91 lines
3.3 KiB
Bash
Executable File
91 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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BUILD_MODE=''
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if [ "$1" == "--rt" ]; then
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BUILD_MODE="rt"
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fi
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if [ "$1" == "--std" ]; then
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BUILD_MODE="std"
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fi
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# Setup boot directory for syslinux configuration (/boot/extlinux.conf)
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ln -s $(ls /boot/vmlinuz-*.x86_64 | head -1) /boot/vmlinuz
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ln -s $(ls /boot/initramfs-*.x86_64.img | head -1) /boot/initramfs.img
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# Setup root and wrsroot users
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usermod -p $(openssl passwd -1 root) root
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useradd -p $(openssl passwd -1 wrsroot) wrsroot
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# Enable SUDO access for wrsroot
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echo "wrsroot ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
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# Enable remote root login to permit automated tools to run privileged commands
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sed -i 's%^#\(PermitRootLogin \)%\1%' /etc/ssh/sshd_config
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sed -i 's#^\(PermitRootLogin \).*#\1yes#' /etc/ssh/sshd_config
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# Enable password login to permit automated tools to run commands
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sed -i 's%^#\(PasswordAuthentication \)%\1%' /etc/ssh/sshd_config
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sed -i 's#^\(PasswordAuthentication \).*#\1yes#' /etc/ssh/sshd_config
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# Disable PAM authentication
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sed -i 's#^\(UsePAM \).*#\1no#' /etc/ssh/sshd_config
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# Prevent cloud_init for reverting our changes
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sed -i 's#^\(ssh_pwauth:\).*#\1 1#' /etc/cloud/cloud.cfg
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sed -i 's#^\(disable_root:\).*#\1 0#' /etc/cloud/cloud.cfg
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# Setup SSHD to mark packets for QoS processing in the host (this seems to
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# be broken in our version of SSHd so equivalent iptables rules are being
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# added to compensate.
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echo "IPQoS cs7" >> /etc/ssh/sshd_config
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# Disable reverse path filtering to permit traffic testing from
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# foreign routes.
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sed -i 's#^\(net.ipv4.conf.*.rp_filter=\).*#\10#' /etc/sysctl.conf
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# Change /etc/rc.local to touch a file to indicate that the init has
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# completed. This is required by the AVS vbenchmark tool so that it knows
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# that the VM is ready to run. This was added because VM instances take a
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# long time (2-3 minutes) to resize their filesystem when run on a system with
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# HDD instead of SSD.
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chmod +x /etc/rc.d/rc.local
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echo "touch /var/run/.init-complete" >> /etc/rc.local
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if [ "$BUILD_MODE" == "rt" ]; then
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# Adjust system tuning knobs during init when using rt kernel (CGTS-7047)
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echo "echo 1 > /sys/devices/virtual/workqueue/cpumask" >> /etc/rc.local
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echo "echo 1 > /sys/bus/workqueue/devices/writeback/cpumask" >> /etc/rc.local
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echo "echo -1 > /proc/sys/kernel/sched_rt_runtime_us" >> /etc/rc.local
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echo "echo 0 > /proc/sys/kernel/timer_migration" >> /etc/rc.local
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echo "echo 10 > /proc/sys/vm/stat_interval" >> /etc/rc.local
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fi
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# Disable audit service by default
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# With this enabled, it causes system delays when running at maximum
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# capacity that impacts the traffic processing enough to cause unclean
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# traffic runs when doing benchmark tests.
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systemctl disable auditd
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if [ "$BUILD_MODE" == "rt" ]; then
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# Additional services to disable on rt guest (CGTS-7047)
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systemctl disable polkit.service
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systemctl disable tuned.service
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fi
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# Clean the yum cache. We don't want to maintain it on the guest file system.
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yum clean all
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# update /etc/rsyslog.conf to have OmitLocalLogging off
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sed -i 's#OmitLocalLogging on#OmitLocalLogging off#g' /etc/rsyslog.conf
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# select correct kernel and initrd
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if [ "$BUILD_MODE" == "rt" ]; then
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PATTERN=$(rpm -q --qf '%{VERSION}-%{RELEASE}' kernel-rt)
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else
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PATTERN=$(rpm -q --qf '%{VERSION}-%{RELEASE}' kernel)
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fi
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cd /boot
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rm -f vmlinuz initramfs.img
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ln -s $(ls -1 vmlinuz-$PATTERN*) vmlinuz
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ln -s $(ls -1 initramfs-$PATTERN*img) initramfs.img
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