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Operation and Maintenance

How to view GitLab logs under CentOS

A complete guide to viewing GitLab logs under CentOS system This article will guide you how to view various GitLab logs in CentOS system, including main logs, exception logs, and other related logs. Please note that the log file path may vary depending on the GitLab version and installation method. If the following path does not exist, please check the GitLab installation directory and configuration files. 1. View the main GitLab log Use the following command to view the main log file of the GitLabRails application: Command: sudocat/var/log/gitlab/gitlab-rails/production.log This command will display product

Apr 14, 2025 pm 06:18 PM

centos git ai

How to update PyTorch to the latest version on CentOS

Updating PyTorch to the latest version on CentOS can follow the following steps: Method 1: Updating pip with pip: First make sure your pip is the latest version, because older versions of pip may not be able to properly install the latest version of PyTorch. pipinstall--upgradepip uninstalls old version of PyTorch (if installed): pipuninstalltorchtorchvisiontorchaudio installation latest

Apr 14, 2025 pm 06:15 PM

python centos

How to set Zookeeper permissions on CentOS

To safely configure ZooKeeper permissions on CentOS system, you need to follow the following steps: Step 1: Install ZooKeeper First, confirm that ZooKeeper is installed. If not installed, use the following command to install: sudoyumininstallzookeeper-serverSecond step: Configure ZooKeeper to edit ZooKeeper configuration file /etc/zookeeper/conf/zoo.cfg to ensure the configuration is correct. The following is the example configuration: tickTime=2000dataDir=/var/lib/zookeeperclientPort

Apr 14, 2025 pm 06:12 PM

linux centos 防火墙配置权限验证

How to troubleshoot CentOS MongoDB

MongoDB troubleshooting guide for CentOS System This article provides a systematic step to help you effectively troubleshoot MongoDB database problems on CentOS system. Follow the steps below to make the diagnosis step by step and carefully check the results of each step. 1. Check the system log First, check whether there are error messages related to MongoDB in the system log: Use the journalctl-xe command to view the system log and filter the entries containing the keyword "mongodb". Check the MongoDB log file /var/log/mongodb/mongod.log directly, which usually contains detailed error information and operation records. 2. Check

Apr 14, 2025 pm 06:09 PM

linux centos mongodb 工具

What are the versions of centos firewalls?

CentOS7 and above use firewalld as a firewall management tool by default, while CentOS6 and below use iptables. The following is a related introduction: Firewalld firewall installation for CentOS7 and above: If firewalld has not been installed yet, you can use the following command to install: sudoyumininstallfirewalld. Start and set up the power-on self-start: The commands for starting the firewalld service and setting the power-on self-start are: sud

Apr 14, 2025 pm 06:06 PM

linux centos 工具

How to do Node.js CentOS security settings

Security is crucial to deploy Node.js applications on CentOS systems. This article provides an overview of best practices, covering application configuration and system-level security measures. Recommended installation method for Node.js installation and configuration: Use EPEL repository or NVM (NodeVersionManager) to install Node.js to ensure the latest stable version and security patches. Verify installation: Use node-v and npm-v commands to verify that the installation is successful. Application security configuration avoids root permissions: Run Node.js applications as non-root users to reduce security risks. Update npm package: update project dependencies regularly, use npmaudit or

Apr 14, 2025 pm 06:03 PM

linux centos 工具日志监控防火墙配置数据丢失

CentOS HDFS performance tuning tips

CentOS Platform Hadoop Distributed File System (HDFS) Performance Optimization Guide Optimizing HDFS Performance is a multi-faceted issue, and multiple parameters need to be adjusted for specific situations. The following are some key optimization strategies: 1. Memory management adjusts the NameNode and DataNode memory configuration: reasonably configure the HADOOP_NAMENODE_OPTS and HADOOP_DATANODE_OPTS environment variables according to the actual memory size of the server to optimize memory utilization. Enable large page memory: For high memory consumption applications (such as HDFS), enabling large page memory can reduce memory page allocation and management overhead and improve efficiency. 2. Disk I/O optimization uses high-speed storage

Apr 14, 2025 pm 06:00 PM

centos 压缩技术

centos postgresql resource monitoring

Detailed explanation of PostgreSQL database resource monitoring scheme under CentOS system This article introduces a variety of methods to monitor PostgreSQL database resources on CentOS system, helping you to discover and solve potential performance problems in a timely manner. 1. Use PostgreSQL built-in tools and views PostgreSQL comes with rich tools and views, which can be directly used for performance and status monitoring: pg_stat_activity: View the currently active connection and query information. pg_stat_statements: Collect SQL statement statistics and analyze query performance bottlenecks. pg_stat_database: provides database-level statistics, such as transaction count, cache hit

Apr 14, 2025 pm 05:57 PM

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How to backup and restore system in CentOS

CentOS System Backup and Recovery Guide: Detailed explanation of three common methods This article will introduce three common methods for system backup and recovery in CentOS system, and provide detailed command examples and precautions to help you choose the most suitable backup plan. Method 1: Use the tar command to backup and restore the tar command is an efficient archiving tool that can package files and directories into compressed files. Backup: tarcvpzfbackup.tgz--exclude=/proc--exclude=/lost found-exclude=/mnt--exclude=/sys/This command backs up the entire system to the name backup.tg

Apr 14, 2025 pm 05:54 PM

centos 工具数据丢失

Things to note when upgrading weblogic on centos

The key points of WebLogic update and upgrade under CentOS system are explained in detail. Perform WebLogic updates or upgrade operations on CentOS system. Be sure to pay attention to the following key things to ensure the smooth upgrade process and the system runs stably: System compatibility verification: Before upgrading, please carefully verify whether the target WebLogic version is compatible with your CentOS system version. For example, the CentOS7.9 system needs to match the corresponding WebLogic installation package. Dependency checking: Make sure that all WebLogic dependencies (including Java runtime environment, necessary library files, etc.) are correctly installed and version compatible. Configuration file adjustment: During the upgrade process, WebLogic

Apr 14, 2025 pm 05:51 PM

oracle centos 日志监控数据丢失系统版本

How to upgrade CentOS HDFS

HDFS upgrade guide under CentOS system: Ensure data security and smooth upgrade of HDFS involves steps such as system update, dependency installation, configuration adjustment and service restart. This article provides detailed upgrade steps and precautions to help you complete HDFS upgrades safely and efficiently. Detailed explanation of the upgrade steps Confirm the CentOS version: Use the following command to view the current CentOS version: cat/etc/centos-release data backup is crucial: Be sure to back up all HDFS data before any upgrade operation. System update: Use the following command to update the system software package: sudoyumupdate-y to install the necessary components: install the necessary software

Apr 14, 2025 pm 05:48 PM

centos 数据丢失

MiniOpen Centos compatibility

MinIO Object Storage: High-performance deployment under CentOS system MinIO is a high-performance, distributed object storage system developed based on the Go language, compatible with AmazonS3. It supports a variety of client languages, including Java, Python, JavaScript, and Go. This article will briefly introduce the installation and compatibility of MinIO on CentOS systems. CentOS version compatibility MinIO has been verified on multiple CentOS versions, including but not limited to: CentOS7.9: Provides a complete installation guide covering cluster configuration, environment preparation, configuration file settings, disk partitioning, and MinI

Apr 14, 2025 pm 05:45 PM

python centos

What are the configuration steps for CentOS HDFS

Detailed steps for deploying Hadoop distributed file system (HDFS) on CentOS system: 1. Preparation to install Java: Make sure that the system has the appropriate JDK version installed and configure the JAVA_HOME environment variable. Install Hadoop: Download the corresponding version of Hadoop distribution package and unzip it to the specified directory (for example /usr/local/hadoop). 2. Environment configuration setting environment variables: Edit /etc/profile file and add the following environment variables: exportJAVA_HOME=/path/to/your/jdkeexportPATH=$JAVA_HOME/

Apr 14, 2025 pm 05:42 PM

centos 子网

How to choose a GitLab database in CentOS

When installing and configuring GitLab on a CentOS system, the choice of database is crucial. GitLab is compatible with multiple databases, but PostgreSQL and MySQL (or MariaDB) are most commonly used. This article analyzes database selection factors and provides detailed installation and configuration steps. Database Selection Guide When choosing a database, you need to consider the following factors: PostgreSQL: GitLab's default database is powerful, has high scalability, supports complex queries and transaction processing, and is suitable for large application scenarios. MySQL/MariaDB: a popular relational database widely used in Web applications, with stable and reliable performance. MongoDB:NoSQL database, specializes in

Apr 14, 2025 pm 05:39 PM

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