The dhclient binary missing from Red Hat CoreOS 4.6 images

Solution Verified - Updated -

Issue

  • In following version of Red Hat CoreOS 4.6, dhclient binary exists.
sh-4.4# cat /etc/os-release 
NAME="Red Hat Enterprise Linux CoreOS"
VERSION="46.82.202009222340-0"
VERSION_ID="4.6"
OPENSHIFT_VERSION="4.6"
RHEL_VERSION="8.2"
PRETTY_NAME="Red Hat Enterprise Linux CoreOS 46.82.202009222340-0 (Ootpa)"
ID="rhcos"
ID_LIKE="rhel fedora"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:redhat:enterprise_linux:8::coreos"
HOME_URL="https://www.redhat.com/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="OpenShift Container Platform"
REDHAT_BUGZILLA_PRODUCT_VERSION="4.6"
REDHAT_SUPPORT_PRODUCT="OpenShift Container Platform"
REDHAT_SUPPORT_PRODUCT_VERSION="4.6"
OSTREE_VERSION='46.82.202009222340-0'
  • Whereas in the following, dhclient is missing.
sh-4.4# cat /etc/os-release
NAME="Red Hat Enterprise Linux CoreOS"
VERSION="46.82.202011061621-0"
VERSION_ID="4.6"
OPENSHIFT_VERSION="4.6"
RHEL_VERSION="8.2"
PRETTY_NAME="Red Hat Enterprise Linux CoreOS 46.82.202011061621-0 (Ootpa)"
ID="rhcos"
ID_LIKE="rhel fedora"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:redhat:enterprise_linux:8::coreos"
HOME_URL="https://www.redhat.com/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="OpenShift Container Platform"
REDHAT_BUGZILLA_PRODUCT_VERSION="4.6"
REDHAT_SUPPORT_PRODUCT="OpenShift Container Platform"
REDHAT_SUPPORT_PRODUCT_VERSION="4.6"
OSTREE_VERSION='46.82.202011061621-0'
  • Why is it removed? What is it's replacement in Red Hat CoreOS 4.6 to obtain the DHCP IP address?

Environment

  • Red Hat OpenShift Container Platform 4.6
    • Red Hat CoreOS 4.6

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