The level is limited and the problem is in a hurry. Please forgive me for any mistakes or omissions. In addition to CHSCA: 1. Change the password at startup Esce [in 1 mode] enterb [boot] setenforce0 {Change Password in tolerant mode} passwdreboot2.serviceNetworkManagerstop; chkconfigNetworkManageroff
The level is limited and the problem is in a hurry. Please forgive me for any mistakes or omissions.
CHSCA
Question:
1. Change the password at startup
Esc
E
[Enter 1 mode] enter
B [boot]
Setenforce 0 {Change Password in tolerant mode}
Passwd
Reboot
2. service NetworkManager stop; chkconfig NetworkManager off
3. service iptables stop; chkconfig iptables off
# Network settings
Hostname: station.domainX0.example.com
IP: 192.168.0.X
NETMASK: 255.255.255.0
GATEWAY: 192.168.0.254
1 'vim/etc/sysconfig/network
2 'vim/etc/sysconfig/network-scripts/ifcfg-eth0
3 'vim/etc/resolv. conf [DNS]
4 'vim/etc/hosts
# Configure yum Source
Specify to ftp: // 192.168.0.254/pub/rhel6/dvd/Server
1 'CD/etc/yum. repos. d/if there are other, mv dvd. repo gls. repo ../
2 'vim exam. repo [edit yum source]
[Server]
Name = Server
Baseurl = ftp: // 192.168.0.254/pub/rhel6/dvd/Server
Enable = 1
Gpgcheck = 0
3 'yum list {yum clean all clear cache}
# Lvm resizing
Will "/home lv" extend to 300 M (no more than 30 M error)
1 'lvdisplay
2 'lvextend-L 300 M/dev/vol0/home [target path to be resized]
3 'resize2fs/dev/vol0/home
4 'lvdisplay
# Lvm reduce to 200 M
1 'lvdisplay
2 'umount/home
3 'fsck-f/dev/vol0/home
4 'resize2fs/dev/vol0/home 200 M
5 'lvreduce-L 200 M/home/vol0/home
6 'mount/home
# Group Management
Add a group named "admin"
1 'groupadd-g 2000 admin
2 'grep admin/etc/group
# User management
Add user "tom", ask its home directory is/home/tommy
Add user "mike", ask its uid is 800, its affiliated groups is "admin"
Add user "selina", can't land shell
Passwd: RedHat
1 'useradd-d/home/tommy tom
2 'useradd-u 800-G admin mike usermod-aG admin add new group
3 'useradd-s/sbin/nologin selina
4' for UNAME in tom mike
> Do
> Echo "redhat" | passwd -- stdin $ UNAME
> Done
# File Permission
Copy file/etc/passwd to/var/tmp
Owners is root, group: admin, the members of admin can write in it
Others without any access
1 'cp/etc/passwd/var/tmp
2 'chgrp admin passwd & chown root: admin passwd
3 'chmod 660 passwd