from the Data Deluge? A case for file filtering in eBPF Giulia Frascaria October 28, 2020 1 The data deluge on modern storage 2 Compute node CPU Network Storage node Flash The data deluge on CPU Network Storage node Flash Data DoS in reverse! 11 Compute node CPU Network Storage node Flash Data So similar yet so different ● DoS is malicious ● Data transfer is business-critical ● We 12 So similar yet so different ● DoS is malicious ● Data transfer is business-critical ● We can blindly drop DoS 13 But could we reduce data transfer size? eBPF filter-reduce 14 Filter Reduce input

applications Data Storage • Easy to upgrade and downgrade • User data stored in home directory • Easy to migrate and replicate user data and configuration to another computer • User data saved in multiple are proprietary software which incur a license fee. Figure 1.6. Desktop Customisation Data Storage: User data is often located in multiple locations in Microsoft Windows, which can make backing up and place - the home directory. This makes the migration of data from an old computer to a new one easy, as well as keeping user specific backup data separate. 12 Chapter 1. Introducing Ubuntu Ubuntu Desktop

gigabytes Perform a system back up Before installing Ubuntu Server Edition you should make sure all data on the system is backed up. If this is not the first time an operating system has been installed storage configuration screen will install Ubuntu onto the selected disk, replacing any partitions or data already there. You can choose whether or not to set up LVM, and if you do, whether or not to encrypt Type 'exit' to return. You may run 'pb-sos' to gather diagnostic data Notice: In case one needs to gather system details and diagnostic data for IBM support, this can be done here by running ‘pb-sos’ (see

Information Technology Technology Communication 10,000 + mainstream applications on cloud native, big data CND, MEC, industrial control,etc. Integrated ecosystems and extensive compatibility through distributed maintenance status. Software Package Repositories EPOL Image EUR/oepkgs/... Desktop/SDS/ DB/Big data/... kernel/glibc/ system/GCC/... Core/Base package repository Software package repository of the enablement Linux kernel x86, Arm, RISC-V GPU NPU Real-time kernel Security kernel Database Big data Resource orchestration Desktop system Industrial application ... ... openEuler OpenHarmony / DSoftBus

........................................................................................... 55 5. Data Plane Development Kit ........................................................................... options available. 1.3. Backing Up • Before installing Ubuntu Server Edition you should make sure all data on the system is backed up. See Chapter 19, Backups [p. 323] for backup options. If this is not the installation progress will begin. It will not be possible to move back to this or previous screens and any data on the disks you have configured the installer to use will be lost. 4 http://www.ubuntu.com/down

Cilium Hubble Important common packages Debugging toFQDNs and DNS Debugging Mutexes / Locks and Data Races Hubble Bumping the vendored Cilium dependency Release Management Organization Release tracking Cilium’s eBPF implementation is optimized for maximum performance, can be attached to XDP (eXpress Data Path), and supports direct server return (DSR) as well as Maglev consistent hashing if the load balancing run in standalone mode or as a cluster making it a great choice for local testing with multi-node data paths. Agent nodes are joined to the master node using a node-token which can be found on the master

Cilium Hubble Important common packages Debugging toFQDNs and DNS Debugging Mutexes / Locks and Data Races Hubble Bumping the vendored Cilium dependency Documentation Style Header Titles Body Code Cilium’s eBPF implementation is optimized for maximum performance, can be attached to XDP (eXpress Data Path), and supports direct server return (DSR) as well as Maglev consistent hashing if the load balancing run in standalone mode or as a cluster making it a great choice for local testing with multi-node data paths. Agent nodes are joined to the master node using a node-token which can be found on the master

使用，UNPKG 带上版本号，将锁定版本访问，删除版本号请求数据，将会自动重定向最新版本。 1. # 命令索引 JSON 数据 2. https://unpkg.com/linux-command/dist/data.json 3. # 对应命令详情（Markdown）数据 4. https://unpkg.com/linux-command/command/<命令名称>.md 你也可以通过 Github 1. # 命令索引 JSON 数据 2. https://raw.githubusercontent.com/jaywcjlove/linux- command/master/dist/data.json 3. # 对应命令详情（Markdown）数据 4. https://raw.githubusercontent.com/jaywcjlove/linux-command/master/command/<命令 指定到标准输出，输出的是文件filename的内容，不会将filename.bz2删除。 压缩到标准输出： 1. bzip2 -c filename 2. bzip2: I won't write compressed data to a terminal. 3. bzip2: For help, type: `bzip2 --help'. 这里，使用 -c 指定压缩到标准输出不删除原有文件，不同的是，压缩后的文件无法输出到标准输

Cilium Hubble Important common packages Debugging toFQDNs and DNS Debugging Mutexes / Locks and Data Races Hubble Bumping the vendored Cilium dependency Release Management Organization Release tracking Cilium’s eBPF implementation is optimized for maximum performance, can be attached to XDP (eXpress Data Path), and supports direct server return (DSR) as well as Maglev consistent hashing if the load balancing open http://localhost:12000/ to access the UI. Hubble UI is not the only way to get access to Hubble data. A command line tool, the Hubble CLI, is also available. It can be installed by following the instructions

expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 1.6.5 Extracting data from text file table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 2.4.4 Searching on the package meta data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 2.5 Debian package management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 2.5.1 Archive meta data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 2