Alibaba Cloud Linux 4 enables cgroup v2 by default,but also supports switching to cgroup v1.This topic describes how to confirm the current cgroup version and how to switch.Note cgroup v1 and cgroup v2 are the two main ...
操作系统限制 架构 操作系统 x86架构 Rocky Linux 9.5 Rocky Linux 9.1 Ubuntu 20.04 Alibaba Cloud Linux 3 容器优化版 Rocky Linux 8.8 Ubuntu 22.04 Alibaba Cloud Linux 3 Pro Alibaba Cloud Linux 2/3 CentOS 7.6及更高版本，或CentOS...
Alibaba Cloud Linux images are available in the VHD and QCOW2 formats and have built-in cloud-init.You can use the images on on-premises virtual machines.Only kernel-based virtual machines(KVMs)are supported.This topic ...
This topic describes the cause of and solution to the issue that an Alibaba Cloud Linux 3 instance cannot start after the alinux-base-setup-3.2-7.al8 component is installed,and how to prevent it.Problem description After ...
本文介绍Alibaba Cloud Linux定期发布的CVE（Common Vulnerabilities and Exposures）更新记录。阿里云服务器操作系统安全中心
本文主要介绍在Alibaba Cloud Linux 2操作系统中查看系统或内核参数、设置内核转储功能的操作步骤，同时提供了Debuginfo包、源码包以及实验性软件包的获取方式。查看或修改参数 查看或修改系统参数 Alibaba Cloud Linux 2在配置文件/etc/...
Linux supports the user namespace feature.The feature enables processes to have different user IDs and group IDs in different user namespaces to isolate permissions.However,enabling the user namespace feature increases the...
操作系统限制 架构 操作系统 x86架构 Rocky Linux 9.5 Rocky Linux 9.1 Ubuntu 20.04 Alibaba Cloud Linux 3 容器优化版 Rocky Linux 8.8 Ubuntu 22.04 Alibaba Cloud Linux 3 Pro Alibaba Cloud Linux 2/3 CentOS 7.6及更高版本，或CentOS...
This topic describes the causes of and solutions to the issue that you cannot query or configure the routing information of an Elastic Compute Service(ECS)instance that runs Alibaba Cloud Linux 2.Problem description You ...
This topic describes the cause of and solution to the issue that the Send-Q return value is 0 after an ss command is run on an Alibaba Cloud Linux 2 Elastic Compute Service(ECS)instance.Problem description After you run ...
如果您的Alibaba Cloud Linux 2操作系统中systemd服务运行异常，可参考文本提供的方案解决问题。问题现象 在符合以下条件的Alibaba Cloud Linux 2实例中，系统在正常运行时实例内部署的业务有概率启动失败。镜像：Alibaba Cloud Linux 2....
This topic describes the technical support that Alibaba Cloud provides for Alibaba Cloud Linux and the contact information of Alibaba Cloud technical support personnel.Alibaba Cloud provides the following technical support...
使用Alibaba Cloud Linux 3作为K8s节点，在扩容后有可能引起Pod初始化失败。本文主要介绍Alibaba Cloud Linux 3系统中Systemd导致Pod初始化失败的原因及解决方案。问题描述 在Pod初始化过程中，扩容节点在刷新K8s相关的配置时调用的脚本...
操作系统限制 架构 操作系统 x86架构 Rocky Linux 9.5 Rocky Linux 9.1 Ubuntu 20.04 Alibaba Cloud Linux 3 容器优化版 Rocky Linux 8.8 Ubuntu 22.04 Alibaba Cloud Linux 3 Pro Alibaba Cloud Linux 2/3 CentOS 7.6及更高版本，或CentOS...
This topic describes the cause of the following issue and how to resolve the issue:The free command output indicates that the memory usage of a container running on an Alibaba Cloud Linux 3 host is higher the memory usage ...
Alibaba Cloud Linux 2 supports the following kernel TCP congestion control algorithms:Reno,Bottleneck Bandwidth and Round-trip propagation time(BBR),and CUBIC.These algorithms perform differently in various network ...
When you make system calls such as read and copy_file_range to read files from a Network File System(NFS)file system on an Alibaba Cloud Linux 3 instance,the read performance may significantly degrade compared with when ...
本文为您介绍Alibaba Cloud Linux 2系统的ECS实例创建大量进程失败的原因及解决方案。问题描述 Alibaba Cloud Linux 2系统的ECS实例中执行系统调用（fork/clone）时，进程创建失败，返回“-1 EAGAIN(Resource temporarily unavailable)”...
操作系统限制 架构 操作系统 x86架构 Rocky Linux 9.5 Rocky Linux 9.1 Ubuntu 20.04 Alibaba Cloud Linux 3 容器优化版 Rocky Linux 8.8 Ubuntu 22.04 Alibaba Cloud Linux 3 Pro Alibaba Cloud Linux 2/3 CentOS 7.6及更高版本，或CentOS...
本文为 Alibaba Cloud Linux 3操作系统的软件兼容清单，通过阿里云服务器操作系统兼容性认证测试的软件将会发布到本清单中。软件类型 软件名称 软件版本 软件厂商 中间件 宝兰德应用服务器软件 V9.5 北京宝兰德软件股份有限公司 中间件 ...
本文为您介绍Alibaba Cloud Linux 2和Alibaba Cloud Linux 3系统中挂载FAT文件系统报错“fat:utf8 is not a recommended IO charset for FAT filesystems,filesystem will be case sensitive!的原因和解决方案。问题现象 采用-o iocharset=...
This topic provides the troubleshooting information about and solutions to Kernel Live Patching(KLP)issues.Vulnerability CVE-2021-33909 in Alibaba Cloud Linux 2 ECS instances Fix the CVE-2021-22555 vulnerability in an ...
Alibaba Cloud Linux为内核的高危安全漏洞（CVE）以及重要的错误修复（Bugfix）提供了热补丁支持，您无需重启服务器即可对操作系统内核更新补丁，以获取内核的稳定与安全。本文主要介绍内核热补丁以及内核热补丁的优势与限制。功能简介 您...
本文介绍了Alibaba Cloud Linux 2系统的ECS实例无法正常删除Pod的原因及解决方案。问题描述 在满足以下条件的Alibaba Cloud Linux 2实例中，出现无法正常删除Pod的情况，进程处于D状态（不可中断的睡眠状态），并出现如下调用栈信息。镜像...
本文介绍了Alibaba Cloud Linux 3 系统上eBPF程序使用LRU hash最终cpu利用率飙高的原因及解决方案。问题描述 在Alibaba Cloud Linux3上，通过eBPF编写的程序如果利用LRU hash，在高频情况下可能会出现LRU maps持续打满，系统CPU利用率飙高...
ANCK（Alibaba Cloud Linux Kernel）是阿里云优化的Linux内核版本。本文将介绍如何正确使用ANCK的eBPF的特性。背景信息 eBPF（extended Berkeley Packet Filter）因其安全可编程的特性而广泛应用于网络、追踪和诊断等领域，其所支持的功能...
When the Linux operating system is up for an extended period of time,memory fragmentation may occur.This topic provides solutions to this issue.Problem description When a service deployed on an instance occasionally takes ...
架构 操作系统 x86架构 Rocky Linux 9.5 Rocky Linux 9.1 Ubuntu 20.04 Alibaba Cloud Linux 3 容器优化版 Rocky Linux 8.8 Ubuntu 22.04 Alibaba Cloud Linux 3 Pro Alibaba Cloud Linux 2/3 CentOS 7.6及更高版本，或CentOS 8 Anolis OS ...
本文介绍了Linux的memcg残留问题导致系统卡顿或内存不足的原因及解决方案。问题现象 系统在长时间运行后出现卡顿或内存不足等问题，同时也会出现大量不可回收的 unreclaimable slab 和 percpu 内核内存占用。尽管 memcg 的数量较大，但在/...
A printk deadlock refers to a situation in which multiple threads in the system wait for each other to release resources and cannot continue when the printk function in the Linux kernel is called to print logs.printk ...
阿里云官方为您提供了Alibaba Cloud AI Containers（AC2）...基础镜像 镜像名称 CPU/GPU 版本信息 镜像地址 镜像描述 cuda-profiling GPU CUDA Samples：13.0 Python：3.12.7 CUDA：13.0.2 BaseOS:Alibaba Cloud Linux 3.2104 ac2-registry....
Alibaba Cloud Linux是阿里云打造的Linux服务器操作系统发行版。阿里云积极吸收开源社区成果，为云上应用程序提供Linux社区的增强功能，并通过引入更完善的发行版质量体系确保产品品质。同时结合阿里云基础设施进行深度优化，并为用户提供...
操作系统限制 架构 操作系统 x86架构 Rocky Linux 9.5 Rocky Linux 9.1 Ubuntu 20.04 Alibaba Cloud Linux 3 容器优化版 Rocky Linux 8.8 Ubuntu 22.04 Alibaba Cloud Linux 3 Pro Alibaba Cloud Linux 2/3 CentOS 7.6及更高版本，或CentOS...
By default,mitigations for vulnerabilities are enabled in Alibaba Cloud Linux.However,the mitigations may affect system performance.You can disable mitigations for vulnerabilities as needed.This topic describes the CPU ...