352 lines
9.3 KiB
Bash
352 lines
9.3 KiB
Bash
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#!/bin/sh
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#
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# This script will try to upgrade an LXC Debian template
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# 1. Start the LXC container if available
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# 2. Run some script to upgrade the container
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# 3. Stop the container
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# This script can be call by a cronjob (eg. daily, weekly,…)
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# Vars {{{
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readonly PROGNAME=$(basename "${0}")
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readonly PROGDIR=$(readlink -m $(dirname "${0}"))
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readonly ARGS="${*}"
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readonly NBARGS="${#}"
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[ -z "${DEBUG}" ] && DEBUG=1
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## Export DEBUG for sub-script
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export DEBUG
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readonly CT_ID_DEFAULT="199124"
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readonly SLEEP_DELAY_DEFAULT="20"
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## Colors
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readonly PURPLE='\033[1;35m'
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readonly RED='\033[0;31m'
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readonly RESET='\033[0m'
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readonly COLOR_DEBUG="${PURPLE}"
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# }}}
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usage() { # {{{
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cat <<- EOF
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usage: $PROGNAME [-d|-h|-i|-s]
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Start and upgrade an LXC container for Debian template
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EXAMPLES :
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- Upgrade default LXC container (${CT_ID_DEFAULT}) :
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${PROGNAME}
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- Specify the container ID :
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${PROGNAME} --id 666
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OPTIONS :
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-d,--debug
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Enable debug messages.
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-h,--help
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Print this help message.
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-i,--id
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Choose a different LXC container ID (default ${CT_ID_DEFAULT}).
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-s,--sleep
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Set a different delay to test container between each
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different state (default: ${SLEEP_DELAY_DEFAULT}).
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EOF
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}
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# }}}
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debug_message() { # {{{
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local_message="${1}"
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## Print message if DEBUG is enable (=0)
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_message}"
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return 0
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}
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# }}}
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error_message() { # {{{
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local_error_message="${1}"
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local_error_code="${2}"
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## Print error message
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printf '%b\n' "ERROR − ${PROGNAME} : ${RED}${local_error_message}${RESET}"
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exit "${local_error_code:=66}"
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}
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# }}}
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define_vars() { # {{{
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## If ct_id wasn't defined (argument) {{{
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if [ -z "${ct_id}" ]; then
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## Use default value
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readonly ct_id="${CT_ID_DEFAULT}"
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fi
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## }}}
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## If sleep_delay wasn't defined (argument) {{{
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if [ -z "${sleep_delay}" ]; then
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## Use default value
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readonly sleep_delay="${SLEEP_DELAY_DEFAULT}"
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fi
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## }}}
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}
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# }}}
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is_proxmox_absent() { # {{{
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## By default, Proxmox is absent on an host
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return_is_proxmox_absent="0"
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## Check if the system runs on a PVE kernel
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if ! uname --kernel-release -- | grep --quiet -- "pve";
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then
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return_is_proxmox_absent="0"
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debug_message "is_proxmox_absent − \
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Proxmox is ${RED}absent${COLOR_DEBUG} on this host."
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else
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return_is_proxmox_absent="1"
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debug_message "is_proxmox_absent − \
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Proxmox seems ${RED}present${COLOR_DEBUG} on this host."
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fi
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return "${return_is_proxmox_absent}"
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}
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# }}}
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is_lxc_container_absent() { # {{{
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local_ct_id="${1}"
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## By default, the LXC container is absent from the current host
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return_is_lxc_container_absent="0"
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## Check if the system runs on a PVE kernel
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if ! /usr/sbin/pct list -- | grep --quiet "${local_ct_id}";
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then
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return_is_lxc_container_absent="0"
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debug_message "is_lxc_container_absent − \
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The LXC container (${RED}${local_ct_id}${COLOR_DEBUG}) is ${RED}absent${COLOR_DEBUG} from this host."
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else
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return_is_lxc_container_absent="1"
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debug_message "is_lxc_container_absent − \
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The LXC container (${RED}${local_ct_id}${COLOR_DEBUG}) is ${RED}present${COLOR_DEBUG} on this host."
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fi
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return "${return_is_lxc_container_absent}"
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}
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# }}}
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is_lxc_container_state() { # {{{
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local_ct_id="${1}"
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local_ct_state="${2}"
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## Compare the status of the LXC container with argument
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if /usr/sbin/pct status "${local_ct_id}" -- | grep --quiet --word-regexp "${local_ct_state}";
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then
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return_is_lxc_container_state="0"
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debug_message "is_lxc_container_state − \
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The LXC container (${RED}${local_ct_id}${COLOR_DEBUG}) is in ${RED}${local_ct_state}${COLOR_DEBUG} state."
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else
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return_is_lxc_container_state="1"
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debug_message "is_lxc_container_state − \
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The LXC container (${RED}${local_ct_id}${COLOR_DEBUG}) is not in ${RED}${local_ct_state}${COLOR_DEBUG} state."
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fi
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return "${return_is_lxc_container_state}"
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}
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# }}}
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start_lxc_container() { # {{{
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local_ct_id="${1}"
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## By default, the container is not running
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return_start_lxc_container="1"
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## Start LXC container state
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/usr/sbin/pct start "${local_ct_id}" || exit 1
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## Wait a little for the container to start
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sleep "${sleep_delay}"
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## Verify LXC container status
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if is_lxc_container_state "${local_ct_id}" "running";
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then
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return_start_lxc_container="0"
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debug_message "start_lxc_container − \
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LXC container ${RED}${local_ct_id}${COLOR_DEBUG} is now ${RED}running${COLOR_DEBUG}."
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else
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return_start_lxc_container="1"
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debug_message "start_lxc_container − \
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LXC container ${RED}${local_ct_id}${COLOR_DEBUG} is still ${RED}stopped${COLOR_DEBUG}."
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fi
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return "${return_start_lxc_container}"
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}
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# }}}
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stop_lxc_container() { # {{{
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local_ct_id="${1}"
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## By default, the container is running
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return_stop_lxc_container="1"
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## Stop LXC container state
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/usr/sbin/pct stop "${local_ct_id}" || exit 1
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## Wait a little for the container to stop
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sleep "${sleep_delay}"
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## Verify LXC container status
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if is_lxc_container_state "${local_ct_id}" "stopped";
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then
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return_stop_lxc_container="0"
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debug_message "stop_lxc_container − \
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LXC container ${RED}${local_ct_id}${COLOR_DEBUG} is now ${RED}stopped${COLOR_DEBUG}."
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else
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return_stop_lxc_container="1"
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debug_message "stop_lxc_container − \
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LXC container ${RED}${local_ct_id}${COLOR_DEBUG} is still ${RED}running${COLOR_DEBUG}."
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fi
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return "${return_stop_lxc_container}"
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}
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# }}}
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upgrade_container() { # {{{
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local_ct_id="${1}"
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## Keep output if DEBUG mode is activated
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if [ "${DEBUG}" -eq "0" ]; then
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/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "wget https://git.ipr.univ-rennes.fr/cellinfo/scripts/raw/master/proxmox/proxmox.template.debian.sh --output-document=/tmp/proxmox.template.debian.sh" || exit 2
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/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "chmod +x /tmp/proxmox.template.debian.sh" || exit 2
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/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "/tmp/proxmox.template.debian.sh" || exit 2
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else
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/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "wget --quiet https://git.ipr.univ-rennes.fr/cellinfo/scripts/raw/master/proxmox/proxmox.template.debian.sh --output-document=/tmp/proxmox.template.debian.sh" || exit 2
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/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "chmod +x /tmp/proxmox.template.debian.sh" || exit 2
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/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "/tmp/proxmox.template.debian.sh" > /dev/null 2>&1 || exit 2
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fi
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}
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# }}}
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main() { # {{{
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## If Proxmox is not yet available on this host {{{
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### Exit
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is_proxmox_absent \
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&& exit 0
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## }}}
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## Define all vars
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define_vars
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## If the LXC container ID is absent from this host {{{
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### Exit
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is_lxc_container_absent "${ct_id}" \
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&& exit 0
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## }}}
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## If the LXC container ID is already running {{{
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### Exit with error message
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is_lxc_container_state "${ct_id}" "running" \
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&& error_message "LXC container (${ct_id}) is already running. \
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Please power it off if you don't have any work in progress." "3"
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## }}}
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## If the LXC container ID is stopped {{{
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### Try to start the container
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is_lxc_container_state "${ct_id}" "stopped" \
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&& start_lxc_container "${ct_id}"
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## }}}
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## Try to upgrade the container {{{
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### And re-stop the container
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### Then exit with success the script
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upgrade_container "${ct_id}" \
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&& stop_lxc_container "${ct_id}" \
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&& exit 0
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## }}}
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}
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# }}}
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# Manage arguments # {{{
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# This code can't be in a function due to argument management
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if [ ! "${NBARGS}" -eq "0" ]; then
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manage_arg="0"
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## If the first argument is not an option
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if ! printf -- '%s' "${1}" | grep -q -E -- "^-+";
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then
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## Print help message and exit
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printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
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printf '%b\n' "---"
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usage
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exit 1
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fi
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# Parse all options (start with a "-") one by one
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while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
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case "${1}" in
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-d|--debug ) ## debug
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DEBUG=0
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;;
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-h|--help ) ## help
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usage
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## Exit after help informations
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exit 0
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;;
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-i|--id ) ## Use given CT ID
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## Move to the next argument
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shift
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## Define ct_id
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readonly ct_id="${1}"
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;;
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-s|--sleep ) ## Use given sleeping delay
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## Move to the next argument
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shift
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## Define sleep_delay
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readonly sleep_delay="${1}"
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;;
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* ) ## unknow option
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printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
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printf '%b\n' "---"
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usage
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exit 1
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;;
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esac
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debug_message "Arguments management − \
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${RED}${1}${COLOR_DEBUG} option managed."
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## Move to the next argument
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shift
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manage_arg=$((manage_arg+1))
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done
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debug_message "Arguments management − \
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${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
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else
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debug_message "Arguments management − \
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No arguments/options to manage."
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fi
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# }}}
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main
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exit 255
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