rollback glibc for CentOS 7.3.1611 to version included with 7.2.1511

glibc.sh

#!/bin/bash

# script to roll GLIBC back on CentOS 7.3 to version below
# no warranty of any kind, use at your own risk.

VER="-2.17-106.el7_2.6"

LIBS=$(echo -n  $(yum list installed|grep glibc|awk ' { print $1 } '|cut -d '.' -f1)|sed "s/ /${VER} /g")${VER}

echo ${LIBS}
exit

function testrc {
    "$@"
    local status=$?
    if [ $status -ne 0 ]; then
        echo "error with $1"
	echo "exiting"
	exit 1
    fi
    return $status
}


# enable the requisite repos
testrc yum-config-manager --enable C7.2.1511-base   >/dev/null 2>&1
testrc yum-config-manager --enable C7.2.1511-updates >/dev/null 2>&1

# downgrade the glibc
testrc yum downgrade ${LIBS}

# diable the repos
testrc yum-config-manager --disable C7.2.1511-base   >/dev/null 2>&1
testrc yum-config-manager --disable C7.2.1511-updates >/dev/null 2>&1

# display enabled repos (optional)
# testrc yum repolist enabled