how to Shared jasmin configuration in HA scenario

[Ettore Pelliccioni]

Hi,

First, congratulations for this project, your team do a great job!


Now, i am doing a test scenario for High Disponibility deployement (HA),

I actually use HAProxy cluster version 1.6 to load balance HTTP /MT submits with 2 instance of Jasmin (ubuntu) virtual machines.

Next I will create a cluster for RabbitMQ and redis, to share jasmin messages, but How can I share the jasmin users /connectors / routing/ filters setups between Jasmin virtual machines? actually i repeat the same configuration on each node, there is a more easy way?


Thanks in advance,

[Bruno C]

Hi and thank you !

How are you doing HA ? loadbalancing (active/active) or failover (active/standby) ? and do you have a shared disk between nodes ?

[Ettore Pelliccioni]

Hi Bruno

I actually use openvz(proxmox enviroment cluster), and virtual machine disks are in a nfs share,  I create a two vps nodes in failover with HAProxy cluster with Keepalive and a virtual ip address, serving the http port (1401) por sms mt delivery in http mode, and loadbalance to two vps with jasmin on ubuntu 15.04. each jasmin installation is independent, no share between them, and finally then connect smpp to a jasmin as gateway to operators (KVM).


I use rsync to copy /etc/jasmin/store, to jasmin nodes and replicate configs. It seems to be ok.

I plan to setup two vps to cluster rabbitmq and redis, in order to share the common spaces to messages. Any suggestions?


Thanks in advance

[Ettore Pelliccioni]

The scenario is like this:


                                                                            HAProxy VPS01 (MASTER)
                                                                           /                                          \
                                                                                                                       JASMIN USERS GW VPS01
                                                                                                                                                                   \
Virtual IP (http://smsmt:1401)   FAILOVER HA -  LOADBALANCING 1:1                                                             JASMIN GATEWAY KVM  => TELCO
                                                                                                                                                                   /
                                                                                                                       JASMIN USERS GW VPS02
                                                                           \                                         /
                                                                            HAProxy VPS02 (BACKUP)

I have another question, in order to share user configs between jasmin nodes (billing, per examble:  the mt_messaging_cred quota sms_count ) how this can be done?, Actually I do this at last jasmin KVM instance (the gateway to operators).

Regards,

[Bruno C]

Ettore, i didnt get you, please send a clear architecture overview so i can help you.

[Ettore Pelliccioni]

Hi Bruno

The architecture overview:

1.- HAPROXY (frontend):
2 x VPS DEBIAN 7 (openvz)
Haproxy V.1.6
Keepalive
Virtual IP to bind HTTP port 1401 (default http jasmin port for sms mt delivery).
load balance to jasmin farm servers (users-clients config)

2.- JASMIN-USERS CLIENTS (farm - backend):

2 x VPS  Ubuntu 15.04 (openvz)
Jasmin v0.8 (jasmin + redis + rabbitmq)
same replicated configuration (rsync /etc/jasmin/store)
no share space

3.- JASMIN TELCO-GATEWAY (BILLING)
1 x HVM Ubuntu 15.04 (KVM)
Jasmin v0.6.rc (jasmin + redis + rabbitmq)
no share space. Billing (SMS-count)


Actually, stage 3 (Jasmin-Telco Gateway) is a important point of failure, i wish to replace this with a redis/rabbitmq cluster (as a share space) like this "http://www.101tech.net/2014/08/08/highly-available-redis-cluster/", and do directly telco connection to each node on stage 2 (Jasmin Users VPS), increase bandwitdh with adding more vps nodes, and make the system more reliable, in case of a node failure.

Also i need to be able to manage the billing in a centralized way.

Thanks in advance.

Ettore

[Bruno C]

I understand you have active/active deployment, how are you synchronizing configs between active nodes ?

For example, if you add a user on node 1, how will it be replicated to node 2 ? same if user 1 on node 1 is disabled, how to disable it on node 2 ?

I guess replicating /etc/config/store using rsync is not sufficient as Jasmin do timed persistence but does load the config only on boot, so even if you update the config on disk, Jasmin will not take it into consideration and may even replace it when auto persistence is enabled.

Is my understanding right ?

[Ettore Pelliccioni]

Yes you are right.

I will finísh the redis/rabbitmq cluster, but if believe that if the jasmin configuration is stored in the redis cluster and then common in all nodes, it would be the right solution.

Regards

[Bruno C]

This feature is in the backlog: https://github.com/jookies/jasmin/issues/292

but not planned yet, meanwhile, i know users doing sync through inhouse apis.

[Ettore Pelliccioni]

Ok i understand...

Meanwhile the provisioning of the users and other configurations may be done turning off the autopersist feature and definíng a master where will do all the configurations,set a shared mount or filesystem for /etc/jasmin/store and then a reload from the others nodes slaves

The issue will be the balance / billing because when a user check balance o try to send a new sms can obtain diferents acounting valúes as use differents nodes each time.

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Atentamente,
Ing. Ettore Eliseo Pelliccioni Monrroy

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