System requirements are the fundamental specifications and configuration needed to install and run Agent Client Collector (ACC) effectively.

Before installing the Agent Client Collector, you must do the following:

• When working with a MID Server:
  • Ensure that one or more MID Servers are properly registered and validated with your instance, to be available for an agent connection request. For details, see Configuring MID Servers. In a staging environment, you need only one MID Server. However, in a production environment, configure at least two MID Servers to support zero-touch configuration and ensure that a MID Server is always available if one fails.
  • Ensure that there's a validated connection from the designated server where you're installing the agent to the MID Server.
  • Ensure that the MID Server port on which the Agent Client Collector listener runs is accessible.
• When working with MID-less deployment, follow the instructions described in Configuring MID-less Agent Client Collector.
• Ensure that the following plugins are installed on your instance:

  Application	Plugin
  ACC-F	MID Server CMDB for scoped applications Agent Client Collector global utilities MID Web Server Service Error Management
  ACC-VC	Agent Client Collector for Visibility - Content Agent Client Collector Framework Discovery [com.snc.discovery] plugin
  ACC-M	Agent Client Collector Framework Agent Client Collector Monitoring Event Management and Service Mapping Core Metric Intelligence - [com.snc.sa.metric] plugin
  ACC-L	Agent Client Collector Framework Agent Client Collector Log Analytics Health Log Analytics
  DEX	Agent Client Collector Framework ITOM Cloud Services Core [sn_itom_cloud_svc]

  You can verify that these plugins are installed on the System Definitions > Plugins page.

  All plugins that come with the base system are signed with the ServiceNow certificate. Optionally, you can use custom plugins and sign them using your own certificate, as described in Enable OpenSSL secure signing for plugins.

• Ensure that your system has the minimum requirements for agent installation.

  Tabela 1. Minimum installation requirements

  Agent Client Collector component	Requirements
  Agent Client Collector Framework	1 GB RAM 300 MB free disk space 1 CPU core
  Agent Client Collector Monitoring	1 GB RAM 1 GB free disk space 1 CPU core
  Agent Client Collector for Visibility - Content	1 GB RAM 1 GB free disk space 1 CPU core

• Ensure that you’re installing Agent Client Collector on one of the supported operating system distributions. For details on the supported operating systems, see Agent Client Collector Framework in the ServiceNow® Store.

  Tabela 2. Supported Operating System Distributions

  Operating System	Distribution
  Linux	Red Hat Enterprise Linux - RHEL and Oracle Linux - OL 7, 8, 9 CentOS 7, CentOS Stream 8 and 9 SLES 12, 15 Ubuntu 18.04, 20.04 LTS Amazon Linux 2 AMIs
  Windows (ACC-M and ACC-L are supported only on servers, not endpoints)	Windows Server 2012, 2012r2, 2016, 2019, 2022 Windows 10 Enterprise Edition Windows 11 Professional and Enterprise
  macOS (on x86_64 only. ACC-M and ACC-L are supported only on servers, not endpoints)	Catalina Big Sur Monterey Sonoma

  Tabela 3. Supported Operating System Distributions

  Operating System	Distribution
  Linux	Red Hat Enterprise Linux - RHEL and Oracle Linux - OL 7, 8, 9 CentOS 7, CentOS Stream 8 and 9 SLES 12, 15 Debian 9, 10, 11 Ubuntu 18.04, 22.04, 24.04 LTS Amazon Linux 2 AMIs Amazon 2023 Rocky Linux 8 and 9
  Windows (ACC-M and ACC-L are supported only on servers, not endpoints)	Windows Server 2012, 2012r2, 2016, 2019, 2022 Windows 10 Enterprise Edition Windows 11 Professional and Enterprise Windows 11 Surface on ARM64
  macOS (on both x86_64 and arm64 (Apple Silicon) architectures. ACC-M and ACC-L are supported only on servers, not endpoints)	Catalina Big Sur Monterey Ventura Sequoia

When using ACC-L: The Agent Client Collector comes with the default servicenow user. Ensure that this user has read access to enable Agent Client Collector to view all the configured log paths. For example, the Agent Client Collector servicenow user that comes installed with the base system does not have permissions to view the paths to /var/log/ in Linux and C:\Windows\System32 in Windows. For information about configuring permissions for the servicenow user, see the ACC-L Permission Denied issues [KB1117271] article in the Now Support Knowledge Base.

When determining the number of machines and servers needed to support your agents (such as the number of machines requiring proxy agents), consider the agents' performance KPIs. For details on agent performance KPIs, see Agent Client Collector performance and footprint for URL monitoring.