uipath Orchestrator集群部署与高可用HAA部署简介

Posted 2023-03-19

参考技术A

本文不涉及到具体的HAA部署步骤，只是对Uipath相关的Redis集群、高可用方案做一个简单的介绍。
目前官方文档上介绍的的Orchestrator部署方案有三种：

1、单节点orchestrator部署

单节点部署，即是一般的orchestrator部署，这里不做多介绍。

2、多节点部署：其实类似集群（cluster）部署。

每个orchestrator都相当于集群中的一个“节点”（node）,每个节点都提供相同的服务。当有业务请求进来后，由HAA（Redis）进行业务调度，将该请求分配给此刻负载较小的节点来处理，是的每个节点的压力都比较平均。HAA实际上就充当了一个负载均衡器的角色。

由于有多个 Orchestrator 节点可用，因此这能提供更出色的性能并能有效避免故障 - 当一个节点发生故障时，其他节点还可承担负载。它还具有水平可扩展性，因为随着对机器人需求的进一步增长，还可以添加其他节点。但是，不应将此部署模型与[高可用性]混淆，因为单独的 HAA 节点仍为潜在的单点故障。

3、高可用性部署（High Availablity）

高可用性部署具有与多节点部署类似的架构，但与简单的 多节点 Orchestrator 部署 相比，此模型要使用更多资源，且至少需要 3 个 HAA 节点并要满足相应的 硬件和软件要求 。多个Orchestrator和HAA节点，能够在一个节点出现故障的时候，由其他节点承担负载。

Redis实现高可用原理：

1、主从复制数据。（replication）

2、采用哨兵监控数据节点的运行情况，一旦主节点出现问题由从节点顶上继续进行服务。（sentinel）

高可用与Redis集群的区别：

高可用实现的是服务器与业务处理数据的稳定性，降低系统整体故障的概率，提高系统整体的可用性与稳定性；集群则是为了提高系统的性能与线性扩展能力，解决单机的性能瓶颈问题。

uipath orchestrator installation

本文转自：https://dotnetbasic.com/2019/08/uipath-orchestrator-installation.html

UiPath Orchestrator Installation

In this tutorials, you will learn step by step uipath orchestrator installation.UiPath Orchestrator is a centralized robot management dashboard where you can easily deploy, secure, and manage your UiPath Robots at scale.

System Requirement

Orchestrator Server

• Windows Server Operating System – minimum required version: 2008 R2 SP1. Check the Software Requirements for the other supported versions.
• PowerShell – minimum required version: 4.0. To download PowerShell version 4.0, visit this link and install Windows Management Framework 4.0.
• .NET Framework – minimum required version: 4.6.1. To find out which .NET version is installed on your computer, please see Finding the Installed .NET Version.
• IIS – minimum required version: 7.5. this is part of the Web Server (IIS) role and is automatically enabled by the provided InstallRolesAndFeatures.ps1the script.
• URL Rewrite – Enables the website to redirect the calls to https (https://servername), instead of Http (http://servername). Please download and install the URL Rewrite by accessing this link.
• Server Roles and Features. We provide a PowerShell script, InstallRolesAndFeatures.ps1, that automatically adds the required roles and features to the application server(s). The list of roles and features is presented in Server Roles and Features. Please note that this chapter is for informational purposes only. The archive containing the script and the XML file can be downloaded here.
• Web-Deploy extension – minimum required version: 3.5, 64bit version. Please note that this is required only for PowerShell script installations, such as the Azure one. Enables you to deploy a website. Please download and install Web Deploy Extension 3.5 by accessing this link

 

Orchestrator  Installation

After installing all pre-requisites, check the database is accessible from the Orchestrator server/not. It should be accessible.

Step 1: Open the Uipath Exe.

 

 

 

 

 

 

 

 

 

Check on Accept terms and click on the “Advanced” button.

You can see 3 things available installation:

• Studio– For
  Development of workflows
• Robot–
  Execution of bot on target VM where bots are actually going to run (Target VM)
• Orchestrator
  Website– Monitor and schedule jobs/robots (Orchestrator server)

 

 

 

 

 

 

 

 

If you only install Orchestrator, Select “Entire feature will be installed on the local hard drive” from Orchestrator website option and select “Entire feature will be unavailable” for others two (Studio, Robot).

Next Step: Click Next

Please follow the steps given at below link to install
Orchestrator (Single Node) as given at below link: https://orchestrator.uipath.com/docs/the-windows-installer

Studio Installation/Robot

Select “Entire feature will be installed on the local hard drive” from Studio and robot option. Then click next.

 

 

 

 

 

 

 

 

 

 

SSL Certificate Installation

UiPath needs the SSL certificate to be installed on target VM. This is required robots can communicate with Orchestrator. Perform the below steps.

• Try to access Orchestrator URL in the browser on target VM. If it is not accessible, please liaise with your network/IT team to get access.
• It will give the error as a “security certificate not installed”. Click on it as below:

->Click View certificate -> Install certificate

->Select Local machine. Click on Next.

 

 

 

 

 

 

 

 

 

 

 

 

 

->Install license in “Trusted Root Certificate Authority” as below:

 

 

 

 

 

 

 

 

 

 

 

 

 

• Click Finish. It will show the message “Import is successful”
• Refresh orchestrator URL.
• Run C:\Program Files (x86)\UiPath\Studio\UiRobot.exe. Open UIRobot icon from System Tray.

 

 

 

 

 

 

 

• Click on UIRobot settings
• Mention Orchestrator URL and robot key. Click on connect. It should show “Status: Connected”.

License Activation and Uploading

Activate Orchestrator by following steps given at below link:  https://orchestrator.uipath.com/docs/activating-and-uploading-your-license

After successful activation, you can see the expiry date of the license after logging in to Orchestrator.

 

Multi-tenant

UiPath creates a “default” tenant. If you want to create a new tenant click on “Become A Tenant” button:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Uipath Orchestrator Installation PDF Download