diff options
Diffstat (limited to '')
| -rwxr-xr-x | lib/container/enter | 97 | ||||
| -rw-r--r-- | share/man/container-enter.1.txt | 75 | ||||
| -rw-r--r-- | share/man/container-tools.7.txt | 3 | ||||
| -rw-r--r-- | share/man/container.1.txt | 3 |
4 files changed, 178 insertions, 0 deletions
diff --git a/lib/container/enter b/lib/container/enter new file mode 100755 index 0000000..0de88da --- /dev/null +++ b/lib/container/enter @@ -0,0 +1,97 @@ +#!/bin/sh + +# container-tools - Manage systemd-nspawn containers +# Copyright (C) 2014-2016 Daniel Baumann <daniel.baumann@open-infrastructure.net> +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +set -e + +COMMAND="$(basename ${0})" + +MACHINES="/var/lib/machines" + +Parameters () +{ + LONG_OPTIONS="name:," + + OPTIONS="n:" + + PARAMETERS="$(getopt --longoptions ${LONG_OPTIONS} --name=${COMMAND} --options ${OPTIONS} --shell sh -- ${@})" + + if [ "${?}" != "0" ] + then + echo "'${COMMAND}': getopt exit" >&2 + exit 1 + fi + + eval set -- "${PARAMETERS}" + + while true + do + case "${1}" in + -n|--name) + NAME="${2}" + shift 2 + ;; + + --) + shift 1 + break + ;; + + *) + echo "'${COMMAND}': getopt error" >&2 + exit 1 + ;; + esac + done +} + +Usage () +{ + echo "Usage: container ${COMMAND} -n|--name NAME [-- COMMAND|\"COMMANDS\"]" >&2 + exit 1 +} + +Parameters "${@}" + +if [ -z "${NAME}" ] +then + Usage +fi + +if [ ! -e "${MACHINES}/${NAME}" ] +then + echo "'${NAME}': no such container" >&2 + exit 1 +fi + +STATE="$(machinectl show ${NAME} 2>&1 | awk -F= '/^State=/ { print $2 }')" + +case "${STATE}" in + running) + ;; + + *) + echo "'${NAME}': container is not running" >&2 + exit 1 + ;; +esac + +LEADER="$(machinectl status ${NAME} | awk '/Leader: / { print $2 }')" +COMMANDS="$(echo ${@} | sed -e 's|.*-- ||')" + +# Run +nsenter --target ${LEADER} --mount --uts --ipc --net --pid --root --wd=/root ${COMMANDS} diff --git a/share/man/container-enter.1.txt b/share/man/container-enter.1.txt new file mode 100644 index 0000000..2c93e8d --- /dev/null +++ b/share/man/container-enter.1.txt @@ -0,0 +1,75 @@ +// container-tools - Manage systemd-nspawn containers +// Copyright (C) 2014-2016 Daniel Baumann <daniel.baumann@open-infrastructure.net> +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. + +CONTAINER-CONSOLE(1) +==================== +:doctype: manpage +:man manual: Open Infrastructure +:man source: container-tools +:man version: {revnumber} + + +NAME +---- +container-enter - Enter a container namespace + + +SYNOPSIS +-------- +*container enter* ['OPTIONS'] [-- COMMAND|"COMMANDS"] + + +DESCRIPTION +----------- +The container enter enters a container namespace. + + +OPTIONS +------- +The following container options are available: + +*-n, --name='NAME'*:: + Specify container name. + + +EXAMPLES +-------- +*Enter to example.net container namespace:*:: + sudo container enter -n example.net + +*Execute 'ip a' in example.net container namespace:*:: + sudo container enter -n example.net -- 'ip a' + + +SEE ALSO +-------- +container-tools(7), +container(1). + + +HOMEPAGE +-------- +More information about container-tools and the Open Infrastructure project can be found on the homepage at https://open-infrastructure.net. + + +BUGS +---- +Bugs can be reported by opening an issue in the GitHub repository at https://github.com/open-infrastructure/container-tools. + + +AUTHORS +------- +container-tools was written by Daniel Baumann <daniel.baumann@open-infrastructure.net>. diff --git a/share/man/container-tools.7.txt b/share/man/container-tools.7.txt index 95d09c8..cdadbb4 100644 --- a/share/man/container-tools.7.txt +++ b/share/man/container-tools.7.txt @@ -93,6 +93,9 @@ USAGE *Attach console to a container:*:: sudo container console -n NAME +*Enter a container namespace:*:: + sudo container enter -n NAME + *limit*:: sudo container limit -n NAME --cpu-quota 10% diff --git a/share/man/container.1.txt b/share/man/container.1.txt index 7ad4f87..6fac812 100644 --- a/share/man/container.1.txt +++ b/share/man/container.1.txt @@ -67,6 +67,9 @@ The following container commands are available: *console*:: Attach console to a container, see container-console(1). +*enter*:: + Enter a container namespace, see container-enter(1). + *limit*:: Limit ressources of a container, see container-limit(1). |