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- What are Linux operations?
- The core of the Linux operating system is its command line interface, which can perform various operations through the command line. 1. File and directory operations use ls, cd, mkdir, rm and other commands to manage files and directories. 2. User and permission management ensures system security and resource allocation through useradd, passwd, chmod and other commands. 3. Process management uses ps, kill and other commands to monitor and control system processes. 4. Network operations include ping, ifconfig, ssh and other commands to configure and manage network connections. 5. System monitoring and maintenance use commands such as top, df, du to understand the system's operating status and resource usage.
- LINUX . ssh 509 2025-04-13 00:20:31
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- How to build a Hadoop development environment on Debian
- This guide details how to build a Hadoop development environment on a Debian system. 1. Install Java Development Kit (JDK) First, install OpenJDK: sudoaptupdatesudoaptininstallopenjdk-11-jdk-yConfigure JAVA_HOME environment variable: sudonano/etc/environment at the end of the file (adjust the path according to the actual JDK version): JAVA_HOME="/usr/lib/jvm/java-11-openjdk-amd64" Save and exit, and then execute: source/etc
- Linux Operation and Maintenance . ssh 581 2025-04-12 23:54:02
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- How to prevent data loss and recycling in Debian
- In Debian systems, preventing data loss and recycling can be achieved through the following methods: Data backup is used to back up the entire system using the tar command: a compressed backup containing the entire system files, configuration files and user data can be created. Incremental backup using rsync command: rsync is a fast and flexible backup tool that supports both local and remote backups, suitable for periodic backups and synchronized files. Use duplicity for encrypted incremental backup: duplicity provides incremental backup with encryption function to ensure the security of backup data. Use C
- Linux Operation and Maintenance . ssh 973 2025-04-12 22:33:01
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- How to recycle network resources in the Debian system
- This article introduces how to efficiently recycle network resources in the Debian system, covering service management, interface control, IP address release, cache cleaning, resource monitoring and network configuration optimization. Disable unnecessary network services: Use the systemctl command to manage system services. For example, disabling the SSH service: sudosystemctlstopsshsudosystemctldisablessh other services (such as FTP, Telnet) can also use similar methods. Close idle network interface: If a network interface (such as eth0) is no longer in use, close it: sudoiplinkseteth0do
- Linux Operation and Maintenance . ssh 814 2025-04-12 21:24:01
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- How is GitLab permission management on Debian
- This article describes how to manage GitLab permissions on Debian systems. GitLab adopts a role-based access control (RBAC) model, allowing granular control of users and groups' access to projects and resources. Permission management steps: User and group creation: Create users and groups through gitlab-cli or GitLab Web interface and assign them roles (visitor, reporter, developer, owner). Role and permission assignment: On the project "Settings" > "Members" page, assign the corresponding role to each member to determine their access rights to the project (such as code submission, merge request, etc.). SSH key configuration: It is recommended to configure an SSH key to securely access GitLab. Generate a key
- Linux Operation and Maintenance . ssh 574 2025-04-12 20:27:01
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- How to improve data security in Debian Hadoop
- To enhance the data security of DebianHadoop cluster, we need to work together in multiple aspects, covering key links such as system maintenance, user permission management, data encryption, access control, log audit and security policy formulation. The following are some specific implementation steps: 1. System security maintenance is updated in a timely manner: execute aptupdate and aptupgrade commands regularly to ensure that system patches are updated in a timely manner and protect against known vulnerabilities. 2. The principle of minimum permissions for user and permission management: Create an ordinary user and give sudo permissions to avoid using root users directly. SSH key authentication: Configure SSH key pair authentication, disable root remote login and empty password login. 3. Data encryption
- Linux Operation and Maintenance . ssh 679 2025-04-12 20:21:01
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- How Debian ensures GitLab's data security
- Data security is crucial to deploy GitLab on Debian systems. This article outlines the key strategies and measures to ensure the security of GitLab data: Strengthen password policy: Use the PAM module to implement strict password policies, enforce the combination requirements of minimum password length, numbers, upper and lower case letters and special characters, and improve password strength. Secure SSH configuration: Force authentication of SSH key pairs to eliminate password login and reduce security risks. Prohibit root users from logging in remotely through SSH to enhance system security. Strictly limit login of empty passwords to increase the difficulty of cracking. Fine firewall management: rationally configure the iptables firewall and only open necessary ports (such as HTTP)
- Linux Operation and Maintenance . ssh 574 2025-04-12 20:15:01
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- What are the best software for computer operation and maintenance mac
- Essential artifacts for operation and maintenance engineers under Mac: Basics: 1. Terminal emulator: iTerm2, 2. Text editor: Sublime Text; Operation and maintenance: 3. Package manager: Homebrew, 4. Remote connection: Termius, 5. Database management: Sequel Pro; Monitoring: 6. Monitoring and log analysis: Depending on the operation and maintenance system; Suggestions: 7. Proficient in using shortcut keys, 8. Keep the system updated, 9. Back up data regularly.
- Mac OS . ssh 307 2025-04-12 16:48:01
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- Computer operation and maintenance post mac software recommendation
- Software tools for Mac operation and maintenance engineers to improve efficiency include: terminal (Terminal/iTerm2), command line enhancement (Oh My Zsh/Fish shell), remote connection (Termius), code editor (Vim/VS Code), monitoring tools (Prometheus/Grafana), and other practical tools (Wireshark, Disk Utility, Finder, Git). It is recommended to pay attention to practicality and integration, and give priority to software that has been tested in practice. Proficient in command lines is a necessary skill for operation and maintenance, and software is just the icing on the cake. Continuous learning and improving skills are the key to becoming an excellent operation and maintenance engineer.
- Mac OS . ssh 329 2025-04-12 16:42:01
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- Recommended software for Mac in operation and maintenance
- Mac operation and maintenance tools are recommended, creating an efficient working environment: Terminal emulator: iTerm2, enhance efficiency and beautiful remote connection tool: Termius, secure management of multiple server code editor: VS Code, support multiple languages and rich extension file manager: enhance Finder skills, improve efficiency monitoring tool: Datadog or Prometheus, promptly discover server exception log management tool: ELK stack, collect, analyze and visual log data Database management tool: Sequel Pro or Postico, graphical management database performance optimization: regular cleaning of system garbage, reasonable allocation of resources and timely update software
- Mac OS . ssh 658 2025-04-12 16:33:01
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- How to connect to a cloud server
- The steps to connect to a cloud server through an Oracle client are as follows: Create an SSH key and copy the public key to the cloud server. Configure the Oracle client and add the connection information of the cloud server to the tnsnames.ora file. Create a new database connection in the Oracle client, enter the username, password, and DSN. Click OK and verify that the connection is successful.
- Oracle . ssh 639 2025-04-11 18:51:01
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- How to log in remotely with redis
- There are two ways to log in to Redis remotely: forwarding through SSH port: After creating an SSH channel locally, connect to the local port to log in. Use Redis Sentinel: Install Redis Sentinel, configure configuration files, start Sentinel, and connect to the Redis master node after accessing the management interface.
- Redis . ssh 864 2025-04-10 20:21:02
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- How to access redis remotely
- There are two ways to access Redis remotely: connect directly over the network and use the Redis client tool to connect to the Redis server. Through an SSH tunnel, create an SSH tunnel on the local machine, mapping the ports of the remote Redis server to the local port.
- Redis . ssh 616 2025-04-10 17:42:01
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- Monitor Redis Droplet with Redis Exporter Service
- Effective monitoring of Redis databases is critical to maintaining optimal performance, identifying potential bottlenecks, and ensuring overall system reliability. Redis Exporter Service is a powerful utility designed to monitor Redis databases using Prometheus. This tutorial will guide you through the complete setup and configuration of Redis Exporter Service, ensuring you seamlessly build monitoring solutions. By studying this tutorial, you will achieve fully operational monitoring settings
- Redis . ssh 203 2025-04-10 13:36:01
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- CentOS Automation with Ansible: Infrastructure as Code
- Use Ansible to implement automated management of CentOS. The specific steps include: 1) writing a playbook to define tasks, such as installing and configuring Apache; 2) executing the playbook through the SSH protocol to ensure consistency of system configuration; 3) using conditional judgment and loop functions to handle complex scenarios; 4) optimizing performance and following best practices, such as using asynchronous tasks and optimizing inventory files.
- CentOS . ssh 685 2025-04-10 09:40:32
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