Cluster mode

[HeinHtet Aung]

in tinode external config file I saw this 

// List of available nodes.
"nodes": [
// Name and TCP address of every node in the cluster. The ports 12001..12003
// are cluster communication ports. They don't need to be exposed to end-users.
{"name": "one", "addr":"localhost:12001"},
{"name": "two", "addr":"localhost:12002"},
{"name": "three", "addr":"localhost:12003"}
],

So , if I want to run 4 node, do I need to update this ?, now I didn't use these external config file, if need to update , Is there any way to update from outside without using external config

Thanks

[Gene]

On Monday, December 9, 2024 at 1:31:46 PM UTC+3 HeinHtet Aung wrote:

in tinode external config file I saw this 

// List of available nodes.
"nodes": [
// Name and TCP address of every node in the cluster. The ports 12001..12003
// are cluster communication ports. They don't need to be exposed to end-users.
{"name": "one", "addr":"localhost:12001"},
{"name": "two", "addr":"localhost:12002"},
{"name": "three", "addr":"localhost:12003"}
],

So , if I want to run 4 node, do I need to update this ?,

Yes.

 

now I didn't use these external config file, if need to update , Is there any way to update from outside without using external config

I don't understand your question. Are you asking about a docker container?

 

Thanks

[HeinHtet Aung]

Sorry for my confuse question, now I got it,  now my tinode server with cluster mode is running in docker container ( I run 3 node), So from client side(tinode web app and python simple chat bot),  which node's endpoint need to call because now I have 3 endpoint for 3 node ?

[Gene]

On Monday, December 9, 2024 at 5:57:19 PM UTC+3 HeinHtet Aung wrote:

Sorry for my confuse question, now I got it,  now my tinode server with cluster mode is running in docker container ( I run 3 node), So from client side(tinode web app and python simple chat bot),  which node's endpoint need to call because now I have 3 endpoint for 3 node ?

You need a load balancer. For example https://en.wikipedia.org/wiki/Round-robin_DNS or https://nginx.org/en/docs/http/load_balancing.html

[HeinHtet Aung]

Thanks, Gene,  now I got it previously I already tried with load balancer but at that time I was using single instance mode, that why it did not work when I run two tinode servers, 

now I run with cluster mode in Kubernetes , I updated config file like this :

          "cluster_config": {

            // Name of this node. Can be assigned from the command line as --cluster_self.

            // Empty string disables clustering.

            "self": "tinode-1",

            // List of available nodes.

            "nodes": [

              // Name and TCP address of every node in the cluster. The ports 12001..12003

              // are cluster communication ports. They don't need to be exposed to end-users.

              {"name": "tinode-1", "addr": "tinode-1.tinode.svc.cluster.local:12001"}

            ],

Now I just run only one server with cluster mode, but seems like have some issues, this is a private link for tinode-1  ("tinode-1.tinode.svc.cluster.local:12001")

When I check log I see a connection fail error for tinode-1 ""error: unable to upgrade connection: container not found ("tinode-1")""

 error may be I don't know try to call that endpoint but at that time, the service is not ready yet.

I already tryed with docker-compose , it is working fine, having issue in Kubernetes

Thanks

[Gene]

It looks like you are running a single node in cluster mode. That does not make sense and is not supported. You should not run a single node in cluster mode. 

The issues you are having are not specific to Tinode. I would suggest you to hire a competent sysadmin.