=========== RGW Service =========== .. _cephadm-deploy-rgw: Deploy RGWs =========== Cephadm deploys radosgw as a collection of daemons that manage a single-cluster deployment or a particular *realm* and *zone* in a multisite deployment. (For more information about realms and zones, see :ref:`multisite`.) Note that with cephadm, radosgw daemons are configured via the monitor configuration database instead of via a `ceph.conf` or the command line. If that configuration isn't already in place (usually in the ``client.rgw.`` section), then the radosgw daemons will start up with default settings (e.g., binding to port 80). To deploy a set of radosgw daemons, with an arbitrary service name *name*, run the following command: .. prompt:: bash # ceph orch apply rgw ** [--realm=**] [--zone=**] --placement="** [** ...]" Trivial setup ------------- For example, to deploy 2 RGW daemons (the default) for a single-cluster RGW deployment under the arbitrary service id *foo*: .. prompt:: bash # ceph orch apply rgw foo .. _cephadm-rgw-designated_gateways: Designated gateways ------------------- A common scenario is to have a labeled set of hosts that will act as gateways, with multiple instances of radosgw running on consecutive ports 8000 and 8001: .. prompt:: bash # ceph orch host label add gwhost1 rgw # the 'rgw' label can be anything ceph orch host label add gwhost2 rgw ceph orch apply rgw foo '--placement=label:rgw count-per-host:2' --port=8000 See also: :ref:`cephadm_co_location`. .. _cephadm-rgw-networks: Specifying Networks ------------------- The RGW service can have the network they bind to configured with a yaml service specification. example spec file: .. code-block:: yaml service_type: rgw service_id: foo placement: label: rgw count_per_host: 2 networks: - 192.169.142.0/24 spec: rgw_frontend_port: 8080 Passing Frontend Extra Arguments -------------------------------- The RGW service specification can be used to pass extra arguments to the rgw frontend by using the `rgw_frontend_extra_args` arguments list. example spec file: .. code-block:: yaml service_type: rgw service_id: foo placement: label: rgw count_per_host: 2 spec: rgw_realm: myrealm rgw_zone: myzone rgw_frontend_type: "beast" rgw_frontend_port: 5000 rgw_frontend_extra_args: - "tcp_nodelay=1" - "max_header_size=65536" .. note:: cephadm combines the arguments from the `spec` section and the ones from the `rgw_frontend_extra_args` into a single space-separated arguments list which is used to set the value of `rgw_frontends` configuration parameter. Multisite zones --------------- To deploy RGWs serving the multisite *myorg* realm and the *us-east-1* zone on *myhost1* and *myhost2*: .. prompt:: bash # ceph orch apply rgw east --realm=myorg --zonegroup=us-east-zg-1 --zone=us-east-1 --placement="2 myhost1 myhost2" Note that in a multisite situation, cephadm only deploys the daemons. It does not create or update the realm or zone configurations. To create a new realms, zones and zonegroups you can use :ref:`mgr-rgw-module` or manually using something like: .. prompt:: bash # radosgw-admin realm create --rgw-realm= .. prompt:: bash # radosgw-admin zonegroup create --rgw-zonegroup= --master .. prompt:: bash # radosgw-admin zone create --rgw-zonegroup= --rgw-zone= --master .. prompt:: bash # radosgw-admin period update --rgw-realm= --commit See :ref:`orchestrator-cli-placement-spec` for details of the placement specification. See :ref:`multisite` for more information of setting up multisite RGW. See also :ref:`multisite`. Setting up HTTPS ---------------- In order to enable HTTPS for RGW services, apply a spec file following this scheme: .. code-block:: yaml service_type: rgw service_id: myrgw spec: rgw_frontend_ssl_certificate: | -----BEGIN PRIVATE KEY----- V2VyIGRhcyBsaWVzdCBpc3QgZG9vZi4gTG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFt ZXQsIGNvbnNldGV0dXIgc2FkaXBzY2luZyBlbGl0ciwgc2VkIGRpYW0gbm9udW15 IGVpcm1vZCB0ZW1wb3IgaW52aWR1bnQgdXQgbGFib3JlIGV0IGRvbG9yZSBtYWdu YSBhbGlxdXlhbSBlcmF0LCBzZWQgZGlhbSB2b2x1cHR1YS4gQXQgdmVybyBlb3Mg ZXQgYWNjdXNhbSBldCBqdXN0byBkdW8= -----END PRIVATE KEY----- -----BEGIN CERTIFICATE----- V2VyIGRhcyBsaWVzdCBpc3QgZG9vZi4gTG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFt ZXQsIGNvbnNldGV0dXIgc2FkaXBzY2luZyBlbGl0ciwgc2VkIGRpYW0gbm9udW15 IGVpcm1vZCB0ZW1wb3IgaW52aWR1bnQgdXQgbGFib3JlIGV0IGRvbG9yZSBtYWdu YSBhbGlxdXlhbSBlcmF0LCBzZWQgZGlhbSB2b2x1cHR1YS4gQXQgdmVybyBlb3Mg ZXQgYWNjdXNhbSBldCBqdXN0byBkdW8= -----END CERTIFICATE----- ssl: true Then apply this yaml document: .. prompt:: bash # ceph orch apply -i myrgw.yaml Note the value of ``rgw_frontend_ssl_certificate`` is a literal string as indicated by a ``|`` character preserving newline characters. Service specification --------------------- .. py:currentmodule:: ceph.deployment.service_spec .. autoclass:: RGWSpec :members: .. _orchestrator-haproxy-service-spec: High availability service for RGW ================================= The *ingress* service allows you to create a high availability endpoint for RGW with a minimum set of configuration options. The orchestrator will deploy and manage a combination of haproxy and keepalived to provide load balancing on a floating virtual IP. If the RGW service is configured with SSL enabled, then the ingress service will use the `ssl` and `verify none` options in the backend configuration. Trust verification is disabled because the backends are accessed by IP address instead of FQDN. .. image:: ../../images/HAProxy_for_RGW.svg There are N hosts where the ingress service is deployed. Each host has a haproxy daemon and a keepalived daemon. A virtual IP is automatically configured on only one of these hosts at a time. Each keepalived daemon checks every few seconds whether the haproxy daemon on the same host is responding. Keepalived will also check that the master keepalived daemon is running without problems. If the "master" keepalived daemon or the active haproxy is not responding, one of the remaining keepalived daemons running in backup mode will be elected as master, and the virtual IP will be moved to that node. The active haproxy acts like a load balancer, distributing all RGW requests between all the RGW daemons available. Prerequisites ------------- * An existing RGW service. Deploying --------- Use the command:: ceph orch apply -i Service specification --------------------- It is a yaml format file with the following properties: .. code-block:: yaml service_type: ingress service_id: rgw.something # adjust to match your existing RGW service placement: hosts: - host1 - host2 - host3 spec: backend_service: rgw.something # adjust to match your existing RGW service virtual_ip: / # ex: 192.168.20.1/24 frontend_port: # ex: 8080 monitor_port: # ex: 1967, used by haproxy for load balancer status virtual_interface_networks: [ ... ] # optional: list of CIDR networks use_keepalived_multicast: # optional: Default is False. vrrp_interface_network: / # optional: ex: 192.168.20.0/24 health_check_interval: # optional: Default is 2s. ssl_cert: | # optional: SSL certificate and key -----BEGIN CERTIFICATE----- ... -----END CERTIFICATE----- -----BEGIN PRIVATE KEY----- ... -----END PRIVATE KEY----- .. code-block:: yaml service_type: ingress service_id: rgw.something # adjust to match your existing RGW service placement: hosts: - host1 - host2 - host3 spec: backend_service: rgw.something # adjust to match your existing RGW service virtual_ips_list: - / # ex: 192.168.20.1/24 - / # ex: 192.168.20.2/24 - / # ex: 192.168.20.3/24 frontend_port: # ex: 8080 monitor_port: # ex: 1967, used by haproxy for load balancer status virtual_interface_networks: [ ... ] # optional: list of CIDR networks first_virtual_router_id: # optional: default 50 health_check_interval: # optional: Default is 2s. ssl_cert: | # optional: SSL certificate and key -----BEGIN CERTIFICATE----- ... -----END CERTIFICATE----- -----BEGIN PRIVATE KEY----- ... -----END PRIVATE KEY----- where the properties of this service specification are: * ``service_type`` Mandatory and set to "ingress" * ``service_id`` The name of the service. We suggest naming this after the service you are controlling ingress for (e.g., ``rgw.foo``). * ``placement hosts`` The hosts where it is desired to run the HA daemons. An haproxy and a keepalived container will be deployed on these hosts. These hosts do not need to match the nodes where RGW is deployed. * ``virtual_ip`` The virtual IP (and network) in CIDR format where the ingress service will be available. * ``virtual_ips_list`` The virtual IP address in CIDR format where the ingress service will be available. Each virtual IP address will be primary on one node running the ingress service. The number of virtual IP addresses must be less than or equal to the number of ingress nodes. * ``virtual_interface_networks`` A list of networks to identify which ethernet interface to use for the virtual IP. * ``frontend_port`` The port used to access the ingress service. * ``ssl_cert``: SSL certificate, if SSL is to be enabled. This must contain the both the certificate and private key blocks in .pem format. * ``use_keepalived_multicast`` Default is False. By default, cephadm will deploy keepalived config to use unicast IPs, using the IPs of the hosts. The IPs chosen will be the same IPs cephadm uses to connect to the machines. But if multicast is prefered, we can set ``use_keepalived_multicast`` to ``True`` and Keepalived will use multicast IP (224.0.0.18) to communicate between instances, using the same interfaces as where the VIPs are. * ``vrrp_interface_network`` By default, cephadm will configure keepalived to use the same interface where the VIPs are for VRRP communication. If another interface is needed, it can be set via ``vrrp_interface_network`` with a network to identify which ethernet interface to use. * ``first_virtual_router_id`` Default is 50. When deploying more than 1 ingress, this parameter can be used to ensure each keepalived will have different virtual_router_id. In the case of using ``virtual_ips_list``, each IP will create its own virtual router. So the first one will have ``first_virtual_router_id``, second one will have ``first_virtual_router_id`` + 1, etc. Valid values go from 1 to 255. * ``health_check_interval`` Default is 2 seconds. This parameter can be used to set the interval between health checks for the haproxy with the backend servers. .. _ingress-virtual-ip: Selecting ethernet interfaces for the virtual IP ------------------------------------------------ You cannot simply provide the name of the network interface on which to configure the virtual IP because interface names tend to vary across hosts (and/or reboots). Instead, cephadm will select interfaces based on other existing IP addresses that are already configured. Normally, the virtual IP will be configured on the first network interface that has an existing IP in the same subnet. For example, if the virtual IP is 192.168.0.80/24 and eth2 has the static IP 192.168.0.40/24, cephadm will use eth2. In some cases, the virtual IP may not belong to the same subnet as an existing static IP. In such cases, you can provide a list of subnets to match against existing IPs, and cephadm will put the virtual IP on the first network interface to match. For example, if the virtual IP is 192.168.0.80/24 and we want it on the same interface as the machine's static IP in 10.10.0.0/16, you can use a spec like:: service_type: ingress service_id: rgw.something spec: virtual_ip: 192.168.0.80/24 virtual_interface_networks: - 10.10.0.0/16 ... A consequence of this strategy is that you cannot currently configure the virtual IP on an interface that has no existing IP address. In this situation, we suggest configuring a "dummy" IP address is an unroutable network on the correct interface and reference that dummy network in the networks list (see above). Useful hints for ingress ------------------------ * It is good to have at least 3 RGW daemons. * We recommend at least 3 hosts for the ingress service. Further Reading =============== * :ref:`object-gateway` * :ref:`mgr-rgw-module`