Shu Shen de2dc69641 Configurable lxc cache and rootfs path
The rootfs of the containers use large disk space and is defaulted to
/var/lib/lxc. It's desirable to configure an alternative rootfs directory on a
partition with large enough free space to hold the rootfs.

The rootfs of a container is hard-linked to the lxc cache when created by lxc
templates. Therefore both have to reside on the same partition and the lxc
cache shall be configurable as well as the rootfs directory.

The lxc-ubuntu template is patched by lxc-host role to use the configured lxc
cache folder. This patch should be removed once the updated upstream lxc with
support of configuring the cache path goes mainstream.

To confgiure these parameters, set the following variables in global_overrides
of openstack_user_config.yml:
    - lxc_container_directory, defaults to /var/lib/lxc
    - lxc_container_cache_path, defaults to /var/cache/lxc

Closes-Bug: #1463905
Change-Id: I9ccf0c45e0a1875644750e0d70ce613265040176
2015-06-15 20:56:13 +00:00

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# Copyright 2014, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# lxc container rootfs directory and cache path
lxc_container_directory: "/var/lib/lxc"
lxc_container_cache_path: "/var/cache/lxc"
# lxc container net network
lxc_net_bridge: lxcbr0
lxc_net_bridge_port: none
lxc_net_address: 10.0.3.1
lxc_net_netmask: 255.255.255.0
lxc_net_gateway: none ## if "none" no gateway will on the LXC bridge, nat must be "false" to use a gateway.
# lxc container nat enabled
lxc_net_nat: true ## If "true" nat rules will be created with the lxc network.
# lxc container dhcp settings
lxc_net_dhcp_range: 10.0.3.2,10.0.3.253
lxc_net_dhcp_max: 253
lxc_net_dhcp_config: ''
lxc_net_dnsmasq_user: lxc-dnsmasq
lxc_net_domain: ''
# lxc_container_net_link variable should be set to the lxc-net bridge.
lxc_container_net_link: "{{ lxc_net_bridge }}" ## name of the host bridge to attach to
lxc_container_net_type: veth ## lxc network interface type (veth, phys, vlan, macvlan, empty)
lxc_container_net_name: eth0 ## name of the interface inside the container.
# System control kernel tuning
lxc_kernel_options:
- { key: 'fs.inotify.max_user_instances', value: 1024 }
- { key: 'vm.swappiness', value: 10 }
lxc_container_template_main_apt_repo: "https://mirror.rackspace.com/ubuntu"
lxc_container_template_security_apt_repo: "https://mirror.rackspace.com/ubuntu"
# Required apt packages.
lxc_apt_packages:
- apparmor-utils
- bridge-utils
- cgmanager
- cgroup-lite
- debootstrap
- dnsmasq
- git
- liblxc1
- lxc
- lxc-dev
- lxc-templates
- python-dev
- python3-lxc
# Prebuilt images to deploy onto hosts for use in containers.
# lxc_container_caches:
# - url: "{{ openstack_upstream_url }}/container_images/rpc-trusty-container.tgz"
# name: "trusty.tgz"