Upgrade Nexus OCSP Responder on Linux

This article includes updates for OCSP 6.4.1.

Prerequisites

For version 6.4.0 and later versions, Java Runtime Environment (64 bits) version 21 is mandatory.
Nexus OCSP Responder version 5.x, or later.
Create a backup for bin, certs, config, cils, crls and log contents before performing the upgrade.

Upgrade Nexus OCSP Responder

Unpack the Nexus OCSP Responder distribution
nexus-ocsp-linux-release-<Version>.zip
1. Then unpack
  nexus-ocsp-linux-release-<version>\Installation\nexus-ocsp-linux-<Version>.tgz
Stop the Nexus OCSP service.
```
service nexus-ocsp stop
```
Replace the files from nexus-ocsp-linux-<Version>.tgz.
In <install_root>/lib:
1. Remove all files in this directory from previous installations.
2. Copy new jars form untarred lib folder.
3. In <install_root>/bin:
  1. Replace all files except nexus-ocsp.conf and nexus-ocsp.sh with the new ones
Version-specific instructions:

Remove legacy properties

Remove the property -Djava.library.path under JAVAFLAGS option in nexus-ocsp.conf if present.

Migrating to systemd from old SysVinit-based distributions

Remove the SysV OCSP service:

chkconfig --del nexus-ocsp
rm /etc/init.d/nexus-ocsp

Install the systemd nexus-ocsp service by running the install.sh script (after running chmod a+x install.sh) with options -d -p -P -u -g in the unpacked distribution.

Use option -h to view a description of the above options.
To only install the nexus-ocsp.service, use the -d option.

Upgrading from 6.2.5 or earlier

Replace the following line in nexus-ocsp.conf:

SERVICEARGUMENTS="-p <ocsp-config-dir>"

with

SERVICEARGUMENTS="-P <ocsp-config-dir>"

Upgrading from 6.3.x or earlier

If Java 21 is not installed as default Java, edit the file <install_root>/bin/nexus-ocsp.conf to add at the end of the file:

JAVA=<path_to_bin_java_in_jre_21>

Ensure the service user have execute permissions to the new files:

chown -R ocspuser:ocspuser /opt/ocsp/

Add new introduced parameters to adapt the old configuration in <install root>/conf with the new functionalities described in the release note , for each version in Nexus OCSP Responder .
The reference configuration can be found in
nexus-ocsp-6.x/config/ocsp.conf in nexus-ocsp-linux-6.x.tgz.
Start the Nexus OCSP service.
```
service nexus-ocsp start
```

New parameters that must be added:

Nexus OCSP 6.4.1 specific parameters

The configuration parameter key.store.store.<#>.pin is now also enabled for use with PKCS #11 key stores. This is to enable support for the Utimaco CP5 HSM.
If currently having the "key.store.store.<#>.pin" parameter configured for a PKCS # 11 key store it may cause failure to login after upgrading. In such cases, the parameter may need to be removed, or the "key.store.store.<#>.tokenlabel" may need to be added.