Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8
Configuring basic system settings
A guide to configuring basic system settings in Red Hat Enterprise Linux 8
Last Updated: 2021-09-22
Red Hat Enterprise Linux 8 Configuring basic system settings
A guide to configuring basic system settings in Red Hat Enterprise Linux 8
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Abstract
This document describes basics of system administration on Red Hat Enterprise Linux 8. The title focuses on: basic tasks that a system administrator needs to do just after the operating system has been successfully installed, installing software with yum, using systemd for service management, managing users, groups and file permissions, using chrony to configure NTP, working with Python 3 and others.
Table of Contents
Table of Contents
.M. A. .K. I.N. .G. .O. P. .E. N. . S. .O. U. .R. C. .E. .M. .O. R. .E. .IN. .C. L. .U. S. .IV. .E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9. . . . . . . . . . . . .
.P.R. O. .V. .ID. .IN. .G. .F. .E.E. D. .B. A. .C. K. . O. .N. .R. .E.D. .H. .A.T. .D. O. .C. .U. M. .E. .N.T. .A.T. I.O. .N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0. . . . . . . . . . . . .
.C.H. .A.P. .T.E. R. .1...G. .E.T. T. .IN. .G. .S. T. .A. R. .T.E. D. . .W. .IT. .H. .R.H. .E.L. .S.Y. .S.T. E. .M. .R. O. .L. .E.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.1. . . . . . . . . . . .
1.1. INTRODUCTION TO RHEL SYSTEM ROLES
11
1.2. RHEL SYSTEM ROLES TERMINOLOGY
11
1.3. APPLYING A ROLE
12
1.4. ADDITIONAL RESOURCES
14
.C.H. .A.P. .T.E. R. .2. . C. .H. .A.N. .G. I.N. .G. .B. A. .S.I.C. .E.N. .V.I.R.O. .N. .M. E. .N. T. . S. .E.T. T. .IN. .G. .S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5. . . . . . . . . . . . .
2.1. CONFIGURING THE DATE AND TIME
15
2.1.1. Displaying the current date and time
15
2.2. CONFIGURING THE SYSTEM LOCALE
15
2.3. CONFIGURING THE KEYBOARD LAYOUT
16
2.4. CHANGING THE LANGUAGE USING DESKTOP GUI
17
2.5. ADDITIONAL RESOURCES
19
.C.H. .A.P. .T.E. R. .3. . C. .O. .N. F. .IG. .U. .R.I.N. G. . A. .N. .D. .M. A. .N. .A.G. .IN. .G. .N. .E.T. .W. .O. R. .K. .A.C. .C.E. .S.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.0. . . . . . . . . . . . .
3.1. CONFIGURING THE NETWORK AND HOST NAME IN THE GRAPHICAL INSTALLATION MODE
20
3.2. CONFIGURING A STATIC ETHERNET CONNECTION USING NMCLI
21
3.3. ADDING A CONNECTION PROFILE USING NMTUI
24
3.4. MANAGING NETWORKING IN THE RHEL 8 WEB CONSOLE
26
3.5. MANAGING NETWORKING USING RHEL SYSTEM ROLES
27
3.6. ADDITIONAL RESOURCES
28
.C.H. .A.P. .T.E. R. .4. . .R.E. G. .I.S.T. E. .R.I.N. G. . .T.H. .E. S. .Y.S. .T.E. M. . .A.N. .D. .M. .A. N. .A. G. .I.N. G. . S. .U. B. .S.C. .R.I.P.T. .IO. .N. .S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.9. . . . . . . . . . . . .
4.1. REGISTERING THE SYSTEM AFTER THE INSTALLATION
29
4.2. REGISTERING SUBSCRIPTIONS WITH CREDENTIALS IN THE WEB CONSOLE
30
4.3. REGISTERING A SYSTEM USING RED HAT ACCOUNT ON GNOME
33
4.4. REGISTERING A SYSTEM USING AN ACTIVATION KEY ON GNOME
34
4.5. REGISTERING RHEL 8.4 USING THE INSTALLER GUI
34
.C.H. .A.P. .T.E. R. .5. . M. . A. .K. I.N. G. . .S.Y. S. .T.E. .M. D. . .S.E. R. .V.I.C. E. .S. .S.T.A. .R.T. .A. T. . B. .O. .O. T. .T. I.M. .E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.6. . . . . . . . . . . . .
5.1. ENABLING OR DISABLING THE SERVICES
36
5.2. MANAGING SERVICES IN THE RHEL 8 WEB CONSOLE
36
.C.H. .A.P. .T.E. R. .6. . .C.O. .N. F. .IG. .U. .R.I.N. G. . S. .Y. S. .T.E. M. . .S.E. C. .U. .R.I.T.Y. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.9. . . . . . . . . . . . .
6.1. ENABLING THE FIREWALLD SERVICE
39
6.2. MANAGING FIREWALL IN THE RHEL 8 WEB CONSOLE
40
6.3. MANAGING BASIC SELINUX SETTINGS
40
6.4. ENSURING THE REQUIRED STATE OF SELINUX
41
6.5. SWITCHING SELINUX MODES IN THE RHEL 8 WEB CONSOLE
42
6.6. ADDITIONAL RESOURCES
42
.C.H. .A.P. .T.E. R. .7. . G. .E. .T.T. I.N. G. . .S.T. A. .R. T. .E.D. .W. .I.T.H. .M. .A. N. .A. .G. I.N. .G. .U. S. .E.R. .A. C. .C. O. .U. .N. T. .S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.4. . . . . . . . . . . . .
7.1. MANAGING ACCOUNTS AND GROUPS USING COMMAND LINE TOOLS
44
7.2. SYSTEM USER ACCOUNTS MANAGED IN THE WEB CONSOLE
45
7.3. ADDING NEW ACCOUNTS USING THE WEB CONSOLE
45
.C.H. .A.P. .T.E. R. .8. . .D.U. .M. .P.I.N.G. . A. . C. .R. A. .S.H. .E.D. .K. .E.R. N. .E. L. . F. .O. R. . L. .A.T. E. .R. .A.N. .A. L. .Y.S. I.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.7. . . . . . . . . . . . .
8.1. WHAT IS KDUMP
47
8.2. CONFIGURING KDUMP MEMORY USAGE AND TARGET LOCATION IN WEB CONSOLE
47
8.3. KDUMP USING RHEL SYSTEM ROLES
49
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