Agent best practices
One agent per host
Avoid running more than one Unified Agent instance on the same host with the same configuration files since that might cause problems with the agent.
Agent monitoring
When using Unified Agent, we recommend that you enable collecting health metrics for the agent.
To do so, add to the agent configuration a delivery route with the agent_metrics input. Sample configuration:
status:
port: 16241
routes:
- input:
plugin: agent_metrics
config:
namespace: ua
channel:
pipe:
- filter:
plugin: filter_metrics
config:
match: "{scope=health}"
output:
plugin: yc_metrics
config:
folder_id: "$FOLDER_ID"
iam:
cloud_meta: {}
See also agent_metrics input.
Using storage
Use a storage to reliably deliver metrics to Yandex Monitoring with Unified Agent. It will let you temporarily store messages sent over a pipe before being passed on to the channel output.
Using a storage can help you avoid data loss if the agent fails to write the data to the specified output (including repeat attempts). That might happen because of network issues or destination API unavailability.
Sample agent configuration with a storage:
status:
port: 16241
storages:
- name: main
plugin: fs
config:
directory: /var/lib/yandex/unified_agent/main
max_partition_size: 1gb
max_segment_size: 500mb
channels:
- name: cloud_monitoring
channel:
pipe:
- storage_ref:
name: main
output:
plugin: yc_metrics
config:
folder_id: <folder_ID>
iam:
cloud_meta: {}
routes:
- input:
plugin: linux_metrics
config:
poll_period: 15s
namespace: sys
channel:
channel_ref:
name: cloud_monitoring
See also Storages.