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Foglight Agent Manager 5.9.7 - Foglight Agent Manager Release Notes

Resolved issues and enhancements

Resolved issues and enhancements

The following is a list of issues addressed and enhancements implemented in this Foglight Agent Manager release.

Defect ID

Resolved Issue


Fixed the vulnerabilities CVE-2016-5007/CVE-2016-9878/CVE-2018-15756.


Fixed the issue that Foglight Management Server failed to get Agent Manager IP address in new Linux distributions.


Known issues

Known issues

The following is a list of issues known to exist at the time of this release. 

Defect ID

Known Issue


The connection test via installation GUI or headless would take about 2 minutes when FglAM and FMS are in different FIPS modes.


Agents fail to monitor the WinServer2019 Domain Controller via DCOMWindowsCommandShell connection.


HA failover fails and Agent Manager Agents become broken, once the Management Server deployed in the HA environment is restarted.


The Infrastructure agent fails to collect the data due to the "Failed setting a value for obsolete node:" error.


Part of data collected on the Host dashboard is missing due to ConnectionBrokenException.


The CPU usage of the Agent Manager constantly reaches 100%.


The "sqlserv.exe process" and "Memory Top Consumers" metrics collected by the Windows Agent are incorrect. 
Workaround: When FglAM running in Linux to monitor Windows, it is recommended to use WinRM instead of WMI.


Many errors show in the Agent Manger log and there is no data displayed on the VMware dashboard.


The Agent Manager version number is incorrect on the Script Console dashboard, after being upgraded to from


FglAM-Adapter-Devkit-6.1.3 is missing after the Agent Manager is upgraded from to


FglAM running on Linux/Solaris fails to connect to the target host through link-local IPv6 WMI, if multiple network interfaces exist in the target host.
1. Log into the target host.
2. Execute the dos command->ipconfig/all command, to check how many tunnel interfaces which contain IPv6 address.
3. If only Tunnel adapter Teredo Tunneling Pseudo-Interface and Ethernet adapter Local Area Connection exist in the target host, uninstall/disable Teredo Tunneling Pseudo-Interface, and then check if the WMI connection can be established. 


WinRMCommandShell returns empty output when using BAT scripts.


WMI connection cannot be established successfully when using the IPv6 address to monitor the target host.
1. Set the agent's target host address and credential resource mapping to the long form, for example: fc00:0:0:0:0:0:a1e:9804.
2. Check if the WMI connection can be established. If not, change the agent's target host address from long form to compressed form (fc00::a1e:9804). If this solution still does not work, check the workaround in FAM-7193.


Agents will be broken (FMS deletes them), after changing FglAM host name, IP, or display name. The agents will be recreated when the FglAM starts with the original FglAM display name.


Cannot deploy multiple HA-aware gars to a standby host at one time.

  1. Log in to http://<foglight_home>:8080/jmx-console, and then click name = HAManager.

  2. In the page that opens, click Invoke for the diagnosticSnapshotAsString() API.

  3. Find the appropriate primary HA host (mState = PRIMARY).

  4. Log in to http://<foglight_home>:8080/, and then go to Dashboards > Administration > Agents > Agent Managers.

  5. Select the primary HA host found in step 3, and click Deploy Agent Package.

  6. In the dialog box that appears, select multiple agent packages to deploy.

  7. Click Next, and then click Finish to start the deploy task.
    When the deploy task completes, the agent packages deployed to the primary host will be automatically deployed to the standby host in a few minutes.


HA failover fails and the value of mState on standby peers changes to MISSING_LOCKBOX in JMX console.
Workaround: If the failure of HA failover is caused by MISSING_LOCKBOX (Check the HA partitions info by navigating to JMX console > HAManager > diagnosticSnapshotAsString()), perform either of the following options to resolve this issue:
1. On the navigation panel, under Dashboards, click Administration > Credentials > Manage Lockboxes. In the Manage Lockboxes dashboard, release the missed lockboxes to the MISSING_LOCKBOX FglAM client. If you cannot find the missed lockboxes, perform step 2.
2. On the FglAM client that has the MISSING_LOCKBOX status, navigate to <fglam_home>\state\<state_name>\credentials. Clean up all files under this directory, and then restart the FglAM. After the restart completes, release all lockboxes as Primary in the Administration > Credentials > Manage Lockboxes dashboard.


There are duplicate IP addresses for different FglAM instances (running on Linux) in the Agent Managers dashboard, if the FglAM servers are cloned virtual machines.
Workaround 1:

  1. Go to the monitored host, and then execute the following commands:
    su root
    rm -f /etc/machine-id

  2. Restart the FglAM. Restart the operating system if this issue still exists after restarting the FglAM.

Workaround 2:

  1. Set = false for all FglAM instances in the <fglam_home>/state/<state_name>/config/client.config file.

  2. Change the display name in the <fglam_home>/state/<state_name>/config/fglam.config.xml file, and then restart the FglAM.

Workaround 3: If you have cloned the servers, do not start up the FglAM. Set = false for all FglAM instances in the <fglam_home>/state/<state_name>/config/client.config file, and then start the FglAM for the first time.


Agent is not listed under "agents" property of FglAMClientInstance or Host object after moved.


Support is required for installing and running Agent Manager on a system with SELinux enabled.


Upgrades from 5.7.4 to 5.8.1 or 5.8.2 may result in an error during the upgrade process.

Workaround: If you are currently running a 5.7.4 install and you want to upgrade, then you must upgrade to version 5.8.5 or later.


Foglight Log Monitor does not support UNC (Universal Naming Convention) paths.

Workaround: The following workaround applies when monitoring local log files. Monitoring remote log files is not supported.

  1. Map the UNC path to a drive letter on the local machine running the Agent Manager.

  2. If any monitored log files are residing in the UNC path, point the Log Monitor Agent to this location using the mapped drive letter, not its UNC path.


Installing and configuring multiple Foglight Agent Manager instances on a single physical host can cause some topology churn in the Host model representing the Agent Manager.

Workaround: By default, the Agent Manager submits performance metrics about itself. If multiple Agent Manager instances are running on the same physical host, disable the performance monitoring self-metric submission for each Agent Manager Instance by completing the following steps:

  1.  Open the $FGLAM_STATE/config/baseline.jvmargs.config file for editing.

  2. Add the following entry to the vmparameter. properties section of the file:

    vmparameter.<X> = "-Dquest.glue.disable.performancemonitor=true";

    Important. You must replace <X> with the next numeric sequence number.

  3.  Save the file.

  4.  Restart the Agent Manager

Additionally, an Agent that submits a Host object representing the monitoring host (for example, an Agent Manager instance that is running and hosting an agent instance) as part of its monitored collection causes a Host topology churn when these agent types are deployed to additional Agent Manager instances running on the same physical host.
If the monitoring agent's type supports it, its configuration should be adjusted to prevent the submission of monitoring host system ID. For example, this configuration is available for the Foglight for Infrastructure Agents and can be disabled by setting the agent instances' Collect System ID property to false.


The Agent Manager vm.config file migration fails under multi-state installs.

Workaround:  The legacy vm.config file is replaced with two new configuration files: client.config and baseline.jvmargs.config. Locate these files within the upgraded Agent Manager state instance. As these file instances may already contain transferred values from the legacy vm.config, review each of the settings in both of these files in order to ensure that these configuration options apply to the Agent Manager state instance that they are being copied into.

  1. Locate the vm.config file within the configuration state directory instance of the Agent Manager. The bottom of the file contains a section for defining vmparameter.x = ""; values. Copy over these settings from vm.config here into the baseline.jvmargs.config file.

  2. Review all of the options declared in vm.config with those of client.config that you have copied over. The client.config file is a super-set of properties from vm.config (with the exception of vmparameter values that are no longer defined here). So each property that exists in vm.config should also exist in client.config. Ensure that each of the common configuration values in the client.config file matches the values in the vm.config, and make any updates, if required.

  3. If the java.vm configuration parameter was set in vm.config, then you should update this option in the new client.config file. When transferring this value over, ensure that the path value is quoted and backslashes escaped. For example:

    Windows: java.vm = "C:\\shared_java_vms\\1.5\\jre";
    Unix: java.vm = "/opt/shared_java_vms/1.5/jre";

  4. After validating that all of the configuration settings are in their new locations, delete the vm.config file and restart the Agent Manager process.


OutOfMemoryError: The Agent Manager cannot create new native thread. It shuts down when the open file descriptor limit is too low.
Workaround: When creating a large number of agents on a single Agent Manager instance, you must ensure that the maximum number of open file descriptors (displayed by the ulimit -n command) is set high enough. 256 is the minimum suggested for an Agent Manager installation and 512 or more is recommended for an Agent Manager hosting up to 15 agents. 1024 is recommended for an Agent Manager hosting more than 15 agents. This value may need to be adjusted even higher if more agents are created on a single Agent Manager install.


The Agent Manager running on Solaris may fail to run local or external commands during startup or through the SSHLocalConnectionImpl class.


Parentheses can cause a command execution to fail while using a LocalWindowsCommandShell connection.

Workaround: If parentheses are used for grouping commands (and not in an echo context), use spaces to separate them from the other tokens in the command. For example, instead of this command:

if 3 gtr 2 (echo "3>2") else (echo "3 leq 2")

Use the following:

if 3 gtr 2 ( echo "3>2" ) else ( echo "3 leq 2" )


Slave processes exist for all installed out-of-process (OOP) agent packages, even if no agent instances are running.

Workaround: OOP packages which are not running any agent instances may be un-deployed from the Agent Manager. Currently, this is only possible using a manual procedure.


The deployed agent scratch directory created for JFogbank-type agents is not deleted during an upgrade.

Workaround: The orphaned directory is benign, and can be manually deleted after the upgrade is complete.


Third party known issues

Third party known issues

This release of the Foglight Agent Manager does not include any third party known issues.


Upgrade and compatibility

Upgrade and compatibility

The 5.9.7 Foglight Agent Manager cartridge requires Foglight Management Server 5.9.2 or later. The cartridge is compatible with all previously released versions of the Agent Manager client application.

Agent Manager upgrades from a 5.5.4.x legacy release require an intermediary upgrade to 5.6.7 prior to upgrading to 5.8.5 or later. To complete this intermediary upgrade, install one or more of the Agent Manager 5.6.7 platform-specific cartridges (as required), and upgrade the legacy hosts to this release before deploying the 5.9.7 Agent Manager cartridge or upgrading the Foglight Management Server to version 5.9.2 or later. After all of the legacy hosts are running version 5.6.7, and the Foglight Management Server is upgraded to version 5.9.2 or later, you can start upgrading your hosts to version 5.9.7.


The following is a list of Foglight product versions and platforms compatible in this release.

Product Name

Product Version


Foglight Management Server 5.9.2 and later All platforms supported by these versions of the Foglight Management Server
Foglight Agent Manager Development Kit 5.9.7 All platforms supported by these versions of the Foglight Agent Manager Development Kit


For more information about upgrading the Management Server and the Agent Manager, see the Foglight Upgrade Guide.

Back up custom JRE certificates before upgrading Agent Manager

When upgrading external Agent Manager, if the new Agent Manager uses a higher version JRE than the old Agent Manager, the JRE trust store (caserts) in the old Agent Manager will be replaced by the new trust store from the higher version JRE. This will cause all the custom certificates imported to the old JRE trust store by customers get lost after the Agent Manager upgrade.

To keep the custom certificates, you need to back up the old JRE trust store before upgrading external Agent Manager, by following below steps:

  1. Verify if the new Agent Manager uses a higher version JRE than the old Agent Manager.
  2. If yes, copy the file <fglam_home>/jre/<current_jre_version>/jre/lib/security/cacerts to a local directory before upgrading Agent Manager.
  3. After Agent Manager is upgraded, replace the cacert trust store with the copied cacert trust store and restart Agent Manager.

As for the embedded Agent Manager, it uses the same JRE as the Management Server. If there are custom certificates stored in JRE trust store and a higher JRE version is used, back up the JRE cacert trust store used by the Management Server before upgrading Management Server.

Note: if the new JRE trust store has different entries than the old JRE trust store, there is a risk that these entries would get lost after replacing with the old JRE trust store.

Below is a list of JRE versions used by Agent Manager on various platforms in this release.


JRE Version











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