Post Install tuning for CentOS 7 in VirtualBOX
VirtualBox Linux additions
VirtualBox Linux Additions
mount /dev/cdrom /mnt/ ./VBoxLinuxAdditions.run umount /mnt
CentOS console resolution
/etc/default/grub
vi /etc/default/grub GRUB_CMDLINE_LINUX=".. quiet vga=792" GRUB_DISABLE_RECOVERY="true" GRUB_GFXMODE=1024x768x32 GRUB_GFXPAYLOAD_LINUX=keep grub2-mkconfig -o /boot/grub2/grub.cfg
Adding dates to bash history by adding next strings to /etc/bashrc
/etc/bashrc
HISTTIMEFORMAT="%Y-%m-%d %T " HISTSIZE=20000 HISTCONTROL=ignoredups:erasedups shopt -s histappend
configure network
nmtui
nmtui
nmcli
nmcli device nmcli connection nmcli networking
SELinux
setsebool httpd_can_network_connect setsebool -P httpd_can_network_connect 1
disable selinux
cat /etc/sysconfig/selinux sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/sysconfig/selinux sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config reboot
chkconfig/services
systemctl list-units systemctl enable httpd
systemctl stop httpd.service systemctl start httpd.service systemctl restart httpd.service systemctl reload httpd.service systemctl status httpd
IPTables
Permanently open Port 80/TCP
firewall-cmd --zone=public --add-port=80/tcp --permanent firewall-cmd --reload
Reboot by user
systemctl reboot -i
Switch from Java 7 to Java 8
yum install java-1.8.0-openjdk alternatives --config java
Add host to known_hosts
ssh-keyscan -H www.liutyi.info >> ~/.ssh/known_hosts
Start using NFS Server
yum install nfs-utils systemctl enable rpcbind systemctl enable nfs-server systemctl start rpcbind systemctl start nfs-server systemctl start rpc-statd systemctl start nfs-idmapd vi /etc/exports exportfs -r
Clean boot partition
# leave only two latest kernels package-cleanup --oldkernels --count=2