Provisioning F.A.Q

1. Seeing error below:

   [root@a6s14 contrail-ansible-deployer]# ansible-playbook -i inventory/ -e orchestrator=vcenter  playbooks/install_contrail.yml
   ...
   ...
   ERROR! Unable to retrieve file contents
   Could not find or access '/root/contrail-kolla-ansible/ansible/kolla-host.yml'
   [root@a6s14 contrail-ansible-deployer]# 
   

   Resolution: Please run the command below first before running the install_contrail play

   ansible-playbook -i inventory/ playbooks/configure_instances.yml
   

2. Seeing error below:

   TASK [memcached : Copying over config.json files for services] *******************************************************************************************************************************
   task path: /root/contrail-kolla-ansible/ansible/roles/memcached/tasks/config.yml:10
   failed: [192.168.122.84] (item=memcached) => {
       "changed": false,
       "item": "memcached",
       "msg": "AnsibleUndefinedVariable: {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] if orchestration_engine == 'ANSIBLE' else '0.0.0.0' }}: 'dict object' has no attribute 'ipv4'"
   }
   

   Resolution: Check if you have specified the right values for "network_interface" under "kolla_globals" section in your instances.yaml file. This interface must have an IP address.

3. How to specify host specific parameters (for example, the interface names are different for the different servers in the cluster)?

   Resolution: Check the example here.

4. Containers are not accessible (pulled) from private registry given as "CONTAINER_REGISTRY".

   Resolution: Check that "REGISTRY_PRIVATE_INSECURE" is set to True. Example here: Sample instances.yaml

5. vrouter module is not getting installed on the computes. Seeing the vrouter container in error state and docker logs show the below error:

       [srvr5] ~ # docker logs vrouter_vrouter-kernel-init_1
       /bin/cp: cannot create regular file '/host/bin/vif': No such file or directory
       INFO: Load kernel module for kver=3.10.0
       INFO: Modprobing vrouter /opt/contrail/vrouter-kernel-modules/3.10.0-693.21.1.el7.x86_64/vrouter.ko
                     total        used        free      shared  buff/cache   available
       Mem:            62G        999M         55G        9.1M        5.9G         60G
       Swap:            0B          0B          0B
                     total        used        free      shared  buff/cache   available
       Mem:            62G        741M         61G        9.1M        923M         61G
       Swap:            0B          0B          0B
       insmod: ERROR: could not insert module /opt/contrail/vrouter-kernel-modules/3.10.0-693.21.1.el7.x86_64/vrouter.ko: Unknown symbol in module
       ERROR: Failed to insert vrouter kernel module
   

   Resolution: The vrouter module is now dependent on the host kernel being 3.10.0-693.21.1.el7.x86_64. Install this kernel version on the target nodes before running provision:

       yum -y install kernel-3.10.0-693.21.1.el7.x86_64                                                                                                                                                    
       yum update
       reboot