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OpsCenter 5.1 User Guide
(Not supported)
About OpsCenter
Key features
OpsCenter Architecture Overview
Installation
Installing OpsCenter
Installing OpsCenter with the standalone installer for Mac OS or Linux
Other install methods
Installing DataStax agents
Manually deploying agents - tarball
Manually deploying agents - rpm
Manually deploying agents - deb
Automatic installation of DataStax agents
Setting permissions to run the agent as a different user
Configuring JAVA_HOME for DataStax agents
OpsCenter and DataStax agent ports
Installation and configuration locations
Debian and Ubuntu Package install locations
CentOS, OEL, and RHEL Package install locations
Binary Tarball distribution install locations
Starting, stopping, and restarting OpsCenter
Starting and restarting DataStax agents
Upgrading OpsCenter
Configuration
Configuring role-based security
About user access roles
Enabling authentication in OpsCenter
Managing users and roles
Migrating users to the new password database
Changing the location of the password database
Configuring SSL
Enabling SSL - package installations
Enabling SSL - tarball installations
Disabling SSL - package installations
Disabling SSL - tarball installations
Enabling HTTPS
Using Kerberos authentication with OpsCenter
Configuring events and alerts
Enabling email alerts
Enabling alerts posted to a URL
Event action types
Configuring an alert for KMIP errors
Configuring data collection and expiration
Estimating the amount of metrics data generated
Controlling data collection
Storing collection data on a different cluster
Configuring automatic updates of OpsCenter definition files
Automatic failover overview
Enabling automatic failover
Configuration files
OpsCenter configuration properties
Cluster configuration properties
address.yaml
Customize scripts for starting and stopping DataStax Enterprise and Cassandra
Example scenarios
Configuring for multiple regions
Configuring for very large clusters
Using OpsCenter
OpsCenter Workspace Overview
Using OpsCenter authentication
Managing clusters
Creating a cluster
Adding an existing cluster
Retrying a failed install
Modifying OpsCenter cluster connections
Node monitoring and administration
Ring View
List View
Node management operations
Cluster administration
Generating a PDF report
Collecting and downloading diagnostic data
Configuring a cluster
Adding a node to a cluster
Removing a cluster
Rebalancing a cluster
Restarting a cluster
Changing the display name of a cluster
Performance metrics
Viewing performance metrics
Cluster performance metrics
Pending task metrics
Column family performance metrics
Search performance metrics
Operating system performance metrics
Alert metrics
OpsCenter Metrics Tooltips Reference
DSE Management Services
Backup Service
Repair Service
Capacity Service
Best Practice Service
Data modeling
Keyspaces
Browsing data
Troubleshooting
High CPU usage by opscenterd
Troubleshooting SSL validation for self-signed certificates
Zero nodes detected in cluster
Internet Explorer web browser not supported
The SSTables in this snapshot '<tag>' are not compatible
OpsCenter data growing too large
Cannot create a keyspace
Error
exceptions.ImportError:libssl.so.0.9.8
Python used to run OpsCenter not built with SSL
DataStax agent port setting conflict
Limiting the metrics collected by OpsCenter
Java not installed or JAVA_HOME environment variable not set
Insufficient user resource limits errors
Installing EPEL on CentOS 5.x or RHEL 5.x
Problems with provisioning
General troubleshooting steps
Invalid repository credentials
Timed out waiting for Cassandra to start
The following packages are already installed
Removing all Cassandra or DSE files after failed provisioning
Agents cannot connect to opscenterd
OpsCenter cannot create a local cluster using a public IP address
Problems running
sstableloader
Timeout connecting to Cassandra 2.0 clusters
Sophos Web Protection breaks browser access to OpsCenter on Windows
Error getting version update information
OpsCenter API reference
Release Notes
OpsCenter 5.1.4 Release Notes
OpsCenter 5.1.3 Release Notes
OpsCenter 5.1.2 Release Notes
OpsCenter 5.1.1 Release Notes
OpsCenter 5.1.0 Release Notes
Feedback
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Configuration
Configuration
Configuring role-based security
OpsCenter allows enabling user authentication, adding users, and defining custom roles.
Configuring SSL
OpsCenter uses Secure Socket Layer (SSL) to encrypt the communication protocol and authenticate traffic between DataStax agents and the main OpsCenter daemon. SSL is disabled by default. Enabling SSL is recommended.
Enabling HTTPS
Enable Hypertext Transfer Protocol Secure (HTTPS) support in OpsCenter and specify SSL information for better security.
Using Kerberos authentication with OpsCenter
If a cluster uses Kerberos authentication, you need to create and configure the OpsCenter principles before adding the cluster to OpsCenter.
Configuring events and alerts
The OpsCenter Event Log page in the Activities section displays a continuously updated list of events and alerts.
Configuring data collection and expiration
OpsCenter collects system and column family metrics data for each node in a cluster.
Configuring automatic updates of OpsCenter definition files
OpsCenter uses definition files to enable support for different versions of DataStax Enterprise, DataStax Community, and Cassandra without the need to upgrade the currently installed version of OpsCenter itself.
Automatic failover overview
Automatic failover from the primary DataStax OpsCenter instance to the backup OpsCenter instance provides high availability without any manual intervention or downtime.
Configuration files
Configure capabilities by manually modifying the opscenterd.conf, cluster_name.conf, and address.yaml configuration files.
Customize scripts for starting and stopping DataStax Enterprise and Cassandra
OpsCenter allows starting and stopping the DataStax Enterprise/Cassandra process on each node in a visual manner. Customize the startup or shutdown of a node using the provided example scripts.
Example scenarios
Example scenarios of OpsCenter deployments include configuring for multiple regions, IP forwarding, or very large clusters.
Configuration
Configuring role-based security
Configuring SSL
Enabling HTTPS
Using Kerberos authentication with OpsCenter
Configuring events and alerts
Configuring data collection and expiration
Configuring automatic updates of OpsCenter definition files
Automatic failover overview
Configuration files
Customize scripts for starting and stopping DataStax Enterprise and Cassandra
Example scenarios