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Health monitoring and alerting for xen app, xendesktop and netscaler
- 1. SUM 307 - Health Monitoring and alerting for XenApp, XenDesktop and Netscaler Download this slide http://ouo.io/f5RyS
- 2. โข Health Monitoring and Recovery Policies in XenApp 6 โข Key monitoring commands and techniques with XenApp โข XenDesktop 5.x Monitoring and Alerting Policies โข XenDesktop Monitoring Tools โข XenDesktop Miscellaneous โข Health Checking of Citrix Services using CAG-EE โข Alerting and Logging using CAG-EE Agenda
- 3. โข Verifies specified XenApp services โข Take an action when the verification fails โข Implemented as one or more XenApp policies โข Must be applied to a worker group or organizational unit. โข Numerous tests available . XA Health monitoring and Recovery Policies XML Service TestIMA Service TestPrint Spooler TestLogon Monitor TestICA Listener TestCheck DNS TestLHC Test
- 4. Typical Problems to Be Addressed โข Enumeration of published applications โข XML Service hangs โข IMA Service hangs โข XML Ticket requests fail โข Terminal Service hangs โข Printing issues
- 5. Additional key tests โฆ.
- 6. Logon Control under XenApp 6 / XenApp 6.5 New options in Citrix AppCenter (XA 6.5)
- 7. XenApp 6.5 โ Logon Control Recovery Action
- 8. XenApp 6.5 โ Logon Control Recovery Action
- 9. โข Convenient to use โข Native on W2K8 R2 โข Setup permissions โข Add the required module โข Leverage .Net objects Monitoring through Powershell 2.0
- 11. โข Manage XenApp servers โข Assign published applications and Citrix policies to worker groups โข Farm Servers โข Domain OUs โข Shared Settings โข Load Balancing and failover XenApp 6 Worker Groups Worker Group 1 Worker Group 2Worker Group 3
- 12. XML service IMA service LHC Userโs login Credential (in http/https form) Userโs login Credential (in http form) XA XA XA XA XA XA Web Interface Miami Domain Controller Data Collector XA London Local Security Authority Service (Lsass.exe) Sydney US-UK Zone AU Zone Userโs SIDs Data Collector US users Userโs login Credential (in http/https form) XYZ Corp
- 13. XML service IMA service Local Security Authority Service (Lsass.exe) LHC XA XA XA XA XA XA Web Interface Miami Domain Controller Userโs SIDs Worker Group Preference Policy Worker Group Preference Policy Data Collector Sydney US-UK Zone AU Zone XA Data Collector US users London XYZ Corp
- 14. XML serviceXA CPS XA CPS XA CPS IMA service Web Interface WGPF: 1. Miami 2. London 3. Sydney Domain Controller Data Collector Worker Group Preference Policy Miami Sydney US-UK Zone AU Zone IMA service Worker Group Preference Policy Citrix Services Manager Domain Controller Address of least busy XA in Miami WG Data Collector XYZ Corp US users London
- 15. โข LBDiag utility โข Useful for diagnosing load balancing issue in XenApp 6. โข It simulates the load balancing process for a user launching a specific application โข Calculates load balancing policies, worker groups, server and application load evaluators and checks on application installation How to monitor load balancing policies
- 16. Citrix Confidential - Do Not Distribute LBDiag utility Userโs AD group membership Userโs worker group preference list List of server loads, application and server status for each worker group
- 17. โข CDF trace โข CDF trace on a zone data collector while users are connecting to the farm โข Use CDFControl โข IMA_Subsystems_LMS and IMA_Subsystems_ImaWorkerGroup Troubleshooting worker group load balancing issue
- 19. โข Citrix Medevac 2.5 โข Troubleshooting Utility developed by the Citrix Escalation Team โข XML, Terminal Services, IMA and RPC related issues โข Standalone Utility โข Run it from any machine on the network XML Broker Health Monitoring and Alerting
- 20. โข XML Service health โ verifies XML response โข Verify Data Collector health โ IMA Service โข Least Loaded Server health โ TS and RPC โข Standalone EXE that runs on the server and can be used on remote servers as well XML Broker Health Monitoring and alerting
- 21. Using Medevac: XML Broker and XA server monitoring
- 22. Using Medevac: Case Study The Problem โฆ Some things we know โฆ โข Environment: W2K8 R2, XA6 Enterprise Edition, Windows 7 clients, Online Plugin v 12.1 โข Some users affected โข Nothing has changed in the environment โข Web interface 5.4 correctly enumerates resources A user attempts to launch a published application and receives an error - "Server unavailable" or โApplication launch request failureโ
- 23. The Least Loaded Server wsxica.dll XML IMA Service CCTicket.dll credentialsticket credentialsticket credentialsticket CCTicket.dll Web Interface Web Server XML Ticket Request XML Broker End User Client Connection / Logon To The Citrix Serverโs Published Application Trmsrv / Remote Desktop Services
- 24. Using Medevac: Case Study โข MedEvac identified the โLeast Loaded Serverโ โข So how do we verify the IMA service is functioning properly on the โLeast Loaded Server?โ โข By running the LLS test and specifying the Least Loaded Server in MedEvac, we are making the LLS use itโs IMA service to communicate to the Zone Data Collector to return itself as the Least Loaded Serverโฆ โข If this test returns success, we know that the IMA service on the Least Loaded Server is working properlyโฆ
- 25. Using Medevac: The results LLS Test against the Least Loaded Server (IMA TEST)
- 26. Using Medevac: Case Study RESOLUTION: โข Using PSKill from the Microsoft sysinternals suite, we manually forced termination the IMA service โข Recreated the local host cache โข Restarted IMA - started successfully โข Users able to launch their published resources as normal
- 28. Additional Key Monitoring Components/Products
- 29. XenDesktop 5.x Monitoring & Alerting Policies
- 30. โข First Introduced in XenDesktop 5 โข Driven by the FullArmor policy engine โข Configured through Desktop Studio or Active Directory โข Alerts displayed in Desktop Studio and Desktop Director XenDesktop Monitoring & Alerting Policies Tip: To manage policies through AD - install CitrixGroupPolicymanagement_x86/x64.msi on a Domain controller
- 31. โข What can an administrator monitor once these policies are enabled and filtered accordingly? 1. CPU Usage on Virtual Desktops 2. Network latency on ICA connections 3. Pm managed profile load time โข All of the above affect the user experience which is a key consideration when adopting VDIโฆ XenDesktop 5.x Monitoring & Alerting Policies
- 32. โข Desktop Studio or Active Directory? โข The choice is yoursโฆ โข My Choice? โขActive Directory โข Why? โขHA VDA โขVDI-in-a-Box โขGPMC Results wizard Configuring Monitoring & Alerting Policies
- 33. โข Machine PolicyVirtual Desktop Agent Settings โข Two configurable values: โขMonitoring period โขThreshold โข Default Values: โขMonitoring period: 60 Sec โขThreshold: 95% HDX Policy - CPU Usage Monitoring
- 34. โข User PolicyVirtual Desktop Agent Settings โข Two configurable values: โขMonitoring period โขThreshold โข Default Values: โขMonitoring period: 30 Sec โขThreshold: 200ms HDX Policy - ICA Latency Monitoring
- 35. โข User PolicyVirtual Desktop Agent Settings โข Single configurable value โข Threshold โข Default Value: โขThreshold: 60 seconds HDX Policy - Profile Load Time Monitoring Note: Profile management must be installed on VMs for this policy to trigger alerts..
- 36. โข Q. How do Desktop Studio & Desktop Director know when an alert should be triggered? โข A. Both DS and DD use WinRM to retrieve policy values and system counter information which is exposed through the WMI infrastructure How does it all work?
- 37. 1. WMI exposes data using various WMI providers 2. WinRM retrieves the exposed data (HDX data, systems counters, Policies...) 3. Desktop Director, Desktop Studio & HDX Monitor request this data from WinRM Under the Hood - Component Interaction
- 38. โข Citrix HDX WMI provider is the frontend to the Windows WMI infrastructure on the VDA โข Citrix.HDX.WMI.Provider.dll (%ProgramFiles %CitrixICAService) Citrix HDX WMI Provider โข Retrieves HDX data from the Registry & Shared memory on VM โข New updated version installed with VDA 5.5 to support HDX Monitor v2
- 39. Laying the foundations - System Counters
- 41. โข Key tools which can be used to actively monitor a XenDesktop 5 Site 1. Desktop Studio 2. Desktop Director 3. HDX Monitor 4. XDPing 5. Xnapshot (XMLMon) 6. PowerShell 7. Honourable Mentions... Key XenDesktop Monitoring Tools
- 42. โข Dashboard provides admins with overview of site resources Desktop Studio
- 43. โข Provides a high level view of all machines in a Site โข Categorized โข All โข Unregistered โข High CPU* โข High Latency* โข High Profile Load Time* โข Last Connection Failed โข Pending Update Desktop Studio Dashboard - Machines pane
- 44. โข Provides machine state information for each desktop group in the site โข Realtime graph shows % of machines in use for each Desktop Group at specific times Desktop Studio Dashboard - Usage pane
- 45. โข Displays health status icons for all hosts and controllers in the Site Desktop Studio Dashboard โ Infrastructure pane
- 46. โข Used to monitor all resources in a site and manage VMโs โข Alerts appear as dynamic links which can be followed for further investigation โข Shadow functionality built-in Desktop Director
- 47. โข New Features โขEnhanced HDX Monitoring pane โขFlexible UI includes collapsible panes โขReporting feature โขImproved support for multiple XenDesktop sites Desktop Director v2.0
- 49. โข Used to validate/monitor the operation of the HDX stack on VM โข Supports updated WMI provider installed with VDA 5.5 โข NEW Remote access capabilities HDX Monitor v2.0
- 50. โข Traditionally used for troubleshooting common configuration issues on both the DDC and VDA but can also be used to monitor the state of key services and WCF endpoints โข http://support.citrix.com/article/CTX123278 XDPing
- 51. โข Profiling tool which can take a complete picture of all controllers in a farm/site โข BIOS information, Registry information, Device Drivers, Windows Services, Installed Hotfixes, Citrix Binaries, and Citrix XenDesktop Farm information โข Includes compare functionality & XMLMon utility for monitoring the XML broker โข http://support.citrix.com/article/CTX126699 Citrix Xnapshot Xnapshotshot
- 52. โข PowerShell tab allows admins to each script which is run while performing admin defined actions โข Built-in automation through Launch PowerShell Tab PowerShell (PoSH)
- 53. โข Add-Pssnapin Citrix.* โข Adds all XenDesktop Snapinโs (cmdlets) โข Required when launching PowerShell manually through Windows โข Not required when launching Posh through Desktop Studio โข Get-Command -Module Citrix.* โข Returns full list of available XenDesktop cmdlets โข XenDesktop 5 SDK Cmdlet Help โขhttp://support.citrix.com/article/CTX127254 Useful Commands
- 54. Get cmdlet examples XenDesktop 5 SDK Cmdlet Help http://support.citrix.com/article/CTX127254
- 55. โข Get-BrokerSession โข Retrieves sessions based on specified criteria โข Without parameters - all sessions enumerated โข Usage example: Get-BrokerSession -UserName %Domain%%account% -SessionState connected Get-BrokerSession
- 56. โข Get-BrokerDesktopUsage โข Returns Information recorded (hourly) by Broker about number of desktops in use for each desktop group โข Without parameters, the first 250 records are returned โข Information deleted after 7 days Get-BrokerDesktopUsage
- 57. โข Get-BrokerHypervisorAlert โข Gets alerts reported by the hypervisor(s) that the controller is monitoring โข Without Parameters - All alerts are returned โข Usage examples: Get-BrokerHypervisorAlert -HostingServerName TestHyp* -Severity Red Get-BrokerHypervisorAlert -MaxRecordCount %Value% (250 by default) โข Supported Metrics โข VMware ESX (CPU, Memory, Network, Disk) โข Citrix XenServer (CPU, Network (Bandwidth)) โข Microsoft Hyper-V (None) Get-BrokerHypervisorAlert
- 58. โข Perfmon & EdgeSight โข The Controller and VDA both install system counters which can be used to collect real-time and historical dataโฆ Honourable Mentions
- 59. Miscellaneous
- 60. โข If using XenServer as your host you take advantage of the built-in alerting mechanism โข Note: SNMP daemon can also be configured to interact with 3rd party monitoring software XenServer - Configuring email alerts
- 61. โข XenServer uses SSMTP to deliver emails โข Edit /etc/mail-alarm.conf โข Configure Options โข Use STMP relay server for testing โข smtp.gmail.com:587 โข Test (XenServer Console) โข ssmtp [email protected] โข CTRL+D XenServer - Configuring email alerts
- 62. โข Once alerting is enabled and configured correctly on the XenServer host, automatic alerts will be sent to the specified email address once the threshold levels are exceededโฆ Automatic Alerts
- 63. Success Accelerator for XenDesktop โข Guided Design. Follow a comprehensive checklist of questions and options โข Peer Benchmarks. Compare your design against thousands of others โข Best Practices. Use Citrix best practices to make informed decisions โข Step-by-Step Installation. Get custom- generated installation instructions & resources Free, customized, step-by-step implementation guidance online citrix.com/successaccelerator See a demo, create your project Station 46 in the Citrix Solutions & Services Showcase
- 64. โข If you want to talk further about XenDesktop, VDI-in-a-Box, Profile management or App virtualization then you will find me at the XD booth at the following days & times: Ask The Expert Booths
- 65. Health checking of Citrix and 3rd party services using NetScaler or Access Gateway Enterprise Edition
- 66. โI already have a monitoring and alerting system, so why do I need this?โ Why Monitor & Alert Component Services App Servers NetScaler AGEE Monitoring Alerting
- 67. โข AGEE NetScaler have the same health checking abilities โข Allows appliance determine if a โserviceโ is up or down โข "Service" = XD DDC, XenApp WI, STA, XML Service โข Configurable health probe frequency, default 5 seconds โข Intelligent application logic โ not just TCP port โข Intelligent health probe logic Health checking of Citrix Services
- 68. โข On AGEE - under VServers and Services โข On NetScaler โ under Load Balancing Creating a Service
- 69. โข Here is the create service window โ supply the server IP address and the port that WI is listening on โข HTTP Monitor is chosenโฆ for now. โข Service name is arbitrary Creating a Service
- 70. Health checking of Citrix Services XenApp Farm XML Broker STA Web Interface NetScaler AGEE โข No production traffic needed for health check โข Appliance uses MIPSNIP as source IP for communication โข Firewall must allow traffic from MIPSNIP
- 71. โข In the Config Utility โ we can see the health of all services. โข Double clicking the service and selecting the monitor shows specific information, and a reason if the monitor is down. Health checking of Citrix Services
- 72. โข Citrix Infrastructure specific monitors Citrix Confidential - Do Not Distribute Health checking of Citrix Services
- 73. โข New Intelligent Customisable Monitoringโฆ 1. SNMP Alert Retries 2. Success Retries 3. Failure retries โข Default values of above set to replicate old behaviour, and need to be changed to get the benefit Health checking of Citrix Services
- 74. Transition Service to DOWN for Failed Probes add monitor FAIL2 HTTP โfailureRetries 3 โretries 5 1 S Probes Status 2 F 3 F 4 S 5 F 6 S Service transitions to DOWN 7 S 8 S Sliding retries window as probes continue
- 75. โข Monitoring Web Interface, note the WI site path โข New in 9.3! Adds Auth/nocookies.aspx to the Site Path URL โข This tests that the WI is running along with .Net Health checking of Citrix Services
- 76. โข Extended WI Monitor (New in 9.3) โข It establishes a dummy WI session and validates the logon. Health checking of Citrix Services
- 77. โข Custom monitor for the XenApp XML service. โข Verifies the published application name which we get from the XML service. Health checking of Citrix Services
- 78. โข Xen Desktop Delivery Controller โข Option to use credentials (new in 9.3) Health checking of Citrix Services
- 79. โข There may be other components in your DMZ, or part of your infrastructure that relate to your Citrix NetScaler / AGEE appliance. Health checking of 3rd party Services XenApp Farm FTP SMTP LDAP
- 80. โข We can use the same intelligent monitoring to check and alert on these components: โข Examples are FTP, HTTP, SMTP, DNS, SIP, SMTP, LDAP, POP3, RTSP โข New in 9.3 โ MySQL, RDP, MS-SQL Health checking of 3rd party Services
- 81. All of these health checks are specific & indepth e.g. 1.FTP health check can log onto an FTP server, and check for the existence of a file 2.LDAP monitor can verify that a bind username and password are correct 3.SMTP monitor sends the EHLO command and checks for the 250 response 4.HTTP can send a request, and look for a string in the response body Health checking of 3rd party Services
- 82. Alerting & logging using NetScaler or Access Gateway Enterprise Edition
- 83. โข If you donโt have your own alerting infrastructure to plug the appliance into, you can download Citrix Command Center โข Designed for NetScaler, AGEE, Branch Repeater โข Configurable alerting (e-mail etc) when services go down Health checking of Citrix Services
- 84. โข How do I know if a service is down? โข SNMP Trap gets sent โข Command Center can send an e-mail alert. Health checking of Citrix Services
- 85. โข How do I know if a service went down? Health checking of Citrix Services
- 86. โข If you want to talk further about NetScaler or Access Gateway Enterprise edition, then you will find me at the Ask the Expert booth at the following days & times: Ask The Expert Booths
- 87. Before you leaveโฆ โข Tools as a Service (TaaS) - Ask one of our experts for a demo Location: TaaS Booth, Solutions Expo Hall and Citrix Education Learning Lounge, CCIB, Level 0, Doors 01 โข Session surveys are available online at www.citrixsummit.com starting Thursday, 27 October โข Provide your feedback and pick up a complimentary gift at the registration desk โข Download presentations starting Monday, 7 November, from your My Organiser tool located in your My Account