Resource Manager 6.5.0
This section contains important information about release 6.5.0 of Zenoss Resource Manager (Resource Manager).
The focus of this release is improved zenhub performance and reporting capabilities:
- The zenhub service now handles device configuration requests more quickly.
- Enterprise reports includes updated support for organizers.
In addition, the following updates to core components are included in this release:
- MariaDB is updated to version 10.3.
- The RelStorage library is updated to version 3.0.
- The Twisted library is updated to version 19.10.
Finally, the self-monitoring features now include sending notifications when jobs are stuck. An event is sent when there are jobs in the zenjobs (Celery) queue but none have been processed for 10 minutes.
Considerations and workarounds
Compatibility with Zenoss Service Impact
This version of Resource Manager is compatible with Zenoss Service Impact version 5.5.2 or later. All users are strongly encouraged to upgrade Service Impact to the latest version.
Please note the following update considerations:
- Resource Manager 6.5.0 requires Control Center 1.7.0. Please update Control Center before updating Resource Manager.
- New for this release: A python script to manage custom MariaDB passwords before updating, which preserves custom passwords.
- Virtual appliance installation and update files are based on CentOS 7.6 and include Control Center 1.7.0 and Service Impact 5.5.1.
- Due to the RelStorage library update, the Resource Manager 6.5.0 update process supports only releases 6.4.1, 6.4.0, and 6.3.2.
To update earlier releases of Resource Manager to 6.5.0, first update to release 6.4.1.
- Due to the Twisted library update, the Layer2, OpenStack and OpenStackInfrastructure Zenpacks must be updated to their most recent releases before Resource Manager can be updated to release 6.5.0. Other ZenPacks that use the Twisted library may be affected, too.
During updates to release 6.5.0, the following message appears several times during the MariaDB update and can be ignored:
Regular expression matching limitation
(ZEN-29376) Resource Manager uses the Apache Solr search platform, which tokenizes fields. Currently, searching a tokenized field with a regex matches only a single token, limiting complex regex searches.
For example, on the INFRASTRUCTURE page, IP Address is a tokenized field. Regex search ^192.168 will not work to filter only IP addresses that start with 192.168. The Device column is untokenized; regex search on the device name works as expected.
NFS client 4.1 is not supported
A file locking defect might exist in NFS 4.1 with RHEL/CentOS 7.4, which could cause zeneventserver to crash and other DFS-related problems. For more information, see Configuring NFS 4.0 or knowledge base article Potential Issues Running With RHEL 7.4 Or CentOS 7.4.
CentralQuery maximum memory allocation pool
(ZEN-15907) The size of the CentralQuery maximum memory allocation pool is set by the RAMCommitment variable in the CentralQuery service definition. The default value is 1024MB. Do not change the value to anything less than 1024MB.
(ZEN-31194) This release includes LDAPAuthenticator v3.3.3, which no longer includes an option to skip SSL certificate verification during installation or upgrade. If you are using a self-signed certificate, upload it before upgrading. For more information, see Adding an SSL certificate.
The documentation for this release includes a new publication, the Upgrade Guide for High-Availability Deployments. The document includes procedures for performing an update from recent releases of Control Center and Resource Manager to Control Center 1.7.0 and Resource Manager 6.5.0.
Device re-identification can slow or hang the system
(ZEN-32859, ZEN-31163) Re-identifying a device can cause the OpenTSDB reader service to open many connections to OpenTSDB, which in turn can slow or hang the system. This issue occurs when the re-identification is initiated through both the API and the browser interface. To prevent the issue, do not retain performance data when re-identifying devices.
On installation, the OpenTSDB database now uses 4 bytes instead of 3 bytes for the UID field. This means that
- the maximum number of data points (metric values) the database can store is now greater than 4.2 billion, up from approximately 16.7 million
- the database requires more storage space (approximately 1 byte more per stored data point)
Updates from previous releases do not get the larger field size; only new installations.
In a future release of Resource Manager, the visualization features of the DynamicView ZenPack will be deprecated (removed). For example, the component relationships of a device will not be visualized.
Tested operating environments
The Resource Manager application is deployed in and managed by Control Center. The operating environments of Resource Manager are the Control Center environments that are tested with a given release. The following sections identify the tested operating environments of Resource Manager and Control Center.
Resource Manager, Control Center, and operating systems
The following table identifies the tested combinations of Resource Manager, Control Center, and operating system releases.
|Resource Manager release||Control Center|
|Minimum release||Host OS|
|6.5.0||1.7.0, 1.8.0||RHEL/CentOS 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8 (64-bit)|
|VMware vSphere||5.0, 5.1, 5.5, 6.0, 6.5|
|Microsoft Hyper-V||Version 2.0 with Windows Server 2008 R2 SP1|
|Version 3.0 with Windows Server 2012 and 2012 R2|
Public cloud platforms
Amazon Web Services (AWS) is fully tested.
Microsoft Azure has been tested only for collector pools. Creating a full Control Center deployment to operate Resource Manager has NOT been tested on Microsoft Azure.
|ZEN-32882||Maintenance windows for ComponentGroups can leave components in incorrect production state|
|ZEN-32649||Similar database metrics of the RM Monitor data type get incorrect data point values|
|ZEN-32626||Snapshots and backups fail when mariadb-model and mariadb-events passwords do not match|
|ZEN-32619||The metrics of the zenhub service become inaccurate over time|
|ZEN-32596||Update fails if custom database passwords are in use|
|ZEN-32595||The MariaDB service definition causes startup/shutdown, logging and upgrade issues|
|ZEN-32582||Event summaries that contain angle bracket characters are not properly displayed|
|Services do not stop cleanly, leading to loss of log data or application data corruption|
|ZEN-32561||Unable to export the event archive to a CSV file|
|ZEN-32560||Unable to initiate device modeling from browser if device name includes the space character|
|ZEN-32559||The zenmodeler service hangs when it attempts to model a non-existent device organizer|
|ZEN-32558||The zenpop3 service hangs with passing health checks when it receives a login failure|
|The zenhub service's performance degrades over time|
|ZEN-32525||The MetricConsumer service eventually consumes all of the CPU resource|
|ZEN-32508||Some Enterprise Reports > Organizer Graphs do not display data|
|ZEN-32504||Unable to create a new logical hub by cloning|
|ZEN-32496||OpenTSDB is limited to 16,777,215 UIDs|
|ZEN-32473||MariaDB commit locks written for relstorage 2.0 do not work with MariaDB 10.1|
|ZEN-32418||Unable to view specific metrics when manipulating a graph|
|ZEN-32417||The zenhub service hangs on large requests for device configurations from workers|
|ZEN-32401||The zenping service uses the wrong configuration file when invoked with |
|Update occasionally fails to migrate the zenhubworker service definition|
|Log messages in zencommand service log indicate missed runs|
|The Site Window portlet does not show graphs|
|ZEN-32181||Unable to monitor Azure account|
|ZEN-32175||Traceback when modeling Linux devices|
|ZEN-32165||The zenhubworker services wait too long to reconnect to the zenhub service|
|ZEN-32097||Containers include pyraw, which is vulnerable to privilege escalation attacks (pyraw removed)|
|ZEN-32015||The zentrap service blocks the collectorCalls queue with useless createUser messages|
|ZEN-31238||Unable to monitor MariaDB services when custom passwords are in use|
|ZEN-22183||In Enterprise Reports, Organizer Graphs are not displayed|
|Re-identifying a device can cause the OpenTSDB reader service to open many connections|
|ZEN-32385||The ssh client does not handle timeouts gracefully|
|ZEN-30767||SNMP v3 traps displays as v2 traps in events|
|ZEN-29210||Jobs started by ZenJobs are stalling and blocking other jobs|
This section lists ZenPacks that are automatically installed, those that are packaged but not installed, and those that are obsolete and should be uninstalled. For more information about ZenPacks, see the ZenPack Catalog.
This release of Resource Manager installs the following ZenPacks at the current version listed in the table.
† In a future release of Resource Manager, the visualization features of the DynamicView ZenPack will be deprecated (removed). For example, the component relationships of a device will not be visualized.
The following ZenPacks are packaged with Resource Manager, but not automatically installed:
ZenMailTX is obsolete. If this ZenPack is installed at your site, uninstall it.