EDR: libreadline.so.5() Yum Dependency Error

Products

• Carbon Black EDR (formerly Cb Response)

Issue/Introduction

When running a 'yum update cb-enterprise' on an el6 server, the following is given
 

--> Processing Dependency: libreadline.so.5()(64bit) for package: socat-1.7.2.3- 1.el6.x86_64
--> Finished Dependency Resolution
Error: Package: socat-1.7.2.3-1.el6.x86_64 (CarbonBlack)
Requires: libreadline.so.5()(64bit)
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

 

Environment

• EDR: All Versions
• Linux Server: CentOS 6

Cause

EL6 is end of life and no longer updated by the vendor. 

Resolution

1. Backup the current Base repo

   mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2. Create a new CentOS

   touch /etc/yum.repos.d/CentOS-Base.repo

3. Edit the new CentOS-Base.repo file by adding the below to use the CentOS vault repos. 

   [base]
   name=CentOS-$releasever - Base
   baseurl=http://vault.centos.org/$releasever/os/$basearch/
   gpgcheck=1
   gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
   enabled=1
   metadata_expire=never
   
   [updates]
   name=CentOS-$releasever - Updates
   baseurl=http://vault.centos.org/$releasever/updates/$basearch/
   gpgcheck=1
   gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
   enabled=1
   metadata_expire=never
   
   [extras]
   name=CentOS-$releasever - Extras
   baseurl=http://vault.centos.org/$releasever/extras/$basearch/
   gpgcheck=1
   gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
   enabled=1
   metadata_expire=never
   
   [contrib]
   name=CentOS-$releasever - Contrib
   baseurl=http://vault.centos.org/$releasever/contrib/$basearch/
   gpgcheck=1
   gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
   enabled=0
   metadata_expire=never
   
   [centosplus]
   name=CentOS-$releasever - CentOSPlus
   baseurl=http://vault.centos.org/$releasever/centosplus/$basearch/
   gpgcheck=1
   gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
   enabled=0
   metadata_expire=never

4. Clean the cache

   yum clean all

Additional Information

• VMware Carbon Black support is not responsible for any changes made to the support of CentOS 6's vault and the ability to find dependencies hosted by the OS vendor. 
• The vaults are not updated with new security updates, but provide a way to get the supported latest versions of libraries. 
• Updating to CentOS/RHEL 7 is recommended to continue with security updates and latest versions of libraries being updated.