Cloudify cluster day 2 operations

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Introduction

Cloudify HA solution can contains three different clusters of database nodes, message queue brokers and Cloudify Managers. This require the ability to manage those cluster, which include add/removing/listing/custom-action to the cluster.

Cloudify management service operations

For removing a management service cluster node, please run on a management node (not the one you wish to remove):

   cfy cluster remove <A resolvable hostname>

For adding a management service cluster node, please install the new node on the same network settings as in Cloudify management service nodes.

Message queue cluster operations

A new broker node (an installed node) can be added to the cluster by running the following:
- Run the following command to connect the broker to the cluster:
```
   cfy_manager brokers add -j\--join-node <A resolvable hostname which complies to the format rabbit@<hostname> >
```
- Run the following command to register the new broker node at the Cloudify management service:
```
  cfy cluster brokers add <new broker name> <new broker address>
```
Listing all the current message queue brokers in the cluster is retrieved by running the following command:
```
   cfy_manager brokers list
```
An existing broker node can be removed from the cluster by running the following command:
- Run the following command to remove the broker from the cluster:
```
   cfy_manager brokers remove -r\--remove-node <nodename>
```
- Run the following command to unregister the new broker node at the Cloudify management service:
```
   cfy cluster brokers remove <broker name>
```

Database cluster operations

Listing all the current database nodes in the cluster is retrieved by running the following command:

   cfy_manager dbs list

A new database node (an installed node) can be added to the cluster by running the following command:
- Database’s node id can be obtained by running cfy_manager node get-id.

   cfy_manager dbs add -a\--address <Node address> -i\--node-id <Node's cloudify node id> -n\--hostname <node's hostname>

An existing database node can be removed from the cluster by running the following command:
- Database’s node id can be obtained by running cfy_manager node get-id.

   cfy_manager dbs remove -a\--address <node's address> -i\--node-id <Node's cloudify node id>

If a database node becomes unhealthy according to the cluster status, it can be re-initialized by running the following command:

   cfy_manager dbs reinit -a\--address <node's address>

For switching the current database master node in the database cluster by running the following command:

   cfy_manager dbs set-master -a\--address <node's address>