Add a RADOS Gateway node¶

This section describes how to add a RADOS Gateway (rgw) node to an existing Ceph cluster.

To add a RADOS Gateway node:

1. In your project repository, add the following lines to the cluster/ceph/init.yml and modify them according to your environment:

   _param:
     ceph_rgw_node04_hostname: rgw04
     ceph_rgw_node04_address: 172.16.47.162
   linux:
     network:
       host:
         rgw04:
           address: ${_param:ceph_rgw_node04_address}
           names:
           - ${_param:ceph_rgw_node04_hostname}
           - ${_param:ceph_rgw_node04_hostname}.${_param:cluster_domain}
   

2. Add the following lines to the cluster/ceph/rgw.yml file:

   parameters:
     _param:
       cluster_node04_hostname: ${_param:ceph_rgw_node04_hostname}
       cluster_node04_address: ${_param:ceph_rgw_node04_address}
     ceph:
       common:
         keyring:
           rgw.rgw04:
             caps:
               mon: "allow rw"
               osd: "allow rwx"
     haproxy:
       proxy:
         listen:
           radosgw:
             servers:
               - name: ${_param:cluster_node04_hostname}
                 host: ${_param:cluster_node04_address}
                 port: ${_param:haproxy_radosgw_source_port}
                 params: check
   

   Note

   Starting from the MCP 2019.2.10 maintenance update, the capabilities for RADOS Gateway have been restricted. To update the existing capabilities, perform the steps described in Restrict the RADOS Gateway capabilities.

3. Add the following lines to the cluster/infra/config/init.yml file:

   parameters:
     reclass:
       storage:
         node:
           ceph_rgw_node04:
             name: ${_param:ceph_rgw_node04_hostname}
             domain: ${_param:cluster_domain}
             classes:
             - cluster.${_param:cluster_name}.ceph.rgw
             params:
               salt_master_host: ${_param:reclass_config_master}
               linux_system_codename:  ${_param:ceph_rgw_system_codename}
               single_address: ${_param:ceph_rgw_node04_address}
               keepalived_vip_priority: 104
   

4. Add the following lines to the cluster/infra/kvm.yml file and modify infra_kvm_node03_hostname depending on which KVM node the rgw must be running on:

   parameters:
     salt:
       control:
         size:
           ceph.rgw:
             cpu: 8
             ram: 16384
             disk_profile: small
             net_profile: default
         cluster:
           internal:
             node:
               rgw04:
                 name: ${_param:ceph_rgw_node04_hostname}
                 provider: ${_param:infra_kvm_node03_hostname}.${_param:cluster_domain}
                 image: ${_param:salt_control_xenial_image}
                 size: ceph.rgw
   

5. Log in to the Jenkins web UI.

6. Open the Ceph - add node pipeline.

7. Specify the following parameters:

   Parameter	Description and values
   SALT_MASTER_CREDENTIALS	The Salt Master credentials to use for connection, defaults to salt.
   SALT_MASTER_URL	The Salt Master node host URL with the salt-api port, defaults to the jenkins_salt_api_url parameter. For example, http://172.18.170.27:6969.
   HOST	Add the Salt target name of the new RADOS Gateway node. For example, rgw04*.
   HOST_TYPE	Add rgw as the type of Ceph node that is going to be added.

8. Click Deploy.

The Ceph - add node pipeline workflow:

1. Launch RADOS Gateway VMs.

2. Run the reclass state.

3. Run the linux, openssh, salt, ntp, rsyslog, keepalived, haproxy, ceph.radosgw states.