Overview
Key Concepts
General
- Index
- Favorites
- User Getting Started
- General
- User Key Concepts
- Search
- User Testing and Debugging
- User Interface
Account
- Index
- Add a Group to an Organization
- Add a New Azure Cloud
- Add a New Cloud
- Add a User To a Group
- Add a User
- Add a User to a Team
- Azure Setup
- Azure
- Catalogs
- Clouds
- Cost Management
- Create a Team in an Organization
- Delete a Platform
- Deploy an Organization
- Deployment Approval Process
- Enable Access to an Assembly for a User on a Team
- Environment Profiles
- How Cost Tracking and Reporting Works
- Import and Export Catalog
- Account
- Manage OneOps User Accounts
- Notifications
- OneOps Policy Management
- Organization Summary
- Provide Only Necessary Privileges to Accounts
- Reports Summary
- Restrict Access with Teams
- Secrets Proxy
- Security Groups
- Shutdown a Cloud
- View a Reports Summary
- View, Add, or Edit Environment Profiles
- View an Organization Summary
- View Assembly and Organization Consumption with Reports
Design
- Index
- Add a Platform to a Design
- Add a Variable
- Add ELK Stack to an Application
- Add or Delete a Security Group to Open or Close an Additional Port
- Add a Team to an Assembly
- Apache HTTP Server Component
- Apache HTTP Server Pack
- Apache Tomcat Pack
- Artifact Component
- Attachments
- Variables Override Prevention
- Certificate Component
- Chocolatey Package Component
- Components
- Compute Component
- Create Assemblies to Design Applications
- Create Environment Dependency with Environment Profiles
- Daemon Component
- Design Best Practices
- Download Component
- Edit a Platform
- Enable https for a Service (LB Certs)
- File Component
- Filebeat Component
- Firewall Component
- Fully Qualified Domain Name FQDN
- Hostname Component
- Design
- Java Component
- Job Component
- Keystore Component
- Load Balancer Component
- Library Component
- Load/Extract
- Logstash Component
- Manage Assemblies
- DotNet Framework Component
- Microsoft IIS Pack
- IIS Website Component
- Microsoft SQL Server Pack
- Naming Conventions
- NuGet Package Component
- Objectstore Component
- Operating System Component
- Packs
- Platform Links
- Platforms
- Ports by Platform
- Propagation
- Security Group Component
- Secrets Client Component
- Sensuclient Component
- Set Up Multiple Ports/Protocols in Load Balancer
- Share Component
- SSH Keys Component
- Storage Component
- Telegraf Component
- Upgrade an Application Version in an Environment
- User Component
- Variables
- View Design Releases
- Volume Component
- Watching an Assembly
- Website Component
Transition
- Index
- Add CNAME in Azure DNS
- Add CNAME
- Add or Edit Primary and Secondary Clouds
- Add or Reduce Capacity
- Availability Modes
- Configure ECV Check URL on OneOps
- Create an Environment
- Delete an Environment
- Deploy Application after Design Changes
- Deploy an Application for the First Time
- Deploy Application With Database
- Deploy an Environment
- Deploy Multiple Clouds in Parallel
- Deploy and Provision an Application and Environment for the First Time
- Edit an Environment
- Email Notification Relay
- Environment Releases
- Environment
- Transition
- Remove an Unused Cloud from an Environment
- Rollback Code
- Set Variable Cloud Scaling Percentage
- Transition Best Practices
- Transition
- View Deployment Status
Operation
- Index
- Assess the Health of Applications, Platforms and Clouds
- Auto Repair
- Auto Replace
- Auto Scale
- Computes in Operation
- Control Environment
- Enable Platform to Auto Replace Unhealthy Components
- Ensure that Alerts for Production Environment are Sent to NOC
- Find a Platform VIP Name
- Grep or Search Text in Files on Computes
- Operation
- Navigation to Monitors
- Monitors
- Operations
- Operations Summary
- Set Up a Custom Action
- Take a Node out of Traffic (ECV Disable)
- Update or Upgrade New OneOps Code
Take a Node out of Traffice (ECV Disable)
In general, the LB (load balancer) determines the health of an individual instance (back-end server) by monitoring a health URL that is configured for the app. If the health URL is an http monitor and it returns an HTTP 200 OK response, then the LB considers the instance to be healthy and traffic gets routed to the instance. Otherwise, no traffic goes to this instance. The standard ECV check in Tomcat is “/” which needs to be changed as prescribed in Configure ECV Check URL on OneOpsa. (See the diagram below.)
Solution
Details
- Add the On-Demand attachment ecv-enable to Tomcat or the artifact.
- The on-demand file type is any custom file action that is available as an action on the corresponding operations page of the instance.
- When you add an attachment, select On Demand for Run on Event.
- Copy the contents on the Execute Command section as appropriate.
- Similarly add the corresponding On-Demand attachment, ecvDisable.
- If it is necessary to disable the ECV, select Tomcat from Operations and select disableECV.
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To enable ECV and traffic, enable Tomcat.
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To remotely debug, there is a debug action in Operations by default. To start the Tomcat in debug mode, select debug.
- The default jpda port is 8000. To open the ports, refer to Add or Delete a Security Group to Open or Close an Additional Port.
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If you are using eclipse, conf. looks like this:
