Server management with Linux commands (10 Marks)
Q1 Answer: efficienc
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Task 1: Server management with Linux commands (10 Marks)
Q1 Answer: efficiency and security. For the repeating request, I can write the instructions as a general code script, and I’ll just do it next time. But the GUI you want to repeat it over and over again. In security part. For example, when you typing password in terminal, the password will be not shown. in GUI, password shown as ‘*’ symbols, others can guess the password.
Q2 Answer:
1)lsof: lsof means List Open Files by each process.
lsof is the command in Linux for displaying opened files for each process. it displays command, user name, pid, type of device and size of file or process etc.
lsof syntax: lsof +［options］+ filename
a: list open files exist process;
c < process name > : list open files specified process;
-g: list the details of the GID process;
- d < file >: list takes up the file number process;
d < directory >: list file directory is opened;
D < directory >: recursive list file directory is opened;
N < directory >: list the files that use NFS;
-I < condition >: list the qualifying processes. (4, 6, protocol, port, @ip)
-p< process number >: lists the files opened by the specified process number;
-u: list the details of the UID process;
-h: display help information;
- v: shows version information.
(figure 4 mtr screenshot)
Task 2: Server management Systems (30 Marks)
Answer: I choose RED ENTERPRISE LINUX topic
Background and Introduction: Red hat enterprise Linux is a high-performance operating system that has provided reliable value to the IT environment in the last version. As one of the most trusted IT platforms in the world. In 2003, Red Hat Red Hat Linux Advanced Server will be renamed the “Red Hat Enterprise Linux AS”, Two variants are added, Red Hat Enterprise Linux ES and Red Hat Enterprise Linux WS.
Tech and feature:
Scalability and performance
The red hat enterprise Linux 6 design provides high performance and scalability without compromising data integrity. It can be extended to 4,096 CPUs and 64TB of RAM, laying a solid foundation for supporting future generations of hardware. Within this broad framework, the red hat enterprise Linux 6 provides support for a variety of network infrastructure, such as In niband and Ethernet, and support the storage infrastructure, such as FCoE and iSCSI, support traditional NAS, SAN and DAS devices at the same time.
The red hat enterprise Linux has also provided excellent performance, which extends from the desktop to the workstation, from the blade to the hangar environment, from the single-cpu system to the biggest SMP servers and mainframes. As the hardware upgrade continues to provide more processing and storage capacity, the red hat enterprise Linux allows its clients to choose lateral and vertical expansion strategies and platform architecture to meet their business demands, and to make the most of these advances.
flexibility
Red hat enterprise Linux provides a full range of options for their clients to customize their operating system for their unique environment. Red hat enterprise Linux includes new defining feature elements, allowing you to easily select different properties, from the basis of the runtime environment to the minimal install, to the properties of various options, including the storage option system management, graphical interface, and utilities. In addition to support a large number of infrastructure options, red hat enterprise Linux also includes a complete set of open source applications. By supporting the application, including and infrastructure to the database from a Web development framework, red hat enterprise Linux installation can meet the needs of a large amount of workload.
security
Red hat enterprise Linux security with its core features - the Linux (SELinux) security enhancements. SELinux is jointly developed by Red Hat and the NSA, providing a powerful and flexible MAC framework for executive access control and multi-level security. The support for SELinux has been integrated into all parts of the platform, including virtualization. The virtual machine operating system, regardless of the operating system, provides critical virtual machine isolation. Through the comprehensive application of strategy and comprehensive review of system privilege, Red Hat Enterprise Linux 6 use SELinux is easier to use than before.
Target platform
Red hat enterprise Linux has been deployed in important and safety applications in global area, financial institutions, big company and Military level organization. The first version of red hat enterprise Linux “red hat Linux advanced server” appeared on the market.
Advantage and disadvantage.
Advantages:
· Provides high performance, flexibility and security
· Certified by leading software and hardware manufacturers
· Can be extended from workstations to servers and mainframes
Disadvantages: Technical support and update services are required to pay.
Conclusion:
Red Hat® Enterprise Linux® is a mature and stable technology platform with multiple functions. It is designed to provide enterprises with a solid guarantee for deploying new applications, virtualizing environments, and creating secure hybrid clouds.
[1]
Z. S.-p. H.-z. ZHANG Peng, Communication and Engineering Institute of Air Force Engineering, shanghai.
[2]
W. R. Stevens, B. Fenner 和 A. M. Rudoff, Unix Network Programming: the Sockets networking API, Addison-Wesley Professional, 2013.
[3]
“ “netstat man page (notes section,” 8 2014. [online]. Available: http://net-tools.sourceforge.net/man/netstat.8.html. [date: 5 4 2018].
[4]
M. Tripod, Cisco Router Configuration and Troubleshooting, 2000.
[5]
“2013 Red Hat Summit”, 2013.
[6]
N. McAllister, “Oracle: Get your Red Hat Linux patches from us, it’s easier. New service let
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