Newton Series Release Notes¶
14.0.0¶
New Features¶
LXC containers will now have a proper RFC1034/5 hostname set during post build tasks. A localhost entry for 127.0.1.1 will be created by converting all of the “_” in the
inventory_hostname
to “-”. Containers will be created with a default domain of openstack.local. This domain name can be customized to meet your deployment needs by setting the optionlxc_container_domain
.
A new variable has been added to allow a deployer to control the restart of containers via the handler. This new option is
lxc_container_allow_restarts
and has a default ofyes
. If a deployer wishes to disable the auto-restart functionality they can set this value tono
and automatic container restarts that are not absolutely required will be disabled.
The
lxc-container-create
role now consumes the variablelxc_container_bind_mounts
which should contain a list of bind mounts to apply to a newly created container. The appropriate host and container directory will be created and the configuration applied to the container config. This feature is designed to be used in group_vars to ensure that containers are fully prepared at the time they are created, thus cutting down the number of times containers are restarted during deployments and upgrades.
The
lxc-container-create
role now consumes the variablelxc_container_config_list
which should contain a list of the entries which should be added to the LXC container config file when the container is created. This feature is designed to be used in group_vars to ensure that containers are fully prepared at the time they are created, thus cutting down the number of times containers are restarted during deployments and upgrades.
The
lxc-container-create
role now consumes the variablelxc_container_commands
which should contain any shell commands that should be executed in a newly created container. This feature is designed to be used in group_vars to ensure that containers are fully prepared at the time they are created, thus cutting down the number of times containers are restarted during deployments and upgrades.
The container creation process now allows
copy-on-write
to be set as thelxc_container_backing_method
when thelxc_container_backing_store
is set tolvm
. When this is set it will use a snapshot of the base container to build the containers.
The container creation process now allows
overlayfs
to be set as thelxc_container_backing_store
. When this is set it will use a snapshot of the base container to build the containers. Theoverlayfs
backing store is not recommended to be used for production unless the host kernel version is 3.18 or higher.
LXC containers will now generate a fixed mac address on all network interfaces when the option lxc_container_fixed_mac is set to true. This feature was implemented to resolve issues with dynamic mac addresses in containers generally experienced at scale with network intensive services.
The
lxc_container_create
role will now build a container based on the distro of the host OS.
The
lxc_container_create
role now supports Ubuntu 14.04, 16.04, and RHEL/CentOS 7
The LXC container creation process now has a configurable delay for the task which waits for the container to start. The variable
lxc_container_ssh_delay
can be set to change the default delay of five seconds.
The LXC container creation and modification process now supports online network additions. This ensures a container remains online when additional networks are added to a system.
Support added to allow deploying on ppc64le architecture using the Ubuntu distributions.
Upgrade Notes¶
LXC containers will now have a proper RFC1034/5 hostname set during post build tasks. A localhost entry for 127.0.1.1 will be created by converting all of the “_” in the
inventory_hostname
to “-”. Containers will be created with a default domain of openstack.local. This domain name can be customized to meet your deployment needs by setting the optionlxc_container_domain
.
The
lxc_container_create
role no longer uses the distro specific lxc container create template.
The following variable changes have been made in the
lxc_host
role:lxc_container_template: Removed because the template option is now contained within the operating system specific variable file loaded at runtime.
lxc_container_template_options: This option was renamed to lxc_container_download_template_options. The deprecation filter was not used because the values provided from this option have been fundamentally changed and old overrides will cause problems.
lxc_container_release: Removed because image is now tied with the host operating system.
lxc_container_user_name: Removed because the default users are no longer created when the cached image is created.
lxc_container_user_password: Removed because the default users are no longer created when the cached image is created.
lxc_container_template_main_apt_repo: Removed because this option is now being set within the cache creation process and is no longer needed here.
lxc_container_template_security_apt_repo: Removed because this option is now being set within the cache creation process and is no longer needed here.
Bug Fixes¶
LXC containers will now have the ability to use a fixed mac address on all network interfaces when the option lxc_container_fixed_mac is set true. This change will assist in resolving a long standing issue where network intensive services, such as neutron and rabbitmq, can enter a confused state for long periods of time and require rolling restarts or internal system resets to recover.