檢視 Rancher Requirements 的原始碼

== RKE ==
high-availability RKE cluster
* '''Three Linux nodes''', typically virtual machines, in an infrastructure provider such as Amazon’s EC2, Google Compute Engine, or vSphere.
: These nodes must be in the same region/data center. You may place these servers in separate availability zones.
: Rancher server data is stored on etcd database that runs on all three nodes.
:* etcd is a distributed reliable key-value store for the most critical data of a distributed system, with a focus: Simple, Secure, Fast & Reliable.
:: etcd database requires an odd number of nodes so that it can always elect a leader with a majority of the etcd cluster.
: general installation requirements for OS, container runtime, hardware, and networking.
: {| class="wikitable" style="text-align: center;"
! Deployment Size || Clusters || Nodes || vCPUs || RAM
|-
! Small
| Up to 150 || Up to 1500 || 2 || 8 GB
|-
! Medium
| Up to 300 || Up to 3000 || 4 || 16 GB
|-
! Large
| Up to 500 || Up to 5000 || 8 || 32 GB
|-
! X-Large
| Up to 1000 || Up to 10,000 || 16 || 64 GB
|-
! XX-Large
| Up to 2000 || Up to 20,000 || 32 || 128 GB
|}
: Contact Rancher for more than 2000 clusters and/or 20,000 nodes.
* '''A load balancer''' to direct front-end traffic to the three nodes.
: RKE tool will deploy an NGINX Ingress controller.
: This controller will listen on ports 80 and 443 of the worker nodes, answering traffic destined for specific hostnames.
:* A layer-4 load balancer
:: Install NGINX, '''stream''' module is required.
:: nginx.conf
::  worker_processes 4;
 worker_rlimit_nofile 40000;
 
 events {
     worker_connections 8192;
 }
 
 stream {
     upstream rancher_servers_http {
         least_conn;
         server <IP_NODE_1>:80 max_fails=3 fail_timeout=5s;
         server <IP_NODE_2>:80 max_fails=3 fail_timeout=5s;
         server <IP_NODE_3>:80 max_fails=3 fail_timeout=5s;
     }
     server {
         listen 80;
         proxy_pass rancher_servers_http;
     }
 
     upstream rancher_servers_https {
         least_conn;
         server <IP_NODE_1>:443 max_fails=3 fail_timeout=5s;
         server <IP_NODE_2>:443 max_fails=3 fail_timeout=5s;
         server <IP_NODE_3>:443 max_fails=3 fail_timeout=5s;
     }
     server {
         listen     443;
         proxy_pass rancher_servers_https;
     }
 
 }
:* A layer-7 load balancer
* '''A DNS record''' to map a URL to the load balancer. This will become the Rancher server URL, and downstream Kubernetes clusters will need to reach it.
== RancherD ==
== Worker ==
=== Linux ===
=== Windows ===
__NOTOC__
[[Category:Kubernetes]]
[[Category:Rancher]]