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  7. Connection from a VM to the Internet does not work

Connection from a VM to the Internet does not work

Connection from a VM to the Internet does not workΒΆ

This section describes how to troubleshoot connectivity failures from a VM to the Internet.

  • Verify the OpenContrail schema flapping
  • Verify the OpenStack security groups
  • Verify the IP address and default gateway on a VM
  • Verify the IP and DNS traffic
  • Verify the vhost0 interface on a compute node
  • Verify the floating IP
  • Verify SNAT and other services instances
updated: 2025-01-10 08:56
Connectivity-related OpenContrail issues

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Verify the OpenContrail schema flapping

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  • Back up and restore
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  • Upgrade and update an MCP cluster
  • Cloud verification
  • Troubleshooting
    • Generate a sosreport
    • Troubleshoot DriveTrain
    • Troubleshoot an MCP OpenStack environment
    • Troubleshoot OpenContrail
      • Troubleshoot the OpenStack-specific issues
        • Troubleshoot Cassandra for OpenContrail 4.x
        • Troubleshoot Cassandra for OpenContrail 3.2
        • TCP checksum errors on compute nodes
        • Troubleshoot HAProxy and LBaaS configuration
        • Neutron network ports for LBaaS are not deleted through Heat
        • Troubleshoot a VM network outage
        • Connectivity-related OpenContrail issues
        • VM does not have link-local (169.254.x.x) address upon boot
        • Troubleshoot SNAT and LBaaS namespaces
        • Slow response time from JMX Exporter
        • FIP is not associated to an LB port through Terraform
      • Troubleshoot OpenContrail 3.2

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