7 # Docker doesn't like uppercase characters, spaces or special characters, catch it now before we build everything out and then find out
8 re
='[A-Z/ !@#$%^&*()+~`=]'
9 if [[ $config =~
$re ]];
12 echo "ERROR: Config name must not contain upper case characters, spaces or special characters. Correct config name and rerun $0."
19 docker_min_version
='1.6.0'
20 docker_rec_version
='1.6.0'
22 config_file
=containers
/"$config".yml
23 cidbootstrap
=cids
/"$config"_bootstrap.cid
24 local_discourse
=local_discourse
25 image
=discourse
/discourse
:1.0.17
26 docker_path
=`which docker.io || which docker`
29 if [ "${SUPERVISED}" = "true" ]; then
30 restart_policy
="--restart=no"
32 attach_on_run
="-a stdout -a stderr"
37 if [ -n "$DOCKER_HOST" ]; then
38 docker_ip
=`sed -e 's/^tcp:\/\/\(.*\):.*$/\1/' <<< "$DOCKER_HOST"`
39 elif [ -x "$(which ip 2>/dev/null)" ]; then
40 docker_ip
=`ip addr show docker0 | \
42 awk '{ split($2,a,"/"); print a[1] }';`
44 docker_ip
=`ifconfig | \
45 grep -B1 "inet addr" | \
46 awk '{ if ( $1 == "inet" ) { print $2 } else if ( $2 == "Link" ) { printf "%s:" ,$1 } }' | \
48 awk -F: '{ print $3 }';`
53 echo "Usage: launcher COMMAND CONFIG [--skip-prereqs]"
55 echo " start: Start/initialize a container"
56 echo " stop: Stop a running container"
57 echo " restart: Restart a container"
58 echo " destroy: Stop and remove a container"
59 echo " enter: Use nsenter to enter a container"
60 echo " ssh: Start a bash shell in a running container"
61 echo " logs: Docker logs for container"
62 echo " bootstrap: Bootstrap a container for the config based on a template"
63 echo " rebuild: Rebuild a container (destroy old, bootstrap, start new)"
64 echo " cleanup: Remove all containers that have stopped for > 24 hours"
67 echo " --skip-prereqs Don't check prerequisites or resource requirements"
68 echo " --docker-args Extra arguments to pass when running docker"
75 IFS
=.
read -a ver_a
<<< "$1"
76 IFS
=.
read -a ver_b
<<< "$2"
78 while [[ -n $ver_a ]]; do
79 if (( ver_a
> ver_b
)); then
81 elif (( ver_b
> ver_a
)); then
90 return 1 # They are equal
95 # 1. docker daemon running?
96 # we send stderr to /dev/null cause we don't care about warnings,
97 # it usually complains about swap which does not matter
98 test=`$docker_path info 2> /dev/null`
100 if [[ $?
-ne 0 ]] ; then
101 echo "Cannot connect to the docker daemon - verify it is running and you have access"
105 # 2. running aufs or btrfs
106 test=`$docker_path info 2> /dev/null | grep 'Driver: '`
107 if [[ "$test" =~
[aufs|btrfs|zfs|overlay
] ]] ; then : ; else
108 echo "Your Docker installation is not using a supported filesystem if we were to proceed you may have a broken install."
109 echo "aufs is the recommended filesystem you should be using (zfs/btrfs and overlay may work as well)"
110 echo "You can tell what filesystem you are using by running \"docker info\" and looking at the driver"
112 echo "If you wish to continue anyway using your existing unsupported filesystem"
113 echo "read the source code of launcher and figure out how to bypass this."
117 # 3. running recommended docker version
118 test=($
($docker_path --version)) # Get docker version string
119 test=${test[2]//,/} # Get version alone and strip comma if exists
121 [[ "$test" =~
"0.12.0" ]] && echo "You are running a broken version of Docker, please upgrade ASAP. See: https://meta.discourse.org/t/the-installation-stopped-in-the-middle/16311/ for more details." && exit 1
123 # At least minimum version
124 if compare_version
"${docker_min_version}" "${test}"; then
125 echo "ERROR: Docker version ${test} not supported, please upgrade to at least ${docker_min_version}, or recommended ${docker_rec_version}"
129 # Recommend best version
130 if compare_version
"${docker_rec_version}" "${test}"; then
131 echo "WARNING: Docker version ${test} deprecated, recommend upgrade to ${docker_rec_version} or newer."
134 # 4. discourse docker image is downloaded
135 test=`$docker_path images | awk '{print $1 ":" $2 }' | grep "$image"`
137 if [ -z "$test" ]; then
139 echo "WARNING: We are about to start downloading the Discourse base image"
140 echo "This process may take anywhere between a few minutes to an hour, depending on your network speed"
142 echo "Please be patient"
147 # 5. able to attach stderr / out / tty
148 test=`$docker_path run $user_args -i --rm -a stdout -a stderr $image echo working`
149 if [[ "$test" =~
"working" ]] ; then : ; else
150 echo "Your Docker installation is not working correctly"
152 echo "See: https://meta.discourse.org/t/docker-error-on-bootstrap/13657/18?u=sam"
161 avail_mem
="$(LANG=C free -m | grep '^Mem:' | awk '{print $2}')"
162 if [ "$avail_mem" -lt 900 ]; then
163 resources
="insufficient"
164 echo "WARNING: You do not appear to have sufficient memory to run Discourse."
166 echo "Your system may not work properly, or future upgrades of Discourse may"
167 echo "not complete successfully."
169 echo "See https://github.com/discourse/discourse/blob/master/docs/INSTALL-cloud.md#create-new-cloud-server"
170 elif [ "$avail_mem" -lt 1800 ]; then
171 total_swap
="$(LANG=C free -m | grep ^Swap: | awk '{print $2}')"
172 if [ "$total_swap" -lt 1000 ]; then
173 resources
="insufficient"
174 echo "WARNING: You must have at least 1GB of swap when running with less"
175 echo "than 2GB of RAM."
177 echo "Your system may not work properly, or future upgrades of Discourse may"
178 echo "not complete successfully."
180 echo "See https://github.com/discourse/discourse/blob/master/docs/INSTALL-cloud.md#set-up-swap-if-needed"
185 free_disk
="$(df /var | tail -n 1 | awk '{print $4}')"
186 if [ "$free_disk" -lt 5000 ]; then
187 resources
="insufficient"
188 echo "WARNING: You must have at least 5GB of *free* disk space to run Discourse."
190 echo "Insufficient disk space may result in problems running your site, and may"
191 echo "not even allow Discourse installation to complete successfully."
193 echo "Please free up some space, or expand your disk, before continuing."
197 if [ -t 0 ] && [ "$resources" != "ok" ]; then
199 read -p "Press ENTER to continue, or Ctrl-C to exit and give your system more resources"
204 local valid
=$
(netstat
-tln |
awk '{print $4}' |
grep ":${1}\$")
206 if [ -n "$valid" ]; then
207 echo "Launcher has detected that port ${1} is in use."
209 echo "If you are trying to run Discourse simultaneously with another web server like Apache or nginx, you will need to bind to a different port."
210 echo "See https://meta.discourse.org/t/17247 for help."
215 if [ "$opt" != "--skip-prereqs" ] ; then
219 if [ "$opt" == "--docker-args" ] ; then
226 local ${ssh_key_locations}
228 ~
/.ssh
/id_ed25519.pub
232 ~core
/.ssh
/authorized_keys
236 for keyfile
in "${ssh_key_locations[@]}"; do
237 if [[ -e ${keyfile} ]] ; then
238 ssh_pub_key
="$(cat ${keyfile})"
249 echo "Docker is not installed, you will need to install Docker in order to run Discourse"
250 echo "Please visit https://docs.docker.com/installation/ for instructions on how to do this for your system"
252 echo "If you are running Ubuntu Trusty or later, you can try the following:"
255 echo "sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D"
256 echo "sudo sh -c \"echo deb https://apt.dockerproject.org/repo ubuntu-$(lsb_release -sc) main > /etc/apt/sources.list.d/docker.list\""
257 echo "sudo apt-get update"
258 echo "sudo apt-get install docker-engine"
264 read -r -d '' env_ruby
<< 'RUBY'
267 input
= STDIN.readlines.
join
268 yaml
= YAML.load
(input
)
270 if host_run
= yaml
['host_run']
271 params
= yaml
['params'] ||
{}
272 host_run.each
do |run|
274 run
= run.gsub
("$#{k}", v
)
276 STDOUT.
write "#{run}--SEP--"
281 host_run
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e "$env_ruby"`
283 while [ "$host_run" ] ; do
284 iter
=${host_run%%--SEP--*}
286 echo "Host run: $iter"
289 host_run
="${host_run#*--SEP--}"
295 volumes
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
296 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['volumes'].map{|v| '-v ' << v['volume']['host'] << ':' << v['volume']['guest'] << ' '}.join"`
300 links
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
301 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['links'].map{|l| '--link ' << l['link']['name'] << ':' << l['link']['alias'] << ' '}.join"`
304 set_template_info
() {
306 templates
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
307 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['templates']"`
310 arrTemplates
=(${templates// / })
311 config_data
=$
(cat $config_file)
316 for template
in "${arrTemplates[@]}"
318 [ ! -z $template ] && {
319 input
="$input _FILE_SEPERATOR_ $(cat $template)"
323 # we always want our config file last so it takes priority
324 input
="$input _FILE_SEPERATOR_ $config_data"
326 read -r -d '' env_ruby
<< 'RUBY'
329 input
=STDIN.readlines.
join
330 # default to UTF-8 for the dbs sake
331 env
= {'LANG' => 'en_US.UTF-8'}
332 input.
split('_FILE_SEPERATOR_').each
do |yml|
335 env.merge
!(YAML.load
(yml
)['env'] ||
{})
336 rescue Psych
::SyntaxError
=> e
344 puts env.map
{|k
,v|
"-e\n#{k}=#{v}" }.
join("\n")
347 raw
=`exec echo "$input" | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e "$env_ruby"`
352 if [ "$i" == "*ERROR." ]; then
354 elif [ -n "$i" ]; then
359 if [ "$ok" -ne 1 ]; then
361 echo "YAML syntax error. Please check your /var/discourse/containers/*.yml config files."
366 [ -z $docker_path ] && {
370 [ "$command" == "cleanup" ] && {
372 echo "The following command will"
373 echo "- Delete all docker images for old containers"
374 echo "- Delete all stopped and orphan containers"
376 read -p "Are you sure (Y/n): " -n 1 -r && echo
377 if [[ $REPLY =~ ^
[Yy
]$ ||
! $REPLY ]]
379 space
=$
(df
/var
/lib
/docker |
awk '{ print $4 }' |
grep -v Available
)
380 echo "Starting Cleanup (bytes free $space)"
382 STATE_DIR
=.
/.gc-state
scripts
/docker-gc
384 space
=$
(df
/var
/lib
/docker |
awk '{ print $4 }' |
grep -v Available
)
385 echo "Finished Cleanup (bytes free $space)"
397 if [ ! -e $config_file ]
399 echo "Config file was not found, ensure $config_file exists"
401 echo "Available configs ( `cd containers && ls -dm *.yml | tr -s '\n' ' ' | awk '{ gsub(/\.yml/, ""); print }'`)"
406 docker_version
=($
($docker_path --version))
407 docker_version
=${test[2]//,/}
409 if compare_version
"1.2.0" "$docker_version"; then
410 echo "We recommend you upgrade docker, the version you are running has no restart policies, on reboot your container may not start up"
413 restart_policy
=${restart_policy:---restart=always}
416 set_existing_container
(){
417 existing
=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
422 set_existing_container
424 if [ ! -z $existing ]
428 $docker_path stop
-t 10 $config
431 echo "$config was not started !"
437 run_image
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
438 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['run_image']"`
440 if [ -z "$run_image" ]; then
441 run_image
="$local_discourse/$config"
446 boot_command
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
447 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['boot_command']"`
449 if [ -z "$boot_command" ]; then
451 no_boot_command
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
452 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['no_boot_command']"`
454 if [ -z "$no_boot_command" ]; then
455 boot_command
="/sbin/boot"
462 existing
=`$docker_path ps | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
464 if [ ! -z $existing ]
466 echo "Nothing to do, your container has already started!"
470 existing
=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
471 if [ ! -z $existing ]
473 echo "starting up existing container"
476 $docker_path start
$config
482 ports
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
483 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['expose'].map{|p| \"-p #{p}\"}.join(' ')"`
485 IFS
='-p ' read -a array
<<< "$ports"
486 for element
in "${array[@]}"
488 IFS
=':' read -a args
<<< "$element"
489 if [ "${#args[@]}" == "2" ]; then
490 check_ports
"${args[0]}"
491 elif [ "${#args[@]}" == "3" ]; then
492 check_ports
"${args[1]}"
496 docker_args
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
497 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['docker_args']"`
508 $docker_path run
$user_args $links $attach_on_run $restart_policy "${env[@]}" -h "$hostname-$config" \
509 -e DOCKER_HOST_IP
=$docker_ip --name $config -t $ports $volumes $docker_args $run_image $boot_command
518 if [ "$opt" != "--skip-prereqs" ] ; then
526 # Is the image available?
527 # If not, pull it here so the user is aware what's happening.
528 $docker_path history $image >/dev
/null
2>&1 ||
$docker_path pull
$image
532 base_image
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
533 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['base_image']"`
535 update_pups
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
536 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['update_pups']"`
538 if [[ ! X
"" = X
"$base_image" ]]; then
547 run_command
="cd /pups &&"
548 if [[ ! "false" = $update_pups ]]; then
549 run_command
="$run_command git pull &&"
551 run_command
="$run_command /pups/bin/pups --stdin"
555 env
=("${env[@]}" "-e" "SSH_PUB_KEY=$ssh_pub_key")
557 (exec echo "$input" |
$docker_path run
$user_args $links "${env[@]}" -e DOCKER_HOST_IP
=$docker_ip --cidfile $cidbootstrap -i -a stdin
-a stdout
-a stderr
$volumes $image \
558 /bin
/bash
-c "$run_command") \
559 ||
($docker_path rm `cat $cidbootstrap` && rm $cidbootstrap)
561 [ ! -e $cidbootstrap ] && echo "** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one" && exit 1
565 $docker_path commit
`cat $cidbootstrap` $local_discourse/$config ||
echo 'FAILED TO COMMIT'
566 $docker_path rm `cat $cidbootstrap` && rm $cidbootstrap
574 echo "Successfully bootstrapped, to startup use ./launcher start $config"
579 exec $docker_path exec -it $config /bin
/bash
--login
583 existing
=`$docker_path ps | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
585 if [[ ! -z $existing ]]; then
586 address
="`$docker_path port $config 22`"
587 split=(${address//:/ })
588 exec ssh -o StrictHostKeyChecking
=no root@
${split[0]} -p ${split[1]}
590 echo "$config is not running!"
602 $docker_path logs
$config
618 if [ "$(git symbolic-ref --short HEAD)" == "master" ]; then
619 echo "Ensuring discourse docker is up to date"
623 LOCAL
=$
(git rev-parse @
)
624 REMOTE
=$
(git rev-parse @
{u
})
625 BASE
=$
(git merge-base @ @
{u
})
627 if [ $LOCAL = $REMOTE ]; then
628 echo "Discourse Docker is up-to-date"
630 elif [ $LOCAL = $BASE ]; then
631 echo "Updating Discourse Docker"
632 git pull ||
(echo 'failed to update' && exit 1)
635 elif [ $REMOTE = $BASE ]; then
636 echo "Your version of Discourse Docker is ahead of origin"
639 echo "Discourse Docker has diverged source, this is only expected in Dev mode"
644 set_existing_container
646 if [ ! -z $existing ]
648 echo "Stopping old container"
651 $docker_path stop
-t 10 $config
657 if [ ! -z $existing ]
659 echo "Removing old container"
662 $docker_path rm $config
672 (set -x; $docker_path stop
-t 10 $config && $docker_path rm $config) ||
(echo "$config was not found" && exit 0)