![]() ![]() The Machine Agent can monitor all containers that are running on that host, subject to established limits, and will report runtime metrics and metadata for every container.The Machine Agent collects hardware metrics for each monitored container, as well as Machine and Server metrics for the host, and forwards the metrics to the Controller Tenant. Install the Machine Agent in a standalone container.This diagram illustrates how to deploy container monitoring: You can make these links read-only because the AppDynamics Agent does not need write privileges to these directories. To grant more restrictive permissions, enter this command to create symbolic links: ln -s /proc /hostroot/proc ln -s /sys /hostroot/sys ln -s /etc /hostroot/etc. When you deploy a Machine Agent inside a Docker container for monitoring, the symbolic link is automatically created when the volume mounts. To deploy a Machine Agent on a host outside a Docker container, create a symbolic link: ln -s / /hostroot on the host. This symbolic link enables the Machine Agent to collect host metrics with Docker container metrics. You can change this by setting the property on the Controller Tenant. See Controller Settings for Server Visibility. If the Machine Agent If the Machine Agent >=20.7.0, the Machine Agent automatically registers the container using the container ID as the host ID.See Using Docker Visibility with Kubernetes. When using Docker Visibility, if the unique host ID setting is not configured to use container ID in host network mode, the Machine Agent automatically registers the container using the container ID as the host ID. If you have an older version of the Controller Tenant or Machine Agent, AppDynamics recommends that you upgrade to Machine Agent version 20.7 or later. See Register the Container ID as the Host ID. In this case, you need to use the unique host ID settings. This means every container on that node has the same host ID. If networking is in host mode, then the containers take on the node name of the host ID. In a BRIDGE networking mode, the containers take on the container ID as the hostname. The Controller Tenant shows all monitored containers, for each host, and the container and host IDs, for each container. ![]() The Machine Agent collects metrics for Docker containers on the same host, and server and machine metrics for the host itself. You should deploy the Machine Agent inside a Docker container. Container monitoring requires a Server Visibility license >=4.3.3, for both the Controller Tenant and the Machine Agent.
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