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agent: support systemd cgroup for kata agent

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1. Implemented a rust module for operating cgroups through systemd with the help of zbus (src/agent/rustjail/src/cgroups/systemd).
2. Add support for optional cgroup configuration through fs and systemd at agent (src/agent/rustjail/src/container.rs).
3. Described the usage and supported properties of the agent systemd cgroup (docs/design/agent-systemd-cgroup.md).

Fixes: #4336

Signed-off-by: Yuan-Zhuo <yuanzhuo0118@outlook.com>
This commit is contained in:
Yuan-Zhuo
2022-10-25 13:57:09 +08:00
parent a151d8ee50
commit d7bb4b5512
31 changed files with 4546 additions and 148 deletions
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2
tools/osbuilder/rootfs-builder/ubuntu/config.sh
View File

@@ -5,7 +5,7 @@
OS_NAME=ubuntu
# This should be Ubuntu's code name, e.g. "focal" (Focal Fossa) for 20.04
OS_VERSION=${OS_VERSION:-focal}
PACKAGES="chrony iptables"
PACKAGES="chrony iptables dbus"
[ "$AGENT_INIT" = no ] && PACKAGES+=" init"
[ "$SECCOMP" = yes ] && PACKAGES+=" libseccomp2"
REPO_URL=http://ports.ubuntu.com

10
tools/osbuilder/rootfs-builder/ubuntu/rootfs_lib.sh
View File

@@ -2,6 +2,12 @@
#
# SPDX-License-Identifier: Apache-2.0
build_dbus() {
local rootfs_dir=$1
ln -sf /lib/systemd/system/dbus.service $rootfs_dir/etc/systemd/system/dbus.service
ln -sf /lib/systemd/system/dbus.socket $rootfs_dir/etc/systemd/system/dbus.socket
}
build_rootfs() {
local rootfs_dir=$1
local multistrap_conf=multistrap.conf
@@ -19,7 +25,9 @@ keyring=ubuntu-keyring
suite=focal
packages=$PACKAGES $EXTRA_PKGS
EOF
multistrap -a "$DEB_ARCH" -d "$rootfs_dir" -f "$multistrap_conf"
if ! multistrap -a "$DEB_ARCH" -d "$rootfs_dir" -f "$multistrap_conf"; then
build_dbus $rootfs_dir
fi
rm -rf "$rootfs_dir/var/run"
ln -s /run "$rootfs_dir/var/run"
cp --remove-destination /etc/resolv.conf "$rootfs_dir/etc"