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Administració De Sistemes GNU Linux Mòdul4 Administració
Administració local Josep Jorba Esteve PID_00238577 GNUFDL • PID_00238577 Administració local Es garanteix el permís per a copiar, distribuir i modificar aquest document segons els termes de la GNU Free Documentation License, Version 1.3 o qualsevol altra de posterior publicada per la Free Software Foundation, sense seccions invariants ni textos de la oberta anterior o posterior. Podeu consultar els termes de la llicència a http://www.gnu.org/licenses/fdl-1.3.html. GNUFDL • PID_00238577 Administració local Índex Introducció.................................................................................................. 5 1. Eines bàsiques per a l'administrador........................................... 7 1.1. Eines gràfiques i línies de comandes .......................................... 8 1.2. Documents d'estàndards ............................................................. 10 1.3. Documentació del sistema en línia ............................................ 13 1.4. Eines de gestió de paquets .......................................................... 15 1.4.1. Paquets TGZ ................................................................... 16 1.4.2. Fedora/Red Hat: paquets RPM ....................................... 19 1.4.3. Debian: paquets DEB ..................................................... 24 1.4.4. Nous formats d'empaquetat: Snap i Flatpak .................. 28 1.5. Eines genèriques d'administració ................................................ 36 1.6. Altres eines ................................................................................. -
Storage Administration Guide Storage Administration Guide SUSE Linux Enterprise Server 12 SP4
SUSE Linux Enterprise Server 12 SP4 Storage Administration Guide Storage Administration Guide SUSE Linux Enterprise Server 12 SP4 Provides information about how to manage storage devices on a SUSE Linux Enterprise Server. Publication Date: September 24, 2021 SUSE LLC 1800 South Novell Place Provo, UT 84606 USA https://documentation.suse.com Copyright © 2006– 2021 SUSE LLC and contributors. All rights reserved. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or (at your option) version 1.3; with the Invariant Section being this copyright notice and license. A copy of the license version 1.2 is included in the section entitled “GNU Free Documentation License”. For SUSE trademarks, see https://www.suse.com/company/legal/ . All other third-party trademarks are the property of their respective owners. Trademark symbols (®, ™ etc.) denote trademarks of SUSE and its aliates. Asterisks (*) denote third-party trademarks. All information found in this book has been compiled with utmost attention to detail. However, this does not guarantee complete accuracy. Neither SUSE LLC, its aliates, the authors nor the translators shall be held liable for possible errors or the consequences thereof. Contents About This Guide xii 1 Available Documentation xii 2 Giving Feedback xiv 3 Documentation Conventions xiv 4 Product Life Cycle and Support xvi Support Statement for SUSE Linux Enterprise Server xvii • Technology Previews xviii I FILE SYSTEMS AND MOUNTING 1 1 Overview -
Trusted Docker Containers and Trusted Vms in Openstack
Trusted Docker Containers and Trusted VMs in OpenStack Raghu Yeluri Abhishek Gupta Outline o Context: Docker Security – Top Customer Asks o Intel’s Focus: Trusted Docker Containers o Who Verifies Trust ? o Reference Architecture with OpenStack o Demo o Availability o Call to Action Docker Overview in a Slide.. Docker Hub Lightweight, open source engine for creating, deploying containers Provides work flow for running, building and containerizing apps. Separates apps from where they run.; Enables Micro-services; scale by composition. Underlying building blocks: Linux kernel's namespaces (isolation) + cgroups (resource control) + .. Components of Docker Docker Engine – Runtime for running, building Docker containers. Docker Repositories(Hub) - SaaS service for sharing/managing images Docker Images (layers) Images hold Apps. Shareable snapshot of software. Container is a running instance of image. Orchestration: OpenStack, Docker Swarm, Kubernetes, Mesos, Fleet, Project Docker Layers Atomic, Lattice… Docker Security – 5 key Customer Asks 1. How do you know that the Docker Host Integrity is there? o Do you trust the Docker daemon? o Do you trust the Docker host has booted with Integrity? 2. How do you verify Docker Container Integrity o Who wrote the Docker image? Do you trust the image? Did the right Image get launched? 3. Runtime Protection of Docker Engine & Enhanced Isolation o How can Intel help with runtime Integrity? 4. Enterprise Security Features – Compliance, Manageability, Identity authentication.. Etc. 5. OpenStack as a single Control Plane for Trusted VMs and Trusted Docker Containers.. Intel’s Focus: Enable Hardware-based Integrity Assurance for Docker Containers – Trusted Docker Containers Trusted Docker Containers – 3 focus areas o Launch Integrity of Docker Host o Runtime Integrity of Docker Host o Integrity of Docker Images Today’s Focus: Integrity of Docker Host, and how to use it in OpenStack. -
Providing User Security Guarantees in Public Infrastructure Clouds
1 Providing User Security Guarantees in Public Infrastructure Clouds Nicolae Paladi, Christian Gehrmann, and Antonis Michalas Abstract—The infrastructure cloud (IaaS) service model offers improved resource flexibility and availability, where tenants – insulated from the minutiae of hardware maintenance – rent computing resources to deploy and operate complex systems. Large-scale services running on IaaS platforms demonstrate the viability of this model; nevertheless, many organizations operating on sensitive data avoid migrating operations to IaaS platforms due to security concerns. In this paper, we describe a framework for data and operation security in IaaS, consisting of protocols for a trusted launch of virtual machines and domain-based storage protection. We continue with an extensive theoretical analysis with proofs about protocol resistance against attacks in the defined threat model. The protocols allow trust to be established by remotely attesting host platform configuration prior to launching guest virtual machines and ensure confidentiality of data in remote storage, with encryption keys maintained outside of the IaaS domain. Presented experimental results demonstrate the validity and efficiency of the proposed protocols. The framework prototype was implemented on a test bed operating a public electronic health record system, showing that the proposed protocols can be integrated into existing cloud environments. Index Terms—Security; Cloud Computing; Storage Protection; Trusted Computing F 1 INTRODUCTION host level. While support data encryption at rest is offered by several cloud providers and can be configured by tenants Cloud computing has progressed from a bold vision to mas- in their VM instances, functionality and migration capabil- sive deployments in various application domains. However, ities of such solutions are severely restricted. -
Deliverable No. 5.3 Techniques to Build the Cloud Infrastructure Available to the Community
Deliverable No. 5.3 Techniques to build the cloud infrastructure available to the community Grant Agreement No.: 600841 Deliverable No.: D5.3 Deliverable Name: Techniques to build the cloud infrastructure available to the community Contractual Submission Date: 31/03/2015 Actual Submission Date: 31/03/2015 Dissemination Level PU Public X PP Restricted to other programme participants (including the Commission Services) RE Restricted to a group specified by the consortium (including the Commission Services) CO Confidential, only for members of the consortium (including the Commission Services) Grant Agreement no. 600841 D5.3 – Techniques to build the cloud infrastructure available to the community COVER AND CONTROL PAGE OF DOCUMENT Project Acronym: CHIC Project Full Name: Computational Horizons In Cancer (CHIC): Developing Meta- and Hyper-Multiscale Models and Repositories for In Silico Oncology Deliverable No.: D5.3 Document name: Techniques to build the cloud infrastructure available to the community Nature (R, P, D, O)1 R Dissemination Level (PU, PP, PU RE, CO)2 Version: 1.0 Actual Submission Date: 31/03/2015 Editor: Manolis Tsiknakis Institution: FORTH E-Mail: [email protected] ABSTRACT: This deliverable reports on the technologies, techniques and configuration needed to install, configure, maintain and run a private cloud infrastructure for productive usage. KEYWORD LIST: Cloud infrastructure, OpenStack, Eucalyptus, CloudStack, VMware vSphere, virtualization, computation, storage, security, architecture. The research leading to these results has received funding from the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement no 600841. The author is solely responsible for its content, it does not represent the opinion of the European Community and the Community is not responsible for any use that might be made of data appearing therein. -
MCP Q4`18 Release Notes Version Q4-18 Mirantis Cloud Platform Release Notes Version Q4`18
MCP Q4`18 Release Notes version q4-18 Mirantis Cloud Platform Release Notes version Q4`18 Copyright notice 2021 Mirantis, Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. No part of this publication may be reproduced in any written, electronic, recording, or photocopying form without written permission of Mirantis, Inc. Mirantis, Inc. reserves the right to modify the content of this document at any time without prior notice. Functionality described in the document may not be available at the moment. The document contains the latest information at the time of publication. Mirantis, Inc. and the Mirantis Logo are trademarks of Mirantis, Inc. and/or its affiliates in the United States an other countries. Third party trademarks, service marks, and names mentioned in this document are the properties of their respective owners. ©2021, Mirantis Inc. Page 2 Mirantis Cloud Platform Release Notes version Q4`18 What’s new This section provides the details about the features and enhancements introduced with the latest MCP release version. Note The MCP integration of the community software projects, such as OpenStack, Kubernetes, OpenContrail, and Ceph, includes the integration of the features which the MCP consumers can benefit from. Refer to the MCP Q4`18 Deployment Guide for the software features that can be deployed and managed by MCP DriveTrain. MCP DriveTrain • Encryption of sensitive data in the Reclass model • Galera verification and restoration pipeline • Jenkins version upgrade • Partitioning table for the VCP images Encryption of sensitive data in the Reclass model SECURITY Implemented the GPG encryption to protect sensitive data in the Git repositories of the Reclass model as well as the key management mechanism for secrets encryption and decryption. -
USB Composite Gadget Using CONFIG-FS on Dra7xx Devices
Application Report SPRACB5–September 2017 USB Composite Gadget Using CONFIG-FS on DRA7xx Devices RaviB ABSTRACT This application note explains how to create a USB composite gadget, network control model (NCM) and abstract control model (ACM) from the user space using Linux® CONFIG-FS on the DRA7xx platform. Contents 1 Introduction ................................................................................................................... 2 2 USB Composite Gadget Using CONFIG-FS ............................................................................. 3 3 Creating Composite Gadget From User Space.......................................................................... 4 4 References ................................................................................................................... 8 List of Figures 1 Block Diagram of USB Composite Gadget............................................................................... 3 2 Selection of CONFIGFS Through menuconfig........................................................................... 4 3 Select USB Configuration Through menuconfig......................................................................... 4 4 Composite Gadget Configuration Items as Files and Directories ..................................................... 5 5 VID, PID, and Manufacturer String Configuration ....................................................................... 6 6 Kernel Logs Show Enumeration of USB Composite Gadget by Host ................................................ 6 7 Ping -
Google Cloud Platform (GCP): Возможности И Преимущества
Google Cloud Platform (GCP): возможности и преимущества Дмитрий Новаковский, Олег Ивонин Январь 2017 Кто мы? Дмитрий Новаковский / [email protected] ● Customer Engineer @ Google Netherlands B.V. ● Поддержка продаж и разработка решений на основе GCE, GKE, GAE ● В прошлом: ○ IaaS/PaaS (OpenStack @ Mirantis) ○ SaaS (ETAdirect @ TOA Technologies/Oracle) Олег Ивонин / [email protected] ● Cloud Web Solutions Engineer @ Google Netherlands B.V. ● Разработка инструментов для анализа стоимости конфигураций и планирования архитектуры облачных решений на основе GCP ○ Google Cloud Platform Pricing Calculator и другие О чем мы расскажем? ● Часть 1: Google Cloud Platform 101 ○ Наборы облачных сервисов и их назначение ○ Преимущества на рынке ● Часть 2: Инфраструктурные сервисы GCP (IaaS/PaaS) ○ GCE - Виртуальные машины ○ GKE - Оркестрация Docker контейнеров ○ GAE - NoOps/PaaS окружения ● Часть 3: Big Data и Machine Learning инструменты GCP ● Часть 4: Примеры, итоги и вопросы/ответы Disclaimer Google Cloud Platform 4 Часть 1: Google Cloud Platform 101 Google Cloud Platform 5 Путь IT-инфраструктуры в “облако” Storage Processing Memory Network Storage Processing Memory Network Physical / Self-Service / Serverless / Colo / VPS Elastic / IaaS NoOps / PaaS Google Cloud Platform 6 Что такое Google Cloud Platform? GCP - это набор коммерческих облачных сервисов, основанных на разработках и опыте Google в для собственных продуктов: ● Google Search ● YouTube ● Google Maps ● и др. Google’s Data Research Flume MapReduce Dremel Millwheel TensorFlow GFS Megastore -
NOVA: a Log-Structured File System for Hybrid Volatile/Non
NOVA: A Log-structured File System for Hybrid Volatile/Non-volatile Main Memories Jian Xu and Steven Swanson, University of California, San Diego https://www.usenix.org/conference/fast16/technical-sessions/presentation/xu This paper is included in the Proceedings of the 14th USENIX Conference on File and Storage Technologies (FAST ’16). February 22–25, 2016 • Santa Clara, CA, USA ISBN 978-1-931971-28-7 Open access to the Proceedings of the 14th USENIX Conference on File and Storage Technologies is sponsored by USENIX NOVA: A Log-structured File System for Hybrid Volatile/Non-volatile Main Memories Jian Xu Steven Swanson University of California, San Diego Abstract Hybrid DRAM/NVMM storage systems present a host of opportunities and challenges for system designers. These sys- Fast non-volatile memories (NVMs) will soon appear on tems need to minimize software overhead if they are to fully the processor memory bus alongside DRAM. The result- exploit NVMM’s high performance and efficiently support ing hybrid memory systems will provide software with sub- more flexible access patterns, and at the same time they must microsecond, high-bandwidth access to persistent data, but provide the strong consistency guarantees that applications managing, accessing, and maintaining consistency for data require and respect the limitations of emerging memories stored in NVM raises a host of challenges. Existing file sys- (e.g., limited program cycles). tems built for spinning or solid-state disks introduce software Conventional file systems are not suitable for hybrid mem- overheads that would obscure the performance that NVMs ory systems because they are built for the performance char- should provide, but proposed file systems for NVMs either in- acteristics of disks (spinning or solid state) and rely on disks’ cur similar overheads or fail to provide the strong consistency consistency guarantees (e.g., that sector updates are atomic) guarantees that applications require. -
Firecracker: Lightweight Virtualization for Serverless Applications
Firecracker: Lightweight Virtualization for Serverless Applications Alexandru Agache, Marc Brooker, Andreea Florescu, Alexandra Iordache, Anthony Liguori, Rolf Neugebauer, Phil Piwonka, and Diana-Maria Popa, Amazon Web Services https://www.usenix.org/conference/nsdi20/presentation/agache This paper is included in the Proceedings of the 17th USENIX Symposium on Networked Systems Design and Implementation (NSDI ’20) February 25–27, 2020 • Santa Clara, CA, USA 978-1-939133-13-7 Open access to the Proceedings of the 17th USENIX Symposium on Networked Systems Design and Implementation (NSDI ’20) is sponsored by Firecracker: Lightweight Virtualization for Serverless Applications Alexandru Agache Marc Brooker Andreea Florescu Amazon Web Services Amazon Web Services Amazon Web Services Alexandra Iordache Anthony Liguori Rolf Neugebauer Amazon Web Services Amazon Web Services Amazon Web Services Phil Piwonka Diana-Maria Popa Amazon Web Services Amazon Web Services Abstract vantage over traditional server provisioning processes: mul- titenancy allows servers to be shared across a large num- Serverless containers and functions are widely used for de- ber of workloads, and the ability to provision new func- ploying and managing software in the cloud. Their popularity tions and containers in milliseconds allows capacity to be is due to reduced cost of operations, improved utilization of switched between workloads quickly as demand changes. hardware, and faster scaling than traditional deployment meth- Serverless is also attracting the attention of the research com- ods. The economics and scale of serverless applications de- munity [21,26,27,44,47], including work on scaling out video mand that workloads from multiple customers run on the same encoding [13], linear algebra [20, 53] and parallel compila- hardware with minimal overhead, while preserving strong se- tion [12]. -
Oracle® Linux 7 Managing File Systems
Oracle® Linux 7 Managing File Systems F32760-07 August 2021 Oracle Legal Notices Copyright © 2020, 2021, Oracle and/or its affiliates. This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited. The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing. If this is software or related documentation that is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, then the following notice is applicable: U.S. GOVERNMENT END USERS: Oracle programs (including any operating system, integrated software, any programs embedded, installed or activated on delivered hardware, and modifications of such programs) and Oracle computer documentation or other Oracle data delivered to or accessed by U.S. Government end users are "commercial computer software" or "commercial computer software documentation" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, the use, reproduction, duplication, release, display, disclosure, modification, preparation of derivative works, and/or adaptation of i) Oracle programs (including any operating system, integrated software, any programs embedded, installed or activated on delivered hardware, and modifications of such programs), ii) Oracle computer documentation and/or iii) other Oracle data, is subject to the rights and limitations specified in the license contained in the applicable contract. -
Unionfs: User- and Community-Oriented Development of a Unification File System
Unionfs: User- and Community-Oriented Development of a Unification File System David Quigley, Josef Sipek, Charles P. Wright, and Erez Zadok Stony Brook University {dquigley,jsipek,cwright,ezk}@cs.sunysb.edu Abstract If a file exists in multiple branches, the user sees only the copy in the higher-priority branch. Unionfs allows some branches to be read-only, Unionfs is a stackable file system that virtually but as long as the highest-priority branch is merges a set of directories (called branches) read-write, Unionfs uses copy-on-write seman- into a single logical view. Each branch is as- tics to provide an illusion that all branches are signed a priority and may be either read-only writable. This feature allows Live-CD develop- or read-write. When the highest priority branch ers to give their users a writable system based is writable, Unionfs provides copy-on-write se- on read-only media. mantics for read-only branches. These copy- on-write semantics have lead to widespread There are many uses for namespace unifica- use of Unionfs by LiveCD projects including tion. The two most common uses are Live- Knoppix and SLAX. In this paper we describe CDs and diskless/NFS-root clients. On Live- our experiences distributing and maintaining CDs, by definition, the data is stored on a read- an out-of-kernel module since November 2004. only medium. However, it is very convenient As of March 2006 Unionfs has been down- for users to be able to modify the data. Uni- loaded by over 6,700 unique users and is used fying the read-only CD with a writable RAM by over two dozen other projects.