[DEBUG] Linux resolve error code ‘DB version too old ……, expected …… for domain implicit_files!’

Error Code:

# useradd <account name>
DB version too old ......, expected ...... for domain implicit_files!
......

Or:

# chage -l <user name>
DB version too old ......, expected ...... for domain implicit_files!
......

Solution:

Step One: Create /etc/sssd/sssd.conf file

# vim /etc/sssd/sssd.conf

Add follow lines:

[sssd]
enable_files_domain = true

Step Two: Give /etc/sssd/sssd.conf file properly privilege

# chmod 600 /etc/sssd/sssd.conf

Step Three: Restart sssd service

# systemctl restart sssd

Reference:

https://access.redhat.com/solutions/7031304

[步骤] Linux 网络的设置 (禁用 IPv6) (openSUSE & SLES 版)

内容一:显示 IPv6 是否启用

1.1 方法一:通过 ifconfig 命令实现

# ifconfig

1.2 方法二:通过 ip 命令实现

# ip a s

(补充:如果出现了 inet6 则 IPv6 是激活的)

1.3 方法三:通过 sysctl -a 命令实现

# sysctl -a |grep -i ipv6|grep -i disable
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.eth0.disable_ipv6 = 1
net.ipv6.conf.eth1.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

(补充:从输出结果中可以看出 IPv6 已经被禁用)

内容二:临时禁用 IPv6

# sudo echo 1 > /proc/sys/net/ipv6/conf/ens32/disable_ipv6 


补充:
1) 这里的 ens32 是要禁用 IPv6 的网卡名称
2) 系统或者网卡重启后禁用失效

内容三:永久禁用 IPv6

# yast lan

Global Options –> IPv6 Protocol Settings –> 取消勾选

[排错] openSUSE & SLES 解决开机后 wicked 不能设置 IP 地址

报错代码:

开机后 wicked 不能自动设置 IP 地址

# cat /var/log/messages
......
...... wickedd-nanny[1218]: device eth0: call to org.opensuse.Network.Protocol.IPv6.changeProtocol() failed: General failure
...... wickedd-nanny[1218]: eth0: failed to bring up device, still continuing
......
...... lo              up
...... eth0            device-not-running
...... Finished wicked managed network interfaces.
......

解决方法一:将 wicked 软件降级到较低版本

(步骤略)

解决方法二:取消 ipv6.disable=1 参数

2.1 修改 /etc/default/grub 文件

# /etc/default/grub

删除以下内容:

......
......ipv6.disable=1......
......

2.2 使刚刚修改的配置生效

# grub2-mkconfig -o /boot/grub2/grub.cfg

2.3 检查刚刚设置的配置

# grep "^\s*ipv6.disable" /boot/grub2/grub.cfg