On Photon OS,
tdnf is the default package manager. The standard syntax for
tdnf commands is the same as that for DNF and Yum:
tdnf [options] <command> [<arguments>...]
The main configuration files reside in
/etc/tdnf/tdnf.conf. The repositories appear in
.repo file extensions. For more information, see the Photon OS Administration Guide.
The cache files for data and metadata reside in
/var/cache/tdnf. The local cache is populated with data from the repository:
ls -l /var/cache/tdnf/photon total 8 -r--r--r-- 1 root root 0 Apr 20 13:32 lastrefresh drwxr-xr-x 2 root root 4096 Apr 20 13:32 repodata drwxr-xr-x 2 root root 4096 Apr 20 13:32 solvcache
You can clear the cache to help troubleshoot a problem, but doing so might slow the performance of
tdnf until the cache becomes repopulated with data. Cleaning the cache can remove stale information. Clear the cache as follows:
tdnf clean all cleaning photon-iso: metadata dbcache packages keys expire-cache cleaning photon-release: metadata dbcache packages keys expire-cache cleaning photon-updates: metadata dbcache packages keys expire-cache cleaning photon: metadata dbcache packages keys expire-cache cleaning photon-debuginfo: metadata dbcache packages keys expire-cache cleaning photon-srpms: metadata dbcache packages keys expire-cache Done.
Some tdnf commands can help you troubleshoot problems with packages:
This command updates the cached binary metadata for all known repositories. You can run it after you clean the cache to make sure you are working with the latest repository data as you troubleshoot.
tdnf makecache Refreshing metadata for: 'VMware Photon Linux 5.0 (x86_64) Updates' Refreshing metadata for: 'VMware Photon Linux 5.0 (x86_64)' Metadata cache created. 3107 100%
This command resolves dependencies by using the local RPMs to help check RPMs for quality assurance before publishing them. To check RPMs with this command, you must create a local directory and place your RPMs in it. The command, which includes no options, takes the path to the local directory containing the RPMs as its argument. The command does not, however, recursively parse directories; it checks the RPMs only in the directory that you specify.
For example, after creating a directory named
/tmp/myrpmsand placing your RPMs in it, you can run the following command to check them:
tdnf check-local /tmp/myrpms Checking all packages from: /tmp/myrpms Found 10 packages Check completed without issues
This command finds the packages that provide the package that you supply as an argument. If you are used to a package name for another system, you can use
tdnf providesto find the corresponding name of the package on Photon OS.
tdnf provides docker docker-23.0.2-1.ph5.x86_64 : Docker Repo : photon docker-23.0.1-2.ph5.x86_64 : Docker Repo : photon-updates docker-23.0.2-1.ph5.x86_64 : Docker Repo : @System
For a file, you must provide the full path. Example:
tdnf provides /usr/include/stdio.h [using file list match for '/usr/include/stdio.h'] glibc-devel-2.36-4.ph5.x86_64 : Header files for glibc Repo : photon glibc-devel-2.36-3.ph5.x86_64 : Header files for glibc Repo : photon-updates
The following example shows you how to find the package that provides a pluggable authentication module, which you might need to find if the system is mishandling passwords.
tdnf provides /etc/pam.d/system-account [using file list match for '/etc/pam.d/system-account'] shadow-4.13-3.ph5.x86_64 : Programs for handling passwords in a secure way Repo : photon shadow-4.13-3.ph5.x86_64 : Programs for handling passwords in a secure way Repo : photon-updates shadow-4.13-3.ph5.x86_64 : Programs for handling passwords in a secure way Repo : @System
For more commands see the Photon OS Administration Guide.
If a package that is installed is not working, try re-installing it. Example:
tdnf reinstall shadow Reinstalling: shadow x86_64 4.13-3.ph5 photon-updates 1.87M 368.07k Total installed size: 1.87M Total download size: 368.07k Is this ok [y/N]: y shadow 376905 100% Testing transaction Running transaction Installing/Updating: shadow-4.13-3.ph5.x86_64 Removing: shadow-4.13-3.ph5.x86_64