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 $HOST resolves to the wrong IP address"
  66         echo or that traffic is not being routed to your server.
  67       fi
  68       echo
  69       echo Google: \"open ports YOUR CLOUD SERVICE\" for information for resolving this problem.
  70       echo
  71       echo You should probably answer \"n\" at the next prompt and disable Let\'s Encrypt.
  72       echo
  73       echo This test might not work for all situations,
  74       echo "so if you can access Discourse at http://$HOST, you might try anyway."
  75       sleep 3
  76       ;;
  77     2)
  78       echo "Continuing without port check."
  79       ;;
  80   esac
  81 }
  82
  83 ##
  84 ## Do we have docker?
  85 ##
  86 check_and_install_docker () {
  87   docker_path=`which docker.io || which docker`
  88   if [ -z $docker_path ]; then
  89     read  -p "Docker not installed. Enter to install from https://get.docker.com/ or Ctrl+C to exit"
  90     curl https://get.docker.com/ | sh
  91   fi
  92   docker_path=`which docker.io || which docker`
  93   if [ -z $docker_path ]; then
  94     echo Docker install failed. Quitting.
  95     exit
  96   fi
  97 }
  98
  99 ##
 100 ## What are we running on
 101 ##
 102 check_OS() {
 103   echo `uname -s`
 104 }
 105
 106 ##
 107 ## OS X available memory
 108 ##
 109 check_osx_memory() {
 110   echo `free -m | awk '/Mem:/ {print $2}'`
 111 }
 112
 113 ##
 114 ## Linux available memory
 115 ##
 116 check_linux_memory() {
 117   echo `free -g --si | awk ' /Mem:/  {print $2} '`
 118 }
 119
 120 ##
 121 ## Do we have enough memory and disk space for Discourse?
 122 ##
 123 check_disk_and_memory() {
 124
 125   os_type=$(check_OS)
 126   avail_mem=0
 127   if [ "$os_type" == "Darwin" ]; then
 128     avail_mem=$(check_osx_memory)
 129   else
 130     avail_mem=$(check_linux_memory)
 131   fi
 132
 133   if [ "$avail_mem" -lt 1 ]; then
 134     echo "WARNING: Discourse requires 1GB RAM to run. This system does not appear"
 135     echo "to have sufficient memory."
 136     echo
 137     echo "Your site may not work properly, or future upgrades of Discourse may not"
 138     echo "complete successfully."
 139     exit 1
 140   fi
 141
 142   if [ "$avail_mem" -le 2 ]; then
 143     total_swap=`free -g --si | awk ' /Swap:/  {print $2} '`
 144
 145     if [ "$total_swap" -lt 2 ]; then
 146       echo "WARNING: Discourse requires at least 2GB of swap when running with 2GB of RAM"
 147       echo "or less. This system does not appear to have sufficient swap space."
 148       echo
 149       echo "Without sufficient swap space, your site may not work properly, and future"
 150       echo "upgrades of Discourse may not complete successfully."
 151       echo
 152       echo "Ctrl+C to exit or wait 5 seconds to have a 2GB swapfile created."
 153       sleep 5
 154
 155       ##
 156       ## derived from https://meta.discourse.org/t/13880
 157       ##
 158       install -o root -g root -m 0600 /dev/null /swapfile
 159       fallocate -l 2G /swapfile
 160       mkswap /swapfile
 161       swapon /swapfile
 162       echo "/swapfile       swap    swap    auto      0       0" | tee -a /etc/fstab
 163       sysctl -w vm.swappiness=10
 164       echo 'vm.swappiness = 10' > /etc/sysctl.d/30-discourse-swap.conf
 165
 166       total_swap=`free -g --si | awk ' /Swap:/ {print $2} '`
 167       if [ "$total_swap" -lt 2 ]; then
 168         echo "Failed to create swap: are you root? Are you running on real hardware, or a fully virtualized server?"
 169         exit 1
 170       fi
 171
 172     fi
 173   fi
 174
 175
 176   free_disk="$(df /var | tail -n 1 | awk '{print $4}')"
 177   if [ "$free_disk" -lt 5000 ]; then
 178     echo "WARNING: Discourse requires at least 5GB free disk space. This system"
 179     echo "does not appear to have sufficient disk space."
 180     echo
 181     echo "Insufficient disk space may result in problems running your site, and"
 182     echo "may not even allow Discourse installation to complete successfully."
 183     echo
 184     echo "Please free up some space, or expand your disk, before continuing."
 185     echo
 186     echo "Run \`apt-get autoremove && apt-get autoclean\` to clean up unused"
 187     echo "packages and \`./launcher cleanup\` to remove stale Docker containers."
 188     exit 1
 189   fi
 190
 191 }
 192
 193
 194 ##
 195 ## If we have lots of RAM or lots of CPUs, bump up the defaults to scale better
 196 ##
 197 scale_ram_and_cpu() {
 198
 199   local changelog=/tmp/changelog.$PPID
 200   # grab info about total system ram and physical (NOT LOGICAL!) CPU cores
 201   avail_gb=0
 202   avail_cores=0
 203   os_type=$(check_OS)
 204   if [ "$os_type" == "Darwin" ]; then
 205     avail_gb=$(check_osx_memory)
 206     avail_cores=`sysctl hw.ncpu | awk '/hw.ncpu:/ {print $2}'`
 207   else
 208     avail_gb=$(check_linux_memory)
 209     avail_cores=$((`awk '/cpu cores/ {print $4;exit}' /proc/cpuinfo`*`sort /proc/cpuinfo | uniq | grep -c "physical id"`))
 210   fi
 211   echo "Found ${avail_gb}GB of memory and $avail_cores physical CPU cores"
 212
 213   # db_shared_buffers: 128MB for 1GB, 256MB for 2GB, or 256MB * GB, max 4096MB
 214   if [ "$avail_gb" -eq "1" ]
 215   then
 216     db_shared_buffers=128
 217   else
 218     if [ "$avail_gb" -eq "2" ]
 219     then
 220       db_shared_buffers=256
 221     else
 222       db_shared_buffers=$(( 256 * $avail_gb ))
 223     fi
 224   fi
 225   db_shared_buffers=$(( db_shared_buffers < 4096 ? db_shared_buffers : 4096 ))
 226
 227   sed -i -e "s/^  #\?db_shared_buffers:.*/  db_shared_buffers: \"${db_shared_buffers}MB\"/w $changelog" $data_file
 228   if [ -s $changelog ]
 229   then
 230     echo "setting db_shared_buffers = ${db_shared_buffers}MB"
 231     rm $changelog
 232   fi
 233
 234   # UNICORN_WORKERS: 2 * GB for 2GB or less, or 2 * CPU, max 8
 235   if [ "$avail_gb" -le "2" ]
 236   then
 237     unicorn_workers=$(( 2 * $avail_gb ))
 238   else
 239     unicorn_workers=$(( 2 * $avail_cores ))
 240   fi
 241   unicorn_workers=$(( unicorn_workers < 8 ? unicorn_workers : 8 ))
 242
 243   sed -i -e "s/^  #\?UNICORN_WORKERS:.*/  UNICORN_WORKERS: ${unicorn_workers}/w $changelog" $web_file
 244   if [ -s $changelog ]
 245   then
 246       echo "setting UNICORN_WORKERS = ${unicorn_workers}"
 247       rm $changelog
 248   fi
 249
 250   echo $data_file memory parameters updated.
 251 }
 252
 253
 254 ##
 255 ## standard http / https ports must not be occupied
 256 ##
 257 check_ports() {
 258     check_port "80"
 259     check_port "443"
 260     echo "Ports 80 and 443 are free for use"
 261 }
 262
 263
 264 ##
 265 ## check a port to see if it is already in use
 266 ##
 267 check_port() {
 268
 269   local valid=$(netstat -tln | awk '{print $4}' | grep ":${1}\$")
 270
 271   if [ -n "$valid" ]; then
 272     echo "Port ${1} appears to already be in use."
 273     echo
 274     echo "This will show you what command is using port ${1}"
 275     lsof -i tcp:${1} -s tcp:listen
 276     echo
 277     echo "If you are trying to run Discourse simultaneously with another web"
 278     echo "server like Apache or nginx, you will need to bind to a different port"
 279     echo
 280     echo "See https://meta.discourse.org/t/17247"
 281     echo
 282     echo "If you are reconfiguring an already-configured Discourse, use "
 283     echo
 284     echo "./launcher stop app"
 285     echo
 286     echo "to stop Discourse before you reconfigure it and try again."
 287     exit 1
 288   fi
 289 }
 290
 291 ##
 292 ## read a variable from the config file
 293 ##
 294 read_config() {
 295   config_line=`egrep "^  #?$1:" $web_file`
 296   read_config_result=`echo $config_line | awk  -F":" '{print $2}'`
 297   read_config_result=`echo $read_config_result | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
 298 }
 299
 300 read_default() {
 301   config_line=`egrep "^  #?$1:" samples/standalone.yml`
 302   read_default_result=`echo $config_line | awk  -F":" '{print $2}'`
 303   read_default_result=`echo $read_config_result | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
 304 }
 305
 306 ##
 307 ## prompt user for typical Discourse config file values
 308 ##
 309 ask_user_for_config() {
 310
 311   # NOTE: Defaults now come from standalone.yml
 312
 313   local changelog=/tmp/changelog.$PPID
 314   read_config "DISCOURSE_SMTP_ADDRESS"
 315   local smtp_address=$read_config_result
 316   # NOTE: if there are spaces between emails, this breaks, but a human should be paying attention
 317   read_config "DISCOURSE_DEVELOPER_EMAILS"
 318   local developer_emails=$read_config_result
 319   read_config "DISCOURSE_SMTP_PASSWORD"
 320   local smtp_password=$read_config_result
 321   read_config "DISCOURSE_SMTP_PORT"
 322   local smtp_port=$read_config_result
 323   read_config "DISCOURSE_SMTP_USER_NAME"
 324   local smtp_user_name=$read_config_result
 325   if [ "$smtp_password" = "pa$$word" ]
 326   then
 327       smtp_password = ""
 328   fi
 329   read_config "LETSENCRYPT_ACCOUNT_EMAIL"
 330   local letsencrypt_account_email=$read_config_result
 331   if [ -z $letsencrypt_account_email ]
 332   then
 333       letsencrypt_account_email="me@example.com"
 334   fi
 335   if [ "$letsencrypt_account_email" = "me@example.com" ]
 336   then
 337       local letsencrypt_status="ENTER to skip"
 338   else
 339     local letsencrypt_status="Enter 'OFF' to disable."
 340   fi
 341
 342   read_config "DISCOURSE_HOSTNAME"
 343   hostname=$read_config_result
 344
 345   local new_value=""
 346   local config_ok="n"
 347   local update_ok="y"
 348
 349   echo ""
 350
 351   while [[ "$config_ok" == "n" ]]
 352   do
 353     if [ ! -z "$hostname" ]
 354     then
 355       read -p "Hostname for your Discourse? [$hostname]: " new_value
 356       if [ ! -z "$new_value" ]
 357       then
 358           hostname="$new_value"
 359       fi
 360       if [[ $hostname =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]
 361       then
 362         echo
 363         echo "Discourse requires a DNS hostname. IP addresses are unsupported and will not work."
 364         echo
 365         hostname="discourse.example.com"
 366       fi
 367     fi
 368
 369     if [ ! -z "$developer_emails" ]
 370     then
 371       read -p "Email address for admin account(s)? [$developer_emails]: " new_value
 372       if [ ! -z "$new_value" ]
 373       then
 374           developer_emails="$new_value"
 375       fi
 376     fi
 377
 378     if [ ! -z "$smtp_address" ]
 379     then
 380       read -p "SMTP server address? [$smtp_address]: " new_value
 381       if [ ! -z "$new_value" ]
 382       then
 383         smtp_address="$new_value"
 384       fi
 385     fi
 386
 387     if [ ! -z "$smtp_port" ]
 388     then
 389       read -p "SMTP port? [$smtp_port]: " new_value
 390       if [ ! -z "$new_value" ]
 391       then
 392         smtp_port="$new_value"
 393       fi
 394     fi
 395
 396     ##
 397     ## automatically set correct user name based on common mail providers unless it's been set
 398     ##
 399     if [ "$smtp_user_name" == "user@example.com" ]
 400     then
 401       if [ "$smtp_address" == "smtp.sparkpostmail.com" ]
 402       then
 403         smtp_user_name="SMTP_Injection"
 404       fi
 405       if [ "$smtp_address" == "smtp.sendgrid.net" ]
 406       then
 407             smtp_user_name="apikey"
 408       fi
 409       if [ "$smtp_address" == "smtp.mailgun.org" ]
 410       then
 411             smtp_user_name="postmaster@$hostname"
 412       fi
 413     fi
 414
 415     if [ ! -z "$smtp_user_name" ]
 416     then
 417       read -p "SMTP user name? [$smtp_user_name]: " new_value
 418       if [ ! -z "$new_value" ]
 419       then
 420           smtp_user_name="$new_value"
 421       fi
 422     fi
 423
 424     read -p "SMTP password? [$smtp_password]: " new_value
 425     if [ ! -z "$new_value" ]
 426     then
 427         smtp_password="$new_value"
 428     fi
 429
 430     if [ ! -z $letsencrypt_account_email ]
 431     then
 432       read -p "Optional email address for setting up Let's Encrypt? ($letsencrypt_status) [$letsencrypt_account_email]: " new_value
 433       if [ ! -z "$new_value" ]
 434       then
 435           letsencrypt_account_email="$new_value"
 436           if [ "${new_value,,}" = "off" ]
 437           then
 438             letsencrypt_status="ENTER to skip"
 439           else
 440             letsencrypt_status="Enter 'OFF' to disable."
 441           fi
 442       fi
 443     fi
 444
 445     if [ "$letsencrypt_status" == "Enter 'OFF' to disable." ]
 446     then
 447        check_IP_match $hostname
 448     fi
 449
 450     echo -e "\nDoes this look right?\n"
 451     echo "Hostname      : $hostname"
 452     echo "Email         : $developer_emails"
 453     echo "SMTP address  : $smtp_address"
 454     echo "SMTP port     : $smtp_port"
 455     echo "SMTP username : $smtp_user_name"
 456     echo "SMTP password : $smtp_password"
 457
 458     if [ "$letsencrypt_status" == "Enter 'OFF' to disable." ]
 459     then
 460       echo "Let's Encrypt : $letsencrypt_account_email"
 461     fi
 462
 463
 464     echo ""
 465     read -p "ENTER to continue, 'n' to try again, Ctrl+C to exit: " config_ok
 466   done
 467
 468   sed -i -e "s/^  DISCOURSE_HOSTNAME:.*/  DISCOURSE_HOSTNAME: $hostname/w $changelog" $web_file
 469   if [ -s $changelog ]
 470   then
 471     rm $changelog
 472   else
 473     echo "DISCOURSE_HOSTNAME change failed."
 474     update_ok="n"
 475   fi
 476
 477   sed -i -e "s/^  DISCOURSE_DEVELOPER_EMAILS:.*/  DISCOURSE_DEVELOPER_EMAILS: \'$developer_emails\'/w $changelog" $web_file
 478   if [ -s $changelog ]
 479   then
 480     rm $changelog
 481   else
 482     echo "DISCOURSE_DEVELOPER_EMAILS change failed."
 483     update_ok="n"
 484   fi
 485
 486   sed -i -e "s/^  DISCOURSE_SMTP_ADDRESS:.*/  DISCOURSE_SMTP_ADDRESS: $smtp_address/w $changelog" $web_file
 487   if [ -s $changelog ]
 488   then
 489     rm $changelog
 490   else
 491     echo "DISCOURSE_SMTP_ADDRESS change failed."
 492     update_ok="n"
 493   fi
 494
 495   sed -i -e "s/^  #\?DISCOURSE_SMTP_PORT:.*/  DISCOURSE_SMTP_PORT: $smtp_port/w $changelog" $web_file
 496   if [ -s $changelog ]
 497   then
 498     rm $changelog
 499   else
 500     echo "DISCOURSE_SMTP_PORT change failed."
 501     update_ok="n"
 502   fi
 503
 504   sed -i -e "s/^  #\?DISCOURSE_SMTP_USER_NAME:.*/  DISCOURSE_SMTP_USER_NAME: $smtp_user_name/w $changelog" $web_file
 505   if [ -s $changelog ]
 506   then
 507     rm $changelog
 508   else
 509     echo "DISCOURSE_SMTP_USER_NAME change failed."
 510     update_ok="n"
 511   fi
 512
 513   if [[ "$smtp_password" == *"\""* ]]
 514   then
 515     SLASH="BROKEN"
 516     echo "========================================"
 517     echo "WARNING!!!"
 518     echo "Your password contains a quote (\")"
 519     echo "Your SMTP Password will not be set. You will need to edit app.yml to enter it."
 520     echo "========================================"
 521     update_ok="n"
 522   else
 523     SLASH="|"
 524     if [[ "$smtp_password" == *"$SLASH"* ]]
 525     then SLASH="+"
 526       if [[ "$smtp_password" == *"$SLASH"* ]]
 527       then
 528         SLASH="Q"
 529         if [[ "$smtp_password" == *"$SLASH"* ]]
 530         then
 531           SLASH="BROKEN"
 532           echo "========================================"
 533           echo "WARNING!!!"
 534           echo "Your password contains all available delimiters (+, |, and Q). "
 535           echo "Your SMTP Password will not be set. You will need to edit app.yml to enter it."
 536           echo "========================================"
 537           update_ok="n"
 538          fi
 539        fi
 540     fi
 541   fi
 542   if [[ "$SLASH" != "BROKEN" ]]
 543   then
 544     sed -i -e "s${SLASH}^  #\?DISCOURSE_SMTP_PASSWORD:.*${SLASH}  DISCOURSE_SMTP_PASSWORD: \"${smtp_password}\"${SLASH}w $changelog" $web_file
 545
 546     if [ -s $changelog ]
 547     then
 548       rm $changelog
 549     else
 550       echo "DISCOURSE_SMTP_PASSWORD change failed."
 551       update_ok="n"
 552     fi
 553   fi
 554   if [ "$letsencrypt_status" = "ENTER to skip" ]
 555   then
 556       local src='^  #\?- "templates\/web.ssl.template.yml"'
 557       local dst='  #\- "templates\/web.ssl.template.yml"'
 558       sed -i -e "s/$src/$dst/w $changelog" $web_file
 559       if [ ! -s $changelog ]
 560       then
 561         update_ok="n"
 562         echo "web.ssl.template.yml NOT DISABLED--Are you using a non-standard template?"
 563       fi
 564       local src='^  #\?- "templates\/web.letsencrypt.ssl.template.yml"'
 565       local dst='  #- "templates\/web.letsencrypt.ssl.template.yml"'
 566
 567       sed -i -e "s/$src/$dst/w $changelog" $web_file
 568       if [ ! -s $changelog ]
 569       then
 570         update_ok="n"
 571         echo "web.ssl.template.yml NOT DISABLED--Are you using a non-standard template?"
 572       fi
 573   else # enable let's encrypt
 574     echo "Let's Encrypt will be enabled for $letsencrypt_account_email"
 575       sed -i -e "s/^  #\?LETSENCRYPT_ACCOUNT_EMAIL:.*/  LETSENCRYPT_ACCOUNT_EMAIL: $letsencrypt_account_email/w $changelog" $web_file
 576       if [ -s $changelog ]
 577       then
 578         rm $changelog
 579       else
 580         echo "LETSENCRYPT_ACCOUNT_EMAIL change failed."
 581         update_ok="n"
 582       fi
 583       local src='^  #\?- "templates\/web.ssl.template.yml"'
 584       local dst='  \- "templates\/web.ssl.template.yml"'
 585       sed -i -e "s/$src/$dst/w $changelog" $web_file
 586       if [ -s $changelog ]
 587       then
 588           echo "web.ssl.template.yml enabled"
 589       else
 590         update_ok="n"
 591         echo "web.ssl.template.yml NOT ENABLED--was it on already?"
 592       fi
 593       local src='^  #\?- "templates\/web.letsencrypt.ssl.template.yml"'
 594       local dst='  - "templates\/web.letsencrypt.ssl.template.yml"'
 595
 596       sed -i -e "s/$src/$dst/w $changelog" $web_file
 597       if [ -s $changelog ]
 598       then
 599               echo "letsencrypt.ssl.template.yml enabled"
 600       else
 601         update_ok="n"
 602         echo "letsencrypt.ssl.template.yml NOT ENABLED -- was it on already?"
 603       fi
 604   fi
 605
 606   if [ "$update_ok" == "y" ]
 607   then
 608     echo -e "\nConfiguration file at $config_file updated successfully!\n"
 609   else
 610     echo -e "\nUnfortunately, there was an error changing $config_file\n"
 611     echo -d "This may happen if you have made unexpected changes."
 612     exit 1
 613   fi
 614 }
 615
 616 ##
 617 ## is our config file valid? Does it have the required fields set?
 618 ##
 619 validate_config() {
 620
 621   valid_config="y"
 622
 623   for x in DISCOURSE_SMTP_ADDRESS DISCOURSE_SMTP_USER_NAME DISCOURSE_SMTP_PASSWORD \
 624            DISCOURSE_DEVELOPER_EMAILS DISCOURSE_HOSTNAME
 625   do
 626     read_config $x
 627     local result=$read_config_result
 628     read_default $x
 629     local default=$read_default_result
 630
 631     if [ ! -z "$result" ]
 632     then
 633       if [[ "$config_line" = *"$default"* ]]
 634       then
 635         echo "$x left at incorrect default of $default"
 636         valid_config="n"
 637       fi
 638       config_val=`echo $config_line | awk '{print $2}'`
 639       if [ -z $config_val ]
 640       then
 641         echo "$x was not configured"
 642         valid_config="n"
 643       fi
 644     else
 645       echo "$x not present"
 646       valid_config="n"
 647     fi
 648   done
 649
 650   if [ "$valid_config" != "y" ]; then
 651     echo -e "\nSorry, these $web_file settings aren't valid -- can't continue!"
 652     echo "If you have unusual requirements, edit $web_file and then: "
 653     echo "./launcher bootstrap $app_name"
 654     exit 1
 655   fi
 656 }
 657
 658
 659 ##
 660 ## template file names
 661 ##
 662
 663 if [ "$1" == "2container" ]
 664 then
 665     app_name=web_only
 666     data_name=data
 667     web_template=samples/web_only.yml
 668     data_template=samples/data.yml
 669     web_file=containers/$app_name.yml
 670     data_file=containers/$data_name.yml
 671 else
 672   app_name=app
 673   data_name=app
 674   web_template=samples/standalone.yml
 675   data_template=""
 676   web_file=containers/$app_name.yml
 677   data_file=containers/$app_name.yml
 678 fi
 679     changelog=/tmp/changelog
 680
 681 ##
 682 ## Check requirements before creating a copy of a config file we won't edit
 683 ##
 684 check_root
 685 check_and_install_docker
 686 check_disk_and_memory
 687
 688 if [ -a "$web_file" ]
 689 then
 690   echo "The configuration file $web_file already exists!"
 691   echo
 692   echo ". . . reconfiguring . . ."
 693   echo
 694   echo
 695   DATE=`date +"%Y-%m-%d-%H%M%S"`
 696   BACKUP=$app_name.yml.$DATE.bak
 697   echo Saving old file as $BACKUP
 698   cp $web_file containers/$BACKUP
 699   echo "Stopping existing container in 5 seconds or Control-C to cancel."
 700   sleep 5
 701   ./launcher stop app
 702   echo
 703 else
 704   check_ports
 705   cp -v $web_template $web_file
 706   if [ "$data_name" == "data" ]
 707   then
 708       echo "--------------------------------------------------"
 709       echo "This two container setup is currently unsupported. Use at your own risk!"
 710       echo "--------------------------------------------------"
 711       DISCOURSE_DB_PASSWORD=`date +%s | sha256sum | base64 | head -c 20`
 712
 713      sed -i -e "s/DISCOURSE_DB_PASSWORD: SOME_SECRET/DISCOURSE_DB_PASSWORD: $DISCOURSE_DB_PASSWORD/w $changelog" $web_file
 714      if  [ -s $changelog ]
 715      then
 716          rm $changelog
 717      else
 718        echo "Problem changing DISCOURSE_DB_PASSWORD" in $web_file
 719      fi
 720
 721      cp -v $data_template $data_file
 722      quote=\'
 723      sed -i -e "s/password ${quote}SOME_SECRET${quote}/password '$DISCOURSE_DB_PASSWORD'/w $changelog" $data_file
 724      if  [ -s $changelog ]
 725      then
 726          rm $changelog
 727      else
 728        echo "Problem changing DISCOURSE_DB_PASSWORD" in $data_file
 729      fi
 730   fi
 731 fi
 732
 733 scale_ram_and_cpu
 734 ask_user_for_config
 735 validate_config
 736
 737 ##
 738 ## if we reach this point without exiting, OK to proceed
 739 ## rebuild won't fail if there's nothing to rebuild and does the restart
 740 ##
 741 echo "Updates successful. Rebuilding in 5 seconds."
 742 sleep 5 # Just a chance to ^C in case they were too fast on the draw
 743 if [ "$data_name" == "$app_name" ]
 744 then
 745     echo Building $app_name
 746     ./launcher rebuild $app_name
 747 else
 748     echo Building $data_name now . . .
 749     ./launcher rebuild $data_name
 750     echo Building $app_name now . . .
 751     ./launcher rebuild $app_name
 752 fi