Remote Unix Monitoring 2.0

Remote Unix Monitoring 2.0

Extension that remotely collects Unix OS data by executing commands via SSH.

Extension

Free trial Documentation

Product information
Release notes

Overview

Overview

Unix/Linux is often used to run critical applications. A OneAgent is the best way to monitor such systems, however this is not always possible. Legacy unsupported versions or agreements with vendors may prevent you from installing a OneAgent on these important hosts. In these cases you can use the Remote Unix Monitoring extension to collect valuable telemetry on your hosts and the applications they are running. It works by connecting to your Unix/Linux hosts over SSH and running commands.

Use cases

Monitor and alert on important host metrics
Monitor the availability and resource usage of your key processes and applications
Identify host availability issues

Compatibility information

The following OSs are explicitly supported and can be selected in the configuration:

AIX
Centos
FreeBSD
HP-UX
MacOS
Oracle Linux
Red Hat Enterprise Linux (RHEL)
Solaris
Suse

Many other distributions such as Ubuntu can be monitored by selecting 'Debian Linux.'

As a goal of this extension is to provide visibility into systems that cannot be monitored by a OneAgent it does not have the same support policy as other areas of Dynatrace where we support what the vendor supports. Rather we try to support as many distributions as possible regardless of their support status to the best of our ability.

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Extension content

Content typeNumber of items included

screen logs cards

2

screen properties

1

screen layout

4

document dashboard

1

screen chart groups

6

list screen layout

2

screen events cards

2

screen entities lists

3

screen dql table

12

metric metadata

51

generic relationship

1

dashboards

1

screen metric tables

11

generic type

2

Feature sets

Below is a complete list of the feature sets provided in this version. To ensure a good fit for your needs, individual feature sets can be activated and deactivated by your administrator during configuration.

Feature setsNumber of metrics included

Metric name	Metric key	Description	Unit
Mount used	remote_unix.mount_used	Mount space in use	Byte
Mount capacity	remote_unix.mount_capacity	Overall capacity of the mount	Percent
Mount available	remote_unix.mount_available	Mount space available	Byte

Metric name	Metric key	Description	Unit
CPU Utilization	remote_unix.cpu_utilization	Overall CPU utilization	Percent
CPU User	remote_unix.cpu_user	Percentage of time the processor spent executing user/application code	Percent
CPU System	remote_unix.cpu_system	Percentage of time the processor spent executing system/kernel	Percent
CPU Idle	remote_unix.cpu_idle	Percentage of time the processor was idle	Percent
Individual CPU user time	remote_unix.individual_cpu_time_user	Percentage of time individual CPU spent executing user/application code	Percent
Individual CPU system time	remote_unix.individual_cpu_time_system	Percentage of time individual CPU spent executing system/kernel code	Percent
Individual CPU idle time	remote_unix.individual_cpu_time_idle	Percentage of time individual CPU was idle	Percent
Individual CPU iowait time	remote_unix.individual_cpu_time_iowait	Percentage of time individual CPU spent waiting on IO operations	Percent

Metric name	Metric key	Description	Unit
Zpool size	remote_unix.zpool_size	Zpool total size	Byte
Zpool allocated	remote_unix.zpool_allocated	Zpool space allocated	Byte
Zpool free	remote_unix.zpool_free	Zpool space free	Byte
Zpool capacity	remote_unix.zpool_capacity	Zpool used percent	Percent

Metric name	Metric key	Description	Unit
Disk latency (average)	remote_unix.disk_average_latency	Disk latency (average)	MilliSecond

Metric name	Metric key	Description	Unit
Network bytes receieved	remote_unix.network_bytes_received_count	Network traffic (in bytes) incoming per interface	Byte
Network packets received	remote_unix.packets_received_count	Network traffic (in Packets) incoming per interface	Count
Network errors incoming	remote_unix.network_errors_incoming_count	Network errors on incoming traffic per interface	Count
Packets dropped incoming	remote_unix.packets_dropped_incoming_count	Incoming packets dropped per interface	Count
Network bytes sent	remote_unix.network_bytes_sent_count	Outbound network traffic (in bytes) per interface	Byte
Network packets sent	remote_unix.packets_sent_count	Outbound network traffic (in packets) per interface	Count
Network errors outgoing	remote_unix.network_errors_outgoing_count	Network errors on outgoing traffic per interface	Count
Packets dropped outgoing	remote_unix.packets_dropped_outgoing_count	Outgoing packets dropped per interface	Count

Metric name	Metric key	Description	Unit
Availability	remote_unix.availability	Availability of host based on initial SSH connection	Percent
Waiting processes	remote_unix.waiting_processes	Number of processes waiting for processor time	Count
User count	remote_unix.users	Number of users on the system	Count
Load average (1 min)	remote_unix.load_avg_1_min	One minute load average	Count
Load average (5 min)	remote_unix.load_avg_5_min	Five minute load average	Count
Load average (15 min)	remote_unix.load_avg_15_min	15 minute load average	Count

Metric name	Metric key	Description	Unit
Top process CPU usage	remote_unix.top_process_cpu	CPU usage of a 'top' resource consuming detected process	Percent
Top process memory usage	remote_unix.top_process_size	Memory usage of a 'top' resource consuming detected process	Byte

Metric name	Metric key	Description	Unit
Paged in	remote_unix.paged_in	Memory pages swapped in from disk	PerSecond
Paged out	remote_unix.paged_out	Memory pages swapped to disk	PerSecond
Physical memory free	remote_unix.physical_memory_free	Amount of memory free as seen by OS	Byte
Physical memory used percent	remote_unix.physical_memory_used_percent	Percentage of memory used as seen by OS	Percent
Swap free	remote_unix.swap_free	Amount of swap space free	Byte
Swap total	remote_unix.swap_total	Total swap space available on system	Byte
Swap used percent	remote_unix.swap_used_percent	Percentage of available swap space in use	Percent
Swap used percent	remote_unix.swap_free_percent	Percentage of available swap space not in use	Percent

Metric name	Metric key	Description	Unit
Disk read	remote_unix.disk_read_count	Amount of data read from disk	Byte
Disk write	remote_unix.disk_write_count	Amount of data written to disk	Byte
Disk read operations	remote_unix.disk_read_ops	Reads from disk	PerSecond
Disk write operations	remote_unix.disk_write_ops	Writes to disk	PerSecond
Bytes per transfer	remote_unix.bytes_per_transfer	Bytes per transfer	Byte
Disk transfers	remote_unix.transfers	Disk transfers	Count

Full version history

To have more information on how to install the downloaded package, please follow the instructions on this page.

ReleaseDate

Full version history

⚠️ NOTE: This version requires a minimum Dynatrace and ActiveGate version of 1.313.0 or later

🚀 Improved in this version:

Dynatrace Error codes (DECs) are now present in errors to assist in troubleshooting.
Statuses are reported per endpoint.

Full version history

Minimum ActiveGate version is `1.309`

Features

The credential vault can now be used for key based authentication
Creation of an availability error event on connection issues can now be disabled in advanced settings

Improvements

The use of a timeout prefix on all commands is now configurable and disabled by default
- Rare setups were found where this prefix caused the extension to hang
- It can still be enabled as a fail-safe for systems which do not have the hang issue, however there have been no cases where this functionality was required to resolve an issue

Full version history

NOTE: This release requires a minimum ActiveGate version of 1.309.0 or later.

New in this version:

dt.security_context is attached to entities.
A New Dynatrace Dashboard has been added for use in the latest Dynatrace.

Full version history

Requires ActiveGate 1.279+

Improvements

Fastcheck changed from ssh login and command test to simple tcp check
- Faster and not affected by issues such as bad credentials
pgrep filters for user now use the "effective" user
device.address added to all metrics
Several improvements to prevent rare cases where commands would 'hang' indefinitely
- Includes 'timeout' prefix to all commands (where available)
Logging improvements

Fixes

AIX: skip filesystems such as /aha which will not have data when reporting mounts
AIX: fix issue that prevented some properties from being reported
AIX: fix issue that would prevent some process filters from matching
Avoid issue where same filesystem could be reported multiple times
Handle newly identified vmstat outputs
Fix issue that prevented 'Availability event' from being reported

Features

Configurable frequency
Platform updates for compatibility with IO app

Full version history

Changes

Configuration option to only collect local mounts
Longer connection timeouts allowed when using persisted connection
More connection debugging options available
Reclaimable memory now considered for AIX memory metrics
'Do not merge' property set on availability event when unable to connect
Detection of hangs when reading from standard output

Fixes

df output now correctly reports sizes using base 2 interpretation of command output on Solaris and AIX (e.g. 1K = 1024 bytes instead of 1000 bytes as in base 10). This will result in a slight increase in the values of absolute metrics though the percentage will stay the same. Note that despite this, the Dynatrace UI still uses base 10 for the units so while the number of bytes will be the same you may see different numbers because the UI would show Gigabytes while the df command outputs Gibibytes.

Full version history

considers buffer and cache space in reporting available memory on some older Unix distributions
handles reporting of values with the largest units (E, Z, and Y)
fix bug in reporting of MacOS disk transfers metric
adds missing metric metadata for some MacOS-specific metrics

Full version history

Corrects issue in build process that would prevent the previous 2.2.7 version from running on old ActiveGate OSs (e.g. RHEL 7.9)

Full version history

Sets source entity metadata for all metrics to work with management zones

Full version history

Default the optional remote host group value to "default"
- Primarily to ensure metric tables/charts/selectors will not break when not set

Full version history

Fixes bug in AIX where certain output of the 'df' command could cause processing of mount data to break
Increases filtered process pattern length limit to 1000

Full version history

New Solaris Z Pools feature set
Scalability-focused features
- Monitoring configuration-wide 'default' authentication possible
- Configuration available for a 'remote host group' entity to help with organizing remote unix entities
- Raises endpoint limit to 500
- Must use the new Task bucket size configuration to break the endpoints into smaller assignable task units
Fix for issue on AIX where memory metric absolute values were incorrectly scaled to be larger than their actual values (did not affect 'percentage' based metrics)

Full version history

Fix issue for some distributions that would result in missing data for the disk-level "bytes written" metric

Full version history

New 'extended-disk' feature set
- Supported for most 'standard' Debian based Linux distributions
- Includes an additional run of iostat with the 'extended' option to report latency
Attempts to include IP addresses and a detected hostname property
- Restore behavior present in original 1.0 extension

Full version history

Fix issue where configured key path may not have properly been used for authentication

Full version history

Fix bug with how failures in the fastcheck would be reported in some scenarios

Full version history

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