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Remote Unix Monitoring 2.0Remote Unix Monitoring 2.0
Extension that remotely collects Unix OS data by executing commands via SSH.
Extension- 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.
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
timeoutprefix 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
pgrepfilters for user now use the "effective" userdevice.addressadded 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
/ahawhich 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
vmstatoutputs - 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
- Initial public release