System basics | |||
Task | RHEL5 | RHEL6 | RHEL7 |
View subscription information | /etc/sysconfig/rhn/systemid | /etc/sysconfig/rhn/systemid subscription-manager identity |
subscription-manager identity |
Configure subscription | rhn_register subscription-manager 1 |
rhn_register rhnreg_ks subscription-manager |
subscription-manager2 rhn_register 3 |
View RHEL version information | /etc/redhat-release | ||
View system profile | sosreport dmidecode hwbrowser |
sosreport dmidecode lstopo lscpu |
Basic configuration
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
Graphical configuration tools | system-config-* | gnome-control-center | |
Text-based configuration tools | system-config-*-tui | ||
Configure printer | system-config-printer | ||
Configure network | system-config-network | nmcli nmtui nm-connection-editor |
|
Configure system language | system-config-language | localectl | |
Configure time and date | system-config-date date |
timedatectl date |
|
Synchronize time and date | ntpdate /etc/ntp.conf |
timedatectl /etc/chrony.conf ntpdate |
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Configure keyboard | system-config-keyboard | localectl | |
Configure SSH | /etc/ssh/ssh_config /etc/ssh/sshd_config ~/.ssh/config ssh-keygen |
Jobs and services
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
List all services | chkconfig --list ls /etc/init.d/ |
systemctl -at service ls /etc/systemd/system/*.service ls /usr/lib/systemd/system/*.service |
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List running services | service --status-all | systemctl -t service --state=active | |
Start/stop service | service name start service name stop |
systemctl start name.service systemctl stop name.service |
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Enable/disable service | chkconfig name on chkconfig name off |
systemctl enable name.service systemctl disable name.service |
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View service status | service name status | systemctl status name.service | |
Check if service is enabled | chkconfig name --list | systemctl is-enabled name | |
Create new service file or modify configuration | chkconfig --add | systemctl daemon-reload /etc/systemd/system/*.service |
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View run level/target | runlevel who -r |
systemctl get-default who -r |
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Change run level/target | /etc/inittab init run_level |
systemctl isolate name.target systemctl set-default |
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Configure logging | /etc/syslog.conf | /etc/rsyslog.conf | /etc/rsyslog.conf /etc/rsyslog.d/*.conf /var/log/journal systemd-journald.service |
View logs | /var/log | /var/log journalctl |
|
Configure system audit | add audit=1 to kernel cmdline auditctl /etc/audit/auditd.conf /etc/audit/audit.rules authconfig /etc/pam.d/system-auth pam_tty_audit kernel module |
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View audit output | aureport /var/log/faillog | ||
Schedule/batch tasks | cron at batch |
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Find file by name | locate | ||
Find file by characteristic | find | ||
Create archive | tar cpio zip |
Kernel, boot, and hardware
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
Single user/rescue mode | append 1 or s or init=/bin/bash to kernel cmdline | append rd.break or init=/bin/bash to kernel cmdline | |
Shut down system | shutdown | ||
Power off system | poweroff | poweroff systemctl poweroff |
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Halt system | halt | halt systemctl halt |
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Reboot system | reboot | reboot systemctl reboot |
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Configure default run level/target | /etc/inittab | systemctl set-default | |
Configure GRUB bootloader | /boot/grub/grub.conf | /etc/default/grub grub2-mkconfig grub-set-default |
|
Configure kernel module | modprobe | ||
View hardware configured | hwbrowser | lshw (in EPEL) | |
Configure hardware device | udev | ||
View kernel parameters | sysctl -a cat /proc/cmdline |
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Load kernel module | modprobe | ||
Remove kernel module | modprobe -r | ||
View kernel version | rpm -q kernel uname -r |
Software management
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
Install software | yum install yum groupinstall |
yum install yum group install |
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View software info | yum info yum groupinfo |
yum info yum group info |
|
Update software | yum update | ||
Upgrade software | yum upgrade | ||
Configure software repository | subscription-manager repos /etc/yum.repos.d/*.repo |
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Find package owning file | rpm -qf filename yum provides filename-glob |
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View software version | rpm -q packagename | ||
View installed software | rpm -qa yum list installed |
User management
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
Graphical user management | system-config-users | ||
Create user account | useradd | ||
Delete user account | userdel | ||
View/change user account details | usermod /etc/passwd vipw id |
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Create user group | groupadd | ||
Delete user group | groupdel | ||
Change group details | groupmod /etc/group |
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Change user password | passwd | ||
Change user permissions | usermod visudo |
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Change group permissions | groupmod visudo |
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Change password policy | chage | ||
View user sessions | w |
File systems, volumes, and disks
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
Default file system | ext3 | ext4 | xfs |
Create/modify disk partitions | fdisk parted |
fdisk gdisk parted ssm create |
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Format disk partition | mkfs.filesystem_type (ext4, xfs) mkswap |
mkfs.filesystem_type (ext4, xfs) mkswap ssm create |
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Defragment disk space | copy data to new file system fsck (look for ‘non-contiguous inodes‘) |
copy data to new file system fsck (look for ‘non-contiguous inodes‘) xfs_fsr |
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Mount storage | mount /etc/fstab |
mount /etc/fstab ssm mount |
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Mount and activate swap | /etc/fstab swapon -a |
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Configure static mounts | /etc/fstab | ||
View free disk space | df | ||
View logical volume info | lvdisplay lvs vgdisplay vgs pvdisplay pvs |
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Create physical volume | pvcreate | pvcreate ssm create (if backend is lvm) |
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Create volume group | vgcreate | vgcreate ssm create (if backend is lvm) |
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Create logical volume | lvcreate | lvcreate ssm create (if backend is lvm) |
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Enlarge volumes formatted with default file system | vgextend lvextend resize2fs |
vgextend lvextend xfs_growfs ssm resize |
|
Shrink volumes formatted with default file system | resize2fs lvreduce vgreduce |
XFS cannot currently be shrunk; copy desired data to a smaller file system. | |
Check/repair file system | fsck | fsck ssm check |
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View NFS share | showmount -e mount |
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Configure NFS share | /etc/exports service nfs reload |
/etc/exports systemctl reload nfs.service |
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Configure on-demand auto-mounts | /etc/auto.master.d/*.autofs /etc/auto.* |
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Change file permissions | chmod chown chgrp umask (future file creation) |
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Change file attributes | chattr | ||
Change access control list | setfacl |
Networking
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
Configure name resolution | /etc/hosts /etc/resolv.conf |
/etc/hosts /etc/resolv.conf nmcli con mod |
|
Configure hostname | /etc/sysconfig/network | hostnamectl /etc/hostname nmtui |
|
View network interface info | ip addr ifconfig brctl |
ip addr nmcli dev show teamdctl brctl bridge |
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Configure network interface | /etc/sysconfig/network-scripts/ifcfg-* | /etc/sysconfig/network-scripts/ifcfg-* nmcli con [add|mod|edit] nmtui nm-connection-editor |
|
View routes | ip route | ||
Configure routes | ip route add system-config-network /etc/sysconfig/route-iface |
ip route add nmcli nmtui nm-connection-editor /etc/sysconfig/route-iface |
|
Configure firewall | iptables and ip6tables /etc/sysconfig/ip*tables |
iptables and ip6tables /etc/sysconfig/ip*tables system-config-firewall |
firewall-cmd firewall-config |
View ports/sockets | ss lsof netstat |
ss lsof |
Security and identity
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
Configure system security | /etc/selinux/config chcon restorecon semanage setsebool system-config-selinux |
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Report on system security | sealert | ||
LDAP, SSSD, Kerberos | authconfig authconfig-tui authconfig-gtk |
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Network users | getent |
Resource management
Task | RHEL5 | RHEL6 | RHEL7 |
---|---|---|---|
Trace system calls | strace | ||
Trace library calls | ltrace | ||
Change process priority | nice renice |
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Change process run location | taskset | ||
Kill a process | kill pkill killall |
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View system usage | top ps sar iostat netstat vmstat mpstat numastat |
top ps sar iostat netstat ss vmstat mpstat numastat tuna |
top ps sar iostat ss vmstat mpstat numastat tuna |
View disk usage | df | df iostat |
时间: 2024-10-14 13:00:16