CentOS 查找包依赖

背景

    CentOS 7.3 系统上突然从出了个 iscsiadm 命令，确认：是哪个时间，安装什么包时把这个 iscsiadm 安装上了。

查看哪个 package 包含了 iscsiadm 命令

[root@node ~]$ sudo yum provides iscsiadm
iscsi-initiator-utils-6.2.0.873-35.el7.i686 : iSCSI daemon and utility programs
Repo        : base
Matched from:
Filename    : /usr/sbin/iscsiadm

查看yum操作历史

[root@node ~]# yum history list
Loaded plugins: fastestmirror
ID     | Login user               | Date and time    | Action(s)      | Altered
-------------------------------------------------------------------------------
    11 | root <root>              | 2017-08-15 14:10 | Erase          |    7   
    10 | root <root>              | 2017-08-10 11:53 | Install        |    1   
     9 | root <root>              | 2017-08-02 10:35 | Install        |    3   
     8 | root <root>              | 2017-08-02 10:32 | I, U           |  105 EE
     7 | root <root>              | 2017-08-02 10:25 | Install        |    1   
     6 | root <root>              | 2017-06-20 15:55 | Install        |    1   
     5 | root <root>              | 2017-06-02 09:18 | Install        |    1   
     4 | root <root>              | 2017-06-02 09:16 | Install        |    1   
     3 | root <root>              | 2017-05-18 16:42 | Install        |    5   
     2 | root <root>              | 2017-05-07 09:49 | Install        |   18 P<
     1 | System <unset>           | 2017-04-10 05:14 | Install        |  297 > 
history list

 查看哪个操作安装了iscsi-initiator-utils

    一个个查看 yum 每次安装的详情，最后在发现在安装 libguestfs package 时 Packages Altered 有安装 iscsi-initiator-utils。

[root@node ~]# yum history info 8|less
Loaded plugins: fastestmirror
Transaction ID : 8
Begin time     : Wed Aug  2 10:32:24 2017
Begin rpmdb    : 420:14f62c2a6db5374b48003fad8a4575bfac1952cf
End time       :            10:32:56 2017 (32 seconds)
End rpmdb      : 523:90edbd527403d27a62cf1716cf25dcf5c874763c
User           : root <root>
Return-Code    : Success
Command Line   : install libguestfs
Transaction performed with:
    Installed     rpm-4.11.3-21.el7.x86_64                      @anaconda
    Installed     yum-3.4.3-150.el7.centos.noarch               @anaconda
    Installed     yum-plugin-fastestmirror-1.1.31-40.el7.noarch @anaconda
Packages Altered:
    Dep-Install attr-2.4.46-12.el7.x86_64                               @base
    Dep-Install iscsi-initiator-utils-6.2.0.873-35.el7.i686             @base
...

    使用 yum deplist libguestfs 确认确实是这样。

确认具体哪个 package 直接依赖iscsi-initiator-utils

    yum deplist 只能查看扁平依赖，无法查看依赖树。

    repoquery --tree-requires <package-name> 则可以查看包的直接依赖。

    因 libguestfs 的依赖树太大，这里以 bash 的依赖树举例。

# repoquery --tree-requires bash
bash-4.1.2-15.el6_4.x86_64 [cmd line]
 \_  glibc-2.12-1.132.el6_5.4.i686 [1: rtld(GNU_HASH)]
 |   \_  basesystem-10.0-4.el6.noarch [1: basesystem]
 |   |   \_  filesystem-2.4.30-3.el6.x86_64 [1: filesystem]
 |   |   |   \_  setup-2.8.14-20.el6_4.1.noarch [1: setup >= 2.5.4-1]
 |   |   \_  setup-2.8.14-20.el6_4.1.noarch [1: setup]
 |   \_  glibc-common-2.12-1.132.el6_5.4.x86_64 [1: glibc-common = 2.12-1.132.el6_5.4]
 |   |   \_  bash-4.1.2-15.el6_4.x86_64 [2: /bin/bash, /bin/sh]
 |   |   |   \_  glibc-2.12-1.132.el6_5.4.i686 [1: rtld(GNU_HASH)]
 |   |   |   \_  glibc-2.12-1.132.el6_5.4.x86_64 [4: libc.so.6(GLIBC_2.4)(64bit), libdl.so.2()(64bit), libdl.so.2(GLIBC_2.2.5)(64bit), rtld(GNU_HASH)]
 |   |   |   \_  ncurses-libs-5.7-3.20090208.el6.i686 [1: ncurses-libs]
 |   |   |   \_  ncurses-libs-5.7-3.20090208.el6.x86_64 [2: libtinfo.so.5()(64bit), ncurses-libs]
 |   |   \_  glibc-2.12-1.132.el6_5.4.i686 [1: glibc = 2.12-1.132.el6_5.4]

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