func (c *GenericClient) getNovaNetworkFloatingIPs(d *Driver) ([]FloatingIP, error) {
pager := compute_ips.List(c.Compute)
ips := []FloatingIP{}
err := pager.EachPage(func(page pagination.Page) (continue_paging bool, err error) {
continue_paging, err = true, nil
ipListing, err := compute_ips.ExtractFloatingIPs(page)
for _, ip := range ipListing {
if ip.InstanceID == "" && ip.Pool == d.FloatingIPPool {
ips = append(ips, FloatingIP{
Id: ip.ID,
Ip: ip.IP,
Pool: ip.Pool,
})
}
}
return
})
return ips, err
}
func main() {
// step-1
var authUsername string = "your_auth_username"
var authPassword string = "your_auth_password"
var authUrl string = "http://controller:5000"
var projectName string = "your_project_id"
var regionName string = "your_region_name"
authOpts := gophercloud.AuthOptions{
IdentityEndpoint: authUrl,
Username: authUsername,
Password: authPassword,
TenantID: projectName,
}
provider, _ := openstack.AuthenticatedClient(authOpts)
client, _ := openstack.NewComputeV2(provider, gophercloud.EndpointOpts{
Region: regionName,
})
// step-2
pager := images.ListDetail(client, images.ListOpts{})
page, _ := pager.AllPages()
imageList, _ := images.ExtractImages(page)
fmt.Println(imageList)
// step-3
pager = flavors.ListDetail(client, flavors.ListOpts{})
page, _ = pager.AllPages()
flavorList, _ := flavors.ExtractFlavors(page)
fmt.Println(flavorList)
// step-4
imageID := "74e6d1ec-9a08-444c-8518-4f232446386d"
image, _ := images.Get(client, imageID).Extract()
fmt.Println(image)
// step-5
flavorID := "1"
flavor, _ := flavors.Get(client, flavorID).Extract()
fmt.Println(flavor)
// step-6
instanceName := "testing"
testingInstance, _ := servers.Create(client, servers.CreateOpts{
Name: instanceName,
ImageRef: imageID,
FlavorRef: flavorID,
}).Extract()
fmt.Println(testingInstance)
// step-7
pager = servers.List(client, servers.ListOpts{})
page, _ = pager.AllPages()
serverList, _ := servers.ExtractServers(page)
fmt.Println(serverList)
// step-8
servers.Delete(client, testingInstance.ID)
// step-9
fmt.Println("Checking for existing SSH key pair...")
keyPairName := "demokey"
pubKeyFile := "~/.ssh/id_rsa.pub"
keyPairExists := false
pager = keypairs.List(client)
page, _ = pager.AllPages()
keypairList, _ := keypairs.ExtractKeyPairs(page)
for _, k := range keypairList {
if k.Name == keyPairName {
keyPairExists = true
break
}
}
if keyPairExists {
fmt.Println("Keypair " + keyPairName + " already exists. Skipping import.")
} else {
fmt.Println("adding keypair...")
bs, _ := ioutil.ReadFile(pubKeyFile)
keypairs.Create(client, keypairs.CreateOpts{
Name: keyPairName,
PublicKey: string(bs),
}).Extract()
}
pager = keypairs.List(client)
page, _ = pager.AllPages()
keypairList, _ = keypairs.ExtractKeyPairs(page)
fmt.Println(keypairList)
// step-10
fmt.Println("Checking for existing security group...")
var allInOneSecurityGroup secgroups.SecurityGroup
securityGroupName := "all-in-one"
securityGroupExists := false
pager = secgroups.List(client)
page, _ = pager.AllPages()
secgroupList, _ := secgroups.ExtractSecurityGroups(page)
for _, secGroup := range secgroupList {
if secGroup.Name == securityGroupName {
allInOneSecurityGroup = secGroup
securityGroupExists = true
break
}
}
if securityGroupExists {
fmt.Println("Security Group " + allInOneSecurityGroup.Name + " already exists. Skipping creation.")
} else {
allInOneSecurityGroup, _ := secgroups.Create(client, secgroups.CreateOpts{
Name: securityGroupName,
Description: "network access for all-in-one application.",
}).Extract()
secgroups.CreateRule(client, secgroups.CreateRuleOpts{
ParentGroupID: allInOneSecurityGroup.ID,
FromPort: 80,
ToPort: 80,
IPProtocol: "TCP",
CIDR: "0.0.0.0/0",
}).Extract()
secgroups.CreateRule(client, secgroups.CreateRuleOpts{
ParentGroupID: allInOneSecurityGroup.ID,
FromPort: 22,
ToPort: 22,
IPProtocol: "TCP",
CIDR: "0.0.0.0/0",
}).Extract()
}
pager = secgroups.List(client)
page, _ = pager.AllPages()
secgroupList, _ = secgroups.ExtractSecurityGroups(page)
fmt.Println(secgroupList)
// step-11
userData := `#!/usr/bin/env bash
curl -L -s https://git.openstack.org/cgit/openstack/faafo/plain/contrib/install.sh | bash -s -- \
-i faafo -i messaging -r api -r worker -r demo
`
// step-12
fmt.Println("Checking for existing instance...")
instanceName = "all-in-one"
instanceExists := false
pager = servers.List(client, servers.ListOpts{})
page, _ = pager.AllPages()
serverList, _ = servers.ExtractServers(page)
for _, s := range serverList {
if s.Name == instanceName {
testingInstance = &s
instanceExists = true
break
}
}
if instanceExists {
fmt.Println("Instance " + testingInstance.Name + " already exists. Skipping creation.")
} else {
opts := servers.CreateOpts{
Name: instanceName,
ImageRef: image.ID,
FlavorRef: flavor.ID,
SecurityGroups: []string{securityGroupName},
UserData: []byte(userData),
}
testingInstance, _ = servers.Create(client, keypairs.CreateOptsExt{
CreateOptsBuilder: opts,
KeyName: keyPairName,
}).Extract()
}
servers.WaitForStatus(client, testingInstance.ID, "ACTIVE", 300)
pager = servers.List(client, servers.ListOpts{})
page, _ = pager.AllPages()
serverList, _ = servers.ExtractServers(page)
fmt.Println(serverList)
// step-13
var privateIP string
for t, addrs := range testingInstance.Addresses {
if t != "private" || len(privateIP) != 0 {
continue
}
addrs, ok := addrs.([]interface{})
if !ok {
continue
}
for _, addr := range addrs {
a, ok := addr.(map[string]interface{})
if !ok || a["version"].(float64) != 4 {
continue
}
ip, ok := a["addr"].(string)
if ok && len(ip) != 0 {
privateIP = ip
fmt.Println("Private IP found: " + privateIP)
break
}
}
}
// step-14
var publicIP string
for t, addrs := range testingInstance.Addresses {
if t != "public" || len(publicIP) != 0 {
continue
}
addrs, ok := addrs.([]interface{})
if !ok {
continue
}
for _, addr := range addrs {
a, ok := addr.(map[string]interface{})
if !ok || a["version"].(float64) != 4 {
continue
}
ip, ok := a["addr"].(string)
if ok && len(ip) != 0 {
publicIP = ip
fmt.Println("Public IP found: " + publicIP)
break
}
}
}
// step-15
fmt.Println("Checking for unused Floating IP...")
var unusedFloatingIP string
pager = floatingip.List(client)
page, _ = pager.AllPages()
floatingIPList, _ := floatingip.ExtractFloatingIPs(page)
for _, ip := range floatingIPList {
if ip.InstanceID == "" {
unusedFloatingIP = ip.IP
break
}
}
networkClient, _ := openstack.NewNetworkV2(provider, gophercloud.EndpointOpts{
Region: regionName,
})
pager = networks.List(networkClient, networks.ListOpts{})
page, _ = pager.AllPages()
poolList, _ := external.ExtractList(page)
for _, pool := range poolList {
if len(unusedFloatingIP) != 0 || !pool.External {
continue
}
fmt.Println("Allocating new Floating IP from pool: " + pool.Name)
f, _ := floatingip.Create(client, floatingip.CreateOpts{Pool: pool.Name}).Extract()
unusedFloatingIP = f.IP
}
// step-16
if len(publicIP) != 0 {
fmt.Println("Instance " + testingInstance.Name + " already has a public ip. Skipping attachment.")
} else {
floatingip.Associate(client, testingInstance.ID, unusedFloatingIP)
}
// step-17
var actualIPAddress string
if len(publicIP) != 0 {
actualIPAddress = publicIP
} else if len(unusedFloatingIP) != 0 {
actualIPAddress = unusedFloatingIP
} else {
actualIPAddress = privateIP
}
fmt.Println("The Fractals app will be deployed to http://" + actualIPAddress)
}