YumLog - file /var/log/yum.log

This module provides parsing for the /var/log/yum.log file. The YumLog class implements parsing for the file, which looks like:

May 13 15:54:49 Installed: libevent-2.0.21-4.el7.x86_64
May 13 15:54:49 Installed: tmux-1.8-4.el7.x86_64
May 23 18:06:24 Installed: wget-1.14-10.el7_0.1.x86_64
May 23 18:10:05 Updated: 1:openssl-libs-1.0.1e-51.el7_2.5.x86_64
May 23 18:10:05 Installed: 1:perl-parent-0.225-244.el7.noarch
May 23 18:10:05 Installed: perl-HTTP-Tiny-0.033-3.el7.noarch
May 23 16:09:09 Erased: redhat-access-insights-batch
May 23 18:10:05 Installed: perl-podlators-2.5.1-3.el7.noarch
May 23 18:10:05 Installed: perl-Pod-Perldoc-3.20-4.el7.noarch
May 23 18:10:05 Installed: 1:perl-Pod-Escapes-1.04-286.el7.noarch
May 23 18:10:06 Installed: perl-Text-ParseWords-3.29-4.el7.noarch

The information is stored as a list of Entry objects, each of which contains attributes for the position in the log, timestamp of the action, the package’s state in the system, and the affected package as an InstalledRpm.


The examples in this module may be executed with the following command:

python -m insights.parsers.yumlog


>>> content = '''
... May 23 18:06:24 Installed: wget-1.14-10.el7_0.1.x86_64
... Jan 24 00:24:00 Updated: glibc-2.12-1.149.el6_6.4.x86_64
... Jan 24 00:24:09 Updated: glibc-devel-2.12-1.149.el6_6.4.x86_64
... Jan 24 00:24:10 Updated: nss-softokn-3.14.3-19.el6_6.x86_64
... Jan 24 18:10:05 Updated: 1:openssl-libs-1.0.1e-51.el7_2.5.x86_64
... Jan 24 00:24:11 Updated: glibc-2.12-1.149.el6_6.4.i686
... May 23 16:09:09 Erased: redhat-access-insights-batch
... Jan 24 00:24:11 Updated: glibc-devel-2.12-1.149.el6_6.4.i686
... '''.strip()
>>> from insights.tests import context_wrap
>>> yl = YumLog(context_wrap(content))
>>> e = yl.present_packages.get('nss-softokn')
>>> e.pkg.release
>>> e = yl.present_packages.get('openssl-libs')
>>> e.pkg.name
>>> e.pkg.version
>>> len(yl)
>>> indices = [e.idx for e in yl]
>>> indices == range(len(yl))
class insights.parsers.yumlog.Entry(idx, timestamp, state, pkg)

Bases: tuple

namedtuple: Represents a line in /var/log/yum.log.

property idx
property pkg
property state
property timestamp
class insights.parsers.yumlog.YumLog(context)[source]

Bases: Parser

Class for parsing /var/log/yum.log

ERASED = 'Erased'

Package Erased

INSTALLED = 'Installed'

Package Installed

UPDATED = 'Updated'

Package Updated


Parses contents of each line in /var/log/yum.log.

Each line in the file contains 5 fields that are parsed into the attributes of Entry instances:

  • month

  • day

  • time

  • state

  • package

The month, day, and time form the Entry.timestamp. Entry.state contains the state of the package, one of ERASED, INSTALLED, or UPDATED. Entry.pkg contains the InstalledRpm instance corresponding to the parse package. Entry.idx is the zero-based line number of the Entry in the file. It can be used to tell ordering of events.


content (list) -- Lines of /var/log/yum.log to be parsed.


ParseException -- if a line can’t be parsed for any reason.

property present_packages

list of latest Entry instances for installed packages.