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![]() This is a reissue of two previous patches along with some additional changes for hardening the root password process based on discussions on-list. -- This patch modifies the lxc-fedora and lxc-centos templates for 3 things. 1) Extensively modifies root password generation, storage, and management based on discussions on the devel list. Root passwords are hardened and have advanced configurability. A static password may be provided. A password based on a template may be generated, including ${RANDOM}. A password may be generated through mktmp using a template with X's. Root passwords default to expired, initially. Passwords may optionally be echoed to stdout at container creation. (no) Passwords may optionally be stored in ${rootfs_path}/tmp_root_pass. (yes) Users may be optionally forced to change the password at creation time. (no) Default is to generate a pattern based password and store, no force change. All of this may be overridden by environment variables through conditional assignment. 2) Random static hardware addresses are generated for all configured interfaces. 3) Add code to create sysv init style scripts to intercept shutdown and reboot to prevent init restart and hang for CentOS and legacy Fedora systems on shutdown, reboot, init 0, and init 6. This solves a variety of hang conditions but only affects newly created containers. Does not have any impact on systemd based containers. Signed-off-by: Michael H. Warfield <mhw@WittsEnd.com> Acked-by: Stéphane Graber <stgraber@ubuntu.com> |
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config | ||
doc | ||
hooks | ||
src | ||
templates | ||
.gitignore | ||
.travis.yml | ||
AUTHORS | ||
autogen.sh | ||
configure.ac | ||
CONTRIBUTING | ||
COPYING | ||
INSTALL | ||
lxc.pc.in | ||
lxc.spec.in | ||
MAINTAINERS | ||
Makefile.am | ||
NEWS | ||
README | ||
runapitests.sh | ||
TODO |
Please see the COPYING file for details on copying and usage. Please refer to the INSTALL file for instructions on how to build. What is lxc: The container technology is actively being pushed into the mainstream linux kernel. It provides the resource management through the control groups aka process containers and resource isolation through the namespaces. The linux containers, lxc, aims to use these new functionalities to pro- vide an userspace container object which provides full resource isolation and resource control for an applications or a system. The first objective of this project is to make the life easier for the ker- nel developers involved in the containers project and especially to con- tinue working on the Checkpoint/Restart new features. The lxc is small enough to easily manage a container with simple command lines and complete enough to be used for other purposes. Using lxc: Refer the lxc* man pages (generated from doc/* files) Downloading the current source code: Source for the latest released version can always be downloaded from http://linuxcontainers.org/downloads/ You can browse the up to the minute source code and change history online. http://github.com/lxc/lxc For detailed build instruction refer to INSTALL and man lxc man page but a short command line should work: ./autogen.sh && ./configure && make && sudo make install preceded by ./autogen.sh if configure do not exist yet. Troubleshooting: If the ./autogen.sh script shows the following message: "aclocal: not found", you are likely missing the "automake" package. Make sure it's installed and try again. If the ./configure script gives you the following message: "configure: error: Please install the libcap development files." you are likely missing the "libcap-dev" package. The configure script will usually give you hints as to what you are missing, looking for those in your package manager will usually give you the package that you need to install. Getting help: when you find you need help, you can check out one of the two lxc mailing list archives and register if interested: http://lists.linuxcontainers.org/listinfo/lxc-devel http://lists.linuxcontainers.org/listinfo/lxc-users Portability: lxc is still in development, so the command syntax and the API can change. The version 1.0.0 will be the frozen version. lxc is developed and tested on Linux since kernel mainline version 2.6.27 (without network) and 2.6.29 with network isolation. It's compiled with gcc, and should work on most architectures as long as the required kernel features are available. This includes (but isn't limited to): i686, x86_64, ppc, ppc64, S390, armel and armhf. AUTHOR Daniel Lezcano <daniel.lezcano@free.fr> Seccomp with LXC ---------------- To restrict a container with seccomp, you must specify a profile which is basically a whitelist of system calls it may execute. In the container config file, add a line like lxc.seccomp = /var/lib/lxc/q1/seccomp.full I created a usable (but basically worthless) seccomp.full file using cat > seccomp.full << EOF 1 whitelist EOF for i in `seq 0 300`; do echo $i >> seccomp.full done for i in `seq 1024 1079`; do echo $i >> seccomp.full done -- Serge Hallyn <serge.hallyn@ubuntu.com> Fri, 27 Jul 2012 15:47:02 +0600