A presentation given at Unified Diff in Cardiff in 2013, with the aim of introducing the art & science of systems administration to software developers, based on experiences at the web dev agency.
Linux device drivers (LDDs) are low-level software that handle hardware controllers and hide their peculiarities from users. They present a uniform view of devices. Each physical device like keyboards or disks has a hardware controller that is managed by a device driver. Device drivers control and status registers to initialize and diagnose devices. The code for managing hardware controllers is kept in the Linux kernel rather than applications. Device drivers provide the layer between applications and hardware devices.
Developing a Ceph Appliance for Secure EnvironmentsCeph Community
Keeper Technology develops a Ceph appliance called keeperSAFE for secure storage environments. The keeperSAFE appliance provides a preconfigured Linux distribution, automated installation using Ansible, enclosure management tools, a graphical user interface for monitoring and configuration, data collection and analytics, encryption capabilities, and extensive testing. It is designed for environments that require high availability, no single points of failure, easy management, and auditability. The keeperSAFE appliance addresses the challenges of deploying and managing Ceph at scale in restricted, mission critical environments.
This Presentation Speaks about Compiling Linux Kernel from source, How Device Drivers are implemented in Linux,Udev,Loading and Unloading of Kernel modules.
Shreyas MM
www.shreyasmm.com
Simplifying Ceph Management with Virtual Storage Manager (VSM)Ceph Community
VSM (Virtual Storage Manager) is an open source tool developed by Intel to simplify Ceph storage cluster management. It includes a controller that runs on a dedicated server and manages Ceph through agents on each Ceph node. The VSM makes it easier to deploy, maintain, and monitor Ceph clusters, and also integrates with OpenStack for storage orchestration.
This document provides an introduction to Linux, including what Linux is, what an operating system is, common Linux features, advantages of Linux, how to select a Linux distribution, and additional resources for learning more. It discusses that Linux is an open source operating system created by Linus Torvalds in 1991 and is now developed by thousands of contributors. Key features covered include multi-user access, multi-tasking, hardware support, networking, and graphical user interfaces.
The document provides an overview of training on Red Hat Enterprise Linux installation, troubleshooting, and security services, with objectives including learning how to install RHEL, analyze and fix problems in different areas of the Linux system, manage boot processes, use the rescue environment, configure TCP wrappers and iptables firewall rules, and manage SELinux security policies. Key aspects of RHEL and the Fedora Project open source operating system are also summarized.
Server Hardening Primer - Eric Vanderburg - JURINNOVEric Vanderburg
The document discusses hardening servers and networks against attacks. It recommends disabling nonessential systems; hardening operating systems by applying updates, securing the file system, and hardening applications; and hardening servers like web, mail, FTP, DNS, NNTP, print/file, and DHCP servers. It also recommends hardening networks by properly configuring equipment like routers and firewalls to filter packets.
The document provides an overview of the Linux operating system, including:
- An introduction to Linux and its history as an open-source clone of UNIX.
- Descriptions of Linux's core functionality like multi-user support and virtual memory.
- Discussions of key Linux components like kernels, distributions, packages, and updates.
- Explanations of enterprise-level Linux features around performance, scalability, and reliability.
Linux device drivers (LDDs) are low-level software that handle hardware controllers and hide their peculiarities from users. They present a uniform view of devices. Each physical device like keyboards or disks has a hardware controller that is managed by a device driver. Device drivers control and status registers to initialize and diagnose devices. The code for managing hardware controllers is kept in the Linux kernel rather than applications. Device drivers provide the layer between applications and hardware devices.
Developing a Ceph Appliance for Secure EnvironmentsCeph Community
Keeper Technology develops a Ceph appliance called keeperSAFE for secure storage environments. The keeperSAFE appliance provides a preconfigured Linux distribution, automated installation using Ansible, enclosure management tools, a graphical user interface for monitoring and configuration, data collection and analytics, encryption capabilities, and extensive testing. It is designed for environments that require high availability, no single points of failure, easy management, and auditability. The keeperSAFE appliance addresses the challenges of deploying and managing Ceph at scale in restricted, mission critical environments.
This Presentation Speaks about Compiling Linux Kernel from source, How Device Drivers are implemented in Linux,Udev,Loading and Unloading of Kernel modules.
Shreyas MM
www.shreyasmm.com
Simplifying Ceph Management with Virtual Storage Manager (VSM)Ceph Community
VSM (Virtual Storage Manager) is an open source tool developed by Intel to simplify Ceph storage cluster management. It includes a controller that runs on a dedicated server and manages Ceph through agents on each Ceph node. The VSM makes it easier to deploy, maintain, and monitor Ceph clusters, and also integrates with OpenStack for storage orchestration.
This document provides an introduction to Linux, including what Linux is, what an operating system is, common Linux features, advantages of Linux, how to select a Linux distribution, and additional resources for learning more. It discusses that Linux is an open source operating system created by Linus Torvalds in 1991 and is now developed by thousands of contributors. Key features covered include multi-user access, multi-tasking, hardware support, networking, and graphical user interfaces.
The document provides an overview of training on Red Hat Enterprise Linux installation, troubleshooting, and security services, with objectives including learning how to install RHEL, analyze and fix problems in different areas of the Linux system, manage boot processes, use the rescue environment, configure TCP wrappers and iptables firewall rules, and manage SELinux security policies. Key aspects of RHEL and the Fedora Project open source operating system are also summarized.
Server Hardening Primer - Eric Vanderburg - JURINNOVEric Vanderburg
The document discusses hardening servers and networks against attacks. It recommends disabling nonessential systems; hardening operating systems by applying updates, securing the file system, and hardening applications; and hardening servers like web, mail, FTP, DNS, NNTP, print/file, and DHCP servers. It also recommends hardening networks by properly configuring equipment like routers and firewalls to filter packets.
The document provides an overview of the Linux operating system, including:
- An introduction to Linux and its history as an open-source clone of UNIX.
- Descriptions of Linux's core functionality like multi-user support and virtual memory.
- Discussions of key Linux components like kernels, distributions, packages, and updates.
- Explanations of enterprise-level Linux features around performance, scalability, and reliability.
In this talk, we will give an overview of the state of the Xen Project, trends that impact the project, see whether challenges that surfaced last year have been addressed and how we did it, and highlight new challenges and solutions for the coming year.
Arch linux and whole security concepts in linux explained krishna kakade
this presentation explain about Arch linux and whole security concepts in linux explained for saying thanks to me for this presentation you can follow me on twitter or github that links given in my website link thank you for reaching here .god bless you all
The document discusses new features in QNAP Turbo NAS QTS 4.0 for SMB including:
- Support for up to 8 SAS RAID expansion enclosures for scalable capacity expansion.
- QNAP Flexible Volume which provides dynamic storage pool expansion, instant volume expansion, and thin provisioning.
- Performance enhancements including SSD caching to accelerate IOPS and support for SMB 2 for faster file sharing.
- Advanced data protection features such as SMART data migration and RAID read error correction.
- Improved virtualization support and integration with VMware vSphere and Windows Hyper-V including offloading of storage operations using VAAI and ODX for better performance.
The document provides a historical overview of Linux and embedded systems. It discusses the origins and development of Unix, GNU, and Linux. Key points include:
- Unix was first created at Bell Labs in 1969 and was highly portable due to being written in C. This led to its widespread use.
- Richard Stallman founded the GNU project in 1983 to create a free Unix-like operating system. GNU created many important tools but lacked the kernel.
- Linus Torvalds developed the Linux kernel in 1991, combining it with GNU tools to create a free open-source operating system similar to Unix.
- Today Linux is widely used in embedded systems, having been ported to architectures like ARM, M
This document discusses database deployment automation. It begins with introductions and an example of a problematic Friday deployment. It then reviews the concept of automation and different visions of it within an organization. Potential tools and frameworks for automation are discussed, along with common pitfalls. Basic deployment workflows using Oracle Cloud Control are demonstrated, including setting credentials, creating a proxy user, adding target properties, and using a job template. The document concludes by emphasizing that database deployment automation is possible but requires effort from multiple teams.
Building a Two Node SLES 11 SP2 Linux Cluster with VMwaregeekswing
Linux clustering is one of the most cost-effective way to have redundant servers serving your applications. In this document we show you how to build a two node cluster using SUSE Linux Enterprise Server (SLES) utilizing a virtual environment (ESXi 4) as your testing ground. You can check for more info at our website:
http://geekswing.com/geek/building-a-two-node-sles11-sp2-linux-cluster-on-vmware/
This document discusses migrating an Oracle Database Appliance (ODA) from a bare metal to a virtualized platform. It outlines the initial situation, desired target, challenges, and solution approach. The key challenges included system downtime during the migration, backup/restore processes, using external storage, and database reorganizations. The solution involved first converting to a virtual platform and then upgrading, using backup/restore, attaching an NGENSTOR Hurricane storage appliance for direct attached storage, and moving database reorganizations to a separate maintenance window. It also discusses the odaback-API tool created to help automate and standardize the migration process.
This lecture provides an overview of the popular RTOS's in the Market along with their main features and common applications
Check the other Lectures and courses in
http://Linux4EnbeddedSystems.com
or Follow our Facebook Group at
- Facebook: @LinuxforEmbeddedSystems
Lecturer Profile:
- https://www.linkedin.com/in/ahmedelarabawy
This document provides documentation for the NRPE (Nagios Remote Plugin Executor) addon. It describes how NRPE allows Nagios to monitor local resources on remote Linux/Unix machines by executing Nagios plugins on the remote machines. The document covers installing and configuring NRPE on both the remote machine that will be monitored and the Nagios monitoring host. It provides step-by-step instructions for installing prerequisites like the Nagios plugins, NRPE daemon, and check_nrpe plugin. It also demonstrates creating host and service definitions to monitor resources on the remote machine from Nagios.
My experience with embedding PostgreSQLJignesh Shah
At my current company, we embed PostgreSQL based technologies in various applications shipped as shrink-wrapped software. In this session we talk about the experience of embedding PostgreSQL where it is not directly exposed to end-user and the issues encountered on how they were resolved.
We will talk about business reasons,technical architecture of deployments, upgrades, security processes on how to work with embedded PostgreSQL databases.
The document discusses the GNU Build System, which helps simplify the development and building of portable software distributed as source code. It provides an overview of the key components of the GNU Build System - autoconf, automake, and libtool - and how they are used to generate configuration scripts and Makefile templates from initial files. The document also outlines the typical process of applying the GNU Build System tools to create software packages that can be easily built, installed, and distributed.
XPDS16: Hypervisor Enforced Data Loss Prevention - Neil Sikka, A1LOGICThe Linux Foundation
Data Breaches are all over the news these days, and no organization is safe. Nobody, from the largest governments to the biggest banks to the most advanced security companies is able to adequately protect themselves. The difficulty is that there are infinite number of ways to exfiltrate data from an organization ranging from stolen/lost hardware to steganography to malicious insiders to 0Day exploits installing malware to side channels. The industry is trying to solve this problem using detection, heuristics, pattern matching and behavioral analysis. A new approach is clearly needed to fight the Data Breach problem and keep data inside an organization.
Come find out how to use Hypervisors to repurpose hardware to protect sensitive data under the assumption of compromised networks, devices and users (Malicious Insiders). In addition, find out how to do so without using any type of detection, heuristics, pattern matching or behavioral analysis, but rather a strictly algorithmic approach rooted in hardware. Finally, learn about how this technology can be used in a generic manner to protect data of DataBases, Server Software, unmodified legacy applications, and unmodified consumer applications such as word processing and spreadsheet software.
This document discusses tuning DB2 in a Solaris environment. It provides background on the presenters, Tom Bauch from IBM and Jignesh Shah from Sun Microsystems. The agenda covers general considerations, memory usage and bottlenecks, disk I/O considerations and bottlenecks, and tuning DB2 V8.1 specifically in Solaris 9. It discusses supported Solaris versions, kernel settings, required patches, installation methods, and the configuration wizard. Specific topics covered in more depth include the Data Partitioning Feature, DB2 Enterprise Server Edition, and analyzing and addressing potential memory bottlenecks.
This lecture targets to install Ubuntu on a VM. It starts by describing some info about Virtualization Virtual Machines, followed by installation procedure. The lecture then goes through the UI of Ubuntu.
Check the other Lectures and courses in
http://Linux4EnbeddedSystems.com
or Follow our Facebook Group at
- Facebook: @LinuxforEmbeddedSystems
Lecturer Profile:
- https://www.linkedin.com/in/ahmedelarabawy
Nagios Conference 2013 - John Sellens - Monitoring Remote Locations with NagiosNagios
John Sellens's presentation on Monitoring Remote Locations with Nagios.
The presentation was given during the Nagios World Conference North America held Sept 20-Oct 2nd, 2013 in Saint Paul, MN. For more information on the conference (including photos and videos), visit: http://go.nagios.com/nwcna
This document discusses various methods for migrating an existing VAX system to a virtual VAX environment, including using tape backups, direct disk migration, DECnet backups, cluster migration, CD migration, and FTP transfers. It provides high-level steps for each migration method and considerations around advantages, disadvantages, and post-migration configuration tasks.
This document provides an overview of various Linux basics including the VIM text editor, networking commands, SSH secure shell, SSH keys, package management, package dependencies, services, Apache web server configuration, MySQL database server, caching, and configuration management tools like Puppet, CFEngine, and Chef. It discusses installing and using the popular Wordpress content management system on a Linux server.
Deployment of WebObjects applications on CentOS LinuxWO Community
With the rise of cloud computing and the death of the Xserve, learn how you can deploy your WebObjects applications on a CentOS server. You will also get tips about how to secure your server so that you don't get hack.
This document discusses configuration management with Ansible. It begins by explaining that configuration management is a process for maintaining computer systems, servers, and software in a consistent state over time. It then states that configuration management prevents undocumented changes from negatively impacting operations and security. The document also provides a high-level overview of Ansible, mentioning that it is easy to use, supports multiple platforms, and has been adopted by over 40,000 users. It describes Ansible's push-based and agentless architecture with Linux-based master nodes and support for managing both Linux and Windows nodes.
This document provides a high-level overview of key considerations for building a computer cluster, including:
- Gathering requirements for operations, dataflow, and compute needs.
- Designing for reliability, scalability, and failure tolerance.
- Choosing appropriate rack servers and network switches.
- Using configuration management tools to automate server provisioning and updates.
- Implementing monitoring and metrics collection to detect and diagnose issues.
- Deploying software in a controlled, repeatable manner across integration, test, and production environments.
In this talk, we will give an overview of the state of the Xen Project, trends that impact the project, see whether challenges that surfaced last year have been addressed and how we did it, and highlight new challenges and solutions for the coming year.
Arch linux and whole security concepts in linux explained krishna kakade
this presentation explain about Arch linux and whole security concepts in linux explained for saying thanks to me for this presentation you can follow me on twitter or github that links given in my website link thank you for reaching here .god bless you all
The document discusses new features in QNAP Turbo NAS QTS 4.0 for SMB including:
- Support for up to 8 SAS RAID expansion enclosures for scalable capacity expansion.
- QNAP Flexible Volume which provides dynamic storage pool expansion, instant volume expansion, and thin provisioning.
- Performance enhancements including SSD caching to accelerate IOPS and support for SMB 2 for faster file sharing.
- Advanced data protection features such as SMART data migration and RAID read error correction.
- Improved virtualization support and integration with VMware vSphere and Windows Hyper-V including offloading of storage operations using VAAI and ODX for better performance.
The document provides a historical overview of Linux and embedded systems. It discusses the origins and development of Unix, GNU, and Linux. Key points include:
- Unix was first created at Bell Labs in 1969 and was highly portable due to being written in C. This led to its widespread use.
- Richard Stallman founded the GNU project in 1983 to create a free Unix-like operating system. GNU created many important tools but lacked the kernel.
- Linus Torvalds developed the Linux kernel in 1991, combining it with GNU tools to create a free open-source operating system similar to Unix.
- Today Linux is widely used in embedded systems, having been ported to architectures like ARM, M
This document discusses database deployment automation. It begins with introductions and an example of a problematic Friday deployment. It then reviews the concept of automation and different visions of it within an organization. Potential tools and frameworks for automation are discussed, along with common pitfalls. Basic deployment workflows using Oracle Cloud Control are demonstrated, including setting credentials, creating a proxy user, adding target properties, and using a job template. The document concludes by emphasizing that database deployment automation is possible but requires effort from multiple teams.
Building a Two Node SLES 11 SP2 Linux Cluster with VMwaregeekswing
Linux clustering is one of the most cost-effective way to have redundant servers serving your applications. In this document we show you how to build a two node cluster using SUSE Linux Enterprise Server (SLES) utilizing a virtual environment (ESXi 4) as your testing ground. You can check for more info at our website:
http://geekswing.com/geek/building-a-two-node-sles11-sp2-linux-cluster-on-vmware/
This document discusses migrating an Oracle Database Appliance (ODA) from a bare metal to a virtualized platform. It outlines the initial situation, desired target, challenges, and solution approach. The key challenges included system downtime during the migration, backup/restore processes, using external storage, and database reorganizations. The solution involved first converting to a virtual platform and then upgrading, using backup/restore, attaching an NGENSTOR Hurricane storage appliance for direct attached storage, and moving database reorganizations to a separate maintenance window. It also discusses the odaback-API tool created to help automate and standardize the migration process.
This lecture provides an overview of the popular RTOS's in the Market along with their main features and common applications
Check the other Lectures and courses in
http://Linux4EnbeddedSystems.com
or Follow our Facebook Group at
- Facebook: @LinuxforEmbeddedSystems
Lecturer Profile:
- https://www.linkedin.com/in/ahmedelarabawy
This document provides documentation for the NRPE (Nagios Remote Plugin Executor) addon. It describes how NRPE allows Nagios to monitor local resources on remote Linux/Unix machines by executing Nagios plugins on the remote machines. The document covers installing and configuring NRPE on both the remote machine that will be monitored and the Nagios monitoring host. It provides step-by-step instructions for installing prerequisites like the Nagios plugins, NRPE daemon, and check_nrpe plugin. It also demonstrates creating host and service definitions to monitor resources on the remote machine from Nagios.
My experience with embedding PostgreSQLJignesh Shah
At my current company, we embed PostgreSQL based technologies in various applications shipped as shrink-wrapped software. In this session we talk about the experience of embedding PostgreSQL where it is not directly exposed to end-user and the issues encountered on how they were resolved.
We will talk about business reasons,technical architecture of deployments, upgrades, security processes on how to work with embedded PostgreSQL databases.
The document discusses the GNU Build System, which helps simplify the development and building of portable software distributed as source code. It provides an overview of the key components of the GNU Build System - autoconf, automake, and libtool - and how they are used to generate configuration scripts and Makefile templates from initial files. The document also outlines the typical process of applying the GNU Build System tools to create software packages that can be easily built, installed, and distributed.
XPDS16: Hypervisor Enforced Data Loss Prevention - Neil Sikka, A1LOGICThe Linux Foundation
Data Breaches are all over the news these days, and no organization is safe. Nobody, from the largest governments to the biggest banks to the most advanced security companies is able to adequately protect themselves. The difficulty is that there are infinite number of ways to exfiltrate data from an organization ranging from stolen/lost hardware to steganography to malicious insiders to 0Day exploits installing malware to side channels. The industry is trying to solve this problem using detection, heuristics, pattern matching and behavioral analysis. A new approach is clearly needed to fight the Data Breach problem and keep data inside an organization.
Come find out how to use Hypervisors to repurpose hardware to protect sensitive data under the assumption of compromised networks, devices and users (Malicious Insiders). In addition, find out how to do so without using any type of detection, heuristics, pattern matching or behavioral analysis, but rather a strictly algorithmic approach rooted in hardware. Finally, learn about how this technology can be used in a generic manner to protect data of DataBases, Server Software, unmodified legacy applications, and unmodified consumer applications such as word processing and spreadsheet software.
This document discusses tuning DB2 in a Solaris environment. It provides background on the presenters, Tom Bauch from IBM and Jignesh Shah from Sun Microsystems. The agenda covers general considerations, memory usage and bottlenecks, disk I/O considerations and bottlenecks, and tuning DB2 V8.1 specifically in Solaris 9. It discusses supported Solaris versions, kernel settings, required patches, installation methods, and the configuration wizard. Specific topics covered in more depth include the Data Partitioning Feature, DB2 Enterprise Server Edition, and analyzing and addressing potential memory bottlenecks.
This lecture targets to install Ubuntu on a VM. It starts by describing some info about Virtualization Virtual Machines, followed by installation procedure. The lecture then goes through the UI of Ubuntu.
Check the other Lectures and courses in
http://Linux4EnbeddedSystems.com
or Follow our Facebook Group at
- Facebook: @LinuxforEmbeddedSystems
Lecturer Profile:
- https://www.linkedin.com/in/ahmedelarabawy
Nagios Conference 2013 - John Sellens - Monitoring Remote Locations with NagiosNagios
John Sellens's presentation on Monitoring Remote Locations with Nagios.
The presentation was given during the Nagios World Conference North America held Sept 20-Oct 2nd, 2013 in Saint Paul, MN. For more information on the conference (including photos and videos), visit: http://go.nagios.com/nwcna
This document discusses various methods for migrating an existing VAX system to a virtual VAX environment, including using tape backups, direct disk migration, DECnet backups, cluster migration, CD migration, and FTP transfers. It provides high-level steps for each migration method and considerations around advantages, disadvantages, and post-migration configuration tasks.
This document provides an overview of various Linux basics including the VIM text editor, networking commands, SSH secure shell, SSH keys, package management, package dependencies, services, Apache web server configuration, MySQL database server, caching, and configuration management tools like Puppet, CFEngine, and Chef. It discusses installing and using the popular Wordpress content management system on a Linux server.
Deployment of WebObjects applications on CentOS LinuxWO Community
With the rise of cloud computing and the death of the Xserve, learn how you can deploy your WebObjects applications on a CentOS server. You will also get tips about how to secure your server so that you don't get hack.
This document discusses configuration management with Ansible. It begins by explaining that configuration management is a process for maintaining computer systems, servers, and software in a consistent state over time. It then states that configuration management prevents undocumented changes from negatively impacting operations and security. The document also provides a high-level overview of Ansible, mentioning that it is easy to use, supports multiple platforms, and has been adopted by over 40,000 users. It describes Ansible's push-based and agentless architecture with Linux-based master nodes and support for managing both Linux and Windows nodes.
This document provides a high-level overview of key considerations for building a computer cluster, including:
- Gathering requirements for operations, dataflow, and compute needs.
- Designing for reliability, scalability, and failure tolerance.
- Choosing appropriate rack servers and network switches.
- Using configuration management tools to automate server provisioning and updates.
- Implementing monitoring and metrics collection to detect and diagnose issues.
- Deploying software in a controlled, repeatable manner across integration, test, and production environments.
This document provides guidance on hardening a Linux server for security. It recommends following the CIS and NSA security benchmarks. It suggests choosing a server-oriented Linux distribution, keeping partitions and filesystems separate, encrypting partitions and the running server, securing the boot process, using iptables and TCP wrappers for firewalls, restricting root access and using sudo, enforcing password policies, removing unnecessary packages and services, securing remote administration like SSH, disabling unnecessary Linux modules, and implementing auditing and integrity checks.
The document provides best practices for deploying SUSE CaaS Platform. It discusses requirements like hardware needs, software subscriptions required, and support options. It covers planning and sizing considerations like cluster topology and disk space needs. Deployment best practices include steps like preparing the infrastructure, installing base software, verifying the infrastructure, installing CaaS Platform, and deploying Kubernetes addons. Testing and operations topics like monitoring, logging, backups are also covered.
Sanger, upcoming Openstack for Bio-informaticiansPeter Clapham
Delivery of a new Bio-informatics infrastructure at the Wellcome Trust Sanger Center. We include how to programatically create, manage and provide providence for images used both at Sanger and elsewhere using open source tools and continuous integration.
From Ansible's website: "Ansible is a radically simple IT automation engine that automates cloud provisioning, configuration management, application deployment, intra-service orchestration, and many other IT needs."
This introduction is based on ansible official docs, capturing most important information to make it easy to understand Ansible main concepts.
The document discusses various topics related to operating systems including threads vs processes, scheduling policies, and different operating systems like Windows, Mac OS, and Linux. It provides information on CPU scheduling policies like priority scheduling and shortest remaining time first. It also discusses concepts like context switching, threads, and multi-level feedback queue scheduling.
The document provides an outline on operating systems memory storage and management. It discusses how the OS must manage memory to ensure each process has enough space to execute without interfering with other processes. It describes different types of memory like cache, RAM, and disk and how the OS uses these properly. Specific topics covered include cache memory, RAM, virtual memory using swap files, the kernel, kernel types, shells, types of shells, shell scripting, and the four freedoms of open source software.
The document discusses best practices for deploying MongoDB including sizing hardware with sufficient memory, CPU and I/O; using an appropriate operating system and filesystem; installing and upgrading MongoDB; ensuring durability with replication and backups; implementing security, monitoring performance with tools, and considerations for deploying on Amazon EC2.
Nessus is a free and open-source vulnerability scanner that allows administrators to audit the security of systems and networks. It checks for vulnerabilities, misconfigurations, missing security patches, default passwords and denial of service. Nessus has a client-server architecture that allows scanning of multiple hosts simultaneously from one PC. It produces comprehensive reports that are exportable to formats like HTML and LaTeX.
- The document discusses using DevOps practices for databases. It provides an overview of DevOps and how it relates to databases.
- It introduces the speaker, Osama Mustafa, who is a founder, CEO, author and presenter in the Oracle community.
- The agenda includes questions and answers, automation examples, and how DevOps can make a DBA's life easier. It will also explain what DevOps is, why it is used, and when it should be implemented.
This document provides an overview of automated server deployment and configuration using Ansible. It discusses traditional server provisioning processes versus modern approaches using infrastructure as code and configuration management software. It introduces key concepts in Ansible like idempotence and provides examples of installing Apache web server using Ansible playbooks and modules. The document recommends Ansible as an easy to learn configuration management tool and outlines steps to get started, including installing Ansible, configuring inventory files, using modules and writing playbooks. It also discusses using Ansible to manage Docker images and containers.
Still All on One Server: Perforce at Scale Perforce
Google runs the busiest single Perforce server on the planet, and one of the largest repositories in any source control system. This session will address server performance and other issues of scale, as well as where Google is in general, how it got there and how it continues to stay ahead of its users.
This document provides guidance on securing Linux systems through various configuration and monitoring techniques. It discusses:
- Regularly auditing systems for unauthorized permissions and removing unnecessary setuid/setgid permissions.
- Locating and removing world-writable and unowned files, which could be altered by intruders.
- Using attributes like append-only and immutable to prevent log files from being deleted or binaries from being replaced.
- Configuring options like nosuid in /etc/fstab to restrict permissions on partitions.
The document provides information about Linux operating system. It discusses the history of Linux, how it was developed by Linus Torvalds as a free and open source alternative to Unix. It describes the key components of Linux like the kernel, types of kernels (microkernel, monolithic, hybrid), features of Linux like portability, open source nature, security etc. It also discusses popular Linux distributions like Ubuntu, Red Hat, Debian, Fedora and SUSE. Finally, it mentions some methods of installing Linux like booting from a USB or burning a live CD.
An introduction to Linux Container, Namespace & Cgroup.
Virtual Machine, Linux operating principles. Application constraint execution environment. Isolate application working environment.
Best Practices for Deploying Enterprise Applications on UNIXNoel McKeown
The document provides best practices for preparing a UNIX server for deploying enterprise applications. It discusses tasks such as OS installation, hardening the server, configuring shared storage, setting up system accounts, enabling sudo privileges, and disabling security features like iptables and SELinux that could interfere with applications. The goal is to baseline the server, lock down access, and set it up securely according to industry standards before deploying enterprise software.
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How to Get CNIC Information System with Paksim Ga.pptxdanishmna97
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
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GridMate - End to end testing is a critical piece to ensure quality and avoid...ThomasParaiso2
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In the rapidly evolving landscape of technologies, XML continues to play a vital role in structuring, storing, and transporting data across diverse systems. The recent advancements in artificial intelligence (AI) present new methodologies for enhancing XML development workflows, introducing efficiency, automation, and intelligent capabilities. This presentation will outline the scope and perspective of utilizing AI in XML development. The potential benefits and the possible pitfalls will be highlighted, providing a balanced view of the subject.
We will explore the capabilities of AI in understanding XML markup languages and autonomously creating structured XML content. Additionally, we will examine the capacity of AI to enrich plain text with appropriate XML markup. Practical examples and methodological guidelines will be provided to elucidate how AI can be effectively prompted to interpret and generate accurate XML markup.
Further emphasis will be placed on the role of AI in developing XSLT, or schemas such as XSD and Schematron. We will address the techniques and strategies adopted to create prompts for generating code, explaining code, or refactoring the code, and the results achieved.
The discussion will extend to how AI can be used to transform XML content. In particular, the focus will be on the use of AI XPath extension functions in XSLT, Schematron, Schematron Quick Fixes, or for XML content refactoring.
The presentation aims to deliver a comprehensive overview of AI usage in XML development, providing attendees with the necessary knowledge to make informed decisions. Whether you’re at the early stages of adopting AI or considering integrating it in advanced XML development, this presentation will cover all levels of expertise.
By highlighting the potential advantages and challenges of integrating AI with XML development tools and languages, the presentation seeks to inspire thoughtful conversation around the future of XML development. We’ll not only delve into the technical aspects of AI-powered XML development but also discuss practical implications and possible future directions.
UiPath Test Automation using UiPath Test Suite series, part 5DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
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Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Communications Mining Series - Zero to Hero - Session 1DianaGray10
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
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In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!SOFTTECHHUB
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DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Maruthi Prithivirajan, Head of ASEAN & IN Solution Architecture, Neo4j
Get an inside look at the latest Neo4j innovations that enable relationship-driven intelligence at scale. Learn more about the newest cloud integrations and product enhancements that make Neo4j an essential choice for developers building apps with interconnected data and generative AI.
2. WHAT IS A SYSTEM?
An assemblage or combination of things or parts forming
a complex or unitary whole.
3. WHAT DOES A SYSTEMS
ADMINISTRATOR DO?
• Introduces new technologies into an environment
• Analyses system logs and identifies potential issues
with a system.
• Plans and performs routine maintenance
• Performs and maintains backups
• Installs and configures new software and hardware
4. WHAT DOES A SYSTEMS
ADMINISTRATOR DO?
• Manages user accounts
• Responsibility for security
• Responsibility for documentation of the system
• Plans systems upgrades and outages to apply
upgrades
• Troubleshooting reported problems
• Deals with, often frustrated, system users... ... etc. etc.
5. A COMPUTER SYSTEM
• Many components working together - software
(application, web server, OS), hardware (disks, RAM,
CPU) & others (networking equipment, switches,
routers, load balancers)
• Provides stability and maintainability that underpins the
entire application.
• Supports your software for its lifetime.
• Can provide parts of your application. Sometimes a
problem has already been solved by some other
software.
6. START AT BEGINNING
• Start sysadmin tasks at the beginning of the project.
• Write tools to aid deployment.
• Write tools to set up environments.
• Iterate over these tools and stabilise for production
7. ENVIRONMENTS
• Dev, QA, Live
• Dev, Test, QA, UAT, Live ~~ Dev, Test, QA, UAT,
Staging, Live
• The nearer they get to live, the closer the should
resemble live.
• Dev environment should at least be the same major
versions, preferably OS version.
• Vagrant is a useful tool for this.
8. SSH
• Probably the most frequently used tool
• Forwarding SSH agent to allow key use remotely (e.g.
git, hopping between servers)
• Tunnels for access to remote resources
• Reverse tunnels for remote access to local resource
• Easy to configure the client
9. SSH-AGENT
• Generate keys >2048 bits (e.g. ssh-keygen -b 4096)
• ssh-add to load default key (~/.ssh/id_rsa)
• ssh-copy-id <server> to copy to remote server
• ssh -A <server> to forward agent back to local
instance.
• Agent runs at login for modern Linux desktop, Mac OS.
10. SSH-TUNNELS
• Local access to remote: ssh -L3307:localhost:3306
<server>
• Remote access to local: ssh -R:3307:localhost:3306
<server>
• SOCKS proxy: ssh -D5050 <server>
11. SSH CLIENT
CONFIGURATION
• Per user configuration: ~/.ssh/config
• Config options can be set per host or via wild card, e.g.
User, ForwardAgent, Hostname & many more
• manpage: ssh_config
12. UNIX/LINUX PRINCIPLES
• Most things in Linux & UNIX are text.
• Each command line tools does one task and does it
well.
• Command line tools process text with relative ease.
• Much of the text is separated into fields - especially
logs, or as key = value pairs.
• There are standard locations for many types of file.
13. BASIC TOOLS
• cat - display text
• grep - find text
• awk - field processing (and more)
• sed - search and replace text
• wc - count
• cut - simple field processing
• head, tail - print first and last lines of text
• sort - sort text
14. LOCATION, LOCATION,
LOCATION
• /etc - configuration
• /usr - read-only user data
• /var - variable length files (caches, logs, temporary files)
• /home - users' home directories
• /opt - optional applications
• /srv - served site specific data
• See the Filesystem Hierarchy Standard. Same across most distros
15. VARIABLE LENGTH FILES
• /var/log - Logs go here
• /var/cache - Cached files
• Watch your permissions
• During normal operation, /usr, /opt should be able to be
mounted read only
16. SOFTWARE DEPLOYMENT
• Use vendor supplied packages whenever possible:
• Reduces risk of misconfigurations
• Easier to seek help
• Usually well tested
• Easier upgrades, timely security fixes
• Building from source will take a fair amount of time, CPU
• Ruby may be an exception. PHP isn't
17. CHOICE OF LINUX
DISTRIBUTION
• Two main camps - Debian and RedHat
• Red Hat Enterprise Linux is rock solid but expensive &
packages tend to be older. CentOS is Enterprise Linux
recompiled from the same source RPMs.
• Debian stable is rock solid but packages tend to be old.
Community/3rd party support only.
• Ubuntu LTS is pretty solid, packages are more recent
than EL. Well supported in the Cloud - AWS,
OpenStack especially.
18. SOURCE OF PACKAGES
• Use as stable, well testing packages as much possible
• Ubuntu main, Debian stable ideally
• For EL distros, EPEL augments core packages well
• For EL, IUS provide recent versions of MySQL, PHP
but is less well tested.
• Avoid one person repos, PPAs if at all possible.
19. BUILDING FROM SOURCE
• Do not build on live servers. Deploy only compiled
code.
• Ideally produce a package.
• Avoid if possible. Increased risk of problems - more
moving parts.
20. DIAGNOSTICS
• Check disk space: df -h 100% full is bad.
• Check logs: /var/log, /var/log/syslog, /var/log/messages
- get to know your logs.
• dmesg for hardware information.
• Check RAM (free -m) and CPU usage with top.
• Install sysstat package early on - sar will gather data.
Also gives you iostat, vmstat, mpstat.
21. SECURITY
• Install denyhosts/fail2ban to help protect SSH.
• Disable SSH in as root, use SSH keys.
• Use host based firewalls, AWS security groups.
• Don’t run your servers as root. Try to split them over
different users with clear paths between them. One
user nginx, one. php-fpm
• Audit trials are useful.
22. BACKUPS
• Databases: Dump the DB, don’t take hot copies of the
DB files,
• Make use of your hosting providers backup services.
• Make sure you can restore. Test regularly.
23. PROCESS
• Repeat manual tasks often
• Try to use the same deployment system across stages
• Get live up early, treat it as UAT and deploy to it
regularly. Avoid 'big bang' deployment
• Use what suits - don't blindly follow trends, assess risks
as suits the type of project.
• Small steps, iterative improvement. Agile, Kanban,
Lean etc.
24. AUTOMATION
• CFEngine, Puppet, Chef can get you quick wins. They
can quickly become hard to manage. Learning curves
are steep.
• Ansible is simple to get going on. Can be hacked at
and still get good results. Data driven. Pretty new, but
growing fast.
• Nothing wrong with shell/Python/Ruby/Perl scripts.
Configuration management tools are not essential.
• Packaging gets you out of a lot of automation tasks.
25. THAT’S A LOT OF STUFF!
• Not touched on DR, monitoring, OS provisioning,
storage, networking...
• Hire a sys-admin :)
• A good sys-admin will work with you...
• ...to let you get on with the job you enjoy.