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Requested and Answered by donavan [donavan] on 25-Oct-2004 03:43 (82042 reads)
How do I get updates for CentOS?
CentOS ships with an application called yum that serves as our recommended tool for performing updates and package installation. Please see this guide for Managing software with Yum
A version of up2date is also provided that does not connect to the upstream vendor, but instead connects to the CentOS Network (CN) for updates.
CentOS has made a decision to NOT automatically load our RPM-GPG-KEY for CentOS-3, but to allow users to first verify the key and then install it. This will prevent people from modifying our key and installing modified software. In CentOS 4, yum will import the key, but only after the user sees the key and can verify it is authentic.
The is a seperate FAQ question concerning how to import the CentOS RPM signature key.
Note on using yum (with CentOS-2 and CentOS-3), the first time you run yum, you may download a large number of header files (100's). These are generally very small files. Yum uses the header files to determine dependancies, packages available for install, etc. Do not be alarmed when this initial download occurs. yum is NOT downloading the packages.
After the first update, you will only download new headers.
(Note, with CentOS-4 we use a newer version of yum, so there is a new metadata system that has the hdr files compressed in a single file ...)
A version of up2date is also provided that does not connect to the upstream vendor, but instead connects to the CentOS Network (CN) for updates.
CentOS has made a decision to NOT automatically load our RPM-GPG-KEY for CentOS-3, but to allow users to first verify the key and then install it. This will prevent people from modifying our key and installing modified software. In CentOS 4, yum will import the key, but only after the user sees the key and can verify it is authentic.
The is a seperate FAQ question concerning how to import the CentOS RPM signature key.
Note on using yum (with CentOS-2 and CentOS-3), the first time you run yum, you may download a large number of header files (100's). These are generally very small files. Yum uses the header files to determine dependancies, packages available for install, etc. Do not be alarmed when this initial download occurs. yum is NOT downloading the packages.
After the first update, you will only download new headers.
(Note, with CentOS-4 we use a newer version of yum, so there is a new metadata system that has the hdr files compressed in a single file ...)
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