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xref:dnf.adoc[DNF] package installation messages
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works in libvirt>=0.8.2
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where:
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What is logged remotely
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`WARN`
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virt-install
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TTY devices
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`tty3` and `tty4` reflect certain log files. Log files always contain messages from all the loglevels, including debug, but the minimal loglevel on the terminals can be controlled with the `loglevel` link:https://anaconda-installer.readthedocs.io/en/latest/boot-options.html#inst-loglevel[command line option].
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`/tmp/syslog`
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`/tmp/storage.log`
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`/tmp/program.log`
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`/tmp/packaging.log`
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`/tmp/anaconda.log`
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This builds a file `/tmp/anaconda-tb-?????` that also contains `anaconda.log`, `storage.log` and `syslog`.
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The remote syslog configuration exploits several log message characteristics to be able to sort them into the correct files:
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The remote logging only works when the installer initializes network. Once network is up, it takes a couple of minutes for rsyslogd to realize this. Rsyslog has a queue for messages that couldn't be forwarded because of inaccessible network and it eventually forwards all of them, in the correct order.
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There are two other log files created on the target filesystem, in the `/root` directory, also accessible at `/mnt/sysimage/root` during the installation:
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the IP of the message sender to know which machine generated the message and thud what directory does the message belong to.
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the general installation information, particularly the step changes.
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The anaconda RPM provides the `analog` script, which generates a suitable rsyslogd configuration file based on a couple of install parameters.
It is also able to generate a bash command to launch rsyslogd with the generated configuration.
Thus you can do from a shell:
`$ eval scripts/analog -p 6080 -s -o ./someconf /home/akozumpl/remote_inst`
This starts an rsyslog daemon that will listen on port 6080.
The logs from the remote machine with IP 10.34.33.221 will be stored under `/home/akozumpl/remote_inst/10.34.33.221/`, e.g. `/home/akozumpl/remote_inst/10.34.33.221/anaconda.log`.
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