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overnode.sh
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overnode.sh
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#!/bin/bash
set -e
set -o errexit -o pipefail -o noclobber -o nounset
version_docker=19.03.11
version_compose=1.26.0
version_weave=2.6.5
version_proxy=1.7.3.4-r0
version_git=latest
version_loki=1.5.0 # master-de644b5 # ensure https://github.com/grafana/loki/issues/2313 is fixed before upgrading
version_system=0.11.15
provider_proxy="alpine/socat"
provider_git="alpine/git"
provider_loki="grafana/loki-docker-driver"
provider_compose="docker/compose"
image_proxy="${provider_proxy}:${version_proxy}"
image_git="${provider_git}:${version_git}"
image_loki="${provider_loki}:${version_loki}"
image_compose="${provider_compose}:${version_compose}"
log="[overnode]"
debug_on="false"
green_c='\033[1;32m'
red_c='\033[1;31m'
cyan_c='\033[1;36m'
yellow_c='\033[1;33m'
gray_c='\033[1;30m'
no_c='\033[0;37m'
current_c="${no_c}"
no_color_mode=""
line="${gray_c}----------------------------------------------------------------------------${no_c}"
set_console_nocolor() {
green_c=''
red_c=''
cyan_c=''
yellow_c=''
gray_c=''
no_c=''
current_c=""
no_color_mode="y"
line="----------------------------------------------------------------------------"
}
set_console_color() {
current_c=${1:-}
printf "$current_c" >&2
}
set_console_normal() {
if [ "$current_c" != "${no_c}" ]
then
current_c=$no_c
printf "${no_c}" >&2
fi
}
trap set_console_normal EXIT
debug() {
if [[ ${debug_on} == "true" ]]; then
(>&2 echo -e "${gray_c}$log $@${current_c}")
fi
}
debug_cmd() {
debug "${yellow_c}>>>${gray_c} $@"
}
info() {
(>&2 echo -e "$log $@${current_c}")
}
info_no_prefix() {
(>&2 echo -e "$@${current_c}")
}
info_progress() {
(>&2 echo -e "${cyan_c}$log $@${current_c}")
}
warn() {
(>&2 echo -e "${yellow_c}$log $@${current_c}")
}
error() {
(>&2 echo -e "${red_c}$log $@${current_c}")
}
println() {
echo -e "$@"
}
prepend_stdout() {
suffix=$1
while IFS= read -r line; do echo -e "$suffix $line"; done
}
prepend_stderr() {
suffix=$1
while IFS= read -r line; do echo -e "$suffix $line" >&2; done
}
run_cmd_wrap() {
debug_cmd $@
$@
}
exit_success() {
debug "${green_c}[action completed]${current_c}"
exit 0
}
exit_error() {
if [ -n "${1:-}" ]
then
error "Error: ${1:-}"
fi
shift
set_console_normal
for line in "$@"
do
info $line
done
error "[action aborted]"
exit 1
}
exists(){
if [ "$2" != in ]; then
echo "Incorrect usage."
echo "Correct usage: exists {key} in {array}"
return
fi
eval '[ ${'$3'[$1]+muahaha} ]'
}
usage_no_exit() {
printf """> ${cyan_c}overnode${no_c} ${gray_c}[--debug] [--no-color]${no_c} ${cyan_c}<action> [OPTION] ...${no_c}
Actions: Description:
${line}
${cyan_c}install${no_c} Install overnode and the required dependencies.
${cyan_c}upgrade${no_c} Download and install newer version of overnode and dependencies.
${line}
${cyan_c}launch${no_c} Launch the node and / or join a cluster.
${cyan_c}reset${no_c} Leave a cluster and destroy the node.
${cyan_c}prime${no_c} Waits until the node is ready to allocate IP addresses.
${cyan_c}resume${no_c} Restart previously launched node if it is not running.
${line}
${cyan_c}connect${no_c} Add an additional target peer node to connect to.
${cyan_c}forget${no_c} Remove existing target peer node.
${line}
${cyan_c}expose${no_c} Establish connectivity between the host and the cluster.
${cyan_c}hide${no_c} Destroy connectivity between the host and the cluster.
${cyan_c}env${no_c} Print remote node connection string for docker client.
${line}
${cyan_c}dns-lookup${no_c} Lookup DNS entries of a cluster.
${cyan_c}dns-add${no_c} Add extra DNS entries.
${cyan_c}dns-remove${no_c} Remove extra DNS entries.
${line}
${cyan_c}login${no_c} Provide credentials to pull images from private repositories.
${cyan_c}logout${no_c} Remove credentials to pull images from private repositories.
${line}
${cyan_c}init${no_c} Download configs for services from peer nodes or external repos.
${cyan_c}up${no_c} Build, (re)create, and start containers for services.
${cyan_c}down${no_c} Stop and remove containers, networks, volumes, and images.
${line}
${cyan_c}start${no_c} Start existing containers of services.
${cyan_c}stop${no_c} Stop running containers without removing them.
${cyan_c}restart${no_c} Restart all stopped and running services.
${cyan_c}pause${no_c} Pause running containers of services.
${cyan_c}unpause${no_c} Unpause paused containers of services.
${cyan_c}kill${no_c} Force running containers to stop by sending a signal.
${cyan_c}rm${no_c} Remove stopped containers of services.
${cyan_c}pull${no_c} Pull images associated with services.
${cyan_c}push${no_c} Push images for services to their respective repositories.
${line}
${cyan_c}ps${no_c} List containers and states of services.
${cyan_c}logs${no_c} Display log output from services.
${cyan_c}top${no_c} Display the running processes for containers of services.
${cyan_c}events${no_c} Stream events for containers of services in the cluster.
${cyan_c}config${no_c} Validate and view the configuration for services.
${cyan_c}status${no_c} View the state of the node, connections, dns, ipam, endpoints.
${cyan_c}inspect${no_c} View and inspect the state of the node in full details.
${line}
${cyan_c}help${no_c} Print this help information.
${cyan_c}version${no_c} Print version information.
${line}
"""
}
current_command=""
ensure_no_args() {
set_console_color $red_c
! PARSED=$(getopt --options=h --longoptions=help --name "[overnode] Error: invalid argument(s)" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
exit_error "" "Run '> overnode ${current_command} --help' for more information"
fi
set_console_normal
eval set -- "$PARSED"
while true; do
case "$1" in
--help|-h)
printf """> ${cyan_c}overnode${no_c} ${gray_c}[--debug] [--no-color]${no_c} ${cyan_c}${current_command} [OPTION] ...${no_c}
Options: Description:
${line}
${cyan_c}-h|--help${no_c} Print this help.
${line}
""";
exit_success
;;
--)
shift
break
;;
*)
exit_error "internal: $1" "Please report this bug to https://github.com/overnode-org/overnode/issues"
;;
esac
done
if [[ -n "$@" ]]
then
exit_error "unexpected argument(s): $@" "Run '> overnode ${current_command} --help' for more information"
fi
}
version_action() {
shift
ensure_no_args $@
println "Overnode - Multi-node Docker containers orchestration."
println " version: $version_system"
println " docker: $version_docker [required], $(docker version 2>&1 | grep Version | head -n1 | awk '{print $2}') [installed]"
println " weave: $version_weave [required], $(weave version 2>&1 | grep script | head -n1 | awk '{print $3}') [installed]"
println " compose: $version_compose"
println " agent: $version_proxy"
}
ensure_root() {
if [ "$(id -u)" -ne "0" ]
then
exit_error "root privileges required" "Try '> sudo overnode $@'"
fi
}
ensure_getopt() {
# -allow a command to fail with !’s side effect on errexit
# -use return value from ${PIPESTATUS[0]}, because ! hosed $?
! getopt --test > /dev/null
if [[ ${PIPESTATUS[0]} -ne 4 ]]; then
exit_error "requires: getopt, found: none" "Try installing getopt utility using operation system package manager"
fi
}
ensure_docker() {
if [ "$(which docker | wc -l)" -eq "0" ]
then
exit_error "requires: docker, found: none" "Run '> overnode install' to install docker"
fi
}
ensure_weave() {
if [ "$(which weave | wc -l)" -eq "0" ]
then
exit_error "requires: weave, found: none" "Run '> overnode install' to install weave"
fi
}
ensure_weave_running() {
tmp=$(weave status 2>&1) && weave_running=$? || weave_running=$?
if [ $weave_running -ne 0 ]
then
exit_error "weave is not running" "Run '> overnode launch' to start the node" "Run '> overnode resume' to restart the node"
fi
}
ensure_overnode_running() {
if [ ! -f /etc/overnode/id ]
then
exit_error "overnode is not running" "Run '> overnode launch' to start the node"
fi
}
restart_running_containers() {
# the plugin could be not running if upgrade is interrupted
# make sure it is running, before restarting the containers
cmd="docker plugin enable loki"
run_cmd_wrap $cmd || {
warn "failure to enable loki plugin"
info "Failed command:"
info "> ${cmd}"
}
if [ -n "$@" ]
then
cmd="docker start $@"
run_cmd_wrap $cmd || {
warn "failure to re-start running containers"
info "Failed command:"
info "> ${cmd}"
}
fi
set_console_normal
}
install_action() {
shift
set_console_color $red_c
! PARSED=$(getopt --options=f,h --longoptions=force,help --name "[overnode] Error: invalid argument(s)" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
exit_error "" "Run '> overnode ${current_command} --help' for more information"
fi
set_console_normal
eval set -- "$PARSED"
force="n"
while true; do
case "$1" in
--help|-h)
printf """> ${cyan_c}overnode${no_c} ${gray_c}[--debug] [--no-color]${no_c} ${cyan_c}install [OPTION] ...${no_c}
Options: Description:
${line}
${cyan_c}-f|--force${no_c} Force to re-install, if already installed.
${line}
${cyan_c}-h|--help${no_c} Print this help.
${line}
""";
exit_success
;;
--force|-f)
force="y"
shift
;;
--)
shift
break
;;
*)
exit_error "internal: $1" "Please report this bug to https://github.com/overnode-org/overnode/issues"
;;
esac
done
if [ $# -ne 0 ]
then
exit_error "unexpected argument(s): $1" "Run '> overnode ${current_command} --help' for more information"
fi
ensure_root
cmd="mkdir /etc/overnode"
[ -d /etc/overnode ] || run_cmd_wrap $cmd || {
exit_error "failure to create directory: /etc/overnode" "Failed command:" "> $cmd"
}
if [ ! -f /etc/overnode/system.env ]
then
# running installation first time
if [ "$(which docker | wc -l)" -ne "0" ]
then
install_docker="false"
fi
echo "install_docker=${install_docker:-true}" > /etc/overnode/system.env
if [ "$(which weave | wc -l)" -ne "0" ]
then
install_weave="false"
fi
echo "install_weave=${install_weave:-true}" >> /etc/overnode/system.env
fi
eval $(cat /etc/overnode/system.env) # will source install_docker flag
installed_something="n"
info_progress "Installing docker ..."
if [[ ${install_docker} == "true" ]] && [[ "$(which docker | wc -l)" -eq "0" || ${force} == "y" ]]
then
set_console_color "${gray_c}"
cmd="wget -q --no-cache -O /tmp/get.docker.sh https://get.docker.com"
run_cmd_wrap $cmd || {
exit_error "failure to download file: https://get.docker.com" "Failed command:" "> ${cmd}"
}
export VERSION=${version_docker}
cmd="sh /tmp/get.docker.sh"
run_cmd_wrap $cmd || {
exit_error "failure to install docker" "Failed command:" "> ${cmd}"
}
set_console_normal
installed_something="y"
info_progress "=> done"
else
info_progress "=> already installed"
fi
info_progress "Installing weave ..."
if [[ ${install_weave} == "true" ]]
then
if [[ "$(which weave | wc -l)" -eq "0" ]]
then
set_console_color "${gray_c}"
cmd="wget -q --no-cache -O /usr/local/bin/weave https://github.com/weaveworks/weave/releases/download/v${version_weave}/weave"
run_cmd_wrap $cmd || {
exit_error "failure to download file: https://github.com/weaveworks/weave/releases/download/v${version_weave}/weave" "Failed command:" "> ${cmd}"
}
run_cmd_wrap chmod a+x /usr/local/bin/weave
cmd="weave setup"
run_cmd_wrap $cmd || {
exit_error "failure to setup weave" "Failed command:" "> ${cmd}"
}
set_console_normal
installed_something="y"
elif [[ ${force} == "y" ]]
then
set_console_color "${gray_c}"
cmd="rm /tmp/weave"
[ ! -f /tmp/weave ] || run_cmd_wrap $cmd || {
exit_error "failure to delete file: /tmp/weave" "Failed command:" "> ${cmd}"
}
cmd="wget -q --no-cache -O /tmp/weave https://github.com/weaveworks/weave/releases/download/v${version_weave}/weave"
run_cmd_wrap $cmd || {
exit_error "failure to download file: https://github.com/weaveworks/weave/releases/download/v${version_weave}/weave" "Failed command:" "> ${cmd}"
}
run_cmd_wrap chmod a+x /tmp/weave
cmd="/tmp/weave setup"
run_cmd_wrap $cmd || {
exit_error "failure to setup weave" "Failed command:" "> ${cmd}"
}
set_console_normal
tmp=$(weave status 2>&1) && weave_running=$? || weave_running=$?
if [ $weave_running -eq 0 ]
then
info "Recreating weave ..."
set_console_color "${gray_c}"
cmd="weave stop"
run_cmd_wrap $cmd || {
exit_error "failure to stop weave" "Failed command:" "> ${cmd}"
}
run_cmd_wrap cp /tmp/weave /usr/local/bin/weave
# use --resume instead of seed peers, see details: https://github.com/weaveworks/weave/issues/3050#issuecomment-326932723
cmd_without_peers=$(cat /etc/overnode/token)
cmd="${cmd_without_peers} --resume"
run_cmd_wrap $cmd || {
exit_error "failure to start weave" "Failed command:" "> ${cmd}"
}
set_console_normal
else
run_cmd_wrap cp /tmp/weave /usr/local/bin/weave
fi
installed_something="y"
info_progress "=> done"
else
info_progress "=> already installed"
fi
fi
info_progress "Installing loki ..."
if [[ "$(docker plugin ls | grep loki | wc -l)" -eq "0" ]]
then
set_console_color "${gray_c}"
cmd="docker plugin install ${image_loki} --alias loki --grant-all-permissions"
run_cmd_wrap $cmd || {
exit_error "failure to install loki ${image_loki} plugin" "Failed command:" "> ${cmd}"
}
set_console_normal
installed_something="y"
info_progress "=> done"
elif [[ ${force} == "y" ]]
then
set_console_color "${gray_c}"
running_containers=""
for cont_id in $(docker ps -q)
do
log_type=$(docker inspect --format='{{json .HostConfig.LogConfig.Type}}' $cont_id)
if [ $log_type == '"loki"' ]
then
running_containers="$running_containers $cont_id"
fi
done
trap "restart_running_containers $running_containers" EXIT
if [ -n "$running_containers" ]
then
cmd="docker stop $running_containers"
run_cmd_wrap $cmd || {
warn "failure to stop running containers, ignoring"
info "Failed command:"
info "> ${cmd}"
}
fi
cmd="docker plugin disable loki"
run_cmd_wrap $cmd && {
cmd="docker plugin upgrade loki ${image_loki} --grant-all-permissions --skip-remote-check"
run_cmd_wrap $cmd || {
warn "failure to upgrade loki plugin"
info "Failed command:"
info "> ${cmd}"
}
cmd="docker plugin enable loki"
run_cmd_wrap $cmd || {
exit_error "failure to enable loki plugin" "Failed command:" "> ${cmd}"
}
} || {
# The plugin is likely in use by another recently started container
# which we missed stopping above.
# However, it might be also known issue:
# https://github.com/grafana/loki/issues/2313
# Do not panic, just continue
warn "failure to disable loki plugin, skipping loki upgrade"
info "Failed command:"
info "> ${cmd}"
info "It might be the known issue:"
info "> https://github.com/grafana/loki/issues/2313"
info "Workaround: restart docker and try upgrading again:"
info "> systemctl daemon-reload && systemctl restart docker || service docker restart"
}
trap set_console_normal EXIT # restore the previous global trap
if [ -n "$running_containers" ]
then
cmd="docker start $running_containers"
run_cmd_wrap $cmd || {
exit_error "failure to re-start running containers" "Failed command:" "> ${cmd}"
}
fi
set_console_normal
installed_something="y"
info_progress "=> done"
else
info_progress "=> already installed"
fi
info_progress "Installing compose ..."
if [[ "$(docker images | grep ${provider_compose} | grep ${version_compose} | wc -l)" -eq "0" || ${force} == "y" ]]
then
set_console_color "${gray_c}"
cmd="docker pull ${image_compose}"
run_cmd_wrap $cmd || {
exit_error "failure to pull ${image_compose} image" "Failed command:" "> ${cmd}"
}
set_console_normal
installed_something="y"
info_progress "=> done"
else
info_progress "=> already installed"
fi
info_progress "Installing git ..."
if [[ "$(docker images | grep ${provider_git} | grep ${version_git} | wc -l)" -eq "0" || ${force} == "y" ]]
then
set_console_color "${gray_c}"
cmd="docker pull ${image_git}"
run_cmd_wrap $cmd || {
exit_error "failure to pull ${image_git} image" "Failed command:" "> ${cmd}"
}
set_console_normal
installed_something="y"
info_progress "=> done"
else
info_progress "=> already installed"
fi
info_progress "Installing agent ..."
if [[ "$(docker images | grep ${provider_proxy} | grep ${version_proxy} | wc -l)" -eq "0" || ${force} == "y" ]]
then
set_console_color "${gray_c}"
cmd="docker pull ${image_proxy}"
run_cmd_wrap $cmd || {
exit_error "failure to pull ${image_proxy} image" "Failed command:" "> ${cmd}"
}
set_console_normal
installed_something="y"
info_progress "=> done"
else
info_progress "=> already installed"
fi
if [ "${installed_something}" == "n" ]
then
info ""
warn "Everything is already installed."
info "> run '> overnode upgrade' to upgrade."
info "> run '> overnode install --force' to re-install."
fi
println "[-] Installed"
}
upgrade_action() {
shift
set_console_color $red_c
! PARSED=$(getopt --options="h" --longoptions="version:,help" --name "[overnode] Error: invalid argument(s)" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
exit_error "" "Run '> overnode ${current_command} --help' for more information"
fi
set_console_normal
eval set -- "$PARSED"
version="master"
while true; do
case "$1" in
--help|-h)
printf """> ${cyan_c}overnode${no_c} ${gray_c}[--debug] [--no-color]${no_c} ${cyan_c}upgrade [OPTION] ...${no_c}
Options: Description:
${line}
${cyan_c}--version VERSION${no_c}
Specific version to upgrade to. Default is latest available.
See available version online:
https://github.com/overnode-org/overnode/releases
${line}
${cyan_c}-h|--help${no_c} Print this help.
${line}
""";
exit_success
;;
--version)
version=$2
shift 2
;;
--)
shift
break
;;
*)
exit_error "internal: $1" "Please report this bug to https://github.com/overnode-org/overnode/issues"
;;
esac
done
if [ $# -ne 0 ]
then
exit_error "unexpected argument(s): $@" "Run '> overnode ${current_command} --help' for more information"
fi
ensure_root
[ ! -f /tmp/install.sh ] || rm /tmp/install.sh
cmd="wget -q --no-cache -O /tmp/install.sh https://raw.githubusercontent.com/overnode-org/overnode/${version}/install.sh"
run_cmd_wrap $cmd || {
exit_error "failure to download file: https://raw.githubusercontent.com/overnode-org/overnode/${version}/install.sh" \
"Failed command:" "> $cmd" \
"Is version '${version}' correct?" \
"See available versions online: https://github.com/overnode-org/overnode/releases"
}
chmod a+x /tmp/install.sh
cmd="/tmp/install.sh --force"
run_cmd_wrap $cmd || {
exit_error "upgrade unsuccessful: /tmp/install.sh script exited abnormally" "Failed command:" "> $cmd"
}
# the install.sh will invoke new overnode install and it will print the final status
}
create_main_config() {
image_proxy=$1
node_id=$2
weave_run=$3
[ -f /etc/overnode/system.yml ] && rm /etc/overnode/system.yml
printf """
version: '3.7'
services:
overnode:
container_name: overnode
hostname: overnode.weave.local
image: ${image_proxy}
init: true
environment:
WEAVE_CIDR: 10.39.240.${node_id}/12
volumes:
- /etc/overnode/volume:/overnode.etc
- overnode:/overnode
- ${weave_run}:/var/run/weave:ro
labels:
- works.weave.role=system
- org.overnode.role=system
restart: unless-stopped
network_mode: bridge
command: TCP-LISTEN:2375,reuseaddr,fork UNIX-CLIENT:/var/run/weave/weave.sock
volumes:
overnode:
driver: local
name: overnode
labels:
- org.overnode.role=system
""" > /etc/overnode/system.yml
}
launch_action() {
shift
set_console_color $red_c
! PARSED=$(getopt --options="h" --longoptions=token:,id:,help --name "[overnode] Error: invalid argument(s)" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
exit_error "" "Run '> overnode ${current_command} --help' for more information"
fi
set_console_normal
eval set -- "$PARSED"
token=""
node_id=""
while true; do
case "$1" in
--help|-h)
printf """> ${cyan_c}overnode${no_c} ${gray_c}[--debug] [--no-color]${no_c} ${cyan_c}launch --id ID [OPTION] --token TOKEN ... [HOST] ...${no_c}
Options: Description:
${line}
${cyan_c}HOST${no_c} Peer nodes to connect to in order to form a cluster.
${cyan_c}--id ID${no_c} Unique within a cluster node identifier. Number from 1 to 255.
${cyan_c}--token TOKEN${no_c}
Same password shared by the nodes in a cluster.
${line}
${cyan_c}-h|--help${no_c} Print this help.
${line}
""";
exit_success
;;
--token)
token=$2
shift 2
;;
--id)
node_id=$2
shift 2
;;
--)
shift
break
;;
*)
exit_error "internal: $1" "Please report this bug to https://github.com/overnode-org/overnode/issues"
;;
esac
done
if [ -z "$token" ]
then
exit_error "missing required parameter: token" "Run '> overnode ${current_command} --help' for more information"
fi
if [ -z "$node_id" ]
then
exit_error "missing required parameter: id" "Run '> overnode ${current_command} --help' for more information"
fi
pat="^([1-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$"
if [[ $node_id =~ $pat ]]
then
true
else
exit_error "invalid argument: id, required: number [1-255], received: $node_id" "Run '> overnode ${current_command} --help' for more information"
fi
ensure_root
ensure_docker
ensure_weave
[ -d /etc/overnode ] || mkdir /etc/overnode
if [ -f /etc/overnode/id ]
then
node_id_existing=$(cat /etc/overnode/id)
if [[ "${node_id}" != "${node_id_existing}" ]]
then
exit_error "invalid argument: id, required: ${node_id_existing} (existing), received: $node_id" \
"Run '> overnode ${current_command} --help' for more information" \
"Run '> overnode reset' to destroy the existing node"
fi
else
echo ${node_id} > /etc/overnode/id
fi
info_progress "Launching weave ..."
tmp=$(weave status 2>&1) && weave_running=$? || weave_running=$?
if [ $weave_running -ne 0 ]
then
export CHECKPOINT_DISABLE=1
cmd_without_peers="weave launch --plugin=false --password=${token} --dns-domain=weave.local. --rewrite-inspect \
--ipalloc-range 10.40.0.0/13 --ipalloc-default-subnet 10.32.0.0/12 --ipalloc-init seed=::1,::2,::3,::4 \
--name=::${node_id}"
[ ! -f /etc/overnode/token ] || rm /etc/overnode/token
echo ${cmd_without_peers} > /etc/overnode/token
cmd="${cmd_without_peers} $@"
debug_cmd $cmd
output=$($cmd) && weave_running=$? || weave_running=$?
if [[ $weave_running -ne 0 ]]
then
cid=$(docker ps --all | grep weave | head -n 1 | awk '{print $1}')
exit_error "weave container terminated abnormally" "Run '> docker logs ${cid}' for more information"
fi
info_progress "=> done: $output"
else
info_progress "=> already running"
fi
info_progress "Launching agent ..."
weave_socket=$(weave config)
weave_run=${weave_socket#-H=unix://}
weave_run=${weave_run%/weave.sock}
create_main_config ${image_proxy} ${node_id} ${weave_run}
# give weave a bit of time to start
# otherwise the following command fails to connect to docker
# need to think about better solution
sleep 5
# overnode-wdir is choosen to not to conflict with /wdir-${project_id}
# for user initiated compose up actions
cmd="docker run --rm \
-w /overnode-wdir \
-v /etc/overnode/system.yml:/overnode-wdir/docker-compose.yml \
-v ${weave_run}:${weave_run}:ro \
${image_compose} ${weave_socket} --compatibility up -d --remove-orphans"
run_cmd_wrap $cmd && info_progress "=> done" || {
exit_error "failure to run docker container" "Failed command:" "> $cmd"
}
[ -d /tmp/.overnode ] || mkdir /tmp/.overnode
[ -f /tmp/.overnode/sleep-infinity.sh ] || printf """
echo started;
while sleep 3600; do :; done
""" > /tmp/.overnode/sleep-infinity.sh
[ -f /tmp/.overnode/sync-etc.sh ] || printf '''
#!/bin/bash
set -e
source_file="$1"
source_dir="/tmp/overnode.etc"
[ -d "${source_dir}" ] && rm -Rf "${source_dir:?}"/* # If dir exists, delete all items inside it (cleanup)
[ -d "${source_dir}" ] || mkdir "${source_dir}" # If dir does not exist, create it.
if [ -f "${source_file}" ] # file may not exist when down clean up case
then
tar x -f "${source_file}" -C "${source_dir}" # extract files to /tmp/overnode.etc
fi
target_dir=$2
[ -d "${target_dir}" ] || mkdir "${target_dir}" # create dir if not exists
mount_dir=$3
dry_run=""
md5compare() {
sum1=$(md5sum "$1" | cut -d " " -f 1)
sum2=$(md5sum "$2" | cut -d " " -f 1)
if test "${sum1}" = "${sum2}"
then
return 0;
else
return 1;
fi
}
IFS="" # Unset IFS, keeps spaces from being interpreted as seperators, avoiding newline because of printf quoting issue human error possibilities.
find ${source_dir} | sed -n "s|^${source_dir}/||p" | while read curr_file # for item in /tmp/overnode.etc,
do
if [ -f "${source_dir}/${curr_file}" ]
then
if [ -f "${target_dir}/${curr_file}" ]
then
md5compare "${source_dir}"/"${curr_file}" "${target_dir}/${curr_file}" || {
echo "Recreating ${mount_dir}/${curr_file} ..."
${dry_run} cp "${source_dir}"/"${curr_file}" "${target_dir}/${curr_file}"
}
elif [ -d "${target_dir}/${curr_file}" ]
then
echo "Recreating ${mount_dir}/${curr_file} ..."
${dry_run} rm -Rf "${target_dir}/${curr_file}"
${dry_run} cp "${source_dir}/${curr_file}" "${target_dir}/${curr_file}"
else
echo "Creating ${mount_dir}/${curr_file} ..."
${dry_run} cp "${source_dir}/${curr_file}" "${target_dir}/${curr_file}"
fi
else # directory
if [ -f "${target_dir}/${curr_file}" ]
then
echo "Recreating ${mount_dir}/${curr_file} ..."
${dry_run} rm -Rf "${target_dir}/${curr_file}"
${dry_run} cp -r "${source_dir}/${curr_file}" "${target_dir}/${curr_file}"
elif [ -d "${target_dir}/${curr_file}" ]
then
true # do nothing
else
echo "Creating ${mount_dir}/${curr_file} ..."
${dry_run} cp -r "${source_dir}/${curr_file}" "${target_dir}/${curr_file}"
fi
fi
done
# Note: Following for command is influenced by the IFS above
find ${source_dir} | sed -n "s|^${source_dir}/||p" | while read curr_file
do
if [ -f "${source_dir}/${curr_file}" ] || [ -d "${source_dir}/${curr_file}" ]
then
true
else
echo "Deleting ${mount_dir}/${curr_file} ..."
${dry_run} rm -Rf "${target_dir}/${curr_file}"
fi
done
unset IFS
rm -Rf "${source_dir}"
''' > /tmp/.overnode/sync-etc.sh
cmd="docker cp /tmp/.overnode/. overnode:/overnode"
run_cmd_wrap $cmd || {
exit_error "failure to upload files to the overnode volume" "Failed command:" "> $cmd"
}
rm -Rf /tmp/.overnode
println "[$node_id] Node launched"
}
resume_action() {
shift
ensure_no_args $@
ensure_root
ensure_docker
ensure_weave
ensure_overnode_running
tmp=$(weave status 2>&1) && weave_running=$? || weave_running=$?
if [ $weave_running -ne 0 ]
then
info_progress "Resuming weave ..."
cmd="docker start weave"
run_cmd_wrap $cmd > /dev/null || {
exit_error "failure to start weave" "Failed command:" "> $cmd"
}
info_progress "=> done"
else
info_progress "Resuming weave ..."
info_progress "=> already running"
fi
info_progress "Resuming agent ..."
if [ "$(docker ps --filter name=overnode -q)" == "" ]
then
cmd="docker start overnode"
run_cmd_wrap $cmd > /dev/null || {
exit_error "failure to start agent" "Failed command:" "> $cmd"
}
info_progress "=> done"
else
info_progress "=> already running"
fi
node_id=$(cat /etc/overnode/id)
println "[$node_id] Node resumed"
}
reset_action() {
shift
ensure_no_args $@
ensure_root
ensure_docker
ensure_weave
tmp=$(weave status 2>&1) && weave_running=$? || weave_running=$?
if [ $weave_running -ne 0 ]
then
info_progress "Destroying agent ..."
if [ -f /etc/overnode/system.yml ]
then
cmd="docker run --rm \
-w /overnode-wdir \
-v /etc/overnode/system.yml:/overnode-wdir/docker-compose.yml \
-v /var/run/docker.sock:/var/run/docker.sock \
${image_compose} --compatibility down --remove-orphans --volumes"
run_cmd_wrap $cmd || {
exit_error "failure to reset agent" "Failed command:" "> $cmd"
}
rm /etc/overnode/system.yml
info_progress "=> done"
else
info_progress "=> already destroyed"
fi
info_progress "Destroying weave ..."
cmd="weave reset --force"
run_cmd_wrap $cmd >/dev/null 2>&1 || {
exit_error "failure to reset weave" "Failed command:" "> $cmd"
}
info_progress "=> already destroyed"
else
if [ $(weave ps | grep -v expose | grep -v 10.39.240 | wc -l) -ne 0 ]