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113 lines
3.4 KiB
113 lines
3.4 KiB
#!/bin/sh -eux
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# should output one of 'redhat' 'centos' 'oraclelinux'
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distro="`rpm -qf --queryformat '%{NAME}' /etc/redhat-release | cut -f 1 -d '-'`"
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major_version="`sed 's/^.\+ release \([.0-9]\+\).*/\1/' /etc/redhat-release | awk -F. '{print $1}'`";
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echo "reduce the grub menu time to 1 second"
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if ! [ "$major_version" -eq 6 ]; then
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sed -i -e 's/^GRUB_TIMEOUT=[0-9]\+$/GRUB_TIMEOUT=1/' /etc/default/grub
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grub2-mkconfig -o /boot/grub2/grub.cfg
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fi
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# make sure we use dnf on EL 8+
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if [ "$major_version" -ge 8 ]; then
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pkg_cmd="dnf"
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else
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pkg_cmd="yum"
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fi
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echo "Remove development and kernel source packages"
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$pkg_cmd -y remove gcc cpp gc kernel-devel kernel-headers glibc-devel elfutils-libelf-devel glibc-headers kernel-devel kernel-headers
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if [ "$major_version" -ge 8 ]; then
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echo "remove orphaned packages"
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dnf -y autoremove
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echo "Remove previous kernels that preserved for rollbacks"
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dnf -y remove -y $(dnf repoquery --installonly --latest-limit=-1 -q)
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else
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echo "Remove previous kernels that preserved for rollbacks"
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if ! command -v package-cleanup >/dev/null 2>&1; then
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yum -y install yum-utils
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fi
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package-cleanup --oldkernels --count=1 -y
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fi
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# Avoid ~200 meg firmware package we don't need
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# this cannot be done in the KS file so we do it here
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echo "Removing extra firmware packages"
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$pkg_cmd -y remove linux-firmware
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if [ "$distro" != 'redhat' ]; then
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echo "clean all package cache information"
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$pkg_cmd -y clean all --enablerepo=\*;
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fi
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# Clean up network interface persistence
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rm -f /etc/udev/rules.d/70-persistent-net.rules;
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mkdir -p /etc/udev/rules.d/70-persistent-net.rules;
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rm -f /lib/udev/rules.d/75-persistent-net-generator.rules;
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rm -rf /dev/.udev/;
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for ndev in `ls -1 /etc/sysconfig/network-scripts/ifcfg-*`; do
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if [ "`basename $ndev`" != "ifcfg-lo" ]; then
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sed -i '/^HWADDR/d' "$ndev";
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sed -i '/^UUID/d' "$ndev";
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fi
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done
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# new-style network device naming for centos7
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if [ "$major_version" -eq 7 ]; then
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# radio off & remove all interface configration
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nmcli radio all off
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/bin/systemctl stop NetworkManager.service
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for ifcfg in `ls /etc/sysconfig/network-scripts/ifcfg-* |grep -v ifcfg-lo` ; do
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rm -f $ifcfg
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done
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rm -rf /var/lib/NetworkManager/*
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echo "==> Setup /etc/rc.d/rc.local for EL7"
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cat <<_EOF_ | cat >> /etc/rc.d/rc.local
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#BENTO-BEGIN
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LANG=C
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# delete all connection
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for con in \`nmcli -t -f uuid con\`; do
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if [ "\$con" != "" ]; then
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nmcli con del \$con
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fi
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done
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# add gateway interface connection.
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gwdev=\`nmcli dev | grep ethernet | egrep -v 'unmanaged' | head -n 1 | awk '{print \$1}'\`
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if [ "\$gwdev" != "" ]; then
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nmcli connection add type ethernet ifname \$gwdev con-name \$gwdev
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fi
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sed -i "/^#BENTO-BEGIN/,/^#BENTO-END/d" /etc/rc.d/rc.local
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chmod -x /etc/rc.d/rc.local
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#BENTO-END
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_EOF_
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chmod +x /etc/rc.d/rc.local
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fi
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echo "truncate any logs that have built up during the install"
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find /var/log -type f -exec truncate --size=0 {} \;
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echo "remove the install log"
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rm -f /root/anaconda-ks.cfg /root/original-ks.cfg
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echo "remove the contents of /tmp and /var/tmp"
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rm -rf /tmp/* /var/tmp/*
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if [ "$major_version" -ge 7 ]; then
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echo "Force a new random seed to be generated"
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rm -f /var/lib/systemd/random-seed
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echo "Wipe netplan machine-id (DUID) so machines get unique ID generated on boot"
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truncate -s 0 /etc/machine-id
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fi
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echo "Clear the history so our install commands aren't there"
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rm -f /root/.wget-hsts
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export HISTSIZE=0
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