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upgrade lxc-helpers
This commit is contained in:
Earl Warren
parent
75cc10f9ca
commit
00a4cd9916
2 changed files with 77 additions and 21 deletions
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@ -7,6 +7,9 @@ LXC_SELF_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
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LXC_BIN=/usr/local/bin
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LXC_CONTAINER_CONFIG_ALL="unprivileged lxc libvirt docker k8s"
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LXC_CONTAINER_CONFIG_DEFAULT="lxc libvirt docker"
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LXC_IPV6_PREFIX_DEFAULT="fc15"
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LXC_DOCKER_PREFIX_DEFAULT="172.17"
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LXC_IPV6_DOCKER_PREFIX_DEFAULT="fd00:d0ca"
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: ${LXC_SUDO:=}
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: ${LXC_CONTAINER_RELEASE:=bookworm}
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@ -372,12 +375,14 @@ function lxc_apt_install_inside() {
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function lxc_install_lxc() {
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local name="$1"
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local prefix="$2"
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local prefixv6="$3"
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lxc_container_inside $name lxc_install_lxc_inside $prefix
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lxc_container_inside $name lxc_install_lxc_inside $prefix $prefixv6
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}
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function lxc_install_lxc_inside() {
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local prefix="$1"
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local prefixv6="${2:-$LXC_IPV6_PREFIX_DEFAULT}"
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local packages="make git libvirt0 libpam-cgfs bridge-utils uidmap dnsmasq-base dnsmasq dnsmasq-utils qemu-user-static lxc-templates debootstrap"
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if test "$(lxc_release)" = bookworm ; then
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@ -398,6 +403,10 @@ LXC_NETMASK="255.255.255.0"
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LXC_NETWORK="$prefix.0/24"
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LXC_DHCP_RANGE="$prefix.2,$prefix.254"
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LXC_DHCP_MAX="253"
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LXC_IPV6_ADDR="$prefixv6::216:3eff:fe00:1"
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LXC_IPV6_MASK="64"
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LXC_IPV6_NETWORK="$prefixv6::/64"
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LXC_IPV6_NAT="true"
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EOF
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systemctl start lxc-net
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fi
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@ -410,5 +419,16 @@ function lxc_install_docker() {
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}
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function lxc_install_docker_inside() {
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mkdir /etc/docker
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cat > /etc/docker/daemon.json <<EOF
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{
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"ipv6": true,
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"fixed-cidr-v6": "$LXC_IPV6_DOCKER_PREFIX_DEFAULT:1::/64",
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"default-address-pools": [
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{"base": "$LXC_DOCKER_PREFIX_DEFAULT.0.0/16", "size": 24},
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{"base": "$LXC_IPV6_DOCKER_PREFIX_DEFAULT:2::/104", "size": 112}
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]
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}
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EOF
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lxc_apt_install_inside docker.io docker-compose
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}
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@ -13,36 +13,37 @@ function verbose() {
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function help() {
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cat <<'EOF'
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lxc-helpers - LXC container management helpers
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lxc-helpers.sh - LXC container management helpers
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SYNOPSIS
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lxc-helpers [-v|--verbose] [-h|--help]
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lxc-helpers.sh [-v|--verbose] [-h|--help]
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[-o|--os {bookworm|bullseye} (default bookworm)]
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command [arguments]
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lxc-helpers.sh [-v|--verbose] [-h|--help]
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[-o|--os {bookworm|bullseye} (default bookworm)]
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[-c|--config {unprivileged lxc libvirt docker k8s} (default "lxc libvirt docker")]
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lxc_container_create [arguments]
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DESCRIPTION
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A thin shell based layer on top of LXC to create, populate, run and
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destroy LXC containers. A container is created from a copy of an
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existing container.
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The LXC network is configured to provide a NAT'ed IP address (IPv4
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and IPv6) to each container, in a configurable private range.
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CREATE AND DESTROY
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lxc_prepare_environment
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Install LXC dependencies.
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lxc_template_release
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lxc_container_create `name`
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Echo the name of the container for the Operating System
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specified with `--os`.
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lxc_build_template `existing_container` `new_container`
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Copy `existing_container` into `new_container`. If
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`existing_container` is equal to $(lxc_template_release) it
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will be created on demand.
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Create the `name` container.
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lxc_container_mount `name` `path`
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@ -55,25 +56,56 @@ CREATE AND DESTROY
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lxc_container_stop `name`
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Unmount all bind mounted directories and stop the `name`
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container.
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Stop the `name` container.
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lxc_container_destroy `name`
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Call lxc_container_stop `name` and destroy the container.
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lxc_template_release
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Echo the name of the container for the Operating System
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specified with `--os`.
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lxc_build_template `existing_container` `new_container`
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Copy `existing_container` into `new_container`. If
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`existing_container` is equal to $(lxc-helpers.sh lxc_template_release) it
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will be created on demand.
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CONFIGURATION
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The `--config` option provides preset configurations appended to the `/var/lib/lxc/name/config`
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file when the container is created with the `lxc_container_create` command. They are required
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to run the corresponding subsystem:
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* `docker` https://www.docker.com/
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* `lxc` https://linuxcontainers.org/lxc/
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* `libvirt` https://libvirt.org/
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* `k8s` https://kubernetes.io/
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* `unprivileged` none of the above
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Example: lxc-helpers.sh --config "docker libvirt" lxc_container_create mycontainer
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The `unprivileged` configuration does not add anything.
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ACTIONS IN THE CONTAINER
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For some command lxc_something `name` that can be called from outside the container
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there is an equivalent function lxc_something_inside that can be called from inside
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the container.
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lxc_install_lxc `name` `prefix`
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lxc_install_lxc_inside `prefix`
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lxc_install_lxc `name` `prefix` [`prefixv6`]
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lxc_install_lxc_inside `prefix` [`prefixv6`]
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Install LXC in the `name` container to allow the creation of
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named containers. `prefix` is a class C IP prefix from which
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containers will obtain their IP (for instance 10.40.50).
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containers will obtain their IP (for instance 10.40.50). `prefixv6`
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is an optional IPv6 private address prefix that defaults to fc15.
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lxc_container_run `name` command [options...]
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Run the `command` within the `name` container.
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lxc_container_run_script `name` `path`
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lxc_container_run_script_as `name` `user` `path`
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@ -89,13 +121,13 @@ ACTIONS IN THE CONTAINER
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granted to `user`. It is made a member of the groups docker, kvm
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and libvirt if they exist already. A SSH key is created.
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Example: lxc_container_user_install mycontainer $(id -u) $(USER)
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Example: lxc_container_user_install mycontainer $(id -u) $USER
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EOF
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}
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function main() {
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local options=$(getopt -o hvo --long help,verbose,os: -- "$@")
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local options=$(getopt -o hvoc --long help,verbose,os:,config: -- "$@")
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[ $? -eq 0 ] || {
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echo "Incorrect options provided"
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exit 1
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@ -113,6 +145,10 @@ function main() {
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LXC_CONTAINER_RELEASE=$2
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shift
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;;
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-c | --config)
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LXC_CONTAINER_CONFIG="$2"
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shift
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;;
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--)
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shift
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break
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