discourse-setup

   1 #!/usr/bin/env bash
   2 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
   3 cd $DIR
   4
   5 ##
   6 ## Make sure only root can run our script
   7 ##
   8 check_root() {
   9   if [[ $EUID -ne 0 ]]; then
  10     echo "This script must be run as root. Please sudo or log in as root first." 1>&2
  11     exit 1
  12   fi
  13 }
  14
  15 ##
  16 ## Check whether a connection to HOSTNAME ($1) on PORT ($2) is possible
  17 ##
  18 connect_to_port () {
  19   HOST="$1"
  20   PORT="$2"
  21   VERIFY=$(date +%s | sha256sum | base64 | head -c 20)
  22   if ! [ -x "$(command -v nc)" ]; then
  23     echo "In order to check the connection to $HOST:$PORT we need to open a socket using netcat."
  24     echo However netcat is not installed on your system. You can continue without this check
  25     echo or abort the setup, install netcat and try again.
  26     while true; do
  27       read -p "Would you like to continue without this check? [yn] " yn
  28       case $yn in
  29       [Yy]*) return 2 ;;
  30       [Nn]*) exit ;;
  31       *) echo "Please answer y or n." ;;
  32       esac
  33     done
  34   else
  35     echo -e "HTTP/1.1 200 OK\n\n $VERIFY" | nc -w 4 -l -p $PORT >/dev/null 2>&1 &
  36     if curl --proto =http -s $HOST:$PORT --connect-timeout 3 | grep $VERIFY >/dev/null 2>&1; then
  37       return 0
  38     else
  39       curl --proto =http -s localhost:$PORT >/dev/null 2>&1
  40       return 1
  41     fi
  42   fi
  43 }
  44
  45 check_IP_match() {
  46   HOST="$1"
  47   echo
  48   echo Checking your domain name . . .
  49   connect_to_port $HOST 443; ec=$?
  50   case $ec in
  51     0)
  52       echo "Connection to $HOST succeeded."
  53       ;;
  54     1)
  55       echo "WARNING:: This server does not appear to be accessible at $HOST:443."
  56       echo
  57       if connect_to_port $HOST 80; then
  58         echo A connection to port 80 succeeds, however.
  59         echo This suggests that your DNS settings are correct,
  60         echo but something is keeping traffic to port 443 from getting to your server.
  61         echo Check your networking configuration to see that connections to port 443 are allowed.
  62       else
  63         echo "A connection to http://$HOST (port 80) also fails."
  64         echo
  65         echo "This suggests that $HOST resolves to the wrong IP address"
  66         echo or that traffic is not being routed to your server.
  67       fi
  68       echo
  69       echo Google: \"open ports YOUR CLOUD SERVICE\" for information for resolving this problem.
  70       echo
  71       echo If you want to proceed anyway, you will need to
  72       echo edit the containers/app.yml file manually.
  73       exit 1
  74       ;;
  75     2)
  76       echo "Continuing without port check."
  77       ;;
  78   esac
  79 }
  80
  81 ##
  82 ## Do we have docker?
  83 ##
  84 check_and_install_docker () {
  85   docker_path=`which docker.io || which docker`
  86   if [ -z $docker_path ]; then
  87     read  -p "Docker not installed. Enter to install from https://get.docker.com/ or Ctrl+C to exit"
  88     curl https://get.docker.com/ | sh
  89   fi
  90   docker_path=`which docker.io || which docker`
  91   if [ -z $docker_path ]; then
  92     echo Docker install failed. Quitting.
  93     exit
  94   fi
  95 }
  96
  97 ##
  98 ## What are we running on
  99 ##
 100 check_OS() {
 101   echo `uname -s`
 102 }
 103
 104 ##
 105 ## OS X available memory
 106 ##
 107 check_osx_memory() {
 108   echo `free -m | awk '/Mem:/ {print $2}'`
 109 }
 110
 111 ##
 112 ## Linux available memory
 113 ##
 114 check_linux_memory() {
 115   ## some VMs report just under 1GB of RAM, so
 116   ## make an exception and allow those with more
 117   ## than 989MB
 118   mem=`free -m --si | awk ' /Mem:/ {print $2}'`
 119   if [ "$mem" -ge 990 -a "$mem" -lt 1000 ]; then
 120     echo 1
 121   else
 122     echo `free -g --si | awk ' /Mem:/  {print $2} '`
 123   fi
 124 }
 125
 126 ##
 127 ## Do we have enough memory and disk space for Discourse?
 128 ##
 129 check_disk_and_memory() {
 130
 131   os_type=$(check_OS)
 132   avail_mem=0
 133   if [ "$os_type" == "Darwin" ]; then
 134     avail_mem=$(check_osx_memory)
 135   else
 136     avail_mem=$(check_linux_memory)
 137   fi
 138
 139   if [ "$avail_mem" -lt 1 ]; then
 140     echo "WARNING: Discourse requires 1GB RAM to run. This system does not appear"
 141     echo "to have sufficient memory."
 142     echo
 143     echo "Your site may not work properly, or future upgrades of Discourse may not"
 144     echo "complete successfully."
 145     exit 1
 146   fi
 147
 148   if [ "$avail_mem" -le 2 ]; then
 149     total_swap=`free -g --si | awk ' /Swap:/  {print $2} '`
 150
 151     if [ "$total_swap" -lt 2 ]; then
 152       echo "WARNING: Discourse requires at least 2GB of swap when running with 2GB of RAM"
 153       echo "or less. This system does not appear to have sufficient swap space."
 154       echo
 155       echo "Without sufficient swap space, your site may not work properly, and future"
 156       echo "upgrades of Discourse may not complete successfully."
 157       echo
 158       echo "Ctrl+C to exit or wait 5 seconds to have a 2GB swapfile created."
 159       sleep 5
 160
 161       ##
 162       ## derived from https://meta.discourse.org/t/13880
 163       ##
 164       install -o root -g root -m 0600 /dev/null /swapfile
 165       fallocate -l 2G /swapfile
 166       mkswap /swapfile
 167       swapon /swapfile
 168       echo "/swapfile       swap    swap    auto      0       0" | tee -a /etc/fstab
 169       sysctl -w vm.swappiness=10
 170       echo 'vm.swappiness = 10' > /etc/sysctl.d/30-discourse-swap.conf
 171
 172       total_swap=`free -g --si | awk ' /Swap:/ {print $2} '`
 173       if [ "$total_swap" -lt 2 ]; then
 174         echo "Failed to create swap: are you root? Are you running on real hardware, or a fully virtualized server?"
 175         exit 1
 176       fi
 177
 178     fi
 179   fi
 180
 181
 182   free_disk="$(df /var | tail -n 1 | awk '{print $4}')"
 183   if [ "$free_disk" -lt 5000 ]; then
 184     echo "WARNING: Discourse requires at least 5GB free disk space. This system"
 185     echo "does not appear to have sufficient disk space."
 186     echo
 187     echo "Insufficient disk space may result in problems running your site, and"
 188     echo "may not even allow Discourse installation to complete successfully."
 189     echo
 190     echo "Please free up some space, or expand your disk, before continuing."
 191     echo
 192     echo "Run \`apt-get autoremove && apt-get autoclean\` to clean up unused"
 193     echo "packages and \`./launcher cleanup\` to remove stale Docker containers."
 194     exit 1
 195   fi
 196
 197 }
 198
 199
 200 ##
 201 ## If we have lots of RAM or lots of CPUs, bump up the defaults to scale better
 202 ##
 203 scale_ram_and_cpu() {
 204
 205   local changelog=/tmp/changelog.$PPID
 206   # grab info about total system ram and physical (NOT LOGICAL!) CPU cores
 207   avail_gb=0
 208   avail_cores=0
 209   os_type=$(check_OS)
 210   if [ "$os_type" == "Darwin" ]; then
 211     avail_gb=$(check_osx_memory)
 212     avail_cores=`sysctl hw.ncpu | awk '/hw.ncpu:/ {print $2}'`
 213   else
 214     avail_gb=$(check_linux_memory)
 215     avail_cores=$((`awk '/cpu cores/ {print $4;exit}' /proc/cpuinfo`*`sort /proc/cpuinfo | uniq | grep -c "physical id"`))
 216   fi
 217   echo "Found ${avail_gb}GB of memory and $avail_cores physical CPU cores"
 218
 219   # db_shared_buffers: 128MB for 1GB, 256MB for 2GB, or 256MB * GB, max 4096MB
 220   if [ "$avail_gb" -eq "1" ]
 221   then
 222     db_shared_buffers=128
 223   else
 224     if [ "$avail_gb" -eq "2" ]
 225     then
 226       db_shared_buffers=256
 227     else
 228       db_shared_buffers=$(( 256 * $avail_gb ))
 229     fi
 230   fi
 231   db_shared_buffers=$(( db_shared_buffers < 4096 ? db_shared_buffers : 4096 ))
 232
 233   sed -i -e "s/^  #\?db_shared_buffers:.*/  db_shared_buffers: \"${db_shared_buffers}MB\"/w $changelog" $data_file
 234   if [ -s $changelog ]
 235   then
 236     echo "setting db_shared_buffers = ${db_shared_buffers}MB"
 237     rm $changelog
 238   fi
 239
 240   # UNICORN_WORKERS: 2 * GB for 2GB or less, or 2 * CPU, max 8
 241   if [ "$avail_gb" -le "2" ]
 242   then
 243     unicorn_workers=$(( 2 * $avail_gb ))
 244   else
 245     unicorn_workers=$(( 2 * $avail_cores ))
 246   fi
 247   unicorn_workers=$(( unicorn_workers < 8 ? unicorn_workers : 8 ))
 248
 249   sed -i -e "s/^  #\?UNICORN_WORKERS:.*/  UNICORN_WORKERS: ${unicorn_workers}/w $changelog" $web_file
 250   if [ -s $changelog ]
 251   then
 252       echo "setting UNICORN_WORKERS = ${unicorn_workers}"
 253       rm $changelog
 254   fi
 255
 256   echo $data_file memory parameters updated.
 257 }
 258
 259
 260 ##
 261 ## standard http / https ports must not be occupied
 262 ##
 263 check_ports() {
 264     check_port "80"
 265     check_port "443"
 266     echo "Ports 80 and 443 are free for use"
 267 }
 268
 269
 270 ##
 271 ## check a port to see if it is already in use
 272 ##
 273 check_port() {
 274
 275   local valid=$(netstat -tln | awk '{print $4}' | grep ":${1}\$")
 276
 277   if [ -n "$valid" ]; then
 278     echo "Port ${1} appears to already be in use."
 279     echo
 280     echo "This will show you what command is using port ${1}"
 281     lsof -i tcp:${1} -s tcp:listen
 282     echo
 283     echo "If you are trying to run Discourse simultaneously with another web"
 284     echo "server like Apache or nginx, you will need to bind to a different port"
 285     echo
 286     echo "See https://meta.discourse.org/t/17247"
 287     echo
 288     echo "If you are reconfiguring an already-configured Discourse, use "
 289     echo
 290     echo "./launcher stop app"
 291     echo
 292     echo "to stop Discourse before you reconfigure it and try again."
 293     exit 1
 294   fi
 295 }
 296
 297 ##
 298 ## read a variable from the config file
 299 ##
 300 read_config() {
 301   config_line=`egrep "^  #?$1:" $web_file`
 302   read_config_result=`echo $config_line | awk  -F":" '{print $2}'`
 303   read_config_result=`echo $read_config_result | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
 304 }
 305
 306 read_default() {
 307   config_line=`egrep "^  #?$1:" samples/standalone.yml`
 308   read_default_result=`echo $config_line | awk  -F":" '{print $2}'`
 309   read_default_result=`echo $read_config_result | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
 310 }
 311
 312 ##
 313 ## prompt user for typical Discourse config file values
 314 ##
 315 ask_user_for_config() {
 316
 317   # NOTE: Defaults now come from standalone.yml
 318
 319   local changelog=/tmp/changelog.$PPID
 320   read_config "DISCOURSE_SMTP_ADDRESS"
 321   local smtp_address=$read_config_result
 322   # NOTE: if there are spaces between emails, this breaks, but a human should be paying attention
 323   read_config "DISCOURSE_DEVELOPER_EMAILS"
 324   local developer_emails=$read_config_result
 325   read_config "DISCOURSE_SMTP_PASSWORD"
 326   local smtp_password=$read_config_result
 327   read_config "DISCOURSE_SMTP_PORT"
 328   local smtp_port=$read_config_result
 329   read_config "DISCOURSE_SMTP_USER_NAME"
 330   local smtp_user_name=$read_config_result
 331   if [ "$smtp_password" = "pa$$word" ]
 332   then
 333       smtp_password = ""
 334   fi
 335   read_config "LETSENCRYPT_ACCOUNT_EMAIL"
 336   local letsencrypt_account_email=$read_config_result
 337   if [ -z $letsencrypt_account_email ]
 338   then
 339       letsencrypt_account_email="me@example.com"
 340   fi
 341   if [ "$letsencrypt_account_email" = "me@example.com" ]
 342   then
 343       local letsencrypt_status="ENTER to skip"
 344   else
 345     local letsencrypt_status="Enter 'OFF' to disable."
 346   fi
 347
 348   read_config "DISCOURSE_HOSTNAME"
 349   hostname=$read_config_result
 350
 351   local new_value=""
 352   local config_ok="n"
 353   local update_ok="y"
 354
 355   echo ""
 356
 357   while [[ "$config_ok" == "n" ]]
 358   do
 359     if [ ! -z "$hostname" ]
 360     then
 361       read -p "Hostname for your Discourse? [$hostname]: " new_value
 362       if [ ! -z "$new_value" ]
 363       then
 364           hostname="$new_value"
 365       fi
 366       if [[ $hostname =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]
 367       then
 368         echo
 369         echo "Discourse requires a DNS hostname. IP addresses are unsupported and will not work."
 370         echo
 371         hostname="discourse.example.com"
 372       fi
 373     fi
 374
 375     check_IP_match $hostname
 376
 377     if [ ! -z "$developer_emails" ]
 378     then
 379       read -p "Email address for admin account(s)? [$developer_emails]: " new_value
 380       if [ ! -z "$new_value" ]
 381       then
 382           developer_emails="$new_value"
 383       fi
 384     fi
 385
 386     if [ ! -z "$smtp_address" ]
 387     then
 388       read -p "SMTP server address? [$smtp_address]: " new_value
 389       if [ ! -z "$new_value" ]
 390       then
 391         smtp_address="$new_value"
 392       fi
 393     fi
 394
 395     if [ ! -z "$smtp_port" ]
 396     then
 397       read -p "SMTP port? [$smtp_port]: " new_value
 398       if [ ! -z "$new_value" ]
 399       then
 400         smtp_port="$new_value"
 401       fi
 402     fi
 403
 404     ##
 405     ## automatically set correct user name based on common mail providers unless it's been set
 406     ##
 407     if [ "$smtp_user_name" == "user@example.com" ]
 408     then
 409       if [ "$smtp_address" == "smtp.sparkpostmail.com" ]
 410       then
 411         smtp_user_name="SMTP_Injection"
 412       fi
 413       if [ "$smtp_address" == "smtp.sendgrid.net" ]
 414       then
 415             smtp_user_name="apikey"
 416       fi
 417       if [ "$smtp_address" == "smtp.mailgun.org" ]
 418       then
 419             smtp_user_name="postmaster@$hostname"
 420       fi
 421     fi
 422
 423     if [ ! -z "$smtp_user_name" ]
 424     then
 425       read -p "SMTP user name? [$smtp_user_name]: " new_value
 426       if [ ! -z "$new_value" ]
 427       then
 428           smtp_user_name="$new_value"
 429       fi
 430     fi
 431
 432     read -p "SMTP password? [$smtp_password]: " new_value
 433     if [ ! -z "$new_value" ]
 434     then
 435         smtp_password="$new_value"
 436     fi
 437
 438     if [ ! -z $letsencrypt_account_email ]
 439     then
 440       read -p "Optional email address for Let's Encrypt warnings? ($letsencrypt_status) [$letsencrypt_account_email]: " new_value
 441       if [ ! -z "$new_value" ]
 442       then
 443           letsencrypt_account_email="$new_value"
 444           if [ "${new_value,,}" = "off" ]
 445           then
 446             letsencrypt_status="ENTER to skip"
 447           else
 448             letsencrypt_status="Enter 'OFF' to disable."
 449           fi
 450       fi
 451     fi
 452
 453     echo -e "\nDoes this look right?\n"
 454     echo "Hostname      : $hostname"
 455     echo "Email         : $developer_emails"
 456     echo "SMTP address  : $smtp_address"
 457     echo "SMTP port     : $smtp_port"
 458     echo "SMTP username : $smtp_user_name"
 459     echo "SMTP password : $smtp_password"
 460
 461     if [ "$letsencrypt_status" == "Enter 'OFF' to disable." ]
 462     then
 463       echo "Let's Encrypt : $letsencrypt_account_email"
 464     fi
 465
 466
 467     echo ""
 468     read -p "ENTER to continue, 'n' to try again, Ctrl+C to exit: " config_ok
 469   done
 470
 471   sed -i -e "s/^  DISCOURSE_HOSTNAME:.*/  DISCOURSE_HOSTNAME: $hostname/w $changelog" $web_file
 472   if [ -s $changelog ]
 473   then
 474     rm $changelog
 475   else
 476     echo "DISCOURSE_HOSTNAME change failed."
 477     update_ok="n"
 478   fi
 479
 480   sed -i -e "s/^  DISCOURSE_DEVELOPER_EMAILS:.*/  DISCOURSE_DEVELOPER_EMAILS: \'$developer_emails\'/w $changelog" $web_file
 481   if [ -s $changelog ]
 482   then
 483     rm $changelog
 484   else
 485     echo "DISCOURSE_DEVELOPER_EMAILS change failed."
 486     update_ok="n"
 487   fi
 488
 489   sed -i -e "s/^  DISCOURSE_SMTP_ADDRESS:.*/  DISCOURSE_SMTP_ADDRESS: $smtp_address/w $changelog" $web_file
 490   if [ -s $changelog ]
 491   then
 492     rm $changelog
 493   else
 494     echo "DISCOURSE_SMTP_ADDRESS change failed."
 495     update_ok="n"
 496   fi
 497
 498   sed -i -e "s/^  #\?DISCOURSE_SMTP_PORT:.*/  DISCOURSE_SMTP_PORT: $smtp_port/w $changelog" $web_file
 499   if [ -s $changelog ]
 500   then
 501     rm $changelog
 502   else
 503     echo "DISCOURSE_SMTP_PORT change failed."
 504     update_ok="n"
 505   fi
 506
 507   sed -i -e "s/^  #\?DISCOURSE_SMTP_USER_NAME:.*/  DISCOURSE_SMTP_USER_NAME: $smtp_user_name/w $changelog" $web_file
 508   if [ -s $changelog ]
 509   then
 510     rm $changelog
 511   else
 512     echo "DISCOURSE_SMTP_USER_NAME change failed."
 513     update_ok="n"
 514   fi
 515
 516   if [[ "$smtp_password" == *"\""* ]]
 517   then
 518     SLASH="BROKEN"
 519     echo "========================================"
 520     echo "WARNING!!!"
 521     echo "Your password contains a quote (\")"
 522     echo "Your SMTP Password will not be set. You will need to edit app.yml to enter it."
 523     echo "========================================"
 524     update_ok="n"
 525   else
 526     SLASH="|"
 527     if [[ "$smtp_password" == *"$SLASH"* ]]
 528     then SLASH="+"
 529       if [[ "$smtp_password" == *"$SLASH"* ]]
 530       then
 531         SLASH="Q"
 532         if [[ "$smtp_password" == *"$SLASH"* ]]
 533         then
 534           SLASH="BROKEN"
 535           echo "========================================"
 536           echo "WARNING!!!"
 537           echo "Your password contains all available delimiters (+, |, and Q). "
 538           echo "Your SMTP Password will not be set. You will need to edit app.yml to enter it."
 539           echo "========================================"
 540           update_ok="n"
 541          fi
 542        fi
 543     fi
 544   fi
 545   if [[ "$SLASH" != "BROKEN" ]]
 546   then
 547     sed -i -e "s${SLASH}^  #\?DISCOURSE_SMTP_PASSWORD:.*${SLASH}  DISCOURSE_SMTP_PASSWORD: \"${smtp_password}\"${SLASH}w $changelog" $web_file
 548
 549     if [ -s $changelog ]
 550     then
 551       rm $changelog
 552     else
 553       echo "DISCOURSE_SMTP_PASSWORD change failed."
 554       update_ok="n"
 555     fi
 556   fi
 557
 558   echo "Enabling Let's Encrypt"
 559     sed -i -e "s/^  #\?LETSENCRYPT_ACCOUNT_EMAIL:.*/  LETSENCRYPT_ACCOUNT_EMAIL: $letsencrypt_account_email/w $changelog" $web_file
 560     if [ -s $changelog ]
 561     then
 562       rm $changelog
 563     else
 564       echo "LETSENCRYPT_ACCOUNT_EMAIL change failed."
 565       update_ok="n"
 566     fi
 567     local src='^  #\?- "templates\/web.ssl.template.yml"'
 568     local dst='  \- "templates\/web.ssl.template.yml"'
 569     sed -i -e "s/$src/$dst/w $changelog" $web_file
 570     if [ -s $changelog ]
 571     then
 572   echo "web.ssl.template.yml enabled"
 573     else
 574       update_ok="n"
 575       echo "web.ssl.template.yml NOT ENABLED--was it on already?"
 576     fi
 577     local src='^  #\?- "templates\/web.letsencrypt.ssl.template.yml"'
 578     local dst='  - "templates\/web.letsencrypt.ssl.template.yml"'
 579
 580     sed -i -e "s/$src/$dst/w $changelog" $web_file
 581     if [ -s $changelog ]
 582     then
 583       echo "letsencrypt.ssl.template.yml enabled"
 584     else
 585       update_ok="n"
 586       echo "letsencrypt.ssl.template.yml NOT ENABLED -- was it on already?"
 587     fi
 588
 589   if [ "$update_ok" == "y" ]
 590   then
 591     echo -e "\nConfiguration file at $config_file updated successfully!\n"
 592   else
 593     echo -e "\nUnfortunately, there was an error changing $config_file\n"
 594     echo -d "This may happen if you have made unexpected changes."
 595     exit 1
 596   fi
 597 }
 598
 599 ##
 600 ## is our config file valid? Does it have the required fields set?
 601 ##
 602 validate_config() {
 603
 604   valid_config="y"
 605
 606   for x in DISCOURSE_SMTP_ADDRESS DISCOURSE_SMTP_USER_NAME DISCOURSE_SMTP_PASSWORD \
 607            DISCOURSE_DEVELOPER_EMAILS DISCOURSE_HOSTNAME
 608   do
 609     read_config $x
 610     local result=$read_config_result
 611     read_default $x
 612     local default=$read_default_result
 613
 614     if [ ! -z "$result" ]
 615     then
 616       if [[ "$config_line" = *"$default"* ]]
 617       then
 618         echo "$x left at incorrect default of $default"
 619         valid_config="n"
 620       fi
 621       config_val=`echo $config_line | awk '{print $2}'`
 622       if [ -z $config_val ]
 623       then
 624         echo "$x was not configured"
 625         valid_config="n"
 626       fi
 627     else
 628       echo "$x not present"
 629       valid_config="n"
 630     fi
 631   done
 632
 633   if [ "$valid_config" != "y" ]; then
 634     echo -e "\nSorry, these $web_file settings aren't valid -- can't continue!"
 635     echo "If you have unusual requirements, edit $web_file and then: "
 636     echo "./launcher bootstrap $app_name"
 637     exit 1
 638   fi
 639 }
 640
 641
 642 ##
 643 ## template file names
 644 ##
 645
 646 if [ "$1" == "2container" ]
 647 then
 648     app_name=web_only
 649     data_name=data
 650     web_template=samples/web_only.yml
 651     data_template=samples/data.yml
 652     web_file=containers/$app_name.yml
 653     data_file=containers/$data_name.yml
 654 else
 655   app_name=app
 656   data_name=app
 657   web_template=samples/standalone.yml
 658   data_template=""
 659   web_file=containers/$app_name.yml
 660   data_file=containers/$app_name.yml
 661 fi
 662     changelog=/tmp/changelog
 663
 664 ##
 665 ## Check requirements before creating a copy of a config file we won't edit
 666 ##
 667 check_root
 668 check_and_install_docker
 669 check_disk_and_memory
 670
 671 if [ -a "$web_file" ]
 672 then
 673   echo "The configuration file $web_file already exists!"
 674   echo
 675   echo ". . . reconfiguring . . ."
 676   echo
 677   echo
 678   DATE=`date +"%Y-%m-%d-%H%M%S"`
 679   BACKUP=$app_name.yml.$DATE.bak
 680   echo Saving old file as $BACKUP
 681   cp $web_file containers/$BACKUP
 682   echo "Stopping existing container in 5 seconds or Control-C to cancel."
 683   sleep 5
 684   ./launcher stop app
 685   echo
 686 else
 687   check_ports
 688   cp -v $web_template $web_file
 689   if [ "$data_name" == "data" ]
 690   then
 691       echo "--------------------------------------------------"
 692       echo "This two container setup is currently unsupported. Use at your own risk!"
 693       echo "--------------------------------------------------"
 694       DISCOURSE_DB_PASSWORD=`date +%s | sha256sum | base64 | head -c 20`
 695
 696      sed -i -e "s/DISCOURSE_DB_PASSWORD: SOME_SECRET/DISCOURSE_DB_PASSWORD: $DISCOURSE_DB_PASSWORD/w $changelog" $web_file
 697      if  [ -s $changelog ]
 698      then
 699          rm $changelog
 700      else
 701        echo "Problem changing DISCOURSE_DB_PASSWORD" in $web_file
 702      fi
 703
 704      cp -v $data_template $data_file
 705      quote=\'
 706      sed -i -e "s/password ${quote}SOME_SECRET${quote}/password '$DISCOURSE_DB_PASSWORD'/w $changelog" $data_file
 707      if  [ -s $changelog ]
 708      then
 709          rm $changelog
 710      else
 711        echo "Problem changing DISCOURSE_DB_PASSWORD" in $data_file
 712      fi
 713   fi
 714 fi
 715
 716 scale_ram_and_cpu
 717 ask_user_for_config
 718 validate_config
 719
 720 ##
 721 ## if we reach this point without exiting, OK to proceed
 722 ## rebuild won't fail if there's nothing to rebuild and does the restart
 723 ##
 724 echo "Updates successful. Rebuilding in 5 seconds."
 725 sleep 5 # Just a chance to ^C in case they were too fast on the draw
 726 if [ "$data_name" == "$app_name" ]
 727 then
 728     echo Building $app_name
 729     ./launcher rebuild $app_name
 730 else
 731     echo Building $data_name now . . .
 732     ./launcher rebuild $data_name
 733     echo Building $app_name now . . .
 734     ./launcher rebuild $app_name
 735 fi