[Open Infrastructure & Cloud Native Days Korea 2019]
커뮤니티 버전의 OpenStack 과 Ceph를 활용하여 대고객서비스를 구축한 사례를 공유합니다. 유연성을 확보한 기업용 클라우드 서비스 구축 사례와 높은 수준의 보안을 요구하는 거래소 서비스를 구축, 운영한 사례를 소개합니다. 또한 이 프로젝트에 사용된 기술 스택 및 장애 해결사례와 최적화 방안을 소개합니다. 오픈스택은 역시 오픈소스컨설팅입니다.
#openstack #ceph #openinfraday #cloudnative #opensourceconsulting
This presentation provides an overview of the Dell PowerEdge R730xd server performance results with Red Hat Ceph Storage. It covers the advantages of using Red Hat Ceph Storage on Dell servers with their proven hardware components that provide high scalability, enhanced ROI cost benefits, and support of unstructured data.
데브시스터즈의 Cookie Run: OvenBreak 에 적용된 Kubernetes 기반 다중 개발 서버 환경 구축 시스템에 대한 발표입니다.
Container orchestration 기반 개발 환경 구축 시스템의 필요성과, 왜 Kubernetes를 선택했는지, Kubernetes의 개념과 유용한 기능들을 다룹니다. 아울러 구축한 시스템에 대한 데모와, 작업했던 항목들에 대해 리뷰합니다.
*NDC17 발표에서는 데모 동영상을 사용했으나, 슬라이드 캡쳐로 대신합니다.
This presentation provides an overview of the Dell PowerEdge R730xd server performance results with Red Hat Ceph Storage. It covers the advantages of using Red Hat Ceph Storage on Dell servers with their proven hardware components that provide high scalability, enhanced ROI cost benefits, and support of unstructured data.
데브시스터즈의 Cookie Run: OvenBreak 에 적용된 Kubernetes 기반 다중 개발 서버 환경 구축 시스템에 대한 발표입니다.
Container orchestration 기반 개발 환경 구축 시스템의 필요성과, 왜 Kubernetes를 선택했는지, Kubernetes의 개념과 유용한 기능들을 다룹니다. 아울러 구축한 시스템에 대한 데모와, 작업했던 항목들에 대해 리뷰합니다.
*NDC17 발표에서는 데모 동영상을 사용했으나, 슬라이드 캡쳐로 대신합니다.
Kubernetes와 Kubernetes on OpenStack 환경의 비교와 그 구축방법에 대해서 알아봅니다.
1. 클라우드 동향
2. Kubernetes vs Kubernetes on OpenStack
3. Kubernetes on OpenStack 구축 방벙
4. Kubernetes on OpenStack 운영 방법
[Open Infrastructure & Cloud Native Days Korea 2019]
커뮤니티 버전의 OpenStack 과 Ceph를 활용하여 대고객서비스를 구축한 사례를 공유합니다. 유연성을 확보한 기업용 클라우드 서비스 구축 사례와 높은 수준의 보안을 요구하는 거래소 서비스를 구축, 운영한 사례를 소개합니다. 또한 이 프로젝트에 사용된 기술 스택 및 장애 해결사례와 최적화 방안을 소개합니다. 오픈스택은 역시 오픈소스컨설팅입니다.
#openstack #ceph #openinfraday #cloudnative #opensourceconsulting
Ceph Object Storage Performance Secrets and Ceph Data Lake SolutionKaran Singh
In this presentation, i have explained how Ceph Object Storage Performance can be improved drastically together with some object storage best practices, recommendations tips. I have also covered Ceph Shared Data Lake which is getting very popular.
[오픈소스컨설팅] Open Stack Ceph, Neutron, HA, Multi-RegionJi-Woong Choi
OpenStack Ceph & Neutron에 대한 설명을 담고 있습니다.
1. OpenStack
2. How to create instance
3. Ceph
- Ceph
- OpenStack with Ceph
4. Neutron
- Neutron
- How neutron works
5. OpenStack HA- controller- l3 agent
6. OpenStack multi-region
Boosting I/O Performance with KVM io_uringShapeBlue
Storage performance is becoming much more important. KVM io_uring attempts to bring the I/O performance of a virtual machine on almost the same level of bare metal. Apache CloudStack has support for io_uring since version 4.16. Wido will show the difference in performance io_uring brings to the table.
Wido den Hollander is the CTO of CLouDinfra, an infrastructure company offering total Webhosting solutions. CLDIN provides datacenter, IP and virtualization services for the companies within TWS. Wido den Hollander is a PMC member of the Apache CloudStack Project and a Ceph expert. He started with CloudStack 9 years ago. What attracted his attention is the simplicity of CloudStack and the fact that it is an open-source solution. During the years Wido became a contributor, a PMC member and he was a VP of the project for a year. He is one of our most active members, who puts a lot of efforts to keep the project active and transform it into a turnkey solution for cloud builders.
-----------------------------------------
The CloudStack European User Group 2022 took place on 7th April. The day saw a virtual get together for the European CloudStack Community, hosting 265 attendees from 25 countries. The event hosted 10 sessions with from leading CloudStack experts, users and skilful engineers from the open-source world, which included: technical talks, user stories, new features and integrations presentations and more.
------------------------------------------
About CloudStack: https://cloudstack.apache.org/
BlueStore, A New Storage Backend for Ceph, One Year InSage Weil
BlueStore is a new storage backend for Ceph OSDs that consumes block devices directly, bypassing the local XFS file system that is currently used today. It's design is motivated by everything we've learned about OSD workloads and interface requirements over the last decade, and everything that has worked well and not so well when storing objects as files in local files systems like XFS, btrfs, or ext4. BlueStore has been under development for a bit more than a year now, and has reached a state where it is becoming usable in production. This talk will cover the BlueStore design, how it has evolved over the last year, and what challenges remain before it can become the new default storage backend.
VMware ESXi - Intel and Qlogic NIC throughput difference v0.6David Pasek
We are observing different network throughputs on Intel X710 NICs and QLogic FastLinQ QL41xxx NIC. ESXi hardware supports NIC hardware offloading and queueing on 10Gb, 25Gb, 40Gb and 100Gb NIC adapters. Multiple hardware queues per NIC interface (vmnic) and multiple software threads on ESXi VMkernel is depicted and documented in this paper which may or may not be the root cause of the observed problem. The key objective of this document is to clearly document and collect NIC information on two specific Network Adapters and do a comparison to find the difference or at least root cause hypothesis for further troubleshooting.
Ceph: Open Source Storage Software Optimizations on Intel® Architecture for C...Odinot Stanislas
Après la petite intro sur le stockage distribué et la description de Ceph, Jian Zhang réalise dans cette présentation quelques benchmarks intéressants : tests séquentiels, tests random et surtout comparaison des résultats avant et après optimisations. Les paramètres de configuration touchés et optimisations (Large page numbers, Omap data sur un disque séparé, ...) apportent au minimum 2x de perf en plus.
In this session, you'll learn how RBD works, including how it:
Uses RADOS classes to make access easier from user space and within the Linux kernel.
Implements thin provisioning.
Builds on RADOS self-managed snapshots for cloning and differential backups.
Increases performance with caching of various kinds.
Uses watch/notify RADOS primitives to handle online management operations.
Integrates with QEMU, libvirt, and OpenStack.
Kubernetes와 Kubernetes on OpenStack 환경의 비교와 그 구축방법에 대해서 알아봅니다.
1. 클라우드 동향
2. Kubernetes vs Kubernetes on OpenStack
3. Kubernetes on OpenStack 구축 방벙
4. Kubernetes on OpenStack 운영 방법
[Open Infrastructure & Cloud Native Days Korea 2019]
커뮤니티 버전의 OpenStack 과 Ceph를 활용하여 대고객서비스를 구축한 사례를 공유합니다. 유연성을 확보한 기업용 클라우드 서비스 구축 사례와 높은 수준의 보안을 요구하는 거래소 서비스를 구축, 운영한 사례를 소개합니다. 또한 이 프로젝트에 사용된 기술 스택 및 장애 해결사례와 최적화 방안을 소개합니다. 오픈스택은 역시 오픈소스컨설팅입니다.
#openstack #ceph #openinfraday #cloudnative #opensourceconsulting
Ceph Object Storage Performance Secrets and Ceph Data Lake SolutionKaran Singh
In this presentation, i have explained how Ceph Object Storage Performance can be improved drastically together with some object storage best practices, recommendations tips. I have also covered Ceph Shared Data Lake which is getting very popular.
[오픈소스컨설팅] Open Stack Ceph, Neutron, HA, Multi-RegionJi-Woong Choi
OpenStack Ceph & Neutron에 대한 설명을 담고 있습니다.
1. OpenStack
2. How to create instance
3. Ceph
- Ceph
- OpenStack with Ceph
4. Neutron
- Neutron
- How neutron works
5. OpenStack HA- controller- l3 agent
6. OpenStack multi-region
Boosting I/O Performance with KVM io_uringShapeBlue
Storage performance is becoming much more important. KVM io_uring attempts to bring the I/O performance of a virtual machine on almost the same level of bare metal. Apache CloudStack has support for io_uring since version 4.16. Wido will show the difference in performance io_uring brings to the table.
Wido den Hollander is the CTO of CLouDinfra, an infrastructure company offering total Webhosting solutions. CLDIN provides datacenter, IP and virtualization services for the companies within TWS. Wido den Hollander is a PMC member of the Apache CloudStack Project and a Ceph expert. He started with CloudStack 9 years ago. What attracted his attention is the simplicity of CloudStack and the fact that it is an open-source solution. During the years Wido became a contributor, a PMC member and he was a VP of the project for a year. He is one of our most active members, who puts a lot of efforts to keep the project active and transform it into a turnkey solution for cloud builders.
-----------------------------------------
The CloudStack European User Group 2022 took place on 7th April. The day saw a virtual get together for the European CloudStack Community, hosting 265 attendees from 25 countries. The event hosted 10 sessions with from leading CloudStack experts, users and skilful engineers from the open-source world, which included: technical talks, user stories, new features and integrations presentations and more.
------------------------------------------
About CloudStack: https://cloudstack.apache.org/
BlueStore, A New Storage Backend for Ceph, One Year InSage Weil
BlueStore is a new storage backend for Ceph OSDs that consumes block devices directly, bypassing the local XFS file system that is currently used today. It's design is motivated by everything we've learned about OSD workloads and interface requirements over the last decade, and everything that has worked well and not so well when storing objects as files in local files systems like XFS, btrfs, or ext4. BlueStore has been under development for a bit more than a year now, and has reached a state where it is becoming usable in production. This talk will cover the BlueStore design, how it has evolved over the last year, and what challenges remain before it can become the new default storage backend.
VMware ESXi - Intel and Qlogic NIC throughput difference v0.6David Pasek
We are observing different network throughputs on Intel X710 NICs and QLogic FastLinQ QL41xxx NIC. ESXi hardware supports NIC hardware offloading and queueing on 10Gb, 25Gb, 40Gb and 100Gb NIC adapters. Multiple hardware queues per NIC interface (vmnic) and multiple software threads on ESXi VMkernel is depicted and documented in this paper which may or may not be the root cause of the observed problem. The key objective of this document is to clearly document and collect NIC information on two specific Network Adapters and do a comparison to find the difference or at least root cause hypothesis for further troubleshooting.
Ceph: Open Source Storage Software Optimizations on Intel® Architecture for C...Odinot Stanislas
Après la petite intro sur le stockage distribué et la description de Ceph, Jian Zhang réalise dans cette présentation quelques benchmarks intéressants : tests séquentiels, tests random et surtout comparaison des résultats avant et après optimisations. Les paramètres de configuration touchés et optimisations (Large page numbers, Omap data sur un disque séparé, ...) apportent au minimum 2x de perf en plus.
In this session, you'll learn how RBD works, including how it:
Uses RADOS classes to make access easier from user space and within the Linux kernel.
Implements thin provisioning.
Builds on RADOS self-managed snapshots for cloning and differential backups.
Increases performance with caching of various kinds.
Uses watch/notify RADOS primitives to handle online management operations.
Integrates with QEMU, libvirt, and OpenStack.
What this presentation covers:
● Slow/Blocked Requests
○ What is a slow request?
○ Possible causes
○ Types of Slow Requests
○ Common Troubleshooting Techniques
● Flapping OSD's when RGW buckets have millions of objects
○
○ Where to start
Possible causes
○ Temporary solutions
○ Permanent Solutions
Kernel Recipes 2015 - Kernel dump analysisAnne Nicolas
Kernel dump analysis
Cloud this, cloud that…It’s making everything easier, especially for web hosted services. But what about the servers that are not supposed to crash ? For applications making the assumption the OS won’t do any fault or go down, what can you write in your post-mortem once the server froze and has been restarted ? How to track down the bug that lead to service unavailability ?
In this talk, we’ll see how to setup kdump and how to panic a server to generate a coredump. Once you have the vmcore file, how to track the issue with “crash” tool to find why your OS went down. Last but not least : with “crash” you can also modify your live kernel, the same way you would do with gdb.
Adrien Mahieux – System administrator obsessed with performance and uptime, tracking down microseconds from hardware to software since 2011. The application must be seen as a whole to provide efficiently the requested service. This includes searching for bottlenecks and tradeoffs, design issues or hardware optimization.
Advanced Percona XtraDB Cluster in a nutshell... la suiteKenny Gryp
Percona XtraDB Cluster is a high availability and high scalability solution for MySQL clustering. Percona XtraDB Cluster integrates Percona Server with the Galera synchronous replication library in a single product package which enables you to create a cost-effective MySQL cluster.
Since three years during Percona Live we initiate people to this technology... but what's next ? This tutorial is the continuation. It targets users that already have experience with PXC and want to go further.
This tutorial will cover the following topics:
- monitoring and trending
- problem solving
- limitations, when not to choose for PXC
- how to test ? (benchmark)
- schema changes
- backups
- multi datacenter
- advanced load balancing with HA Pproxy and Maxscale
- fine tune some important variables like galera cache, flow control limit, ...
오픈소스컨설팅의 오픈소스 기반 IaaS 및 PaaS 클라우드 솔루션 소개 4p 브로슈어입니다.
At Open Source Consulting, we are dedicated to providing robust, scalable, and cost-effective cloud solutions that harness the power of open-source technology. Our Infrastructure as a Service (IaaS) and Platform as a Service (PaaS) offerings are designed to meet the diverse needs of businesses in today’s fast-paced digital landscape.
디지털 시대에 기업들은 빠르게 변화하는 시장과 환경에 발 빠르게 대처하기 위하여 점점 조직을 작게 만들어 민첩성을 확보하고자 노력하고 있습니다. 이를 위한 기술의 하나로 '클라우드 네이티브'의 도입이 가속화 되고 있는데요, 이는 클라우드 컴퓨팅 모델의 장점을 모두 활용하여 애플리케이션을 개발하고 실행하기 위한 접근 방식을 일컫습니다. 아키텍처 관점에서는 분산을 통한 유연성 확보, 운영 관점에서는 애플리케이션도 분산시켜야 하는데요, 이를 위해서는 다양한 클라우드 환경에서 자유롭게 이식하기 위한 '컨테이너' 구현이 필수적입니다.
글로벌 IT리서치 기업 가트너에서는 매년 ‘10대 전략 기술’을 선정하여 발표하고 있습니다. 본 리포트를 통해 IT기술 개발의 흐름을 파악할 수 있는데요, 올해는 최적화(Optimize), 확장(Scale), 개척(Pioneer) 등 세 가지를 테마로 기반으로 10가지 키워드가 공개되었습니다.
2023년의 주요 기술 트렌드를 살펴보고, 이러한 흐름 속에서 기업들은 어떤 문제를 안게 되고 어떻게 해결할 수 있을지.. 오픈소스컨설팅의 최고 기술 책임자인 최지웅 CTO님의 One Pick 트렌드를 소개합니다!
[오픈테크넷서밋2022] 국내 PaaS(Kubernetes) Best Practice 및 DevOps 환경 구축 사례.pdfOpen Source Consulting
최근 금융권이나 공공기관에서는 차세대 프로젝트에 PaaS 기반 시스템을 구축하고 그 위에 마이크로서비스아키텍처(MSA)를 구현하기 위해 많은 투자를 하고 있는데요, 많은 기업들이 오픈소스 기반의 인프라를 고려할 때 기술지원이나 버전 업그레이드 등에 대한 애로사항을 겪게 됩니다. 이런 문제에 대한 해결 방안 중 하나가 바로 커뮤니티 기반의 오픈소스 재단을 활용하는 것인데요!
본 자료에서 커뮤니티 오픈소스 기반 인프라 구축의 장점과 실제 사례에 대해 확인해 보실 수 있습니다.
Kubernetes는 전세계 조직의 96%가 이미 사용 중이거나 검토 중인 오픈소스 기술입니다. 클라우드 시장은 IaaS에서 PaaS로 그 중심이 이동하고 있으며, PaaS 시장은 2026년까지 연평균 19.6% 성장률을 기록할 것으로 전망되고 있습니다.
Kubernetes를 기반으로 애플리케이션을 손쉽게 배포하고 자동화된 운영 관리는 제공하는 PaaS 솔루션, Playce Kube를 소개합니다.
다양한 컴포넌트를 유기적으로 결합한 최적의 플랫폼으로 유연한 클라우드 네이티브 애플리케이션을 위한 환경을 제공합니다.
Life science에서 k-agile으로 일하기 : with SAFe(Scaled Agile) & Atlassian Open Source Consulting
애자일을 아는 것과 기업 조직에 반영하는 것에는 어떤 차이가 있을까요? 애자일 프레임워크와 프랙티스를 그대로 따라만 하는 것보다는 본질을 이해하고 산업과 기업의 환경을 반영하는 것이 필요합니다.
Life Science 산업의 경우 엄격한 컴플라이언스 적용 분야이면서도 팬데믹과 같은 상황에서 하루라도 빨리 백신이나 치료제를 개발해야 하는 두가지 도전을 동시에 마주하고 있습니다. 게다가 글로벌 연구성과와 임상 등에서는 더 이상 폐쇄형 구조로는 대응이 어려우며 오픈 이노베이션을 적극적으로 추진하고 있습니다. 이동이 불가능한 상황에서 서류심사도 늘어났고 데이터 일관성은 더 엄격하게 관리해야 하며 본사, 연구소, 공장 등 Multi Functional Team으로 협업해야 합니다.
이와 같은 도전상황을 대응하는 하나의 방법으로 글로벌 애자일 협업 및 문서도구인 Atlassian의 Jira Align, Jira Software, Confluence 등의 제품으로 구성하는 방안을 소개해 드리겠습니다.
지금 전문가에게 문의하기 : https://osci.kr/contact/contact.php
#Agile #애자일 #SAFe #ScaledAgile #Atlassian #아틀라시안
Atlassian cloud 제품을 이용한 DevOps 프로세스 구축: Jira Cloud, Bitbucket CloudOpen Source Consulting
Digital Transformation 시대의 개발 프로세스의 변화와 개선의 필요성이 대두되면서, DevOps에 대한 관심도 점차 높아지고 있는데요. DevOps 툴로서 아틀라시안(Atlassian)의 도입과 활용이 IT 업종을 비롯한 다양한 회사에서 다방면으로 이루어지고 있습니다. 특히 Atlassian Cloud 버전을 출시하고, 많은 회사들이 Cloud 버전을 사용하면서 DevOps로의 쓰임새가 더욱 확장되고 있습니다.
성공적인 디지털 트랜스포메이션을 위해서는 클라우드 전환이 필수적인데요, 많은 기업에서 막상 클라우드를 도입할 때 여러가지 장벽에 맞닥뜨리게 됩니다.
클라우드 마이그레이션에 관한 여러분의 고민을 시원하게 해결해주기 위해 Global Public Cloud의 독보적인 선두 AWS(Amazone Web Services)와 클라우드 마이그레이션 전문기업 오픈소스컨설팅이 만났습니다!
많은 기업들이 마이그레이션 수행할 때 가장 많이 하는 질문 Top 10에 대한 기술 전문가의 노하우가 담긴 답변을 공유합니다.
EFK Stack이란 ElasticSearch, Fluentd, Kibana라는 오픈소스의 조합으로, 방대한 양의 데이터를 신속하고 실시간으로 수집/저장/분석/시각화 할 수 있는 솔루션입니다. 특히 컨테이너 환경에서 로그 수집을 위해 주로 사용되는 기술 스택입니다.
Elasitc Stack에 대한 소개와 EFK Stack 설치 방법에 대해 설명합니다.
SELinux(Security-Enhanced Linux)는 미국 국가 안보국(NSA)에서 개발한 것으로,
관리자가 시스템 엑세스 권한을 효과적으로 제어할 수 있게 하는 Linux 시스템용 보안 아키텍처입니다.
특정 서비스의 구동이 원활하지 않거나 혹은 관리의 번거로움 등으로 인해 SELinux를 Disable 하는 경우가 많은데요,
SELinux를 사용해야 하는 이유와 작동 방식에 대해 설명합니다,
클라우드 네이티브로의 전환이 확산되면서 애플리케이션을 상호 독립적인 최소 구성 요소로 쪼개는 마이크로서비스(microservices) 아키텍쳐가 각광받고 있는데요.
MSA는 애플리케이션의 확장이 쉽고 새로운 기능의 출시 기간을 단축시킬 수 있다는 장점이 있지만,
반면에 애플리케이션이 커지고 동일한 서비스의 여러 인스턴스가 동시에 실행되면 MSA간 통신이 복잡해 진다는 단점이 있습니다.
서비스 메쉬(Service Mesh)는 이러한 MSA의 트래픽 문제를 보완하기 위해 탄생한 기술로,
서비스 간의 네트워크 트래픽 관리에 초점을 맞춘 네트워킹 모델입니다.
서로 다른 애플리케이션이 얼마나 원활하게 상호작용하는지를 기록함으로써 커뮤니케이션을 최적화하고 애플리케이션 확장에 따른 다운 타임을 방지할 수 있습니다.
서비스 메쉬의 탄생 배경과 기능, 그리고 현재 오픈소스로 배포되어 있는 서비스 메쉬 솔루션에 대해 소개합니다.
Step1. Cloud Native Trail Map
Step2. Service Proxy, Discover, & Mesh
Step3. Service Mesh 솔루션
Step4. Service Mesh 구현화면 - Istio / linkerd
Step5. Multi-cluster (linkerd)
ARM과 AMD64의 차이에 대해 설명하고
오픈스택에 ARM을 도입하기 위한 커뮤니티 활동을 소개합니다.
1. ARM vs AMD64
2. CISC/RISC 차이
3. 커뮤니티에서 ARM위에 오픈스택을 올리기 위한 노력
- SIG (Special Interest Groups)
- PTG(Project Team Gathering)
[Container 기반의 DevOps] Cloud Native
열린기술공방에서 처음으로 런칭한 교육 프로그램의 트렌드 세션 자료입니다. 급변하는 환경에 맞춘 SW를 개발하고 배포하기 위해, 빠른 의사결정을 할 수 있는 환경과 프로세스가 더욱 중요해지고 있는데요. 기업들에게 왜 클라우드 네이티브 전략이 필수적인지에 대해 소개한 자료입니다.
열린기술공방의 교육 과정을 통해 Kubernetes위에서 동작하는 Application의 빌드부터 배포까지의 과정을 한 눈에 확인하실 수 있습니다.
[Open Infrastructure & Cloud Native Days Korea 2019]
커뮤니티 버전의 OpenStack 과 Ceph를 활용하여 대고객서비스를 구축한 사례를 공유합니다. 유연성을 확보한 기업용 클라우드 서비스 구축 사례와 높은 수준의 보안을 요구하는 거래소 서비스를 구축, 운영한 사례를 소개합니다. 또한 이 프로젝트에 사용된 기술 스택 및 장애 해결사례와 최적화 방안을 소개합니다. 오픈스택은 역시 오픈소스컨설팅입니다.
#openstack #ceph #openinfraday #cloudnative #opensourceconsulting
SOCRadar Research Team: Latest Activities of IntelBrokerSOCRadar
The European Union Agency for Law Enforcement Cooperation (Europol) has suffered an alleged data breach after a notorious threat actor claimed to have exfiltrated data from its systems. Infamous data leaker IntelBroker posted on the even more infamous BreachForums hacking forum, saying that Europol suffered a data breach this month.
The alleged breach affected Europol agencies CCSE, EC3, Europol Platform for Experts, Law Enforcement Forum, and SIRIUS. Infiltration of these entities can disrupt ongoing investigations and compromise sensitive intelligence shared among international law enforcement agencies.
However, this is neither the first nor the last activity of IntekBroker. We have compiled for you what happened in the last few days. To track such hacker activities on dark web sources like hacker forums, private Telegram channels, and other hidden platforms where cyber threats often originate, you can check SOCRadar’s Dark Web News.
Stay Informed on Threat Actors’ Activity on the Dark Web with SOCRadar!
TROUBLESHOOTING 9 TYPES OF OUTOFMEMORYERRORTier1 app
Even though at surface level ‘java.lang.OutOfMemoryError’ appears as one single error; underlyingly there are 9 types of OutOfMemoryError. Each type of OutOfMemoryError has different causes, diagnosis approaches and solutions. This session equips you with the knowledge, tools, and techniques needed to troubleshoot and conquer OutOfMemoryError in all its forms, ensuring smoother, more efficient Java applications.
Experience our free, in-depth three-part Tendenci Platform Corporate Membership Management workshop series! In Session 1 on May 14th, 2024, we began with an Introduction and Setup, mastering the configuration of your Corporate Membership Module settings to establish membership types, applications, and more. Then, on May 16th, 2024, in Session 2, we focused on binding individual members to a Corporate Membership and Corporate Reps, teaching you how to add individual members and assign Corporate Representatives to manage dues, renewals, and associated members. Finally, on May 28th, 2024, in Session 3, we covered questions and concerns, addressing any queries or issues you may have.
For more Tendenci AMS events, check out www.tendenci.com/events
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Gamify Your Mind; The Secret Sauce to Delivering Success, Continuously Improv...Shahin Sheidaei
Games are powerful teaching tools, fostering hands-on engagement and fun. But they require careful consideration to succeed. Join me to explore factors in running and selecting games, ensuring they serve as effective teaching tools. Learn to maintain focus on learning objectives while playing, and how to measure the ROI of gaming in education. Discover strategies for pitching gaming to leadership. This session offers insights, tips, and examples for coaches, team leads, and enterprise leaders seeking to teach from simple to complex concepts.
Software Engineering, Software Consulting, Tech Lead.
Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Security,
Spring Transaction, Spring MVC,
Log4j, REST/SOAP WEB-SERVICES.
We describe the deployment and use of Globus Compute for remote computation. This content is aimed at researchers who wish to compute on remote resources using a unified programming interface, as well as system administrators who will deploy and operate Globus Compute services on their research computing infrastructure.
A Comprehensive Look at Generative AI in Retail App Testing.pdfkalichargn70th171
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Climate Science Flows: Enabling Petabyte-Scale Climate Analysis with the Eart...Globus
The Earth System Grid Federation (ESGF) is a global network of data servers that archives and distributes the planet’s largest collection of Earth system model output for thousands of climate and environmental scientists worldwide. Many of these petabyte-scale data archives are located in proximity to large high-performance computing (HPC) or cloud computing resources, but the primary workflow for data users consists of transferring data, and applying computations on a different system. As a part of the ESGF 2.0 US project (funded by the United States Department of Energy Office of Science), we developed pre-defined data workflows, which can be run on-demand, capable of applying many data reduction and data analysis to the large ESGF data archives, transferring only the resultant analysis (ex. visualizations, smaller data files). In this talk, we will showcase a few of these workflows, highlighting how Globus Flows can be used for petabyte-scale climate analysis.
Designing for Privacy in Amazon Web ServicesKrzysztofKkol1
Data privacy is one of the most critical issues that businesses face. This presentation shares insights on the principles and best practices for ensuring the resilience and security of your workload.
Drawing on a real-life project from the HR industry, the various challenges will be demonstrated: data protection, self-healing, business continuity, security, and transparency of data processing. This systematized approach allowed to create a secure AWS cloud infrastructure that not only met strict compliance rules but also exceeded the client's expectations.
Exploring Innovations in Data Repository Solutions - Insights from the U.S. G...Globus
The U.S. Geological Survey (USGS) has made substantial investments in meeting evolving scientific, technical, and policy driven demands on storing, managing, and delivering data. As these demands continue to grow in complexity and scale, the USGS must continue to explore innovative solutions to improve its management, curation, sharing, delivering, and preservation approaches for large-scale research data. Supporting these needs, the USGS has partnered with the University of Chicago-Globus to research and develop advanced repository components and workflows leveraging its current investment in Globus. The primary outcome of this partnership includes the development of a prototype enterprise repository, driven by USGS Data Release requirements, through exploration and implementation of the entire suite of the Globus platform offerings, including Globus Flow, Globus Auth, Globus Transfer, and Globus Search. This presentation will provide insights into this research partnership, introduce the unique requirements and challenges being addressed and provide relevant project progress.
Cyaniclab : Software Development Agency Portfolio.pdfCyanic lab
CyanicLab, an offshore custom software development company based in Sweden,India, Finland, is your go-to partner for startup development and innovative web design solutions. Our expert team specializes in crafting cutting-edge software tailored to meet the unique needs of startups and established enterprises alike. From conceptualization to execution, we offer comprehensive services including web and mobile app development, UI/UX design, and ongoing software maintenance. Ready to elevate your business? Contact CyanicLab today and let us propel your vision to success with our top-notch IT solutions.
Why React Native as a Strategic Advantage for Startup Innovation.pdfayushiqss
Do you know that React Native is being increasingly adopted by startups as well as big companies in the mobile app development industry? Big names like Facebook, Instagram, and Pinterest have already integrated this robust open-source framework.
In fact, according to a report by Statista, the number of React Native developers has been steadily increasing over the years, reaching an estimated 1.9 million by the end of 2024. This means that the demand for this framework in the job market has been growing making it a valuable skill.
But what makes React Native so popular for mobile application development? It offers excellent cross-platform capabilities among other benefits. This way, with React Native, developers can write code once and run it on both iOS and Android devices thus saving time and resources leading to shorter development cycles hence faster time-to-market for your app.
Let’s take the example of a startup, which wanted to release their app on both iOS and Android at once. Through the use of React Native they managed to create an app and bring it into the market within a very short period. This helped them gain an advantage over their competitors because they had access to a large user base who were able to generate revenue quickly for them.
top nidhi software solution freedownloadvrstrong314
This presentation emphasizes the importance of data security and legal compliance for Nidhi companies in India. It highlights how online Nidhi software solutions, like Vector Nidhi Software, offer advanced features tailored to these needs. Key aspects include encryption, access controls, and audit trails to ensure data security. The software complies with regulatory guidelines from the MCA and RBI and adheres to Nidhi Rules, 2014. With customizable, user-friendly interfaces and real-time features, these Nidhi software solutions enhance efficiency, support growth, and provide exceptional member services. The presentation concludes with contact information for further inquiries.
Enhancing Research Orchestration Capabilities at ORNL.pdfGlobus
Cross-facility research orchestration comes with ever-changing constraints regarding the availability and suitability of various compute and data resources. In short, a flexible data and processing fabric is needed to enable the dynamic redirection of data and compute tasks throughout the lifecycle of an experiment. In this talk, we illustrate how we easily leveraged Globus services to instrument the ACE research testbed at the Oak Ridge Leadership Computing Facility with flexible data and task orchestration capabilities.
Globus Compute wth IRI Workflows - GlobusWorld 2024Globus
As part of the DOE Integrated Research Infrastructure (IRI) program, NERSC at Lawrence Berkeley National Lab and ALCF at Argonne National Lab are working closely with General Atomics on accelerating the computing requirements of the DIII-D experiment. As part of the work the team is investigating ways to speedup the time to solution for many different parts of the DIII-D workflow including how they run jobs on HPC systems. One of these routes is looking at Globus Compute as a way to replace the current method for managing tasks and we describe a brief proof of concept showing how Globus Compute could help to schedule jobs and be a tool to connect compute at different facilities.
6. 6/26
01. 구성도
●
Ceph OBJ 흐름
PG: Placement Group
Object를 저장하기 위한 OSD의 group.
복제본 수에 맞춰 member의 수가 달라짐.
OSD: Object Storage Daemon
object를 최종 저장하는 곳
Monitor: ceph OSD의
변화를 monitoring
하여 crush map을
만드는 주체 주체.
[root@ceph-osd01 ~]# rados ls -p vms
rbd_data.1735e637a64d5.0000000000000000
rbd_header.1735e637a64d5
rbd_directory
rbd_children
rbd_info
rbd_data.1735e637a64d5.0000000000000003
rbd_data.1735e637a64d5.0000000000000002
rbd_id.893f4f3d-f6d9-4521-997c-72caa861ac24_disk
rbd_data.1735e637a64d5.0000000000000001
rbd_object_map.1735e637a64d5
[root@ceph-osd01 ~]#
OBJ의 기본 크기는 크기는 주체4MBMB
CRUSH: Controlled Replication Under
Scalable Hashing
Object를 분산 저장하기위한 알고리즘.