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Important
Do not create an RPM by archiving files and then unarchiving them in the post-install script. This
defeats the purpose of RPM.
If the files in the archive are not included in the file list, they cannot be verified or examined for conflicts.
In the vast majority of cases, RPM itself can pack and unpack archives most effectively anyway. For
instance, don't create files in a %post that cannot or will not be cleaned up in a %postun section.
4.2. Digital Signatures for Red Hat Network Packages
All packages distributed through Red Hat Network should have a digital signature. A digital signature is
created with a unique private key and can be verified with the corresponding public key. After creating a
package, the SRPM (Source RPM) and the RPM can be digitally signed with a GnuPG key. Before the
package is installed, the public key is used to verify the package was signed by a trusted party and the
package has not changed since it was signed.
4.2.1. Generating a GnuPG Keypair
A GnuPG keypair consists of the private and public keys. T o generate a keypair:
1. Type the following command as the root user on the shell prompt:
gpg --gen-key
GPG Keypairs should not be created by non-root users. T he root user can lock memory pages
which means the information is never written to disk, unlike non-root users.
2. After executing the command to generate a keypair, an introductory screen containing key options
similar to the following will appear:
gpg (GnuPG) 2.0.14; Copyright (C) 2009 Free Software Foundation, Inc.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Please select what kind of key you want:
(1) RSA and RSA (default)
(2) DSA and Elgamal
(3) DSA (sign only)
(4) RSA (sign only)
Your selection?
3. Choose the option: (2) DSA and ElGamal. This option allows you to create a digital signature and
encrypt/decrypt with two types of technologies. T ype 2 and then press Enter.
4. Choose the key size, which is how long the key should be. T he longer the key, the more resistant
against attacks the messages are. Creating a key of at least 2048 bits in size is recommended.
5. The next option will ask to specify how long the key needs to be valid. When choosing an
expiration date, remember that anyone using the public key must also be informed of the
expiration and supplied with a new public key. It is recommended to not select an expiration date. If
an expiration date is not specified, you are asked to confirm your decision:
Key does not expire at all Is this correct (y/n)?
Chapter 4. Custom Package Management
61
- Red Hat Satellite 5.6 1
- Reference Guide 1
- Edition 1 2
- Table of Contents 4
- 1. Audience 10
- 2. Document Conventions 10
- 2.2. Pull-quote Conventions 11
- 2.3. Notes and Warnings 12
- Important 12
- 3.1. Do You Need Help? 12
- 3.2. We Need Feedback! 13
- 1.2. Monitoring 23
- 1.2.1. Prerequisites 24
- 1.2.4. Enabling Notifications 27
- 1.2.5. About Probes 30
- 1.2.6. Monitoring 31
- 1.3. Multiple Satellites 37
- 2.1. UNIX Support Guide 45
- # pkginfo 49
- 2.1.5. Remote Commands 56
- 4.1.1. RPM Benefits 62
- 4.2.2. Signing packages 66
- Chapter 5. Troubleshooting 68
- # rm -rf temporary-directory 70
- # rhn-schema-version 74
- # rhn-charsets 74
- A.1. Probe Guidelines 92
- A.2. Apache 1.3.x and 2.0.x 93
- A.2.2. Apache::Traffic 94
- A.2.3. Apache::Uptime 94
- A.3.5. BEA WebLogic::Servlet 97
- A.4. General 98
- A.4.3. General::SNMP Check 99
- A.4.4. General::TCP Check 100
- A.4.5. General::UDP Check 100
- A.5. Linux 101
- A.5.3. Linux::Disk Usage 102
- A.5.4. Linux::Inodes 103
- A.5.6. Linux::Load 104
- A.5.7. Linux::Memory Usage 104
- A.5.10. Linux::Process Health 106
- A.5.12. Linux::Swap Usage 107
- A.5.14. Linux::Users 108
- A.6. LogAgent 109
- A.6.2. LogAgent::Log Size 110
- A.7. MySQL 3.23 - 3.33 111
- A.7.3. MySQL::Open T ables 112
- A.7.4. MySQL::Query Rate 112
- A.8. Network Services 113
- A.8.2. Network Services::FTP 114
- A.8.5. Network Services::Ping 115
- A.8.10. Network Services::SSH 118
- A.9.2. Oracle::Availability 120
- A.9.4. Oracle::Buffer Cache 121
- A.9.8. Oracle::Idle Sessions 123
- A.9.9. Oracle::Index Extents 123
- A.9.10. Oracle::Library Cache 124
- A.9.11. Oracle::Locks 124
- A.9.12. Oracle::Redo Log 125
- A.9.13. Oracle::Table Extents 125
- A.10. Red Hat Satellite 127
- Field Value 132
- Critical Maximum Users 132
- Warning Maximum Users 132
- Revision History 133
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