1、轻量级，不到400k的体积，运行之后不占用任何过多资源。基于现有的 elk 日志收集方案，稍作改造，选用 filebeat 来收集日志，可以作为 sidecar 的形式跟应用运行在同一个 pod 中，比较轻量级消耗资源比较少。精简是为了减小系统体积，也是为了为系统减负，我们在制作中努力在体积和性能之间寻求平衡，windows 系统发展至今linux命令，许多系统组件已不能单独运行，而是环环相扣，组件之间相辅相成，尽最大的努力在体积、速度和稳定之间寻找一个平衡，也许这才是精简的意义所在。
alpine 提供了非常好用的apk软件包管理工具，通过apk –help命令查看完整的包管理命令。
/ # apk
apk-tools 2.8.2, compiled for x86_64.
usage: apk COMMAND [-h|--help] [-p|--root DIR] [-X|--repository REPO] [-q|--quiet] [-v|--verbose] [-i|--interactive] [-V|--version] [-f|--force] [--force-binary-stdout] [--force-broken-world] [--force-non-repository] [--force-old-apk]
[--force-overwrite] [--force-refresh] [-U|--update-cache] [--progress] [--progress-fd FD] [--no-progress] [--purge] [--allow-untrusted] [--wait TIME] [--keys-dir KEYSDIR] [--repositories-file REPOFILE] [--no-network]
[--no-cache] [--cache-dir CACHEDIR] [--arch ARCH] [--print-arch] [ARGS]...
The following commands are available:
add Add PACKAGEs to 'world' and install (or upgrade) them, while ensuring that all dependencies are met
del Remove PACKAGEs from 'world' and uninstall them
fix Repair package or upgrade it without modifying main dependencies
update Update repository indexes from all remote repositories
info Give detailed information about PACKAGEs or repositories
search Search package by PATTERNs or by indexed dependencies
upgrade Upgrade currently installed packages to match repositories
cache Download missing PACKAGEs to cache and/or delete unneeded files from cache
version Compare package versions (in installed database vs. available) or do tests on literal version strings
index Create repository index file from FILEs
fetch Download PACKAGEs from global repositories to a local directory
audit Audit the directories for changes
verify Verify package integrity and signature
dot Generate graphviz graphs
policy Show repository policy for packages
stats Show statistics about repositories and installations
manifest Show checksums of package contents
Global options:
-h, --help Show generic help or applet specific help
-p, --root DIR Install packages to DIR
-X, --repository REPO Use packages from REPO
-q, --quiet Print less information
-v, --verbose Print more information (can be doubled)
-i, --interactive Ask confirmation for certain operations
-V, --version Print program version and exit
-f, --force Enable selected --force-* (deprecated)
--force-binary-stdout Continue even if binary data is to be output
--force-broken-world Continue even if 'world' cannot be satisfied
--force-non-repository Continue even if packages may be lost on reboot
--force-old-apk Continue even if packages use unsupported features
--force-overwrite Overwrite files in other packages
--force-refresh Do not use cached files (local or from proxy)
-U, --update-cache Update the repository cache
--progress Show a progress bar
--progress-fd FD Write progress to fd
--no-progress Disable progress bar even for TTYs
--purge Delete also modified configuration files (pkg removal) and uninstalled packages from cache (cache clean)
--allow-untrusted Install packages with untrusted signature or no signature
--wait TIME Wait for TIME seconds to get an exclusive repository lock before failing
--keys-dir KEYSDIR Override directory of trusted keys
--repositories-file REPOFILE Override repositories file
--no-network Do not use network (cache is still used)
--no-cache Do not use any local cache path
--cache-dir CACHEDIR Override cache directory
--arch ARCH Use architecture with --root
--print-arch Print default arch and exit
This apk has coffee making abilities. 上一个教程：Linux上传文件和下载文件命令行方式
下一个教程：家目录，Linux常用命令概述
