Tag: dump

elasticsearch data migration elasticdump

Directory of series articles Chapter 1 es cluster construction Chapter 2 Basic Operation Commands of ES Cluster Chapter 3 es implements encryption authentication based on search-guard plug-in Chapter 4 es commonly used plug-ins Article directory Table of Contents of Series Articles Preface 1. What is elasticdump? 2. Install the elasticdump tool 1.Offline installation 2. Online […]

Regarding the Youshuang Linux high-performance server programming code list 13-4 Segmentation fault (core dumped) error reporting problem

I tried various adapted or official codes, but they were all wrong. Finally, I found that the problem lies in this line of code. sub_process[pid] = user_count; This line of code assigns the pid to the array, but how big is the array? The code is as follows sub_process = new int[PROCESS_LIMIT]; You will find […]

Linux debugging (objdump/strace/strings)

Directory 1. Linux debugging (objdump/strace/strings) 1.1. Check the system glibc version number 1.2. View dependencies in so/bin 1.3. Reasons for debugging bin errors 1.4. View the string in so/bin 1. Linux debugging (objdump/strace/strings) 1.1. Check the system glibc version number 1. The first type # ldd –version ldd (Ubuntu GLIBC 2.27-3ubuntu1) 2.27 Copyright (C) 2018 […]

Cross-compile your own TcpDump tool

Foreword Everyone must have heard or used network packet capture tools, such as the powerful WireShark, which supports Window and Linux platforms; and the TcpDump command line tool for Linux systems. As an embedded development engineer, during the development process, it is inevitable that there will be no graphical interface. Under the Linux system, you […]

Practical analysis of dump and strace commands causing watchdog problems caused by keystore deadlock

1. Problem description Recently, a system stuck problem occurred. It is speculated that a watchdog appears in system_server. Looking at the watchdog file, it is PackageManager stuck in the KeyStore.clearUid() interface: —– pid 1091 at 2023-10-26 09:40:10 —– Cmd line: system_server ABI: ‘arm64’ “PackageManager” sysTid=1352 #00 pc 000000000006e1c4 /system/lib64/libc.so (__ioctl + 4) #01 pc 00000000000290d0 […]

[3D Image Segmentation] 3D Image Segmentation 6 based on Pytorch (data preprocessing LIDC-IDRI tag xml tag dump and tag count statistics)

Since the previous LUNA16 data processing method compiled by the author of Bizhan was too cumbersome, this article will make a new sorting of the LUNA16 data. The final data and form are similar. of. However, the main difference is that the code logic is relatively simple and easy to understand. For learning about the […]

MySQL data mysqldump logical backup method

Directory 1. Why back up 2. Things that need to be paid attention to when backing up MySQL data 3. MySQL backup types 4. Introduction to MySQL backup tools 5. mysqldump logical backup – recommended to be used first 1. Common backup options 2. Backup table 3. Backup library (key point) 4.Restore database and tables […]

Linux commands (11) – tcpdump

? ? Article directory 1. Introduction to commands 2. How to use 3. Command options 4. Basic grammar and usage 1. Display ASCII string 2. Capture data of specific protocols 3. Capture data from a specific host 4. Write the captured data to a file 5. Line buffering mode 5. Understanding the output of tcpdump […]