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    Container Service for Kubernetes:ack-sysom-monitor component release notes

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    Container Service for Kubernetes:ack-sysom-monitor component release notes

    Last Updated:Jul 29, 2025

    ack-sysom-monitor is a kernel-level container monitoring component for operating systems provided by Container Service for Kubernetes for ACK clusters. This topic describes the basic information, usage notes, and release notes of the ack-sysom-monitor component.

    Component introduction

    System Operation & Maintenance (SysOM) is a one-stop operating system O&M platform developed by the OpenAnolis community SysOM SIG. You can use this platform to perform complex operating system management tasks, such as host management, system monitoring, abnormal diagnosis, log audit, and security control. As a monitoring component of SysOM, ack-sysom-monitor collects and enhances metrics at the kernel layer. ack-sysom-monitor has low resource consumption and uses the eBPF technology to collect in-depth metrics about nodes and containers. The component can be used in scenarios such as system jitter, high latency, resource leaks, and abnormal pod memory. For more information, see SysOM kernel-level container monitoring.

    In addition, the ack-sysom-monitor component exposes monitoring metrics that are based on standard Prometheus metric definitions. For more information about the metrics, see Metric description.

    Billing of ack-sysom-monitor

    After the ack-sysom-monitor component is enabled, related components automatically send monitoring metrics to Managed Service for Prometheus. These metrics are considered as custom metrics. Fees are charged for custom metrics.

    Before you enable this feature, we recommend that you read Billing overview to understand the billing rules of custom metrics. The fees may vary based on the cluster size and number of applications. You can follow the steps in View resource usage to monitor and manage resource usage.

    Usage notes

    For more information about how to use the ack-sysom-monitor component, see Enable the ack-sysom-monitor monitoring feature.

    Change history

    July 2025

    Version number

    Image address

    Change time

    Change description

    Impact

    1.1.2

    registry-vpc.{{.Region}}.aliyuncs.com/acs/ack-sysom-monitor:v1.1.2-94a45de-aliyun

    2025-07-28

    • Fixed an issue where pod cache files were not scanned.

    • Fixed a configuration-related security issue.

    This upgrade does not affect your services.

    May 2025

    Version number

    Image address

    Change time

    Change description

    Impact

    1.1.1

    registry-vpc.{{.Region}}.aliyuncs.com/acs/ack-sysom-monitor:v1.1.1-9300977-aliyun

    2025-05-27

    • ACK 1.33 is supported.

    • Fixed an issue that causes occasional startup errors.

    This upgrade does not affect your services.

    October 2024

    Version number

    Image address

    Change time

    Change description

    Impact

    1.1.0

    registry-vpc.{{.Region}}.aliyuncs.com/acs/ack-sysom-monitor:v1.1.0-6dcd0ef-aliyun

    2024-10-28

    • Fixed an issue where cgroup v2 failed to detect container changes.

    • Fixed a startup error.

    This upgrade does not affect your services.

    August 2024

    Version number

    Image address

    Change time

    Change description

    Impact

    1.0.9

    registry-vpc.{{.Region}}.aliyuncs.com/acs/ack-sysom-monitor:v1.0.9-ce26b3a-aliyun

    2024-08-09

    • The Arm64 architecture is supported.

    • cgroup v2 is supported.

    • The GPU memory monitoring feature is supported.

    • The Pod File Cache panel is updated to display node cache files and shared memory.

    This upgrade does not affect your services.

    May 2024

    Version number

    Image address

    Change time

    Change description

    Impact

    1.0.8

    registry-vpc.{{.Region}}.aliyuncs.com/acs/ack-sysom-monitor:v1.0.8-27e0d9c-aliyun

    2024-05-17

    • You can use a ConfigMap to configure whether to expose metrics for SysOM features.

    • By default, data of the system namespace is exposed.

    • Pod cache file monitoring is updated to support monitoring the cache file usage of the root cgroup.

    • Fixed an issue where memory revocation latency data was missing in CentOS.

    • Fixed an issue that causes abnormal pod CPU utilization.

    This upgrade does not affect your services.

    December 2023

    Version number

    Image address

    Change time

    Change description

    Impact

    1.0.7

    registry-vpc.{{.Region}}.aliyuncs.com/acs/ack-sysom-monitor:v1.0.7-5d8a59d-aliyun

    2023-12-12

    • Fixed the double free issue in PodMem.

    • Fixed an issue where the BTF file was incorrectly identified in kernel version 5.10 for PodMem.

    • Fixed an issue where the network interface card failed to be parsed when the number of metric dimensions of the container network plugin was excessively large.

    • Fixed an issue of missing data in PodMem in CentOS 7.9 with kernel version 3.10 due to the lack of kpagecgroup.

    This upgrade does not affect your services.

    September 2023

    Version number

    Image address

    Change time

    Change description

    Impact

    1.0.5

    registry-vpc.{{.Region}}.aliyuncs.com/acs/ack-sysom-monitor:v1.0.6-0085be5-aliyun

    2023-09-21

    Supported operating system kernel-level monitoring of node and pod memory.

    This upgrade does not affect your services.