From 677fd46cf37cab5f995170b3567939d784ebb07a Mon Sep 17 00:00:00 2001 From: Bogdan Dobrelya Date: Wed, 5 Jul 2017 12:46:57 +0200 Subject: Add bastion and ssh config for the static inventory role * Autogenerate SSH config for static inventory and bastion. * When using bastion, use FQDN for inventory's ansible_host and SSH config's Hostname. Simplifies accessing nodes by names instead of private IPs. Signed-off-by: Bogdan Dobrelya --- roles/static_inventory/defaults/main.yml | 13 +++++++++++ roles/static_inventory/tasks/main.yml | 4 ++++ roles/static_inventory/tasks/openstack.yml | 25 ++++++++++++++++++++-- roles/static_inventory/tasks/sshconfig.yml | 13 +++++++++++ roles/static_inventory/templates/inventory.j2 | 4 ++++ .../templates/openstack_ssh_config.j2 | 21 ++++++++++++++++++ 6 files changed, 78 insertions(+), 2 deletions(-) create mode 100644 roles/static_inventory/tasks/sshconfig.yml create mode 100644 roles/static_inventory/templates/openstack_ssh_config.j2 (limited to 'roles') diff --git a/roles/static_inventory/defaults/main.yml b/roles/static_inventory/defaults/main.yml index 315965cde..63de45646 100644 --- a/roles/static_inventory/defaults/main.yml +++ b/roles/static_inventory/defaults/main.yml @@ -4,5 +4,18 @@ refresh_inventory: True inventory: static inventory_path: ~/openstack-inventory +# Either to configure bastion +use_bastion: true + +# SSH user/key/options to access hosts via bastion +ssh_user: openshift +ssh_options: >- + -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no + -o ConnectTimeout=90 -o ControlMaster=auto -o ControlPersist=270s + -o ServerAliveInterval=30 -o GSSAPIAuthentication=no + # SSH key to access nodes private_ssh_key: ~/.ssh/openshift + +# The patch to store the generated config to access bastion/hosts +ssh_config_path: /tmp/ssh.config.ansible diff --git a/roles/static_inventory/tasks/main.yml b/roles/static_inventory/tasks/main.yml index 15c81690e..b58866017 100644 --- a/roles/static_inventory/tasks/main.yml +++ b/roles/static_inventory/tasks/main.yml @@ -4,3 +4,7 @@ - name: Checkpoint in-memory data into a static inventory include: checkpoint.yml + +- name: Generate SSH config for accessing hosts via bastion + include: sshconfig.yml + when: use_bastion|bool diff --git a/roles/static_inventory/tasks/openstack.yml b/roles/static_inventory/tasks/openstack.yml index a25502835..95d0d172f 100644 --- a/roles/static_inventory/tasks/openstack.yml +++ b/roles/static_inventory/tasks/openstack.yml @@ -16,12 +16,14 @@ - name: set_fact for openstack inventory nodes set_fact: + registered_bastion_nodes: "{{ (registered_nodes_output.stdout | from_json) | json_query(q) }}" registered_nodes_floating: "{{ (registered_nodes_output.stdout | from_json) | json_query(q2) }}" vars: q: "[] | [?metadata.group=='infra.{{stack_name}}']" q2: "[] | [?metadata.clusterid=='{{stack_name}}'] | [?public_v4!='']" when: - refresh_inventory|bool + - use_bastion|bool - name: Add cluster nodes w/o floating IPs to inventory with_items: "{{ registered_nodes }}" @@ -29,9 +31,11 @@ add_host: name: '{{ item.name }}' groups: '{{ item.metadata.group }}' - ansible_host: '{{ item.private_v4 }}' + ansible_host: "{% if use_bastion|bool %}{{ item.name }}{% else %}{{ item.private_v4 }}{% endif %}" ansible_fqdn: '{{ item.name }}' + ansible_user: '{{ ssh_user }}' ansible_private_key_file: '{{ private_ssh_key }}' + ansible_ssh_extra_args: '-F {{ ssh_config_path }}' private_v4: '{{ item.private_v4 }}' - name: Add cluster nodes with floating IPs to inventory @@ -40,8 +44,25 @@ add_host: name: '{{ item.name }}' groups: '{{ item.metadata.group }}' - ansible_host: '{{ item.public_v4 }}' + ansible_host: "{% if use_bastion|bool %}{{ item.name }}{% else %}{{ item.private_v4 }}{% endif %}" ansible_fqdn: '{{ item.name }}' + ansible_user: '{{ ssh_user }}' ansible_private_key_file: '{{ private_ssh_key }}' + ansible_ssh_extra_args: '-F {{ ssh_config_path }}' private_v4: '{{ item.private_v4 }}' public_v4: '{{ item.public_v4 }}' + + - name: Add bastion node to inventory + add_host: + name: bastion + groups: bastions + ansible_host: '{{ registered_bastion_nodes[0].public_v4 }}' + ansible_fqdn: '{{ registered_bastion_nodes[0].name }}' + ansible_user: '{{ ssh_user }}' + ansible_private_key_file: '{{ private_ssh_key }}' + ansible_ssh_extra_args: '-F {{ ssh_config_path }}' + private_v4: '{{ registered_bastion_nodes[0].private_v4 }}' + public_v4: '{{ registered_bastion_nodes[0].public_v4 }}' + when: + - registered_bastion_nodes is defined + - use_bastion|bool diff --git a/roles/static_inventory/tasks/sshconfig.yml b/roles/static_inventory/tasks/sshconfig.yml new file mode 100644 index 000000000..7119fe6ff --- /dev/null +++ b/roles/static_inventory/tasks/sshconfig.yml @@ -0,0 +1,13 @@ +--- +- name: set ssh proxy command prefix for accessing nodes via bastion + set_fact: + ssh_proxy_command: >- + ssh {{ ssh_options }} + -i {{ private_ssh_key }} + {{ ssh_user }}@{{ hostvars['bastion'].ansible_host }} + +- name: regenerate ssh config + template: + src: openstack_ssh_config.j2 + dest: "{{ ssh_config_path }}" + mode: 0644 diff --git a/roles/static_inventory/templates/inventory.j2 b/roles/static_inventory/templates/inventory.j2 index 464726a0b..ac74db35c 100644 --- a/roles/static_inventory/templates/inventory.j2 +++ b/roles/static_inventory/templates/inventory.j2 @@ -10,8 +10,12 @@ %} private_v4={{ hostvars[host]['private_v4'] }}{% endif %} {% if 'public_v4' in hostvars[host] %} public_v4={{ hostvars[host]['public_v4'] }}{% endif %} +{% if 'ansible_user' in hostvars[host] +%} ansible_user={{ hostvars[host]['ansible_user'] }}{% endif %} {% if 'ansible_private_key_file' in hostvars[host] %} ansible_private_key_file={{ hostvars[host]['ansible_private_key_file'] }}{% endif %} +{% if 'ansible_ssh_extra_args' in hostvars[host] +%} ansible_ssh_extra_args={{ hostvars[host]['ansible_ssh_extra_args']|quote }}{% endif %} openshift_hostname={{ host }} {% endif %} diff --git a/roles/static_inventory/templates/openstack_ssh_config.j2 b/roles/static_inventory/templates/openstack_ssh_config.j2 new file mode 100644 index 000000000..ad5d1253a --- /dev/null +++ b/roles/static_inventory/templates/openstack_ssh_config.j2 @@ -0,0 +1,21 @@ +Host * + IdentitiesOnly yes + +Host bastion + Hostname {{ hostvars['bastion'].ansible_host }} + IdentityFile {{ hostvars['bastion'].ansible_private_key_file }} + User {{ ssh_user }} + StrictHostKeyChecking no + UserKnownHostsFile=/dev/null + +{% for host in groups['all'] | difference(groups['bastions'][0]) %} + +Host {{ host }} + Hostname {{ hostvars[host].ansible_host }} + ProxyCommand {{ ssh_proxy_command }} -W {{ hostvars[host].private_v4 }}:22 + IdentityFile {{ hostvars[host].ansible_private_key_file }} + User {{ ssh_user }} + StrictHostKeyChecking no + UserKnownHostsFile=/dev/null + +{% endfor %} -- cgit v1.2.3 From df8f5f0e251a014ab30dabd62c17e151b7fe36e8 Mon Sep 17 00:00:00 2001 From: Bogdan Dobrelya Date: Wed, 12 Jul 2017 13:09:45 +0200 Subject: Options for bastion, SSH config, static inventory autogeneration * At the provisioning stage, allow users to auto-generate SSH config, when using a static inventory. * Run playbooks to provsion and post-provision as a separate, when using a bastion. This re-applies the SSH config, which ansible can't do on the fly. * Support a pre-installed bastion node, colocated with the 1st infra node. * With a bastion enabled, reduce floating IP footprint to infra and dns nodes only, effectively isolating a cluster in a private network. Signed-off-by: Bogdan Dobrelya --- roles/openstack-stack/defaults/main.yml | 2 + roles/openstack-stack/tasks/main.yml | 9 +- roles/openstack-stack/templates/heat_stack.yaml.j2 | 25 ++++ .../templates/heat_stack_server_nofloating.yaml.j2 | 149 +++++++++++++++++++++ roles/static_inventory/tasks/openstack.yml | 7 +- roles/static_inventory/templates/inventory.j2 | 5 +- 6 files changed, 187 insertions(+), 10 deletions(-) create mode 100644 roles/openstack-stack/templates/heat_stack_server_nofloating.yaml.j2 (limited to 'roles') diff --git a/roles/openstack-stack/defaults/main.yml b/roles/openstack-stack/defaults/main.yml index 4831d6bc4..803a96389 100644 --- a/roles/openstack-stack/defaults/main.yml +++ b/roles/openstack-stack/defaults/main.yml @@ -4,6 +4,7 @@ ssh_ingress_cidr: 0.0.0.0/0 node_ingress_cidr: 0.0.0.0/0 master_ingress_cidr: 0.0.0.0/0 lb_ingress_cidr: 0.0.0.0/0 +bastion_ingress_cidr: 0.0.0.0/0 num_etcd: 0 num_masters: 1 num_nodes: 1 @@ -11,3 +12,4 @@ num_dns: 1 num_infra: 1 nodes_to_remove: [] etcd_volume_size: 2 +use_bastion: False diff --git a/roles/openstack-stack/tasks/main.yml b/roles/openstack-stack/tasks/main.yml index a53e6350b..9b4855294 100644 --- a/roles/openstack-stack/tasks/main.yml +++ b/roles/openstack-stack/tasks/main.yml @@ -8,7 +8,6 @@ - name: set template paths set_fact: stack_template_path: "{{ stack_template_pre.path }}/stack.yaml" - server_template_path: "{{ stack_template_pre.path }}/server.yaml" user_data_template_path: "{{ stack_template_pre.path }}/user-data" - name: generate HOT stack template from jinja2 template @@ -19,7 +18,13 @@ - name: generate HOT server template from jinja2 template template: src: heat_stack_server.yaml.j2 - dest: "{{ server_template_path }}" + dest: "{{ stack_template_pre.path }}/server.yaml" + +- name: generate HOT server w/o floating IPs template from jinja2 template + template: + src: heat_stack_server_nofloating.yaml.j2 + dest: "{{ stack_template_pre.path }}/server_nofloating.yaml" + when: use_bastion|bool - name: generate user_data from jinja2 template template: diff --git a/roles/openstack-stack/templates/heat_stack.yaml.j2 b/roles/openstack-stack/templates/heat_stack.yaml.j2 index 54941db06..524f466ff 100644 --- a/roles/openstack-stack/templates/heat_stack.yaml.j2 +++ b/roles/openstack-stack/templates/heat_stack.yaml.j2 @@ -156,6 +156,13 @@ resources: port_range_min: 22 port_range_max: 22 remote_ip_prefix: {{ ssh_ingress_cidr }} +{% if use_bastion|bool %} + - direction: ingress + protocol: tcp + port_range_min: 22 + port_range_max: 22 + remote_ip_prefix: {{ bastion_ingress_cidr }} +{% endif %} - direction: ingress protocol: icmp remote_ip_prefix: {{ ssh_ingress_cidr }} @@ -458,7 +465,11 @@ resources: properties: count: {{ num_etcd }} resource_def: +{% if use_bastion|bool %} + type: server_nofloating.yaml +{% else %} type: server.yaml +{% endif %} properties: name: str_replace: @@ -483,7 +494,9 @@ resources: secgrp: - { get_resource: {% if openstack_flat_secgrp|default(False)|bool %}flat-secgrp{% else %}etcd-secgrp{% endif %} } - { get_resource: common-secgrp } +{% if not use_bastion|bool %} floating_network: {{ external_network }} +{% endif %} net_name: str_replace: template: openshift-ansible-cluster_id-net @@ -540,7 +553,11 @@ resources: properties: count: {{ num_masters }} resource_def: +{% if use_bastion|bool %} + type: server_nofloating.yaml +{% else %} type: server.yaml +{% endif %} properties: name: str_replace: @@ -573,7 +590,9 @@ resources: {% endif %} {% endif %} - { get_resource: common-secgrp } +{% if not use_bastion|bool %} floating_network: {{ external_network }} +{% endif %} net_name: str_replace: template: openshift-ansible-cluster_id-net @@ -590,7 +609,11 @@ resources: removal_policies: - resource_list: {{ nodes_to_remove }} resource_def: +{% if use_bastion|bool %} + type: server_nofloating.yaml +{% else %} type: server.yaml +{% endif %} properties: name: str_replace: @@ -621,7 +644,9 @@ resources: secgrp: - { get_resource: {% if openstack_flat_secgrp|default(False)|bool %}flat-secgrp{% else %}node-secgrp{% endif %} } - { get_resource: common-secgrp } +{% if not use_bastion|bool %} floating_network: {{ external_network }} +{% endif %} net_name: str_replace: template: openshift-ansible-cluster_id-net diff --git a/roles/openstack-stack/templates/heat_stack_server_nofloating.yaml.j2 b/roles/openstack-stack/templates/heat_stack_server_nofloating.yaml.j2 new file mode 100644 index 000000000..792a8b90c --- /dev/null +++ b/roles/openstack-stack/templates/heat_stack_server_nofloating.yaml.j2 @@ -0,0 +1,149 @@ +heat_template_version: 2016-10-14 + +description: OpenShift cluster server w/o floating IP + +parameters: + + name: + type: string + label: Name + description: Name + + group: + type: string + label: Host Group + description: The Primary Ansible Host Group + default: host + + cluster_env: + type: string + label: Cluster environment + description: Environment of the cluster + + cluster_id: + type: string + label: Cluster ID + description: Identifier of the cluster + + type: + type: string + label: Type + description: Type master or node + + subtype: + type: string + label: Sub-type + description: Sub-type compute or infra for nodes, default otherwise + default: default + + key_name: + type: string + label: Key name + description: Key name of keypair + + image: + type: string + label: Image + description: Name of the image + + flavor: + type: string + label: Flavor + description: Name of the flavor + + net: + type: string + label: Net ID + description: Net resource + + net_name: + type: string + label: Net name + description: Net name + + subnet: + type: string + label: Subnet ID + description: Subnet resource + + secgrp: + type: comma_delimited_list + label: Security groups + description: Security group resources + + availability_zone: + type: string + description: The Availability Zone to launch the instance. + default: nova + + volume_size: + type: number + description: Size of the volume to be created. + default: 1 + constraints: + - range: { min: 1, max: 1024 } + description: must be between 1 and 1024 Gb. + + node_labels: + type: json + description: OpenShift Node Labels + default: {"region": "default" } + +outputs: + + name: + description: Name of the server + value: { get_attr: [ server_nofloating, name ] } + + private_ip: + description: Private IP of the server + value: + get_attr: + - server_nofloating + - addresses + - { get_param: net_name } + - 0 + - addr + +resources: + + server_nofloating: + type: OS::Nova::Server + properties: + name: { get_param: name } + key_name: { get_param: key_name } + image: { get_param: image } + flavor: { get_param: flavor } + networks: + - port: { get_resource: port } + user_data: + get_file: user-data + user_data_format: RAW + metadata: + group: { get_param: group } + environment: { get_param: cluster_env } + clusterid: { get_param: cluster_id } + host-type: { get_param: type } + sub-host-type: { get_param: subtype } + node_labels: { get_param: node_labels } + + port: + type: OS::Neutron::Port + properties: + network: { get_param: net } + fixed_ips: + - subnet: { get_param: subnet } + security_groups: { get_param: secgrp } + + cinder_volume: + type: OS::Cinder::Volume + properties: + size: { get_param: volume_size } + availability_zone: { get_param: availability_zone } + + volume_attachment: + type: OS::Cinder::VolumeAttachment + properties: + volume_id: { get_resource: cinder_volume } + instance_uuid: { get_resource: server_nofloating } + mountpoint: /dev/sdb diff --git a/roles/static_inventory/tasks/openstack.yml b/roles/static_inventory/tasks/openstack.yml index 95d0d172f..499adf08c 100644 --- a/roles/static_inventory/tasks/openstack.yml +++ b/roles/static_inventory/tasks/openstack.yml @@ -23,11 +23,9 @@ q2: "[] | [?metadata.clusterid=='{{stack_name}}'] | [?public_v4!='']" when: - refresh_inventory|bool - - use_bastion|bool - name: Add cluster nodes w/o floating IPs to inventory - with_items: "{{ registered_nodes }}" - when: not item in registered_nodes_floating + with_items: "{{ registered_nodes|difference(registered_nodes_floating) }}" add_host: name: '{{ item.name }}' groups: '{{ item.metadata.group }}' @@ -40,11 +38,10 @@ - name: Add cluster nodes with floating IPs to inventory with_items: "{{ registered_nodes_floating }}" - when: item in registered_nodes_floating add_host: name: '{{ item.name }}' groups: '{{ item.metadata.group }}' - ansible_host: "{% if use_bastion|bool %}{{ item.name }}{% else %}{{ item.private_v4 }}{% endif %}" + ansible_host: "{% if use_bastion|bool %}{{ item.name }}{% else %}{{ item.public_v4 }}{% endif %}" ansible_fqdn: '{{ item.name }}' ansible_user: '{{ ssh_user }}' ansible_private_key_file: '{{ private_ssh_key }}' diff --git a/roles/static_inventory/templates/inventory.j2 b/roles/static_inventory/templates/inventory.j2 index ac74db35c..24dc9d4a8 100644 --- a/roles/static_inventory/templates/inventory.j2 +++ b/roles/static_inventory/templates/inventory.j2 @@ -14,9 +14,8 @@ %} ansible_user={{ hostvars[host]['ansible_user'] }}{% endif %} {% if 'ansible_private_key_file' in hostvars[host] %} ansible_private_key_file={{ hostvars[host]['ansible_private_key_file'] }}{% endif %} -{% if 'ansible_ssh_extra_args' in hostvars[host] -%} ansible_ssh_extra_args={{ hostvars[host]['ansible_ssh_extra_args']|quote }}{% endif %} - openshift_hostname={{ host }} +{% if use_bastion|bool and 'ansible_ssh_extra_args' in hostvars[host] +%} ansible_ssh_extra_args={{ hostvars[host]['ansible_ssh_extra_args']|quote }}{% endif %} openshift_hostname={{ host }} {% endif %} {% endfor %} -- cgit v1.2.3