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centos7/ks.cfg

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+# based on work by Jeff Geerling - https://github.com/geerlingguy/packer-boxes/blob/master/centos7/http/ks.cfg
+install
+cdrom
+lang en_US.UTF-8
+keyboard us
+network --bootproto=dhcp
+rootpw Packer
+firewall --disabled
+selinux --permissive
+timezone UTC
+bootloader --location=mbr
+text
+skipx
+zerombr
+clearpart --all --initlabel
+# systems will often run better with a bit of swap
+part / --fstype xfs --grow --size=6144
+part swap --fstype swap --size=512
+auth --enableshadow --passalgo=sha512 --kickstart
+firstboot --disabled
+eula --agreed
+services --enabled=NetworkManager,sshd
+reboot
+
+%packages --ignoremissing --excludedocs
+@Core
+openssh-clients
+openssh-server
+sudo
+net-tools
+curl
+
+# unnecessary firmware
+-aic94xx-firmware
+-atmel-firmware
+-b43-openfwwf
+-bfa-firmware
+-ipw2100-firmware
+-ipw2200-firmware
+-ivtv-firmware
+-iwl100-firmware
+-iwl1000-firmware
+-iwl3945-firmware
+-iwl4965-firmware
+-iwl5000-firmware
+-iwl5150-firmware
+-iwl6000-firmware
+-iwl6000g2a-firmware
+-iwl6050-firmware
+-libertas-usb8388-firmware
+-ql2100-firmware
+-ql2200-firmware
+-ql23xx-firmware
+-ql2400-firmware
+-ql2500-firmware
+-rt61pci-firmware
+-rt73usb-firmware
+-xorg-x11-drv-ati-firmware
+-zd1211-firmware
+%end
+
+%post
+yum update -y
+
+# set virtual-guest as default profile for tuned
+echo "virtual-guest" > /etc/tuned/active_profile
+
+# Because memory is scarce resource in most cloud/virt environments,
+# and because this impedes forensics, we are differing from the Fedora
+# default of having /tmp on tmpfs.
+echo "Disabling tmpfs for /tmp."
+systemctl mask tmp.mount
+
+cat <<EOL > /etc/sysconfig/kernel
+# UPDATEDEFAULT specifies if new-kernel-pkg should make
+# new kernels the default
+UPDATEDEFAULT=yes
+
+# DEFAULTKERNEL specifies the default kernel package type
+DEFAULTKERNEL=kernel
+EOL
+
+# make sure firstboot doesn't start
+echo "RUN_FIRSTBOOT=NO" > /etc/sysconfig/firstboot
+
+echo "Fixing SELinux contexts."
+touch /var/log/cron
+touch /var/log/boot.log
+mkdir -p /var/cache/yum
+/usr/sbin/fixfiles -R -a restore
+
+yum -y remove firewalld
+
+sed -i "s/^.*requiretty/#Defaults requiretty/" /etc/sudoers
+
+yum clean all
+%end