Error unpacking rpm package chkconfig

Trying to update some CentOS servers to in this case CentOS 7.4 i stumbled onto a problem there it was not possible to perform a update on chkconfig.

[root@moln.dalesjo.net ~]# yum update -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.zetup.net
 * epel: mirror.zetup.net
 * extras: mirror.zetup.net
 * updates: mirror.zetup.net
Resolving Dependencies
--> Running transaction check
---> Package chkconfig.x86_64 0:1.7.2-1.el7 will be updated
---> Package chkconfig.x86_64 0:1.7.4-1.el7 will be an update
--> Finished Dependency Resolution

Dependencies Resolved

====================================================================================================================================================================================================================================================
 Package Arch Version Repository Size
====================================================================================================================================================================================================================================================
Updating:
 chkconfig x86_64 1.7.4-1.el7 base 181 k

Transaction Summary
====================================================================================================================================================================================================================================================
Upgrade 1 Package

Total download size: 181 k
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
chkconfig-1.7.4-1.el7.x86_64.rpm | 181 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
 Updating : chkconfig-1.7.4-1.el7.x86_64 1/2
Error unpacking rpm package chkconfig-1.7.4-1.el7.x86_64
error: unpacking of archive failed on file /etc/init.d: cpio: rename
chkconfig-1.7.2-1.el7.x86_64 was supposed to be removed but is not!
 Verifying : chkconfig-1.7.2-1.el7.x86_64 1/2
 Verifying : chkconfig-1.7.4-1.el7.x86_64 2/2

Failed:
 chkconfig.x86_64 0:1.7.2-1.el7 chkconfig.x86_64 0:1.7.4-1.el7

Complete!

The problem occured because /etc/init.d was a directory instead of a softlink to /etc/rc.d/init.d/. To fix it, simply do

mv /etc/init.d/* /etc/rc.d/init.d/
rm /etc/init.d -r
ln -s /etc/rc.d/init.d/ /etc/init.d