rpm + how to identify if some rpm was removed or was not installed when installing the OS

sheffadmin asked:

we have rhel 7.6 machines

we notice that some specific rpm isn’t installed on the machine

the problem is that we not sure if someone remove it by yum remove or rpm -i

simply rpm was not installed from beginning when OS installed from scratch

any advice how we can do if rpm not installed with OS installation

or rpm removed by someone ?

My answer:

You can use yum history to find detailed information about a package installation, upgrade, or removal.

yum history list <package> will give a summary and yum history info <package> will give very detailed information.

For example:

[[email protected] ~]# yum history list htop
Loaded plugins: fastestmirror
ID     | Command line             | Date and time    | Action(s)      | Altered
-------------------------------------------------------------------------------
     7 | -d 2 -y install tmux tra | 2019-12-04 03:33 | I, U           |   49   
history list

If more details are needed:

[[email protected] ~]# yum history info htop
Loaded plugins: fastestmirror
Transaction ID : 7
Begin time     : Wed Dec  4 03:33:25 2019
Begin rpmdb    : 307:6c41312854623ca5d949e51faa4fef289e20f91d
End time       :            03:33:42 2019 (17 seconds)
End rpmdb      : 355:8d69d977579cbfe95784e897827e8897b00a5260
User           :  <ansible>
Return-Code    : Success
Command Line   : -d 2 -y install tmux traceroute wget vim-enhanced psmisc bind-utils unzip lsof pv bzip2 htop bash-completion tar epel-release rsyslog
Transaction performed with:
    Updated       rpm-4.11.3-40.el7.x86_64                      @anaconda
    Updated       yum-3.4.3-163.el7.centos.noarch               @anaconda
    Updated       yum-plugin-fastestmirror-1.1.31-52.el7.noarch @anaconda
Packages Altered:
    Dep-Install GeoIP-1.5.0-14.el7.x86_64                  @base
    Install     bash-completion-1:2.1-6.el7.noarch         @base
    Dep-Install bind-libs-32:9.11.4-9.P2.el7.x86_64        @base
    Dep-Install bind-libs-lite-32:9.11.4-9.P2.el7.x86_64   @base
    Dep-Install bind-license-32:9.11.4-9.P2.el7.noarch     @base
    Install     bind-utils-32:9.11.4-9.P2.el7.x86_64       @base
    Install     bzip2-1.0.6-13.el7.x86_64                  @base
    Updated     epel-release-7-11.noarch                   @extras
    Update                   7-12.noarch                   @epel
    Dep-Install geoipupdate-2.5.0-1.el7.x86_64             @base
    Dep-Install gpm-libs-1.20.7-6.el7.x86_64               @base
    Install     htop-2.2.0-3.el7.x86_64                    @epel
    Dep-Install libevent-2.0.21-4.el7.x86_64               @base
    Install     lsof-4.87-6.el7.x86_64                     @base
    Dep-Install perl-4:5.16.3-294.el7_6.x86_64             @base
    Dep-Install perl-Carp-1.26-244.el7.noarch              @base
    Dep-Install perl-Encode-2.51-7.el7.x86_64              @base
    Dep-Install perl-Exporter-5.68-3.el7.noarch            @base
    Dep-Install perl-File-Path-2.09-2.el7.noarch           @base
    Dep-Install perl-File-Temp-0.23.01-3.el7.noarch        @base
    Dep-Install perl-Filter-1.49-3.el7.x86_64              @base
    Dep-Install perl-Getopt-Long-2.40-3.el7.noarch         @base
    Dep-Install perl-HTTP-Tiny-0.033-3.el7.noarch          @base
    Dep-Install perl-PathTools-3.40-5.el7.x86_64           @base
    Dep-Install perl-Pod-Escapes-1:1.04-294.el7_6.noarch   @base
    Dep-Install perl-Pod-Perldoc-3.20-4.el7.noarch         @base
    Dep-Install perl-Pod-Simple-1:3.28-4.el7.noarch        @base
    Dep-Install perl-Pod-Usage-1.63-3.el7.noarch           @base
    Dep-Install perl-Scalar-List-Utils-1.27-248.el7.x86_64 @base
    Dep-Install perl-Socket-2.010-4.el7.x86_64             @base
    Dep-Install perl-Storable-2.45-3.el7.x86_64            @base
    Dep-Install perl-Text-ParseWords-3.29-4.el7.noarch     @base
    Dep-Install perl-Time-HiRes-4:1.9725-3.el7.x86_64      @base
    Dep-Install perl-Time-Local-1.2300-2.el7.noarch        @base
    Dep-Install perl-constant-1.27-2.el7.noarch            @base
    Dep-Install perl-libs-4:5.16.3-294.el7_6.x86_64        @base
    Dep-Install perl-macros-4:5.16.3-294.el7_6.x86_64      @base
    Dep-Install perl-parent-1:0.225-244.el7.noarch         @base
    Dep-Install perl-podlators-2.5.1-3.el7.noarch          @base
    Dep-Install perl-threads-1.87-4.el7.x86_64             @base
    Dep-Install perl-threads-shared-1.43-6.el7.x86_64      @base
    Install     psmisc-22.20-16.el7.x86_64                 @base
    Install     pv-1.4.6-1.el7.x86_64                      @epel
    Install     tmux-1.8-4.el7.x86_64                      @base
    Install     traceroute-3:2.0.22-2.el7.x86_64           @base
    Install     unzip-6.0-20.el7.x86_64                    @base
    Dep-Install vim-common-2:7.4.629-6.el7.x86_64          @base
    Install     vim-enhanced-2:7.4.629-6.el7.x86_64        @base
    Dep-Install vim-filesystem-2:7.4.629-6.el7.x86_64      @base
    Install     wget-1.14-18.el7_6.1.x86_64                @base
history info

You can also specify the ID number of a transaction you are interested in, e.g. yum history info 7

View the full question and any other answers on Server Fault.

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My answer:

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