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General System Requirements

This topic describes the general system requirements for installing applications with the Replicated app manager.

There are additional requirements specific to installing an application on an existing cluster and installing an application on a cluster created by the Kubernetes installer.

For more information about requirements for existing clusters, see Cluster requirements.

For more information about requirements for the Kubernetes installer, see Kubernetes installer requirements.

Note: This topic does not include any requirements specific to your software vendor. Ensure that you meet any additional requirements for the application defined by your software vendor.

Supported Browsers

This section describes the browser requirements for the latest Replicated admin console.

Safari (Mac OS only)13+
Internet ExplorerUnsupported

Kubernetes Version Compatibility

Each release of the open source KOTS project maintains compatibility with the current Kubernetes version, and the two most recent versions at the time of its release.

Note: The app manager is based on the open source KOTS project. The app manager version is the same as the KOTS version. For example, KOTS v1.48 is the same as the app manager v1.48.

This includes support against all patch releases of the corresponding Kubernetes version.

KOTS versionsKubernetes compatibility
v1.11 to v1.14v1.17, v1.16, and v1.15
v1.15 to v1.19v1.18, v1.17, and v1.16
v1.20 to v1.35v1.19, v1.18, and v1.17
v1.36 to v1.47v1.20, v1.19, and v1.18
v1.48 to v1.59.2v1.21, v1.20, and v1.19
v1.59.3 to v1.60v1.22, v1.21, and v1.20
v1.61 and laterv1.23, v1.22, v1.21, and v1.20

Firewall Openings for Online Installations

The following domains need to be accessible from servers performing online installations. For a list of IP addresses for these services, see replicatedhq/ips in GitHub.

HostExisting Cluster InstallationEmbedded Cluster InstallationDescription
Docker HubRequiredRequiredSome dependencies of KOTS are hosted as public images in Docker Hub.
proxy.replicated.comRequiredRequiredUpstream Docker images are proxied via The on-prem docker client uses a license ID to authenticate to This domain is owned by Replicated, Inc which is headquartered in Los Angeles, CA.
replicated.appRequiredRequiredUpstream application YAML and metadata is pulled from The current running version of the application (if any) will be sent, in addition to a license ID and an application IDs are sent to to authenticate and receive these YAML files. This domain is owned by Replicated, Inc which is headquartered in Los Angeles, CA.
k8s.kurl.shNot RequiredRequiredKubernetes cluster installation scripts and artifacts are served from An application identifier is sent in a URL path, and bash scripts and binary executables are served from This domain is owned by Replicated, Inc which is headquartered in Los Angeles, CA.
amazonaws.comNot RequiredRequiredtar.gz packages are downloaded from Amazon S3 during embedded cluster installations. For information about dynamically scraping the IP ranges to allowlist for accessing these packages, see AWS IP address ranges in the AWS documentation.

No outbound internet access is required for airgapped installations.