


What to learn about Linux cloud computing operation and maintenance?
What to learn about Linux cloud computing operation and maintenance?
If you want to become a qualified operation and maintenance engineer, you need to master a lot of skills. Linux operation and maintenance engineers pay attention to breadth. Here is an introduction to the learning content of Linux cloud computing operation and maintenance:
1. Linux system basics - the basic knowledge of Linux, the use of commands, and core knowledge points such as users and permissions
2. Linux system management and advancement-Linux from processes, resources, tasks, software, Software package, disk, etc. management methods
3. Common Linux enterprise services - common enterprise-level services such as DNS, FTP, HTTP, mail
4. Linux enterprise-level security principles and prevention techniques and network and security - Linux security architecture, security threat model, encryption, decryption and other principles, common attacks and prevention sections
5, Shell programming gate and advanced - basic usage and advanced of Shell script, from basic to proficient , you need to learn some common enterprise-level script usage
6. MySQL application principles and management gate-Mysql installation, management, authorization, addition, deletion, modification and query
7.http service proxy cache acceleration-http level Protocol application, cache, web service nginx
8, enterprise-level load cluster-enterprise-level 4-layer load balancing LVS, and 7-layer load balancing nginx and haproxy applications
9, enterprise-level available Cluster-available cluster principle, realizing the available cluster with keepalived as the core, as well as master-slave high availability, dual-master
10, operation and maintenance monitoring zabbix-enterprise-level monitoring system and the function and architecture of zabbix streaming open source monitoring system
11. Cloud computing operation and maintenance automation - ansible, puppet and other operation and maintenance automation solutions
12. WEB service architecture - WEB service architecture, JSP system, tomcat, CDN, caching principle , Stress testing, evaluation
13, Large-scale interconnected cluster architecture and practical cases-LB cluster: nginx, Haproxy, LVS HA cluster, dynamic and static separation
14, MySQL DBA practical skills and optimization-database Parameter optimization, sharding of databases and tables, backup solutions, data recovery strategies, master-slave replication, read-write separation, connection pool and sharding technology, MHA, etc.
15, enterprise-level cloud computing Openstack-Keystone, Glance, Nova Core components, network modules, block storage services, etc.
16. Enterprise-level data Hadoop operation and maintenance practice-column database HBase basic principles, installation configuration and applications, Zookeeper cluster construction hadoop implementation Namenode can
17. Enterprise-level virtualization KVM actual combat-KVM environment: KVM installation, configuration and application
18. NoSQL enterprise-level applications-Nosql applications, such as redis, MongoDB replication, cluster-level applications
19. Enterprise-level log collection system ELK actual combat - massive data log collection system Elasticsearch Logstash kibana application
20. Sustainable integration - Jenkins github enterprise-level application
21. Virtualization container Docker-Linux lightweight virtualization Docker, Docker principle, installation, configuration and application
22, Enterprise-level K8S actual combat-component functions, installation, configuration, enterprise-level application scenarios and common fault analysis
23. Practical Linux system tuning - Comprehensive explanation of Linux system tuning from memory, CPU, process scheduling, disk IO, network parameters, etc.
24. Python programming basics - python installation, logical judgment, modules Use etc.
Relevant learning recommendations: linux video tutorial
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The five core components of the Linux operating system are: 1. Kernel, 2. System libraries, 3. System tools, 4. System services, 5. File system. These components work together to ensure the stable and efficient operation of the system, and together form a powerful and flexible operating system.

The five core elements of Linux are: 1. Kernel, 2. Command line interface, 3. File system, 4. Package management, 5. Community and open source. Together, these elements define the nature and functionality of Linux.

Linux user management and security can be achieved through the following steps: 1. Create users and groups, using commands such as sudouseradd-m-gdevelopers-s/bin/bashjohn. 2. Bulkly create users and set password policies, using the for loop and chpasswd commands. 3. Check and fix common errors, home directory and shell settings. 4. Implement best practices such as strong cryptographic policies, regular audits and the principle of minimum authority. 5. Optimize performance, use sudo and adjust PAM module configuration. Through these methods, users can be effectively managed and system security can be improved.

The core operations of Linux file system and process management include file system management and process control. 1) File system operations include creating, deleting, copying and moving files or directories, using commands such as mkdir, rmdir, cp and mv. 2) Process management involves starting, monitoring and killing processes, using commands such as ./my_script.sh&, top and kill.

Shell scripts are powerful tools for automated execution of commands in Linux systems. 1) The shell script executes commands line by line through the interpreter to process variable substitution and conditional judgment. 2) The basic usage includes backup operations, such as using the tar command to back up the directory. 3) Advanced usage involves the use of functions and case statements to manage services. 4) Debugging skills include using set-x to enable debugging mode and set-e to exit when the command fails. 5) Performance optimization is recommended to avoid subshells, use arrays and optimization loops.

Linux is a Unix-based multi-user, multi-tasking operating system that emphasizes simplicity, modularity and openness. Its core functions include: file system: organized in a tree structure, supports multiple file systems such as ext4, XFS, Btrfs, and use df-T to view file system types. Process management: View the process through the ps command, manage the process using PID, involving priority settings and signal processing. Network configuration: Flexible setting of IP addresses and managing network services, and use sudoipaddradd to configure IP. These features are applied in real-life operations through basic commands and advanced script automation, improving efficiency and reducing errors.

The methods to enter Linux maintenance mode include: 1. Edit the GRUB configuration file, add "single" or "1" parameters and update the GRUB configuration; 2. Edit the startup parameters in the GRUB menu, add "single" or "1". Exit maintenance mode only requires restarting the system. With these steps, you can quickly enter maintenance mode when needed and exit safely, ensuring system stability and security.

The core components of Linux include kernel, shell, file system, process management and memory management. 1) Kernel management system resources, 2) shell provides user interaction interface, 3) file system supports multiple formats, 4) Process management is implemented through system calls such as fork, and 5) memory management uses virtual memory technology.


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