Creating a virtual server (CentOS and DHCP retrieval)

This section explains how to retrieve a port (private IP address) using DHCP and create a virtual server (CentOS).

Refer to "Creating a virtual server (CentOS and port specification)" for details on specifying a port (private IP address).

1. Set the environment variables below as follows:

   $ VM_NAME=<virtualServerName> (any)

   $ FLAVER_ID=<specOfVirtualServer> (listed flavor ID)

   $ VOL_SIZE=30

   $ DEVICE_NAME=<blockStoragePath> (specify using "/dev/vda" format)

   $ SOURCE=<blockStorageType>

   $ IMAGE_REF_ID=839c1db6-738c-4e2b-9a1d-c14977564203<imgIdOfCentos>

   $ DESTINATION=<connectionDestinationVol> (specify volume)

   $ ISDELETE=<volDeletion> (specify 1 to delete volumes created during creation of the virtual server, or 0 otherwise) 

   $ KEYNAME=<keyPairName>

   $ INSTANCE_MAX=<maxNumOfServers>

   $ INSTANCE_MIN=<minNumOfServers>

   $ NETWORK_ID=<networkIdThatYouWantToConnectTo>

   $ SG_NAME=<secGroupNameToBeSpecified>

2. Execute the following API:

   $ curl -Ss $COMPUTE/v2/$PROJECT_ID/servers -X POST \
   -H "X-Auth-Token: $OS_AUTH_TOKEN" -H "Content-Type: application/json" \
   -d '{"server": {"name": "'$VM_NAME'", "availability_zone": "'$AZ'",
    "imageRef": "", "flavorRef": "'$FLAVOR_ID'", "block_device_mapping_v2":
    [ {"boot_index": "0", "uuid":"'$IMAGE_REF_ID'",
    "volume_size": "'$VOL_SIZE'", "device_name": "'$DEVICE_NAME'",
    "source_type": "'$SOURCE'", "destination_type": "'$DESTINATION'",
    "delete_on_termination": '$ISDELETE'} ] , "key_name": "'$KEYNAME'",
    "max_count": '$INSTANCE_MAX', "min_count": '$INSTANCE_MIN',
    "networks": [{"uuid": "'$NETWORK_ID'"}],
    "security_groups": [{"name": "'$SG_NAME'"}] }}' | jq .

   The following response is output:

   {
     "server": {
       "security_groups": [
         {
           "name": "<specifiedSecGroupName>"
         }
       ],
       "OS-DCF:diskConfig": "MANUAL",
       "id": "<newVirtualServerId>",
       "links": [
         {
           "href": "http://10.3.0.201/v2/<projId>/servers/<newVirtualServerId>",
           "rel": "self"
         },
         {
           "href": "http://10.3.0.201/<projId>/servers/<newVirtualServerId>",
           "rel": "bookmark"
         }
       ]
     }
   }

3. Execute the following API to check the virtual server that you created:

   $ curl -Ss $COMPUTE/v2/$PROJECT_ID/servers/detail -X GET \
   -H "X-Auth-Token: $OS_AUTH_TOKEN" | \
   jq '.servers[] | {status: .status, network_name: .addresses |
    keys, key_name: .key_name, flavor_id: .flavor |
    .id, vm_id: .id, security_group: .security_groups[] |
    .name, name: .name, }'

   If a list including the virtual server name that you specified is output, as follows, that means the virtual server was created successfully.

   ...
   
   {
     "status": "<statusOfVirtualServer>",
     "network_name": [
       "<connectedNetworkName>"
     ],
     "key_name": "<keyPairName>",
     "flavor_id": "<flavorId>",
     "vm_id": "<virtualServerId>",
     "security_group": "<specifiedSecGroupName>",
     "name": "<virtualServerName>"
   }
   
   ...