amidar The existing instructions work for CentOS 7 with an internet connection. You'll need to explore for yourself to see what is required in your air-gapped environment.

Same problem here on one of our old Jenkins Boxes with CentOS 6 (which we still have in place for some legacy applications).

So far i only installed daemonize manually

• http://software.clapper.org/daemonize/

wget https://github.com/bmc/daemonize/archive/refs/heads/master.zip
unzip master.zip
cd daemonize-master/
configure
make
make install

But havent solved it yet...

[root@swpsci01 tmp]# rpm -U jenkins-latest.rpm
warning: jenkins-latest.rpm: Header V4 RSA/SHA512 Signature, key ID 45f2c3d5: NOKEY
error: Failed dependencies:
        daemonize is needed by jenkins-2.303.1-1.1.noarch
[root@swpsci01 tmp]# daemonize
daemonize, version 1.7.8

phreakadelle the dependency in the rpm file can only be satisfied with an rpm package for daemonize. Installing from source won't do it because the RPM package manager won't realize that the dependency is satisfied. You might try enabling the epel-release repository (if they still support CentOS 6) and then installing.

I eventually updated the air gapped Jenkins server on our site. it has centos 6.4 and I used the following packages:

https://fedora-archive.ip-connect.info/epel/6/x86_64/epel-release-6-8.noarch.rpm

https://fedora-archive.ip-connect.info/epel/6/x86_64/Packages/d/daemonize-1.7.3-1.el6.x86_64.rpm

Fixed by updating the documentation to mention the change in RPM package definition