CentOS7にIPv6、KDUMP、SELinuxが無効にするメモ
1.KDUMPが無効
# systemctl stop kdump
# systemctl disable kdump
# reboot
2.SELinuxが無効
# cp /etc/selinux/config /etc/selinux/config.org
# vim /etc/selinux/config
修正前
SELINUX=enforcing
修正後
SELINUX=disabled
# reboot
3.IPv6が無効
# vim /etc/sysctl.d/disable_ipv6.conf
# sysctl -p /etc/sysctl.d/disable_ipv6.conf
修正内容
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
4.ファイアウォールの停止
# systemctl stop firewalld
# systemctl disable firewalld