Change-Id: Icf3f01516185afb7b9f642407b06a0204c36ecbe
Closes-Bug: #1840315
Signed-off-by: Radosław Piliszek <radoslaw.piliszek@gmail.com>
(cherry picked from commit 44f88d16ac
)
3.2 KiB
Zun - Container service
"Zun is an OpenStack Container service. It aims to provide an OpenStack API for provisioning and managing containerized workload on OpenStack." For more details about Zun, see OpenStack Zun Documentation.
Preparation and Deployment
By default Zun and its dependencies are disabled. In order to enable Zun, you need to edit globals.yml and set the following variables:
enable_zun: "yes"
enable_kuryr: "yes"
enable_etcd: "yes"
docker_configure_for_zun: "yes"
Docker reconfiguration requires reboostrapping before deploy. Make
sure you understand the consequences of restarting Docker. Please see
rebootstrapping
for
details. If it's initial deploy, then there is nothing to worry about
because it's initial bootstrapping as well and there are no running
services to affect.
$ kolla-ansible bootstrap-servers
Finally deploy:
$ kolla-ansible deploy
Verification
Generate the credentials file:
$ kolla-ansible post-deploy
Source credentials file:
$ . /etc/kolla/admin-openrc.sh
Download and create a glance container image:
$ docker pull cirros $ docker save cirros | openstack image create cirros --public \ --container-format docker --disk-format raw
Create zun container:
$ zun create --name test --net network=demo-net cirros ping -c4 8.8.8.8
Note
Kuryr does not support networks with DHCP enabled, disable DHCP in the subnet used for zun containers.
$ openstack subnet set --no-dhcp <subnet>
Verify container is created:
$ zun list +--------------------------------------+------+---------------+---------+------------+------------+-------+ | uuid | name | image | status | task_state | addresses | ports | +--------------------------------------+------+---------------+---------+------------+------------+-------+ | 3719a73e-5f86-47e1-bc5f-f4074fc749f2 | test | cirros | Created | None | 172.17.0.3 | [] | +--------------------------------------+------+---------------+---------+------------+------------+-------+
Start container:
$ zun start test Request to start container test has been accepted.
Verify container:
$ zun logs test PING 8.8.8.8 (8.8.8.8): 56 data bytes 64 bytes from 8.8.8.8: seq=0 ttl=45 time=96.396 ms 64 bytes from 8.8.8.8: seq=1 ttl=45 time=96.504 ms 64 bytes from 8.8.8.8: seq=2 ttl=45 time=96.721 ms 64 bytes from 8.8.8.8: seq=3 ttl=45 time=95.884 ms --- 8.8.8.8 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 95.884/96.376/96.721 ms
For more information about how zun works, see zun, OpenStack Container service.