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tls-termination-sni.md

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Configure Octavia Loadbalancer for Using TLS Termination

This example is exactly like TLS Termination, except that we have multiple TLS certificates that we would like to use on the same listener using Server Name Indication (SNI) technology.

Certificate

Create Certificate if Using Local Network (Optional)

  • Follow this step for testing on local network (ENG)

  • Follow this step for testing on local network (IND)

Certificate required

Here exemplified the domain name that I use is prasta.me signed by intermediate CA btech

Server crt and key certificate

Domain: gangga.me

  • gangga.me.crt.pem
  • gangga.me.key.pem

Domain: prasta.me

  • prasta.me.crt.pem
  • prasta.me.key.pem

Intermediate CA

gangga.me.crt.pem and prasta.me.crt.pem signed by:

  • int.btech.crt.pem

Deploy Barbican

Enable Barbican Service

Run on controller node using regular user (non-root)

nano /etc/kolla/globals.yml

Uncoment enable_barbican section

enable_barbican=yes

Deploy barbican

source ~/kolla-install/bin/activate
kolla-ansible deploy -t barbican

Install Barbican client command

pip install python-barbicanclient

Configuration Step

Instance

Previously there were 2 instances running nginx services on private-net

Each nginx has configured 2 virtual hosts / server blocks with server_name prasta.me and gangga.me

openstack server list

+--------------------------------------+---------+--------+-----------------------------+------------------------------+--------+
| ID                                   | Name    | Status | Networks                    | Image                        | Flavor |
+--------------------------------------+---------+--------+-----------------------------+------------------------------+--------+
| b122eafc-69eb-43ef-9391-9d5c28491b58 | ubuntu1 | ACTIVE | private-net=192.168.100.167 | bionic-server-cloudimg-amd64 | small  |
| ca385bc8-646c-42d0-b96b-038996ac068e | ubuntu0 | ACTIVE | private-net=192.168.100.81  | bionic-server-cloudimg-amd64 | small  |
+--------------------------------------+---------+--------+-----------------------------+------------------------------+--------+

how to configure nginx virtualhost? follow this tutorial

Combine individual server cert, key and intermediate ca to pcks12 format

prasta.me

openssl pkcs12 -export -inkey prasta.me.key.pem -in prasta.me.crt.pem -certfile int.btech.crt.pem -passout pass: -out prasta.me.p12

sudo chown $USER:$USER prasta.me.p12

gangga.me

openssl pkcs12 -export -inkey gangga.me.key.pem -in gangga.me.crt.pem -certfile int.btech.crt.pem -passout pass: -out gangga.me.p12

sudo chown $USER:$USER gangga.me.p12

Store server.p12 to barbican

prasta.me

openstack secret store --name='tls_secret_prasta_me' -t 'application/octet-stream' -e 'base64' --payload="$(base64 < prasta.me.p12)"

gangga.me

openstack secret store --name='tls_secret_gangga_me' -t 'application/octet-stream' -e 'base64' --payload="$(base64 < gangga.me.p12)"

Add acl for the created secret

if you log in as a tenant, change admin user to your user

secret_id1=$(openstack secret list | awk '/ tls_secret_prasta_me / {print $2}')
secret_id2=$(openstack secret list | awk '/ tls_secret_gangga_me / {print $2}')

openstack acl user add -u $(openstack user show admin -c id -f value) $secret_id1
openstack acl user add -u $(openstack user show admin -c id -f value) $secret_id2

Create LoadBalancer on private-subnet

LB_VIP=$(openstack loadbalancer create --name lb1 --vip-subnet-id private-subnet | awk  '/ vip_address / {print $4}')

Create floating ip and associate it to lb vip

Create floating ip

openstack floating ip create --floating-ip-address 10.20.110.50 public-net

associate floating ip to lb vip

openstack floating ip set --port $(openstack port list | grep $LB_VIP | cut -d '|' -f 3) 10.20.110.50

Create Lisneter TLS TERMINATED using SNI

openstack loadbalancer listener create --protocol-port 443 --protocol TERMINATED_HTTPS --name https_listener --default-tls-container=$(openstack secret list | awk '/ tls_secret_prasta_me / {print $2}') --sni-container-refs $(openstack secret list | awk '/ tls_secret_prasta_me / {print $2}') $(openstack secret list | awk '/ tls_secret_gangga_me / {print $2}') -- lb1

note: if the connected web client does not support SNI, this configuration will direct lb to respond using prasta.me certificate

Create Pool and assign instance become pool member

Create pool

openstack loadbalancer pool create --name pool1 --lb-algorithm ROUND_ROBIN --listener https_listener --protocol HTTP

Assign instance to pool

openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.167 --protocol-port 80 pool1
openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.81 --protocol-port 80 pool1

Create Health Monitor

openstack loadbalancer healthmonitor create --delay 5 --max-retries 3 --timeout 5 --type HTTP --url-path / pool1

Redirect http to https (optional)

create http listener

openstack loadbalancer listener create --name http_listener --protocol HTTP --protocol-port 80 lb1

create listener l7policy

openstack loadbalancer l7policy create --action REDIRECT_PREFIX --redirect-prefix https://prasta.me --name policy1 http_listener

openstack loadbalancer l7policy create --action REDIRECT_PREFIX --redirect-prefix https://gangga.me --name policy2 http_listener

create l7rule for l7policy

openstack loadbalancer l7rule create --compare-type STARTS_WITH --type HOST_NAME --value prasta.me policy1

openstack loadbalancer l7rule create --compare-type STARTS_WITH --type HOST_NAME --value gangga.me policy2

Result

prasta.me

prasta prasta

gangga.me

prasta prasta