kata-footloose$ docker info | grep runtime
WARNING: No swap limit support
Runtimes: kata-runtime runc
Default Runtime: kata-runtime
kata-footloose$ footloose show
NAME HOSTNAME PORTS IP IMAGE CMD STATE
cluster-fedora0 fedora0 22->32768 172.17.0.2 quay.io/footloose/fedora29:latest /sbin/init Running
cluster-centos0 centos0 22->32769 172.17.0.3 quay.io/footloose/centos7:latest /sbin/init Running
cluster-xenial0 xenial0 22->32770 172.17.0.4 quay.io/footloose/ubuntu16.04:latest /sbin/init Running
cluster-bionic0 bionic0 22->32771 172.17.0.5 quay.io/footloose/ubuntu18.04:latest /sbin/init Running
cluster-amzlinux0 amzlinux0 22->32772 172.17.0.6 quay.io/footloose/amazonlinux2:latest /sbin/init Running
cluster-debian10-0 debian10-0 22->32773 172.17.0.7 quay.io/footloose/debian10:latest /sbin/init Running
kata-footloose$ sudo kata-runtime list
ID PID STATUS BUNDLE CREATED OWNER
fb7b8a61829797cf4d18d319cc338cc720b1f07ea78b20023553d82dba2705c1 3250 running /run/docker/containerd/daemon/io.containerd.runtime.v1.linux/moby/fb7b8a61829797cf4d18d319cc338cc720b1f07ea78b20023553d82dba2705c1 2019-04-08T17:55:30.243632522Z #0
c258e3ff6a3218f0fb376f8958ce556487eefe0cc9adfe48cb131536fc1e1683 2587 running /run/docker/containerd/daemon/io.containerd.runtime.v1.linux/moby/c258e3ff6a3218f0fb376f8958ce556487eefe0cc9adfe48cb131536fc1e1683 2019-04-08T17:55:12.195596992Z #0
04328c36f20ebf6abc38f0c9a9e7e127a17d735b23ace68b0237c87c533cb5e1 2245 running /run/docker/containerd/daemon/io.containerd.runtime.v1.linux/moby/04328c36f20ebf6abc38f0c9a9e7e127a17d735b23ace68b0237c87c533cb5e1 2019-04-08T17:55:03.670328644Z #0
6ea1b79b215c710c4ffb9038e1b56f1e1b1690064522c63f96aef9bfe9ba790f 3593 running /run/docker/containerd/daemon/io.containerd.runtime.v1.linux/moby/6ea1b79b215c710c4ffb9038e1b56f1e1b1690064522c63f96aef9bfe9ba790f 2019-04-08T17:55:38.133325806Z #0
cd913c7dee9fe4d524e665196cd0454648d8d7e5d51808692db2d1f799683976 3919 running /run/docker/containerd/daemon/io.containerd.runtime.v1.linux/moby/cd913c7dee9fe4d524e665196cd0454648d8d7e5d51808692db2d1f799683976 2019-04-08T17:55:47.393391689Z #0
3ba215c774eec6ee7592b72993447eb3116d5f800556dc15aee69314645daeed 2920 running /run/docker/containerd/daemon/io.containerd.runtime.v1.linux/moby/3ba215c774eec6ee7592b72993447eb3116d5f800556dc15aee69314645daeed 2019-04-08T17:55:21.186334535Z #0
kata-footloose$ footloose ssh root@centos0
System is booting up. See pam_nologin(8)
[root@centos0 ~]# uname -r
4.19.28-22.container
[root@centos0 ~]# exit
logout
Connection to localhost closed.
kata-footloose$ uname -r
4.15.0-47-generic
kata-footloose$
Created
April 8, 2019 18:15
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kata with footloose machine containers
Footloose as a Kubernetes POD. So a VM in Kubernetes launched and managed as a container using the Kata runtimeClass.
apiVersion: v1
kind: Pod
metadata:
name: footfed
spec:
runtimeClassName: kata
volumes:
- name: runv
emptyDir:
medium: "Memory"
- name: runlockv
emptyDir:
medium: "Memory"
- name: tmpv
emptyDir:
medium: "Memory"
- name: fakecgroup
hostPath:
path: /sys/fs/cgroup
containers:
- name: footfed
image: quay.io/footloose/fedora29:latest
command: ["/sbin/init"]
volumeMounts:
- name: runv
mountPath: /run
- name: runlockv
mountPath: /run/lock
- name: tmpv
mountPath: /tmp
- name: fakecgroup
readOnly: true
mountPath: /sys/fs/cgroup
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At the lowest level if you want to do this without footloose