DepOps News 20150712

一些近期的运维杂闻

Transcript

1. DevOps News 运维杂闻
2. 无题 • 没有主题的主题 • 没有做过特别完整的系统 • 讲故事/段子 • 一些不实际的东西 • 开阔一下眼界 • Just for fun • 好，下面故事开始。。。
3. SmartOS 另一个世界
4. SunOS • Unix • Wiki: SunOS
5. Solaris • SunOS • Wiki: Solaris • Sun -> Oracle • Solaris 11
6. OpenSolaris • Open Source • Wiki: OpenSolaris • 始于 2005 • Oracle 没有后续支持 • 衍生了一些 Fork
7. illumos • Base on OpenSolaris • Wiki: illumos • 浴火重生 ?
8. 考究派 • An open source descendant of OpenSolaris • ...which itself was a branch of Solaris Nevada • ...which was the name of the release after Solaris 10 • ...and was open but is now closed • ...and is itself a descendant of Solaris 2.x • ...but it can all be called “SunOS 5.x” • ...but not “SunOS 4.x” — thatʼs different
9. SmartOS • 主角来了 • SmartOS is a Joyent distribution features NetBSD packaging and is designed for cloud computing
10. Features • Solaris heritage • Zones - OS level virtualization • Crossbow - virtual NICs • ZFS - pooled storage, data integrity • DTrace - production safe Dynamic Tracing • Hypervisor Focus
11. Features • Core OS image booted from external media Persist user data and minimal convenience config Tools to simplify management • KVM - Hardware Virtualization • Open Source distribution of illumos illumos is the successor of OpenSolaris
12. Zones • LXC/Container • Docker • 现在大家对这个概念应该很熟悉了 • SmartMachine - Joyent 的用法
13. Crossbow • Create virtual NICs and virtual switches • Connect VNICs to: ◦ Physical NICs ◦ Virtual switch • Antispoof • MAC address IP addresses DHCP • Bandwidth controls • Simple as `dladm create-vnic -l igb0 foo0`
14. ZFS • ZFS is a copy on write filesystem • Pooled Storage • Don’t have to guess your partition sizes • Managed in datasets • Quotas and reservations can be changed on the fly zvols - virtual block devices
15. ZFS • Multiple RAID options • RAID 1 (Mirroring) • RAID Z1, Z2, Z3 (Single, double, and triple parity) RAID 0 (Striping) • Enterprise features built in • 128-bit Checksums on everything • Data Integrity
16. ZFS • Compression • Deduplication • Adaptive Replacement Cache • Hybrid Storage • SLOG L2ARC
17. iMac • ARC (Adaptive Replacement Cache) • L2ARC • Apple 1TB Fusion Drive - MacOSX • FlashCache - Linux
18. OpenZFS • Mac • Linux • 可用？有人在用
19. Btrfs • Linux • Btrfs vs ZFS • 背后好像都是 Oracle ?
20. DTrace • Dynamic instrumentation of production systems • Originally released in 2003 for Solaris 10, open-sourced in 2005 • Available on SmartOS, illumos, and all other Solaris-derived systems • Available on Mac OS X, FreeBSD, QNX, and
21. DTrace • Supports static and dynamic probes in both userland and the kernel with arbitrary actions and predicates • Aggregates data in the kernel • Allows us to support high numbers of events per second Designed to be safe for production use from the get go
22. SystemTap • Linux • SystemTap Wiki (据说要被弃？) • LTTng Wiki • 很杂，不统一，文化冲突 • 最后 - strace, ltrace
23. Node.js • Joyent 雇佣了创始人 • 去年才成立基金会? • 交给社区 Node.js vs io.js • SmartOS 很多工具是 Javascript 写的
24. KVM • Porting, Porting, Porting • Solaris 现在都不支持?
25. Docker • Triton • LX Branded Zones • Porting, Porting, Porting • 幸亏底子好 • 还是有点累 • 未来的趋势
26. 全家福
27. 遇到的问题 1. Guset OS hang up 2. 网络带宽限制是分离 - illumos overlay for SDN 3. 目前还不支持热迁移 4. 不支持AMD的CPU -现在支持了 5. 没有解决网络存储的问题
28. Brendan 牛人 Brendan
29. Brendan Gregg • Blog • Sun -> Joyent -> Netflix • Solaris -> SmartOS -> Linux • 大势所趋，都去搞 Linux 了 • Shouting in the Datacenter • 直得关注
30. Sysdig • Linux • Sysdig Cloud • process/container Level • Demo • 开源了一部分 agent 代码 • NewRelic - 还没试过
31. Push • PushBullet - 良心服务 • PushOver • PagerDuty
32. New OS 新世界
33. News • 其实，我想说高潮来了 • 用了那么久的 OS • 有没有什么新的变化呢？ • 难道一直就如此了么？ • OS 其实是个慢活 • 但是新世界真的来了
34. Hypervisor https://speakerdeck.com/garethr/the-end-of-the-general-purpose-operating-system
35. Hypervisor Xen, ESX and HyperV are Type 1 hypervisors
36. Hypervisor of containers
37. Atomic From RedHat, uses RPM-OSTree under the hood
38. CoreOS Built-in service-discovery and clustering support
39. Snappy • Snappy from Ubuntu, basically replaces apt-get with docker • transactional updates • 升级 kernel 挂了都可以回 滚，类似 ChromeOS 的 2 个 系统 (印象里是这样的)
40. RancherOS Docker running on Docker running as PID 1
41. UniKernel A library to build your own operating system No userspace You application is compiled into a kernel Drastically smaller surface area for attack Very fast to boot, but with strong isolation guarantees
42. Virtual machines
43. Containers
44. Unikernel
45. OSv
46. Mirage OS
47. Erlang On XEN
48. AnyKernel • RumpKernel • ？
49. 昙花 • 也许只是昙花一现 • 不要期望替换我们现有系统 • 但是可以关注
50. Network OS 网络设备的快速发展
51. Network OS • Wiki • JUNOS • Cisco IOS • FTOS • OpenWRT • DD-WRT
52. Cumulus Linux • a Linux Operating System for industry standard switch hardware. • based on Debian Linux • DELL/HP • Force10 S4810 就可以安装
53. DNOS Dell Networking Operating System
54. Facebook OCP • Open Compute Project • FBOSS • Wedge • OCP networking project
55. 故事结束了 • 软件发展很迅速 • 有很多新的东西出来 • 有很多东西可以尝试 • 但是现实世界是业务驱动的 • 够用就好了 :-) • 更重要的也许是生态 - 抱团
56. End