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When working with Google Cloud Storage (GCS) via gsutil, most file operations
run smoothly. However, occasional cryptic error messages may appear that leave
you scratching your head. One such error is:
Semaphore released too many times MiB] 99% Done
CommandException: 1 files/objects could not be copied/removed.
make: *** [Makefile …Posted on in system_administration
Backing up systems efficiently is crucial for data integrity and space
management. Using hard links with rsync is a common strategy to conserve disk
space. However, macOS can sometimes present challenges with hard links,
especially when dealing with external drives. This article revisits the issue of
hard links not working …
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Kubernetes has become the de facto standard for container orchestration, enabling organizations to deploy, manage, and scale containerized applications efficiently. Originally developed by Google, Kubernetes is now maintained by the Cloud Native Computing Foundation (CNCF) and has a vibrant, growing community. In this comprehensive guide, we will explore the core …
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In the modern software development landscape, DevOps has become a crucial practice for ensuring rapid delivery of high-quality software. However, with the increasing pace of development, ensuring security throughout the DevOps pipeline is more important than ever. This article will cover best practices and tools for implementing a secure DevOps …
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In the world of software development, Continuous Integration (CI) and Continuous Deployment (CD) have become essential practices for delivering high-quality software quickly and efficiently. Jenkins, an open-source automation server, is one of the most popular tools for implementing CI/CD pipelines. This article will guide you through setting up Jenkins …
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This guide is based on practical notes taken while tuning DRBD (Distributed Replicated Block Device) on a Linux system. DRBD is a software-based, shared-nothing, replicated storage solution for mirroring the content of block devices (hard disks, partitions, logical volumes, etc.) between servers. Proper tuning of DRBD can significantly improve performance …
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DRBD, which stands for Distributed Replicated Block Device, is a software-based, shared-nothing, replicated storage solution for mirroring the content of block devices (such as hard disks, partitions, logical volumes, etc.) between servers. It is often used to build high-availability (HA) clusters and is integrated into the Linux kernel, making it …
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To enable RFC 1323 Window Scaling and increase the TCP window size to 1 MB on
FreeBSD, add the following lines to /etc/sysctl.conf and reboot.
net.inet.tcp.rfc1323=1
kern.ipc.maxsockbuf=16777216
net.inet.tcp.sendspace=1048576
net.inet.tcp.recvspace=1048576
You can make these …
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Note: Although this is a continuation of the TCP Performance Tuning article series, it's also valuable as a standalone reference.
This list includes a mix of both well-established and newer algorithms, reflecting the ongoing advancements in TCP congestion control research and deployment. Algorithms like CUBIC and BBR are particularly notable …
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Encountering the "cache has broken packages, exiting" error while using apt or
apt-get in Ubuntu or Debian can be frustrating, but it's often fixable. This
error occurs when the package manager finds inconsistencies in its internal
cache, preventing it from functioning properly.
This guide will delve into various methods to …
