Table of Contents

This document explains about how to build RDKB containerization image and use it. In addition it also has some useful commands which can be used to handle the containers

Procedure to create new container with Build steps

The code is developed and changes made in necessary files for containerization.

Below are the list of steps that needs to performed for creating a container for any component or application

Code Sync /Download

To download code, following commands are needed to be executed

Creation of XML file
Include XML file in container generator recipe - lxc-container-generator-native.bbappend
Providing File permission for the containers
Allowing D-Bus socket to access the containers (Specific to RDK-B Architecture)
Building the lxc image
Flashing the container image

Code Sync/Download

To download code, following commands are needed to be executed

Code Block

language

Code Block

language	bash
title	Code sync

$ repo init -u https://code.rdkcentral.com/r/manifests -m rdkb-raspberrypi.xml -b morty
$ repo sync -j4 --no-clone-bundle -u <url> -m <manifest file> -b <branch>
$ repo sync -j4 --no-clone-bundle

#Container Branch 
$ repo init -u https://code.rdkcentral.com/r/manifests -b rdkb-container -m rdkb-container.xml
$ repo sync -j4 --no-clone-bundle

Creation of XML file

Create a *.xml file on the following path meta-cmf-raspberrypi/recipes-containers/lxc-container-generator/files/xml/*.xml

This xml file would describe the following parameters for an container generation

Launcher Name
Application Name with path
lxc config file creation
rootfs creation

Code Block

title	meta-cmf-raspberrypi/recipes-containers/lxc-container-generator/files/xml/lxc_conf_Psm.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<CONTAINER  SandboxName="CONTAINER_FOLDER_NAME">
    <LxcParams>
        <LauncherName>"LAUNCHER_SCRIPT_NAME"</LauncherName>
        <ExecName>"APPLICATION_NAME_WITH_PATH"</ExecName>
        <ExecParams>"COMMAND_LINE_ARGUMENTS"</ExecParams>
                <SystemdNotify create="yes">
                        <PidFile>"PID_FILE_WITH_PATH"</PidFile>
                </SystemdNotify>
        <StopFunction enable="true"></StopFunction>
    </LxcParams>
        <LxcConfig>
-        <UserName>"USER_NAME"</UserName>
        <GroupName>"GROUP_NAME"</GroupName> 
        <CGroupSettings>
            <DeviceCgroup>
                <DevicesDeny>a</DevicesDeny>
                <AllowDefaultDevices enable="yes"/>
            </DeviceCgroup>
        </CGroupSettings>
                <Environment>
                   <Variable>DBUS_SESSION_BUS_ADDRESS=unix:path=/var/run/dbus/system_bus_socket</Variable>
                </Environment>

        <Network type="none"></Network>
                <Dbus enable="true"></Dbus>
        <Rootfs create="yes">
            <MountPoints>
<!-- /bin -->
                <Entry type="file">
                    <Source>/bin/sh</Source>
                    <Destination>bin/sh</Destination>
                    <Options>ro,bind,nosuid,nodev</Options>
                </Entry>
              
<!-- /proc -->
                <Entry type="dir">
                    <Source>proc</Source>
                    <Destination>proc</Destination>
                    <FsType>proc</FsType>
                    <Options>defaults,noexec,nosuid,nodev,hidepid=2</Options>
                </Entry>

            </MountPoints>

            <LibsRoBindMounts>
                <Entry>ld</Entry>
                <Entry>libtr181</Entry>
                <Entry>libxml2</Entry>
                <Entry>libz</Entry>
                <Entry>libccsp_common</Entry>
            </LibsRoBindMounts>
        </Rootfs>
</LxcConfig>
</CONTAINER>

Code Block

language	xml
title	Example File: lxc_conf_Psm.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<CONTAINER  SandboxName="PSMSSP">
    <LxcParams>
        <LauncherName>PsmSsp</LauncherName>
        <ExecName>/usr/bin/PsmSsp</ExecName>
        <ExecParams>-subsys eRT.</ExecParams>
                <SystemdNotify create="yes">
                        <PidFile>/var/tmp/PsmSsp.pid</PidFile>
                </SystemdNotify>
        <StopFunction enable="true"></StopFunction>
    </LxcParams>
        <LxcConfig>
-        <UserName>psm</UserName>
        <GroupName>psm</GroupName> 
        <CGroupSettings>
            <DeviceCgroup>
                <DevicesDeny>a</DevicesDeny>
                <AllowDefaultDevices enable="yes"/>
            </DeviceCgroup>
        </CGroupSettings>
                <Environment>
                   <Variable>DBUS_SESSION_BUS_ADDRESS=unix:path=/var/run/dbus/system_bus_socket</Variable>
                </Environment>


        <Network type="none"></Network>
                <Dbus enable="true"></Dbus>
        <Rootfs create="yes">
            <MountPoints>
<!-- /bin -->
                <Entry type="file">
                    <Source>/bin/sh</Source>
                    <Destination>bin/sh</Destination>
                    <Options>ro,bind,nosuid,nodev</Options>
                </Entry>
                <Entry type="file">
                    <Source>/usr/bin/PsmSsp</Source>
                    <Destination>usr/bin/PsmSsp</Destination>
                    <Options>ro,bind,nosuid,nodev</Options>
                </Entry>

                <Entry type="file">
                    <Source>/bin/touch</Source>
                    <Destination>bin/touch</Destination>
                    <Options>ro,bind,nosuid,nodev</Options>
                </Entry>
                <Entry type="file">
  

<!--rdklogs-->
                <Entry type="dir">
                                        <Source>/rdklogs</Source>
                                        <Destination>rdklogs</Destination>
                                        <Options>rw,bind,noexec,nosuid</Options>
                 </Entry>

            </MountPoints>

            <LibsRoBindMounts>
                <Entry>ld</Entry>
                <Entry>libtr181</Entry>
                <Entry>libxml2</Entry>
                <Entry>libz</Entry>
                <Entry>libccsp_common</Entry>
                <Entry>libsyscfg</Entry>
                <Entry>libsysevent</Entry>
				 ...
                <Entry>liblzma</Entry>
                <Entry>libdl</Entry>
                <Entry>libtinfo</Entry>
            
            </LibsRoBindMounts>
        </Rootfs>
</LxcConfig>
</CONTAINER>

Include XML file in container generator recipe - lxc-container-generator-native.bbappend

Include the lxc_conf_<NAME>.xml file on the bb file meta-cmf-raspberrypi/recipes-containers/lxc-container-generator/lxc-container-generator-native.bbappend

Code Block

title	Adding XML into recipie

#For example, Adding lxc_conf_Psm.xml to the recipie

SRC_URI_append = "${@bb.utils.contains('DISTRO_FEATURES', 'lxc-secure-containers-br', ' file://xml/lxc_conf_Psm.xml ', '', d)}"

do_install_append () {
    ${@bb.utils.contains('DISTRO_FEATURES', 'lxc-secure-containers-br', ' install_lxc_config secure lxc_conf_Psm.xml ', '', d)}
}

Providing File permission for the containers

Provide user permission for the new container to run as unprivileged , in meta-cmf-raspberrypi/recipes-core/images/add-users-groups-file-owners-and-permissions-broadband.inc

Following changes need to be added, new container which will create userid and groupid for container about to create with necessary permission

Code Block

title	Adding user and permission

EXTRA_USERS_PARAMS += "\
    useradd -u <uid> -G dbusgrp                            -r -s /bin/false <container_user_name>           ; \

   ROOTFS_CHOWN_SETCAP += " -o <container_user_name>:<container_group_name> -m o-rwx /usr/bin/application_name     \n"     

---------------------------------------------------------------------------------------------------------------------
#Adding PSM permission

 EXTRA_USERS_PARAMS += "\
    useradd -u 703 -G dbusgrp                            -r -s /bin/false psm           ; \

   ROOTFS_CHOWN_SETCAP += " -o psm:psm -m o-rwx /usr/bin/PsmSsp     \n"

Allowing D-Bus socket to access the containers (Specific to RDK-B Architecture)

Dbus socket should allow the newly created conatiner to access system bus, to do so ,we need to add the conatiner user name to system.conf

Code Block

title	Adding user and permission

#Add the new user name in below line ,

sed -i '/allow user/c\<deny user="*"/>\n<allow user="ccspcr"/>\n<allow user="psm"/>\n<allow user="pandm"/>\n<allow user="ccspwifi"/>\n<allow user="USER_NAME"/>\n<allow user="ccsplmlite"/>\n<allow user="root"/>' ${D}/usr/share/dbus-1/system.conf

Building the lxc image

Compile/build

Go to the <workspace>

...

raspberrypi-rdk-broadband-lxcrdk-generic-broadband-lxc-image_default_20190327101556.rootfs.rpi-sdimg

Flashing the container image

Command to flash the image

...

5530	root	/usr/bin/lxc-execute -n PSMSSP -f /container/PSMSSP/conf/lxc.conf -- /usr/bin/PsmSsp -subsys eRT .
5534	psm	/init.lxc.static –gid 705 –uid 705 -- /usr/bin/PsmSsp -subsys eRT .
6433	root	/usr/bin/lxc-execute -n CCSPPANDM -f /container/CCSPPANDM/conf/lxc.conf -- /usr/bin/gw_prov_utopia
6435	pandm	/init.lxc.static –gid 706 –uid 706 -- /usr/bin/gw_prov_utopia
6520	root	/usr/bin/lxc-execute -n DBUS -f /container/DBUS/conf/lxc.conf -- /usr/bin/dbus-daemon –system –nofork –nopidfile –systemd-activation
6532	dbus	/init.lxc.static –gid 703 –uid 703 -- /usr/bin/dbus-daemon –system –nofork –nopidfile –systemd-activation
6574	root	/usr/bin/lxc-execute -n CCSPCR -f /container/CCSPCR/conf/lxc.conf -- /usr/bin/CcspCrSsp -subsys eRT .
6577	ccspcr	/init.lxc.static –gid 704 –uid 704 -- /usr/bin/CcspCrSsp -subsys eRT .
6737	root	grep lxc

WiFi Container :: Manual Start

Due to some limitations in invoking wifi driver with container permission, ccspwifi container has to be run manually in latest environment with below procedure

...

1. Run respective container scripts to execute individual container when container fails in boot up process:

Code Block

language	bash

$ sh /container/<Container Name>/launcher/<container.sh> start

...

RDK Resources

[RDK Preferred]

Code Management Facility

RDK Forums

[RDK Conferences]

RDK Support

Archives

In the News!

Versions Compared

Old Version 12

New Version Current

Key

Procedure to create new container with Build steps

Code Sync/Download

Creation of XML file

Include XML file in container generator recipe - lxc-container-generator-native.bbappend

Providing File permission for the containers

Allowing D-Bus socket to access the containers (Specific to RDK-B Architecture)

Building the lxc image

Compile/build

Flashing the container image

Command to flash the image

WiFi Container :: Manual Start

RDK Resources

[*RDK Preferred*]

Code Management Facility

RDK Forums

[RDK Conferences]

RDK Support

Archives

In the News!

Page History

Versions Compared

Old Version 12

New Version Current

Key

Procedure to create new container with Build steps

Code Sync/Download

Creation of XML file

Include XML file in container generator recipe - lxc-container-generator-native.bbappend

Providing File permission for the containers

Allowing D-Bus socket to access the containers (Specific to RDK-B Architecture)

Building the lxc image

Compile/build

Flashing the container image

Command to flash the image

WiFi Container :: Manual Start

[RDK Preferred]