GlusterFS: Allow for a separate registry-specific playbook

Signed-off-by: Jose A. Rivera <jarrpa@redhat.com>

10 files changed, 125 insertions, 2 deletions

diff --git a/playbooks/byo/openshift-cluster/cluster_hosts.yml b/playbooks/byo/openshift-cluster/cluster_hosts.yml
index 268a65415..9d086b7b6 100644
--- a/playbooks/byo/openshift-cluster/cluster_hosts.yml
+++ b/playbooks/byo/openshift-cluster/cluster_hosts.yml
@@ -15,6 +15,8 @@ g_nfs_hosts: "{{ groups.nfs | default([]) }}"
 
 g_glusterfs_hosts: "{{ groups.glusterfs | default([]) }}"
 
+g_glusterfs_registry_hosts: "{{ groups.glusterfs_registry | default(g_glusterfs_hosts) }}"
+
 g_all_hosts: "{{ g_master_hosts | union(g_node_hosts) | union(g_etcd_hosts)
                  | union(g_lb_hosts) | union(g_nfs_hosts)
                  | union(g_new_node_hosts)| union(g_new_master_hosts)
diff --git a/playbooks/byo/openshift-glusterfs/README.md b/playbooks/byo/openshift-glusterfs/README.md
new file mode 100644
index 000000000..823ad5e29
--- /dev/null
+++ b/playbooks/byo/openshift-glusterfs/README.md
@@ -0,0 +1,92 @@
+# OpenShift GlusterFS Playbooks
+
+These playbooks are intended to enable the use of GlusterFS volumes by pods in
+OpenShift. While they try to provide a sane set of defaults they do cover a
+variety of scenarios and configurations, so read carefully. :)
+
+## Playbook: config.yml
+
+This is the main playbook that integrates GlusterFS into a new or existing
+OpenShift cluster. It will also, if specified, configure a hosted Docker
+registry with GlusterFS backend storage.
+
+This playbook requires the `glusterfs` group to exist in the Ansible inventory
+file. The hosts in this group are the nodes of the GlusterFS cluster.
+
+ * If this is a newly configured cluster each host must have a
+   `glusterfs_devices` variable defined, each of which must be a list of block
+   storage devices intended for use only by the GlusterFS cluster. If this is
+   also an external GlusterFS cluster, you must specify
+   `openshift_storage_glusterfs_is_native=False`. If the cluster is to be
+   managed by an external heketi service you must also specify
+   `openshift_storage_glusterfs_heketi_is_native=False` and
+   `openshift_storage_glusterfs_heketi_url=<URL>` with the URL to the heketi
+   service. All these variables are specified in `[OSEv3:vars]`,
+ * If this is an existing cluster you do not need to specify a list of block
+   devices but you must specify the following variables in `[OSEv3:vars]`:
+   * `openshift_storage_glusterfs_is_missing=False`
+   * `openshift_storage_glusterfs_heketi_is_missing=False`
+
+By default, pods for a native GlusterFS cluster will be created in the
+`default` namespace. To change this, specify
+`openshift_storage_glusterfs_namespace=<other namespace>` in `[OSEv3:vars]`.
+
+To configure the deployment of a Docker registry with GlusterFS backend
+storage, specify `openshift_hosted_registry_storage_kind=glusterfs` in
+`[OSEv3:vars]`. To create a separate GlusterFS cluster for use only by the
+registry, specify a `glusterfs_registry` group that is populated as the
+`glusterfs` is with the nodes for the separate cluster. If no
+`glusterfs_registry` group is specified, the cluster defined by the `glusterfs`
+group will be used.
+
+**NOTE:** For each namespace that is to have access to GlusterFS volumes an
+Enpoints resource pointing to the GlusterFS cluster nodes and a corresponding
+Service resource must be created. If dynamic provisioning using StorageClasses
+is configure, these resources are created automatically in the namespaces that
+require them. This playbook also takes care of creating these resources in the
+namespaces used for deployment.
+
+An example of a minimal inventory file:
+```
+[OSEv3:children]
+masters
+nodes
+glusterfs
+
+[OSEv3:vars]
+ansible_ssh_user=root
+deployment_type=origin
+
+[masters]
+master
+
+[nodes]
+node0
+node1
+node2
+
+[glusterfs]
+node0 glusterfs_devices='[ "/dev/sdb" ]'
+node1 glusterfs_devices='[ "/dev/sdb", "/dev/sdc" ]'
+node2 glusterfs_devices='[ "/dev/sdd" ]'
+```
+
+## Playbook: registry.yml
+
+This playbook is intended for admins who want to deploy a hosted Docker
+registry with GlusterFS backend storage on an existing OpenShift cluster. It
+has all the same requirements and behaviors as `config.yml`.
+
+## Role: openshift_storage_glusterfs
+
+The bulk of the work is done by the `openshift_storage_glusterfs` role. This
+role can handle the deployment of GlusterFS (if it is to be hosted on the
+OpenShift cluster), the registration of GlusterFS nodes (hosted or standalone),
+and (if specified) integration as backend storage for a hosted Docker registry.
+
+See the documentation in the role's directory for further details.
+
+## Role: openshift_hosted
+
+The `openshift_hosted` role recognizes `glusterfs` as a possible storage
+backend for a hosted docker registry.
diff --git a/playbooks/byo/openshift-glusterfs/config.yml b/playbooks/byo/openshift-glusterfs/config.yml
new file mode 100644
index 000000000..3f11f3991
--- /dev/null
+++ b/playbooks/byo/openshift-glusterfs/config.yml
@@ -0,0 +1,10 @@
+---
+- include: ../openshift-cluster/initialize_groups.yml
+  tags:
+  - always
+
+- include: ../../common/openshift-cluster/std_include.yml
+  tags:
+  - always
+
+- include: ../../common/openshift-glusterfs/config.yml
diff --git a/playbooks/byo/openshift-glusterfs/filter_plugins b/playbooks/byo/openshift-glusterfs/filter_plugins
new file mode 120000
index 000000000..99a95e4ca
--- /dev/null
+++ b/playbooks/byo/openshift-glusterfs/filter_plugins
@@ -0,0 +1 @@
+../../../filter_plugins
\ No newline at end of file
diff --git a/playbooks/byo/openshift-glusterfs/lookup_plugins b/playbooks/byo/openshift-glusterfs/lookup_plugins
new file mode 120000
index 000000000..ac79701db
--- /dev/null
+++ b/playbooks/byo/openshift-glusterfs/lookup_plugins
@@ -0,0 +1 @@
+../../../lookup_plugins
\ No newline at end of file
diff --git a/playbooks/byo/openshift-glusterfs/registry.yml b/playbooks/byo/openshift-glusterfs/registry.yml
new file mode 100644
index 000000000..6ee6febdb
--- /dev/null
+++ b/playbooks/byo/openshift-glusterfs/registry.yml
@@ -0,0 +1,10 @@
+---
+- include: ../openshift-cluster/initialize_groups.yml
+  tags:
+  - always
+
+- include: ../../common/openshift-cluster/std_include.yml
+  tags:
+  - always
+
+- include: ../../common/openshift-glusterfs/registry.yml
diff --git a/playbooks/byo/openshift-glusterfs/roles b/playbooks/byo/openshift-glusterfs/roles
new file mode 120000
index 000000000..20c4c58cf
--- /dev/null
+++ b/playbooks/byo/openshift-glusterfs/roles
@@ -0,0 +1 @@
+../../../roles
\ No newline at end of file
diff --git a/playbooks/common/openshift-cluster/evaluate_groups.yml b/playbooks/common/openshift-cluster/evaluate_groups.yml
index 17a177644..46932b27f 100644
--- a/playbooks/common/openshift-cluster/evaluate_groups.yml
+++ b/playbooks/common/openshift-cluster/evaluate_groups.yml
@@ -155,5 +155,5 @@
       groups: oo_glusterfs_to_config
       ansible_ssh_user: "{{ g_ssh_user | default(omit) }}"
       ansible_become: "{{ g_sudo | default(omit) }}"
-    with_items: "{{ g_glusterfs_hosts | default([]) }}"
+    with_items: "{{ g_glusterfs_hosts | union(g_glusterfs_registry_hosts) | default([]) }}"
     changed_when: no
diff --git a/playbooks/common/openshift-glusterfs/config.yml b/playbooks/common/openshift-glusterfs/config.yml
index 75faf5ba8..1efdfb336 100644
--- a/playbooks/common/openshift-glusterfs/config.yml
+++ b/playbooks/common/openshift-glusterfs/config.yml
@@ -12,7 +12,9 @@
     - service: glusterfs_bricks
       port: "49152-49251/tcp"
   roles:
-  - os_firewall
+  - role: os_firewall
+    when:
+    - openshift_storage_glusterfs_is_native | default(True)
 
 - name: Configure GlusterFS
   hosts: oo_first_master
diff --git a/playbooks/common/openshift-glusterfs/registry.yml b/playbooks/common/openshift-glusterfs/registry.yml
new file mode 100644
index 000000000..caae79f0f
--- /dev/null
+++ b/playbooks/common/openshift-glusterfs/registry.yml
@@ -0,0 +1,4 @@
+---
+- include: config.yml
+
+- include: ../openshift-cluster/openshift_hosted.yml