4 echo "Usage: launcher COMMAND CONFIG [--skip-prereqs] [--docker-args STRING]"
6 echo " start: Start/initialize a container"
7 echo " stop: Stop a running container"
8 echo " restart: Restart a container"
9 echo " destroy: Stop and remove a container"
10 echo " enter: Open a shell to run commands inside the container"
11 echo " logs: View the Docker logs for a container"
12 echo " bootstrap: Bootstrap a container for the config based on a template"
13 echo " rebuild: Rebuild a container (destroy old, bootstrap, start new)"
14 echo " cleanup: Remove all containers that have stopped for > 24 hours"
17 echo " --skip-prereqs Don't check launcher prerequisites"
18 echo " --docker-args Extra arguments to pass when running docker"
19 echo " --skip-mac-address Don't assign a mac address"
27 while [ ${#} -gt 0 ]; do
47 # Docker doesn't like uppercase characters, spaces or special characters, catch it now before we build everything out and then find out
48 re
='[A-Z/ !@#$%^&*()+~`=]'
49 if [[ $config =~
$re ]];
52 echo "ERROR: Config name must not contain upper case characters, spaces or special characters. Correct config name and rerun $0."
59 docker_min_version
='1.8.0'
60 docker_rec_version
='1.8.0'
61 git_min_version
='1.8.0'
62 git_rec_version
='1.8.0'
64 config_file
=containers
/"$config".yml
65 cidbootstrap
=cids
/"$config"_bootstrap.cid
66 local_discourse
=local_discourse
67 image
=discourse
/discourse
:1.3.5
68 docker_path
=`which docker.io || which docker`
71 if [ "${SUPERVISED}" = "true" ]; then
72 restart_policy
="--restart=no"
74 attach_on_run
="-a stdout -a stderr"
79 if [ -n "$DOCKER_HOST" ]; then
80 docker_ip
=`sed -e 's/^tcp:\/\/\(.*\):.*$/\1/' <<< "$DOCKER_HOST"`
81 elif [ -x "$(which ip 2>/dev/null)" ]; then
82 docker_ip
=`ip addr show docker0 | \
84 awk '{ split($2,a,"/"); print a[1] }';`
86 docker_ip
=`ifconfig | \
87 grep -B1 "inet addr" | \
88 awk '{ if ( $1 == "inet" ) { print $2 } else if ( $2 == "Link" ) { printf "%s:" ,$1 } }' | \
90 awk -F: '{ print $3 }';`
96 IFS
=.
read -a ver_a
<<< "$1"
97 IFS
=.
read -a ver_b
<<< "$2"
99 while [[ -n $ver_a ]]; do
100 if (( ver_a
> ver_b
)); then
102 elif (( ver_b
> ver_a
)); then
106 ver_a
=("${ver_a[@]}")
108 ver_b
=("${ver_b[@]}")
111 return 1 # They are equal
116 echo "Docker is not installed, you will need to install Docker in order to run Launcher"
117 echo "See https://docs.docker.com/installation/"
123 if [ -z $docker_path ]; then
127 # 1. docker daemon running?
128 # we send stderr to /dev/null cause we don't care about warnings,
129 # it usually complains about swap which does not matter
130 test=`$docker_path info 2> /dev/null`
131 if [[ $?
-ne 0 ]] ; then
132 echo "Cannot connect to the docker daemon - verify it is running and you have access"
136 # 2. running aufs or btrfs
137 test=`$docker_path info 2> /dev/null | grep 'Driver: '`
138 if [[ "$test" =~
[aufs|btrfs|zfs|overlay
] ]] ; then : ; else
139 echo "Your Docker installation is not using a supported filesystem if we were to proceed you may have a broken install."
140 echo "aufs is the recommended filesystem you should be using (zfs/btrfs and overlay may work as well)"
141 echo "You can tell what filesystem you are using by running \"docker info\" and looking at the driver"
143 echo "If you wish to continue anyway using your existing unsupported filesystem, "
144 echo "read the source code of launcher and figure out how to bypass this."
148 # 3. running recommended docker version
149 test=($
($docker_path --version)) # Get docker version string
150 test=${test[2]//,/} # Get version alone and strip comma if exists
152 # At least minimum docker version
153 if compare_version
"${docker_min_version}" "${test}"; then
154 echo "ERROR: Docker version ${test} not supported, please upgrade to at least ${docker_min_version}, or recommended ${docker_rec_version}"
158 # Recommend newer docker version
159 if compare_version
"${docker_rec_version}" "${test}"; then
160 echo "WARNING: Docker version ${test} deprecated, recommend upgrade to ${docker_rec_version} or newer."
163 # 4. discourse docker image is downloaded
164 test=`$docker_path images | awk '{print $1 ":" $2 }' | grep "$image"`
166 if [ -z "$test" ]; then
168 echo "WARNING: We are about to start downloading the Discourse base image"
169 echo "This process may take anywhere between a few minutes to an hour, depending on your network speed"
171 echo "Please be patient"
175 # 5. running recommended git version
176 test=($
($git_path --version)) # Get git version string
177 test=${test[2]//,/} # Get version alone and strip comma if exists
179 # At least minimum version
180 if compare_version
"${git_min_version}" "${test}"; then
181 echo "ERROR: Git version ${test} not supported, please upgrade to at least ${git_min_version}, or recommended ${git_rec_version}"
185 # Recommend best version
186 if compare_version
"${git_rec_version}" "${test}"; then
187 echo "WARNING: Git version ${test} deprecated, recommend upgrade to ${git_rec_version} or newer."
190 # 6. able to attach stderr / out / tty
191 test=`$docker_path run $user_args -i --rm -a stdout -a stderr $image echo working`
192 if [[ "$test" =~
"working" ]] ; then : ; else
193 echo "Your Docker installation is not working correctly"
195 echo "See: https://meta.discourse.org/t/docker-error-on-bootstrap/13657/18?u=sam"
202 if [ -z "$SKIP_PREREQS" ] ; then
207 read -r -d '' env_ruby
<< 'RUBY'
210 input
= STDIN.readlines.
join
211 yaml
= YAML.load
(input
)
213 if host_run
= yaml
['host_run']
214 params
= yaml
['params'] ||
{}
215 host_run.each
do |run|
217 run
= run.gsub
("$#{k}", v
)
219 STDOUT.
write "#{run}--SEP--"
224 host_run
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e "$env_ruby"`
226 while [ "$host_run" ] ; do
227 iter
=${host_run%%--SEP--*}
229 echo "Host run: $iter"
232 host_run
="${host_run#*--SEP--}"
238 volumes
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
239 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['volumes'].map{|v| '-v ' << v['volume']['host'] << ':' << v['volume']['guest'] << ' '}.join"`
243 links
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
244 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['links'].map{|l| '--link ' << l['link']['name'] << ':' << l['link']['alias'] << ' '}.join"`
247 set_template_info
() {
249 templates
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
250 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['templates']"`
252 arrTemplates
=(${templates// / })
253 config_data
=$
(cat $config_file)
257 for template
in "${arrTemplates[@]}"
259 [ ! -z $template ] && {
260 input
="$input _FILE_SEPERATOR_ $(cat $template)"
264 # we always want our config file last so it takes priority
265 input
="$input _FILE_SEPERATOR_ $config_data"
267 read -r -d '' env_ruby
<< 'RUBY'
270 input
=STDIN.readlines.
join
271 # default to UTF-8 for the dbs sake
272 env
= {'LANG' => 'en_US.UTF-8'}
273 input.
split('_FILE_SEPERATOR_').each
do |yml|
276 env.merge
!(YAML.load
(yml
)['env'] ||
{})
277 rescue Psych
::SyntaxError
=> e
285 puts env.map
{|k
,v|
"-e\n#{k}=#{v}" }.
join("\n")
288 raw
=`exec echo "$input" | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e "$env_ruby"`
293 if [ "$i" == "*ERROR." ]; then
295 elif [ -n "$i" ]; then
300 if [ "$ok" -ne 1 ]; then
302 echo "YAML syntax error. Please check your containers/*.yml config files."
307 if [ -z $docker_path ]; then
311 [ "$command" == "cleanup" ] && {
313 echo "The following command will"
314 echo "- Delete all docker images for old containers"
315 echo "- Delete all stopped and orphan containers"
317 read -p "Are you sure (Y/n): " -n 1 -r && echo
318 if [[ $REPLY =~ ^
[Yy
]$ ||
! $REPLY ]]
320 space
=$
(df
/var
/lib
/docker |
awk '{ print $4 }' |
grep -v Available
)
321 echo "Starting Cleanup (bytes free $space)"
323 STATE_DIR
=.
/.gc-state
scripts
/docker-gc
325 space
=$
(df
/var
/lib
/docker |
awk '{ print $4 }' |
grep -v Available
)
326 echo "Finished Cleanup (bytes free $space)"
334 if [ -z "$command" -a -z "$config" ]; then
338 if [ ! "$command" == "setup" ]; then
339 if [[ ! -e $config_file ]]; then
340 echo "Config file was not found, ensure $config_file exists"
342 echo "Available configs ( `cd containers && ls -dm *.yml | tr -s '\n' ' ' | awk '{ gsub(/\.yml/, ""); print }'`)"
347 docker_version
=($
($docker_path --version))
348 docker_version
=${test[2]//,/}
349 restart_policy
=${restart_policy:---restart=always}
351 set_existing_container
(){
352 existing
=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
357 set_existing_container
359 if [ ! -z $existing ]
363 $docker_path stop
-t 10 $config
366 echo "$config was not started !"
372 run_image
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
373 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['run_image']"`
375 if [ -z "$run_image" ]; then
376 run_image
="$local_discourse/$config"
381 boot_command
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
382 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['boot_command']"`
384 if [ -z "$boot_command" ]; then
386 no_boot_command
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
387 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['no_boot_command']"`
389 if [ -z "$no_boot_command" ]; then
390 boot_command
="/sbin/boot"
397 existing
=`$docker_path ps | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
399 if [ ! -z $existing ]
401 echo "Nothing to do, your container has already started!"
405 existing
=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
406 if [ ! -z $existing ]
408 echo "starting up existing container"
411 $docker_path start
$config
418 ports
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
419 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['expose'].map{|p| \"-p #{p}\"}.join(' ')"`
421 docker_args
=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
422 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['docker_args']"`
430 # get hostname and settings from container configuration
431 for envar
in "${env[@]}"
433 if [[ $envar == DOCKER_USE_HOSTNAME
* ]] ||
[[ $envar == DISCOURSE_HOSTNAME
* ]]
435 # use as environment variable
441 hostname
=`hostname -s`
443 if [ "$DOCKER_USE_HOSTNAME" = "true" ]
445 hostname
=$DISCOURSE_HOSTNAME
447 hostname
=$hostname-$config
450 # we got to normalize so we only have allowed strings, this is more comprehensive but lets see how bash does first
451 # hostname=`$docker_path run $user_args --rm $image ruby -e 'print ARGV[0].gsub(/[^a-zA-Z-]/, "-")' $hostname`
452 # docker added more hostname rules
453 hostname
=${hostname//_/-}
456 if [ -z "$SKIP_MAC_ADDRESS" ] ; then
457 mac_address
="--mac-address $($docker_path run $user_args -i --rm -a stdout -a stderr $image /bin/sh -c "echo $hostname |
md5sum |
sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/'")"
461 $docker_path run
$user_args $links $attach_on_run $restart_policy "${env[@]}" -h "$hostname" \
462 -e DOCKER_HOST_IP
=$docker_ip --name $config -t $ports $volumes $mac_address $docker_args \
463 $run_image $boot_command
473 # I got no frigging clue what this does, ask Sam Saffron. It RUNS STUFF ON THE HOST I GUESS?
476 # Is the image available?
477 # If not, pull it here so the user is aware what's happening.
478 $docker_path history $image >/dev
/null
2>&1 ||
$docker_path pull
$image
482 base_image
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
483 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['base_image']"`
485 update_pups
=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
486 "require 'yaml'; puts YAML.load(STDIN.readlines.join)['update_pups']"`
488 if [[ ! X
"" = X
"$base_image" ]]; then
497 run_command
="cd /pups &&"
498 if [[ ! "false" = $update_pups ]]; then
499 run_command
="$run_command git pull &&"
501 run_command
="$run_command /pups/bin/pups --stdin"
506 (exec echo "$input" |
$docker_path run
$user_args $links "${env[@]}" -e DOCKER_HOST_IP
=$docker_ip --cidfile $cidbootstrap -i -a stdin
-a stdout
-a stderr
$volumes $image \
507 /bin
/bash
-c "$run_command") || ERR
=$?
510 # magic exit code that indicates a retry
511 if [[ "$ERR" == 77 ]]; then
512 $docker_path rm `cat $cidbootstrap`
515 elif [[ "$ERR" > 0 ]]; then
519 if [[ $FAILED = "TRUE" ]]; then
520 if [[ ! -z "$DEBUG" ]]; then
521 $docker_path commit
`cat $cidbootstrap` $local_discourse/$config-debug ||
echo 'FAILED TO COMMIT'
522 echo "** DEBUG ** Maintaining image for diagnostics $local_discourse/$config-debug"
525 $docker_path rm `cat $cidbootstrap`
527 echo "** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one"
533 $docker_path commit
`cat $cidbootstrap` $local_discourse/$config ||
echo 'FAILED TO COMMIT'
534 $docker_path rm `cat $cidbootstrap` && rm $cidbootstrap
542 echo "Successfully bootstrapped, to startup use ./launcher start $config"
547 exec $docker_path exec -it $config /bin
/bash
--login
557 $docker_path logs
$config
573 if [ "$(git symbolic-ref --short HEAD)" == "master" ]; then
574 echo "Ensuring launcher is up to date"
578 LOCAL
=$
(git rev-parse @
)
579 REMOTE
=$
(git rev-parse @
{u
})
580 BASE
=$
(git merge-base @ @
{u
})
582 if [ $LOCAL = $REMOTE ]; then
583 echo "Launcher is up-to-date"
585 elif [ $LOCAL = $BASE ]; then
586 echo "Updating Launcher"
587 git pull ||
(echo 'failed to update' && exit 1)
590 elif [ $REMOTE = $BASE ]; then
591 echo "Your version of Launcher is ahead of origin"
594 echo "Launcher has diverged source, this is only expected in Dev mode"
599 set_existing_container
601 if [ ! -z $existing ]
603 echo "Stopping old container"
606 $docker_path stop
-t 10 $config
612 if [ ! -z $existing ]
614 echo "Removing old container"
617 $docker_path rm $config
627 (set -x; $docker_path stop
-t 10 $config && $docker_path rm $config) ||
(echo "$config was not found" && exit 0)