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Introduction to Stacki
Greg Bruno, PhDVP Engineering, StackIQ
Open Source Stack Installer
Stacki is a very fast and ultra reliable Linux server provisioning tool … at scale. With zero prerequisites for taking systems from bare metal to a ping and prompt.
How We Solve the Problem
Stacki Positioning
DevOps / Configuration Tool
DHCP /DNS / TFTPNetworkDiskOS
In-housedevelopeddeployment
tools
- Disk Array Controller Configuration- Disk Partitioning Configuration
Datacenter Architecture
Frontend
Network
Backend Backend Backend Backend
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Download and Boot the ISO
Go to www.stacki.com and download the ISO ◦ It’s 1.2 GB ◦ “stacki” pallet plus stripped down CentOS 6.7
Boot the ISO on the host that will be your frontend
Frontend Services
Services to build backend nodes ◦ DHCP ◦ TFTP ◦ Named (optional)
Services to access backend nodes ◦ SSH key management ◦ Parallel execution shell
Host Configuration Spreadsheet
Frontend
Network
Backend Backend Backend Backend
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Backend Installation
Save your Host Configuration spreadsheet as a CSV Import CSV on frontend ◦ “stack load hostfile file=hosts.csv”
Tell backend nodes to install on their next PXE boot ◦ “stack set host boot backend action=install”
PXE boot all backend nodes Done!
BitTorrent-Inspired Package Installation
Stacki
Customizing Your Hosts
Advanced Networking
Via Host Configuration spreadsheet, you can configure: ◦ Bonded interfaces ◦ VLANs ◦ Bridging ◦ Any combo of the above
Manage hosts in multiple subnets ◦ Build a single cluster from hosts in multiple subnets ◦ Manage hosts in multiple datacenters
Host Configuration Spreadsheet
Disk Controller Configuration Spreadsheet
Disk Partition Configuration Spreadsheet
Multiple Distributions
A frontend houses a default distribution ◦ Based on stripped down CentOS 6.7 or 7.2 ◦ Used to build backend nodes
Can add any number of new distributions to a frontend ◦ E.g., RHEL 6.x based distro, CentOS 6.5, etc.
Assign any backend node to any distro
Because my kid just went to college
Ubuntu
Current support for Ubuntu 16.04 (Xenial Xerus)
Backend nodes only ◦ Frontend runs CentOS
Simple backend configuration ◦ Single disk ◦ Single network
UEFI
Next gen BIOS StackIQ customers asking for this Really hard for end users
iPXE ◦ HTTP ◦ More Scalable ◦ More Fault tolerant
DHCP-less environments
REST Interface
Stacki has a rich command line
Now coupled with a REST interface ◦ Authenticated ◦ Access to all commands ◦ Except a few on the “naughty list”
Baseboard Management
Whitebox ◦ Serial console ◦ Power on / off ◦ Next boot action ◦ Serial console
Proprietary (Dell, HP) ◦ Firmware updates ◦ Remote virtual console ◦ Boot order
Multiple Versions
Open Source ◦ RHEL/CentOS 6.x FEs build 6.x BEs ◦ RHEL/CentOS 7.x FEs build 7.x BEs
Stacki Pro - Cross Building ◦ RHEL/CentOS 7.x FEs build 7.x and 6.x BEs
Discover Hardware Capabilities
Collect MAC addresses and build a “skeleton” host configuration spreadsheet ◦ All ethernet networks ◦ BMCs ◦ Host-based VLANs ◦ Bonding
In the pipeline
High Availability for Frontends
Active/Passive Configuration ◦ Dedicated passive frontend server Poll / Mirror database changes ◦ Mirror software repositories ◦ Git checkout latest config profiles Heartbeat protocol to determine when active dies
Storage System Pallets
Track HW / SW deltas over time
Software Example: ◦ Poll RPM changes on nodes ◦ Compare to t=0 ◦ Compare to software repository ◦ Log everything in DB
“Pallet to Dumpster”
Life Cycle Management
Try It Out
stacki.com
Download - www.stacki.com
Source & Docs - github.com/StackIQ/stacki/wiki
Discuss - groups.google.com/forum/#!forum/stacki