cache is written to disk. Stop the server before editing the configuration file or the changes will be overwritten by the cached version when the server is stopped.
  2. Open the /var/lib/pki/instance_name/conf directory.
  3. Open the CS.cfg file in a text editor.
  4. Edit the parameters in the file, and save the changes.
  5. Start the subsystem instance. 
    systemctl start pki-tomcatd@instance_name.service
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    OR 
    systemctl start pki-tomcatd-nuxwdog@instance_name.service (if using nuxwdog watchdog)
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9.2.3. Overview of the CS.cfg Configuration File
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Each subsystem instances has its own main configuration file, CS.cfg, which contains all of the settings for the instance, such as plug-ins and Java classes for configuration. The parameters and specific settings are different depending on the type of subsystem, but, in a general sense, the CS.cfg file defines these parts of the subsystem instance:
  • Basic subsystem instance information, like its name, port assignments, instance directory, and hostname
  • Logging
  • Plug-ins and methods to authenticate to the instance's user directory (authorization)
  • The security domain to which the instance belongs
  • Subsystem certificates
  • Other subsystems used by the subsystem instance
  • Database types and instances used by the subsystem
  • Settings for PKI-related tasks, like the key profiles in the TKS, the certificate profiles in the CA, and the required agents for key recovery in the KRA
Many of the configuration parameters (aside from the ones for PKI tasks) are very much the same between the CA, OCSP, KRA, and TKS because they all use a Java-based console, so configuration settings which can be managed in the console have similar parameters.
The CS.cfg file a basic parameter=value format. 
#comment
parameter=value
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In the CS.cfg file, many of the parameter blocks have descriptive comments, commented out with a pound (#) character. Comments, blank lines, unknown parameters, or misspelled parameters are ignored by the server.

Note

A bug in the TPS prevents it from ignoring lines which are commented out in the CS.cfg file. Rather than commenting out lines in the TPS CS.cfg file, simply delete those lines.
Parameters that configure the same area of the instance tend to be grouped together into the same block.

Example 9.1. Logging Settings in the CS.cfg File

log.instance.System._000=##
log.instance.System._001=## System Logging
log.instance.System._002=##
log.instance.System.bufferSize=512
log.instance.System.enable=true
log.instance.System.expirationTime=0
log.instance.System.fileName=/var/lib/pki/pki-tomcat/ca/logs/system
log.instance.System.flushInterval=5
log.instance.System.level=3
log.instance.System.maxFileSize=2000
log.instance.System.pluginName=file
log.instance.System.rolloverInterval=2592000
log.instance.System.type=system
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Some areas of functionality are implemented through plug-ins, such as self-tests, jobs, and authorization to access the subsystem. For those parameters, the plug-in instance has a unique identifier (since there can be multiple instances of even the same plug-in called for a subsystem), the implementation plug-in name, and the Java class.

Example 9.2. Subsystem Authorization Settings

authz.impl._000=##
authz.impl._001=## authorization manager implementations
authz.impl._002=##
authz.impl.BasicAclAuthz.class=com.netscape.cms.authorization.BasicAclAuthz
authz.instance.BasicAclAuthz.pluginName=BasicAclAuthz
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Note

The values for configuration parameters must be properly formatted, so they must obey two rules:
  • The values that need to be localized must be in UTF8 characters.
  • The CS.cfg file supports forward slashes (/) in parameter values. If a back slash (\) is required in a value, it must be escaped with a back slash, meaning that two back slashes in a row must be used.
The following sections are snapshots of CS.cfg file settings and parameters. These are not exhaustive references or examples of CS.cfg file parameters. Also, the parameters available and used in each subsystem configuration file is very different, although there are similarities.

9.2.3.1. Basic Instance Parameters for the CA: pkispawn file ca.cfg
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Basic settings are specific to the instance itself, without directly relating to the functionality or behavior of the subsystem. This includes settings for the instance name, root directory, the user ID for the process, and port numbers. Many of the settings assigned when the instance is first installed or configured are prefaced with pkispawn.

Example 9.3. Basic Instance Parameters for the CA

[DEFAULT]
pki_admin_password=Secret.123
pki_client_pkcs12_password=Secret.123
pki_ds_password=Secret.123
# Optionally keep client databases
pki_client_database_purge=False
# Separated CA instance name and ports
pki_instance_name=pki-ca
pki_http_port=18080
pki_https_port=18443
# This Separated CA instance will be its own security domain
pki_security_domain_https_port=18443

[Tomcat]
# Separated CA Tomcat ports
pki_ajp_port=18009
pki_tomcat_server_port=18005
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Important

While information like the port settings is included in the CS.cfg file, it is not set in the CS.cfg. The server configuration is set in the server.xml file.
The ports in CS.cfg and server.xml must match for a working RHCS instance.

9.2.3.2. Logging Settings
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There are several different types of logs that can be configured, depending on the type of subsystem. Each type of log has its own configuration entry in the CS.cfg file.
For example, the CA has this entry for transaction logs, which allows log rotation, buffered logging, and log levels, among other settings: 
log.instance.Transactions._000=##
log.instance.Transactions._001=## Transaction Logging
log.instance.Transactions._002=##
log.instance.Transactions.bufferSize=512
log.instance.Transactions.enable=true
log.instance.Transactions.expirationTime=0
log.instance.Transactions.fileName=/var/log/pki-ca/logs/transactions
log.instance.Transactions.flushInterval=5
log.instance.Transactions.level=1
log.instance.Transactions.maxFileSize=2000
log.instance.Transactions.pluginName=file
log.instance.Transactions.rolloverInterval=2592000
log.instance.Transactions.type=transaction
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For more information about these parameters and their values, see Section 13.1, “Certificate System Log Settings”. As long as audit logging is enabled, these values do not affect compliance.

9.2.3.3. Authentication and Authorization Settings
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The CS.cfg file sets how users are identified to access a subsystem instance (authentication) and what actions are approved (authorization) for each authenticated user.
A CS subsystem uses authentication plug-ins to define the method for logging into the subsystem.
The following example shows an authentication instance named SharedToken that instantiates a JAVA plug-in named SharedSecret. 
auths.impl.SharedToken.class=com.netscape.cms.authentication.SharedSecret
auths.instance.SharedToken.pluginName=SharedToken
auths.instance.SharedToken.dnpattern=
auths.instance.SharedToken.ldap.basedn=ou=People,dc=example,dc=org
auths.instance.SharedToken.ldap.ldapauth.authtype=BasicAuth
auths.instance.SharedToken.ldap.ldapauth.bindDN=cn=Directory Manager
auths.instance.SharedToken.ldap.ldapauth.bindPWPrompt=Rule SharedToken
auths.instance.SharedToken.ldap.ldapauth.clientCertNickname=
auths.instance.SharedToken.ldap.ldapconn.host=server.example.com
auths.instance.SharedToken.ldap.ldapconn.port=636
auths.instance.SharedToken.ldap.ldapconn.secureConn=true
auths.instance.SharedToken.ldap.ldapconn.version=3
auths.instance.SharedToken.ldap.maxConns=
auths.instance.SharedToken.ldap.minConns=
auths.instance.SharedToken.ldapByteAttributes=
auths.instance.SharedToken.ldapStringAttributes=
auths.instance.SharedToken.shrTokAttr=shrTok
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For some authorization settings, it is possible to select an authorization method that uses an LDAP database to store user entries, in which case the database settings are configured along with the plug-in as shown below. 
authz.impl.DirAclAuthz.class=com.netscape.cms.authorization.DirAclAuthz
authz.instance.DirAclAuthz.ldap=internaldb
authz.instance.DirAclAuthz.pluginName=DirAclAuthz
authz.instance.DirAclAuthz.ldap._000=##
authz.instance.DirAclAuthz.ldap._001=## Internal Database
authz.instance.DirAclAuthz.ldap._002=##
authz.instance.DirAclAuthz.ldap.basedn=dc=server.example.com-pki-ca
authz.instance.DirAclAuthz.ldap.database=server.example.com-pki-ca
authz.instance.DirAclAuthz.ldap.maxConns=15
authz.instance.DirAclAuthz.ldap.minConns=3
authz.instance.DirAclAuthz.ldap.ldapauth.authtype=SslClientAuth
authz.instance.DirAclAuthz.ldap.ldapauth.bindDN=cn=Directory Manager
authz.instance.DirAclAuthz.ldap.ldapauth.bindPWPrompt=Internal LDAP Database
authz.instance.DirAclAuthz.ldap.ldapauth.clientCertNickname=
authz.instance.DirAclAuthz.ldap.ldapconn.host=localhost
authz.instance.DirAclAuthz.ldap.ldapconn.port=11636
authz.instance.DirAclAuthz.ldap.ldapconn.secureConn=true
authz.instance.DirAclAuthz.ldap.multipleSuffix.enable=false
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For more information on securely configuring LDAP and an explanation of parameters, refer to Section 6.5.5, “Enabling TLS Client Authentication”. The parameters paths differ than what is shown there, but the same names and values are allowed in both places.
The CA also has to have a mechanism for approving user requests. As with configuring authorization, this is done by identifying the appropriate authentication plug-in and configuring an instance for it: 
auths.impl.AgentCertAuth.class=com.netscape.cms.authentication.AgentCertAuthentication
auths.instance.AgentCertAuth.agentGroup=Certificate Manager Agents
auths.instance.AgentCertAuth.pluginName=AgentCertAuth
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9.2.3.4. Subsystem Certificate Settings
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Several of the subsystems have entries for each subsystem certificate in the configuration file. 
ca.sslserver.cert=MIIDmDCCAoCgAwIBAgIBAzANBgkqhkiG9w0BAQUFADBAMR4wHAYDVQQKExVSZWR...
ca.sslserver.certreq=MIICizCCAXMCAQAwRjEeMBwGA1UEChMVUmVkYnVkY29tcHV0ZXIgRG9tYWluMSQwIgYDV...
ca.sslserver.nickname=Server-Cert cert-pki-ca
ca.sslserver.tokenname=Internal Key Storage Token
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9.2.3.5. Settings for Required Subsystems
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At a minimum, each subsystem depends on a CA, which means that the CA (and any other required subsystem) has to be configured in the subsystem's settings. Any connection to another subsystem is prefaced by conn. and then the subsystem type and number. 
conn.ca1.clientNickname=subsystemCert cert-pki-tps
conn.ca1.hostadminport=server.example.com:9445
conn.ca1.hostagentport=server.example.com:9444
conn.ca1.hostport=server.example.com:9443
conn.ca1.keepAlive=true
conn.ca1.retryConnect=3
conn.ca1.servlet.enrollment=/ca/ee/ca/profileSubmitSSLClient
conn.ca1.servlet.renewal=/ca/ee/ca/profileSubmitSSLClient
conn.ca1.servlet.revoke=/ca/subsystem/ca/doRevoke
conn.ca1.servlet.unrevoke=/ca/subsystem/ca/doUnrevoke
conn.ca1.timeout=100
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9.2.3.6. Database Settings
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All of the subsystems use an LDAP directory to store their information. This internal database is configured in the internaldb parameters, except for the TPS which configured it in the tokendb parameters with a lot of other configuration settings. 
internaldb._000=##
internaldb._000=##
internaldb._001=## Internal Database
internaldb._002=##
internaldb.basedn=o=pki-tomcat-ca-SD
internaldb.database=pki-tomcat-ca
internaldb.maxConns=15
internaldb.minConns=3
internaldb.ldapauth.authtype=SslClientAuth
internaldb.ldapauth.clientCertNickname=HSM-A:subsystemCert pki-tomcat-ca
internaldb.ldapconn.host=example.com
internaldb.ldapconn.port=11636
internaldb.ldapconn.secureConn=true
internaldb.multipleSuffix.enable=false
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For further information on securely configuring LDAP and an explanation of parameters, refer to Section 6.5.5, “Enabling TLS Client Authentication”. No additional configuration is necessary outside of what is done as part of Section 6.5.5, “Enabling TLS Client Authentication”.

9.2.3.7. Enabling and Configuring a Publishing Queue
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Enabling the publishing queue by editing the CS.cfg file allows administrators to set other options for publishing, like the number of threads to use for publishing operations and the queue page size.
  1. Stop the CA server, so that you can edit the configuration files. 
    # systemctl stop pki-tomcatd-nuxwdog@instance_name.service
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  2. Open the CA's CS.cfg file. 
    vim /var/lib/pki/instance_name/ca/conf/CS.cfg
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  3. Set the ca.publish.queue.enable to true. If the parameter is not present, then add a line with the parameter. 
    ca.publish.queue.enable=true
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  4. Set other related publishing queue parameters:
    • ca.publish.queue.maxNumberOfThreads sets the maximum number of threads that can be opened for publishing operations. The default is 3.
    • ca.publish.queue.priorityLevel sets the priority for publishing operations. The priority value ranges from -2 (lowest priority) to 2 (highest priority). Zero (0) is normal priority and is also the default.
    • ca.publish.queue.pageSize sets the maximum number of requests that can be stored in the publishing queue page. The default is 40.
    • ca.publish.queue.saveStatus sets the interval to save its status every specified number of publishing operations. This allows the publishing queue to be recovered if the CA is restarted or crashes. The default is 200, but any non-zero number will recover the queue when the CA restarts. Setting this parameter to 0 disables queue recovery. 
    ca.publish.queue.maxNumberOfThreads=1
	ca.publish.queue.priorityLevel=0
	ca.publish.queue.pageSize=100
	ca.publish.queue.saveStatus=200
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    Note

    Setting ca.publish.queue.enable to false and ca.publish.queue.maxNumberOfThreads to 0 disables both the publishing queue and using separate threads for publishing issued certificates.
  5. Restart the CA server. 
    systemctl start pki-tomcatd-nuxwdog@instance_name.service
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9.2.3.8. Settings for PKI Tasks
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The CS.cfg file is used to configure the PKI tasks for every subsystem. The parameters are different for every single subsystem, without any overlap.
For example, the KRA has settings for a required number of agents to recover a key. 
kra.noOfRequiredRecoveryAgents=1
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Review the CS.cfg file for each subsystem to become familiar with its PKI task settings; the comments in the file are a decent guide for learning what the different parameters are.
  • The CA configuration file lists all of the certificate profiles and policy settings, as well as rules for generating CRLs.
  • The TPS configures different token operations.
  • The TKS lists profiles for deriving keys from different key types.
  • The OCSP sets key information for different key sets.

9.2.3.9. Changing DN Attributes in CA-Issued Certificates
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In certificates issued by the Certificate System, DNs identify the entity that owns the certificate. In all cases, if the Certificate System is connected with a Directory Server, the format of the DNs in the certificates should match the format of the DNs in the directory. It is not necessary that the names match exactly; certificate mapping allows the subject DN in a certificate to be different from the one in the directory.
In the Certificate System, the DN is based on the components, or attributes, defined in the X.509 standard. Table 9.8, “Allowed Characters for Value Types” lists the attributes supported by default. The set of attributes is extensible.
Expand
Table 9.8. Allowed Characters for Value Types
Attribute Value Type Object Identifier
cn DirectoryString 2.5.4.3
ou DirectoryString 2.5.4.11
o DirectoryString 2.5.4.10
c PrintableString , two-character 2.5.4.6
l DirectoryString 2.5.4.7
st DirectoryString 2.5.4.8
street DirectoryString 2.5.4.9
title DirectoryString 2.5.4.12
uid DirectoryString 0.9.2342.19200300.100.1.1
mail IA5String 1.2.840.113549.1.9.1
dc IA5String 0.9.2342.19200300.100.1.2.25
serialnumber PrintableString 2.5.4.5
unstructuredname IA5String 1.2.840.113549.1.9.2
unstructuredaddress PrintableString 1.2.840.113549.1.9.8
By default, the Certificate System supports the attributes identified in Table 9.8, “Allowed Characters for Value Types”. This list of supported attributes can be extended by creating or adding new attributes. The syntax for adding additional X.500Name attributes, or components, is as follows: 
X500Name.NEW_ATTRNAME.oid=n.n.n.n
X500Name.NEW_ATTRNAME.class=string_to_DER_value_converter_class
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The value converter class converts a string to an ASN.1 value; this class must implement the netscape.security.x509.AVAValueConverter interface. The string-to-value converter class can be one of the following:
  • netscape.security.x509.PrintableConverter converts a string to a PrintableString value. The string must have only printable characters.
  • netscape.security.x509.IA5StringConverter converts a string to an IA5String value. The string must have only IA5String characters.
  • netscape.security.x509.DirStrConverter converts a string to a DirectoryString. The string is expected to be in DirectoryString format according to RFC 2253.
  • netscape.security.x509.GenericValueConverter converts a string character by character in the following order, from the smallest characterset to the largest:
    • Printable
    • IA5String
    • BMPString
    • Universal String
An attribute entry looks like the following: 
X500Name.MY_ATTR.oid=1.2.3.4.5.6
X500Name.MY_ATTR.class=netscape.security.x509.DirStrConverter
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9.2.3.9.1. Adding New or Custom Attributes
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To add a new or proprietary attribute to the Certificate System schema, do the following:
  1. Stop the Certificate Manager. 
    systemctl stop pki-tomcatd-nuxwdog@instance_name.service
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  2. Open the /var/lib/pki/cs_instance/conf/ directory.
  3. Open the configuration file, CS.cfg.
  4. Add the new attributes to the configuration file.
    For example, to add three proprietary attributes, MYATTR1 that is a DirectoryString, MYATTR2 that is an IA5String, and MYATTR3 that is a PrintableString, add the following lines at the end of the configuration file: 
    X500Name.attr.MYATTR1.oid=1.2.3.4.5.6
X500Name.attr.MYATTR1.class=netscape.security.x509.DirStrConverter
X500Name.attr.MYATTR2.oid=11.22.33.44.55.66
X500Name.attr.MYATTR2.class=netscape.security.x509.IA5StringConverter
X500Name.attr.MYATTR3.oid=111.222.333.444.555.666
X500Name.attr.MYATTR3.class=netscape.security.x509.PrintableConverter
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  5. Save the changes, and close the file.
  6. Restart the Certificate Manager. 
    systemctl start pki-tomcatd-nuxwdog@instance_name.service
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  7. Reload the enrollment page and verify the changes; the new attributes should show up in the form.
  8. To verify that the new attributes are in effect, request a certificate using the manual enrollment form.
    Enter values for the new attributes so that it can be verified that they appear in the certificate subject names. For example, enter the following values for the new attributes and look for them in the subject name: 
    MYATTR1: a_value
MYATTR2: a.Value
MYATTR3: aValue
cn: John Doe
o: Example Corporation
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  9. Open the agent services page, and approve the request.
  10. When the certificate is issued, check the subject name. The certificate should show the new attribute values in the subject name.
9.2.3.9.2. Changing the DER-Encoding Order
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It is possible to change the DER-encoding order of a DirectoryString, so that the string is configurable since different clients support different encodings.
The syntax for changing the DER-encoding order of a DirectoryString is as follows: 
X500Name.directoryStringEncodingOrder=encoding_list_separated_by_commas
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The possible encoding values are as follows:
  • Printable
  • IA5String
  • UniversalString
  • BMPString
  • UTF8String
For example, the DER-encoding ordered can be listed as follows: 
X500Name.directoryStringEncodingOrder=Printable,BMPString
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To change the DirectoryString encoding, do the following:
  1. Stop the Certificate Manager. 
    systemctl stop pki-tomcatd-nuxwdog@instance_name.service
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  2. Open the /var/lib/pki/cs_instance/conf/ directory.
  3. Open the CS.cfg configuration file.
  4. Add the encoding order to the configuration file.
    For example, to specify two encoding values, PrintableString and UniversalString, and the encoding order is PrintableString first and UniversalString next, add the following line at the end of the configuration file: 
    X500Name.directoryStringEncodingOrder=PrintableString, UniversalString
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  5. Save the changes, and close the file.
  6. Start the Certificate Manager. 
    systemctl start pki-tomcatd-nuxwdog@instance_name.service
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  7. To verify that the encoding orders are in effect, enroll for a certificate using the manual enrollment form. Use John_Doe for the cn.
  8. Open the agent services page, and approve the request.
  9. When the certificate is issued, use the dumpasn1 tool to examine the encoding of the certificate.
    The cn component of the subject name should be encoded as a UniversalString.
  10. Create and submit a new request using John Smith for the cn.
    The cn component of the subject name should be encoded as a PrintableString.

9.2.3.10. Setting a CA to Use a Different Certificate to Sign CRLs
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A Certificate Manager uses the key pair corresponding to its OCSP signing certificate for signing certificates and certificate revocation lists (CRLs). To use a different key pair to sign the CRLs that the Certificate Manager generates, then a CRL signing certificate can be created. The Certificate Manager's CRL signing certificate must be signed or issued by itself.
To enable a Certificate Manager to sign CRLs with a different key pair, do the following:
  1. Request and install a CRL signing certificate for the Certificate Manager using CMC. For details about requesting a system certificate, see 5.3.2.1. Obtaining System and Server Certificates in Red Hat Certificate System's Administration Guide.
    Note that the profile used to obtain the certificate must use the keyUsageExtDefaultImpl class id and the corresponding keyUsageCrlSign parameter set to true: 
    policyset.userCertSet.6.default.class_id=keyUsageExtDefaultImpl
policyset.userCertSet.6.default.params.keyUsageCrlSign=true
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  2. After the CRL signing certificate is generated, install the certificate in the Certificate Manager's database through System Keys and Certificates in the console.
  3. Stop the Certificate Manager. 
    # systemctl stop pki-tomcatd-nuxwdog@instance_name.service
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  4. Update the Certificate Manager's configuration to recognize the new key pair and certificate.
    1. Change to the Certificate Manager instance configuration directory. 
      ]# cd /var/lib/pki/instance_name/ca/conf/
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    2. Open the CS.cfg file and add the following lines: 
      ca.crl_signing.cacertnickname=nickname cert-instance_ID
ca.crl_signing.defaultSigningAlgorithm=signing_algorithm
ca.crl_signing.tokenname=token_name
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      nickname is the name assigned to the CRL signing certificate.
      instance_ID is the name of the Certificate Manager instance.
      If the installed CA is a RSA-based CA, signing_algorithm can be SHA256withRSA, SHA384withRSA, or SHA512withRSA. If the installed CA is an EC-based CA, signing_algorithm can be SHA256withEC, SHA384withEC, SHA512withEC.
      token_name is the name of the token used for generating the key pair and the certificate. If the internal/software token is used, use Internal Key Storage Token as the value.
      For example, the entries might look like this: 
      ca.crl_signing.cacertnickname=crlSigningCert cert-pki-ca
ca.crl_signing.defaultSigningAlgorithm=SHAMD512withRSA
ca.crl_signing.tokenname=Internal Key Storage Token
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    3. Save the changes, and close the file.
  5. Restart the Certificate Manager. 
    # systemctl restart pki-tomcatd-nuxwdog@instance_name.service
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    Now the Certificate Manager is ready to use the CRL signing certificate to sign the CRLs it generates.

9.2.3.11. Configuring CRL Generation from Cache in CS.cfg
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The CRL cache is a simple mechanism that allows cert revocation information to be taken from a collection of revocation information maintained in memory. For best performance, it is recommended that this feature be enabled, which already represents the default behavior. The following configuration information (which is the default) is presented for information purposes or if changes are desired.
  1. Stop the CA server. 
    systemctl stop pki-tomcatd-nuxwdog@instance_name.service
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  2. Open the CA configuration directory. 
    # cd /var/lib/instance_name/conf/
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  3. Edit the CS.cfg file, setting the enableCRLCache and enableCacheRecovery parameters to true: 
    ca.crl.MasterCRL.enableCRLCache=true
ca.crl.MasterCRL.enableCacheRecovery=true
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  4. Start the CA server. 
    systemctl start pki-tomcatd-nuxwdog@instance_name.service
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9.2.3.12. Configuring Update Intervals for CRLs in CS.cfg
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The following describes how to configure the CRL system flexibly to reflect desired behavior. The goal is to configure CRL updates according to some schedule of two types. One type allows for a list of explicit times and the other consists of a length of time interval between updates. There is also a hybrid scenario where both are enabled to account for drift. The Note entry just below actually represents the default out of the box scenario.
The default scenario is listed as follows: 
ca.crl.MasterCRL.updateSchema=3
ca.crl.MasterCRL.enableDailyUpdates=true
ca.crl.MasterCRL.enableUpdateInterval=true
ca.crl.MasterCRL.autoUpdateInterval=240
ca.crl.MasterCRL.dailyUpdates=1:00
ca.crl.MasterCRL.nextUpdateGracePeriod=0
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Deviate from this only when a more detailed and specific update schedule is desired. The rest of the section will talk about how that is accomplished.
Configuring the settings for full and delta CRLs in the CS.cfg file involves editing parameters.
Expand
Table 9.9. CRL Extended Interval Parameters
Parameter Description Accepted Values
updateSchema Sets the ratio for how many delta CRLs are generated per full CRL. An integer value
enableDailyUpdates Enables and disables setting CRL updates based on set times. true or false
enableUpdateInterval Enables and disables setting CRL updates based on set intervals. true or false
dailyUpdates Sets the times the CRLs should be updated A comma-delimited list of times
autoUpdateInterval Sets the interval in minutes to update the CRLs. An integer value
nextUpdateGracePeriod Adds the time in minutes to the CRL validity period to ensure that CRLs remain valid throughout the publishing or replication period. An integer value
refreshInSec Sets the periodicity in seconds of the thread on the clone OCSP to check LDAP for any updates of the CRL. An integer value

Procedure 9.1. How to configure CRL update intervals in CS.cfg

  1. Stop the CA server. 
    # systemctl stop pki-tomcatd-nuxwdog@instance_name.service
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  2. Change to the CA configuration directory. 
    # cd /var/lib/instance_name/conf/
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  3. Edit the CS.cfg file, and add the following line to set the update interval: 
    ca.crl.MasterCRL.updateSchema=3
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    The default interval is 1, meaning a full CRL is generated every time a CRL is generated. The updateSchema interval can be set to any integer.
  4. Set the update frequency, either by specifying a cyclical interval or set times for the updates to occur:
    • Specify set times by enabling the enableDailyUpdates parameter, and add the desired times to the dailyUpdates parameter: 
      ca.crl.MasterCRL.enableDailyUpdates=true
	ca.crl.MasterCRL.enableUpdateInterval=false
	ca.crl.MasterCRL.dailyUpdates=0:50,04:55,06:55
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      This field sets a daily time when the CRL should be updated. To specify multiple times, enter a comma-separated list of times, such as 01:50,04:55,06:55. To enter a schedule for multiple days, enter a comma-separated list to set the times within the same day, and then a semicolon separated list to identify times for different days. For example, set 01:50,04:55,06:55;02:00,05:00,17:00 to configure revocation on Day 1 of the cycle at 1:50am, 4:55am, and 6:55am and then Day 2 at 2am, 5am, and 5pm.
      Specify intervals by enabling the enableUpdateInterval parameter, and add the required interval in minutes to the autoUpdateInterval parameter: 
      ca.crl.MasterCRL.enableDailyUpdates=false
	ca.crl.MasterCRL.enableUpdateInterval=true
	ca.crl.MasterCRL.autoUpdateInterval=240
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  5. Set the following parameters depending on your environment:
    • If you run a CA without an OCSP subsystem, set: 
      ca.crl.MasterCRL.nextUpdateGracePeriod=0
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    • If you run a CA with an OCSP subsystem, set: 
      ca.crl.MasterCRL.nextUpdateGracePeriod=time_in_minutes
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      The ca.crl.MasterCRL.nextUpdateGracePeriod parameter defines the time in minutes, and the value must be big enough to enable the CA to propagate the new CRL to the OCSP. You must set the parameter to a non-zero value.
      If you additionally have OCSP clones in your environment, also set: 
      ocsp.store.defStore.refreshInSec=time_in_seconds
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      The ocsp.store.defStore.refreshInSec parameter sets the frequency in seconds with which the clone OCSP instances are informed of CRL updates through LDAP replication updates from the master OCSP instance.
    See Table 9.9, “CRL Extended Interval Parameters” for details on the parameters.
  6. Restart the CA server. 
    systemctl start pki-tomcatd-nuxwdog@instance_name.service
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Note

Schedule drift can occur when updating CRLs by interval. Typically, drift occurs as a result of manual updates and CA restarts.
To prevent schedule drift, set both enableDailyUpdates and enableUpdateInterval parameters to true, and add the required values to autoUpdateInterval and dailyUpdates: 
ca.crl.MasterCRL.enableDailyUpdates=true
ca.crl.MasterCRL.enableUpdateInterval=true
ca.crl.MasterCRL.autoUpdateInterval=240
ca.crl.MasterCRL.dailyUpdates=1:00
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Only one dailyUpdates value will be accepted when updating CRLs by interval.
The interval updates will resynchronize with the dailyUpdates value every 24 hours preventing schedule drift.

9.2.3.13. Changing the Access Control Settings for the Subsystem
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By default, access control rules are applied by evaluating deny rules first and then by evaluating allow rules. To change the order, change the authz.evaluateOrder parameter in the CS.cfg. 
authz.evaluateOrder=deny,allow
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Additionally, access control rules can be evaluated from the local web.xml file (basic ACLs) or more complex ACLs can be accessed by checking the LDAP database. The authz.sourceType parameter identifies what type of authorization to use. 
authz.sourceType=web.xml
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Note

Always restart the subsystem after editing the CS.cfg file to load the updated settings.
Edit the CS.cfg file of each subsystem, search for the authType parameter and set it as follows: 
authType=sslclientauth
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