scripts/proxmox/proxmox.template.debian.upg...

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#!/bin/sh
#
# This script will try to upgrade an LXC Debian template
# 1. Start the LXC container if available
# 2. Run some script to upgrade the container
# 3. Stop the container
# This script can be call by a cronjob (eg. daily, weekly,…)
# Vars {{{
readonly PROGNAME=$(basename "${0}")
readonly PROGDIR=$(readlink -m $(dirname "${0}"))
readonly ARGS="${*}"
readonly NBARGS="${#}"
[ -z "${DEBUG}" ] && DEBUG=1
## Export DEBUG for sub-script
export DEBUG
readonly CT_ID_DEFAULT="199121"
readonly SLEEP_DELAY_DEFAULT="20"
## Colors
readonly PURPLE='\033[1;35m'
readonly RED='\033[0;31m'
readonly RESET='\033[0m'
readonly COLOR_DEBUG="${PURPLE}"
# }}}
usage() { # {{{
cat <<- EOF
usage: $PROGNAME [-d|-h|-i|-s]
Start and upgrade an LXC container for Debian template
EXAMPLES:
- Upgrade default LXC container (${CT_ID_DEFAULT}) :
${PROGNAME}
- Specify the container ID :
${PROGNAME} --id 666
OPTIONS:
-d,--debug
Enable debug messages.
-h,--help
Print this help message.
-i,--id
Choose a different LXC container ID (default ${CT_ID_DEFAULT}).
-s,--sleep
Set a different delay to test container between each
different state (default: ${SLEEP_DELAY_DEFAULT}).
EOF
}
# }}}
debug_message() { # {{{
local_message="${1}"
## Print message if DEBUG is enable (=0)
[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG ${PROGNAME}: ${local_message}"
return 0
}
# }}}
error_message() { # {{{
local_error_message="${1}"
local_error_code="${2}"
## Print error message
printf '%b\n' "ERROR ${PROGNAME}: ${RED}${local_error_message}${RESET}"
exit "${local_error_code:=66}"
}
# }}}
define_vars() { # {{{
## If ct_id wasn't defined (argument) {{{
if [ -z "${ct_id}" ]; then
## Use default value
readonly ct_id="${CT_ID_DEFAULT}"
fi
## }}}
## If sleep_delay wasn't defined (argument) {{{
if [ -z "${sleep_delay}" ]; then
## Use default value
readonly sleep_delay="${SLEEP_DELAY_DEFAULT}"
fi
## }}}
}
# }}}
is_proxmox_absent() { # {{{
## By default, Proxmox is absent on an host
return_is_proxmox_absent="0"
## Check if the system runs on a PVE kernel
if ! uname --kernel-release -- | grep --quiet -- "pve";
then
return_is_proxmox_absent="0"
debug_message "is_proxmox_absent \
Proxmox is ${RED}absent${COLOR_DEBUG} on this host."
else
return_is_proxmox_absent="1"
debug_message "is_proxmox_absent \
Proxmox seems ${RED}present${COLOR_DEBUG} on this host."
fi
return "${return_is_proxmox_absent}"
}
# }}}
is_lxc_container_absent() { # {{{
local_ct_id="${1}"
## By default, the LXC container is absent from the current host
return_is_lxc_container_absent="0"
## Check if the system runs on a PVE kernel
if ! /usr/sbin/pct list -- | grep --quiet "${local_ct_id}";
then
return_is_lxc_container_absent="0"
debug_message "is_lxc_container_absent \
The LXC container (${RED}${local_ct_id}${COLOR_DEBUG}) is ${RED}absent${COLOR_DEBUG} from this host."
else
return_is_lxc_container_absent="1"
debug_message "is_lxc_container_absent \
The LXC container (${RED}${local_ct_id}${COLOR_DEBUG}) is ${RED}present${COLOR_DEBUG} on this host."
fi
return "${return_is_lxc_container_absent}"
}
# }}}
is_lxc_container_state() { # {{{
local_ct_id="${1}"
local_ct_state="${2}"
## Compare the status of the LXC container with argument
if /usr/sbin/pct status "${local_ct_id}" -- | grep --quiet --word-regexp "${local_ct_state}";
then
return_is_lxc_container_state="0"
debug_message "is_lxc_container_state \
The LXC container (${RED}${local_ct_id}${COLOR_DEBUG}) is in ${RED}${local_ct_state}${COLOR_DEBUG} state."
else
return_is_lxc_container_state="1"
debug_message "is_lxc_container_state \
The LXC container (${RED}${local_ct_id}${COLOR_DEBUG}) is not in ${RED}${local_ct_state}${COLOR_DEBUG} state."
fi
return "${return_is_lxc_container_state}"
}
# }}}
start_lxc_container() { # {{{
local_ct_id="${1}"
## By default, the container is not running
return_start_lxc_container="1"
## Start LXC container state
/usr/sbin/pct start "${local_ct_id}" || exit 1
## Wait a little for the container to start
sleep "${sleep_delay}"
## Verify LXC container status
if is_lxc_container_state "${local_ct_id}" "running";
then
return_start_lxc_container="0"
debug_message "start_lxc_container \
LXC container ${RED}${local_ct_id}${COLOR_DEBUG} is now ${RED}running${COLOR_DEBUG}."
else
return_start_lxc_container="1"
debug_message "start_lxc_container \
LXC container ${RED}${local_ct_id}${COLOR_DEBUG} is still ${RED}stopped${COLOR_DEBUG}."
fi
return "${return_start_lxc_container}"
}
# }}}
stop_lxc_container() { # {{{
local_ct_id="${1}"
## By default, the container is running
return_stop_lxc_container="1"
## Stop LXC container state
/usr/sbin/pct stop "${local_ct_id}" || exit 1
## Wait a little for the container to stop
sleep "${sleep_delay}"
## Verify LXC container status
if is_lxc_container_state "${local_ct_id}" "stopped";
then
return_stop_lxc_container="0"
debug_message "stop_lxc_container \
LXC container ${RED}${local_ct_id}${COLOR_DEBUG} is now ${RED}stopped${COLOR_DEBUG}."
else
return_stop_lxc_container="1"
debug_message "stop_lxc_container \
LXC container ${RED}${local_ct_id}${COLOR_DEBUG} is still ${RED}running${COLOR_DEBUG}."
fi
return "${return_stop_lxc_container}"
}
# }}}
upgrade_container() { # {{{
local_ct_id="${1}"
## Keep output if DEBUG mode is activated
if [ "${DEBUG}" -eq "0" ]; then
/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "wget https://git.ipr.univ-rennes1.fr/cellinfo/scripts/raw/master/proxmox/proxmox.template.debian.sh --output-document=/tmp/proxmox.template.debian.sh" || exit 2
/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "chmod +x /tmp/proxmox.template.debian.sh" || exit 2
/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "/tmp/proxmox.template.debian.sh" || exit 2
else
/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "wget --quiet https://git.ipr.univ-rennes1.fr/cellinfo/scripts/raw/master/proxmox/proxmox.template.debian.sh --output-document=/tmp/proxmox.template.debian.sh" || exit 2
/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "chmod +x /tmp/proxmox.template.debian.sh" || exit 2
/usr/sbin/pct exec "${local_ct_id:-/dev/null}" -- bash -c "/tmp/proxmox.template.debian.sh" > /dev/null 2>&1 || exit 2
fi
}
# }}}
main() { # {{{
## If Proxmox is not yet available on this host {{{
### Exit
is_proxmox_absent \
&& exit 0
## }}}
## Define all vars
define_vars
## If the LXC container ID is absent from this host {{{
### Exit
is_lxc_container_absent "${ct_id}" \
&& exit 0
## }}}
## If the LXC container ID is already running {{{
### Exit with error message
is_lxc_container_state "${ct_id}" "running" \
&& error_message "LXC container (${ct_id}) is already running. \
Please power it off if you don't have any work in progress." "3"
## }}}
## If the LXC container ID is stopped {{{
### Try to start the container
is_lxc_container_state "${ct_id}" "stopped" \
&& start_lxc_container "${ct_id}"
## }}}
## Try to upgrade the container {{{
### And re-stop the container
### Then exit with success the script
upgrade_container "${ct_id}" \
&& stop_lxc_container "${ct_id}" \
&& exit 0
## }}}
}
# }}}
# Manage arguments # {{{
# This code can't be in a function due to argument management
if [ ! "${NBARGS}" -eq "0" ]; then
manage_arg="0"
## If the first argument is not an option
if ! printf -- '%s' "${1}" | grep -q -E -- "^-+";
then
## Print help message and exit
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
printf '%b\n' "---"
usage
exit 1
fi
# Parse all options (start with a "-") one by one
while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
case "${1}" in
-d|--debug ) ## debug
DEBUG=0
;;
-h|--help ) ## help
usage
## Exit after help informations
exit 0
;;
-i|--id ) ## Use given CT ID
## Move to the next argument
shift
## Define ct_id
readonly ct_id="${1}"
;;
-s|--sleep ) ## Use given sleeping delay
## Move to the next argument
shift
## Define sleep_delay
readonly sleep_delay="${1}"
;;
* ) ## unknow option
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
printf '%b\n' "---"
usage
exit 1
;;
esac
debug_message "Arguments management \
${RED}${1}${COLOR_DEBUG} option managed."
## Move to the next argument
shift
manage_arg=$((manage_arg+1))
done
debug_message "Arguments management \
${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
else
debug_message "Arguments management \
No arguments/options to manage."
fi
# }}}
main
exit 255