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: Port 443 of computer does not appear to be accessible using hostname:  $HOST."
  56       if connect_to_port $HOST 80; then
  57         echo
  58         echo SUCCESS: A connection to port 80 succeeds!
  59         echo This suggests that your DNS settings are correct,
  60         echo but something is keeping traffic to port 443 from getting to your server.
  61         echo Check your networking configuration to see that connections to port 443 are allowed.
  62       else
  63         echo "WARNING: Connection to http://$HOST (port 80) also fails."
  64         echo
  65         echo "This suggests that $HOST resolves to some IP address that does not reach this "
  66         echo machine where you are installing discourse.
  67       fi
  68       echo
  69       echo "The first thing to do is confirm that $HOST resolves to the IP address of this server."
  70       echo You usually do this at the same place you purchased the domain.
  71       echo
  72       echo If you are sure that the IP address resolves correctly, it could be a firewall issue.
  73       echo A web search for  \"open ports YOUR CLOUD SERVICE\" might help.
  74       echo
  75       echo This tool is designed only for the most standard installations. If you cannot resolve
  76       echo the issue above, you will need to edit containers/app.yml yourself and then type
  77       echo
  78       echo                   ./launcher rebuild app
  79       echo
  80       exit 1
  81       ;;
  82     2)
  83       echo "Continuing without port check."
  84       ;;
  85   esac
  86 }
  87
  88 ##
  89 ## Do we have docker?
  90 ##
  91 check_and_install_docker () {
  92   docker_path=`which docker.io || which docker`
  93   if [ -z $docker_path ]; then
  94     read  -p "Docker not installed. Enter to install from https://get.docker.com/ or Ctrl+C to exit"
  95     curl https://get.docker.com/ | sh
  96   fi
  97   docker_path=`which docker.io || which docker`
  98   if [ -z $docker_path ]; then
  99     echo Docker install failed. Quitting.
 100     exit
 101   fi
 102 }
 103
 104 ##
 105 ## What are we running on
 106 ##
 107 check_OS() {
 108   echo `uname -s`
 109 }
 110
 111 ##
 112 ## OS X available memory
 113 ##
 114 check_osx_memory() {
 115   echo `free -m | awk '/Mem:/ {print $2}'`
 116 }
 117
 118 ##
 119 ## Linux available memory
 120 ##
 121 check_linux_memory() {
 122   ## some VMs report just under 1GB of RAM, so
 123   ## make an exception and allow those with more
 124   ## than 989MB
 125   mem=`free -m --si | awk ' /Mem:/ {print $2}'`
 126   if [ "$mem" -ge 990 -a "$mem" -lt 1000 ]; then
 127     echo 1
 128   else
 129     echo `free -g --si | awk ' /Mem:/  {print $2} '`
 130   fi
 131 }
 132
 133 ##
 134 ## Do we have enough memory and disk space for Discourse?
 135 ##
 136 check_disk_and_memory() {
 137
 138   os_type=$(check_OS)
 139   avail_mem=0
 140   if [ "$os_type" == "Darwin" ]; then
 141     avail_mem=$(check_osx_memory)
 142   else
 143     avail_mem=$(check_linux_memory)
 144   fi
 145
 146   if [ "$avail_mem" -lt 1 ]; then
 147     echo "WARNING: Discourse requires 1GB RAM to run. This system does not appear"
 148     echo "to have sufficient memory."
 149     echo
 150     echo "Your site may not work properly, or future upgrades of Discourse may not"
 151     echo "complete successfully."
 152     exit 1
 153   fi
 154
 155   if [ "$avail_mem" -le 2 ]; then
 156     total_swap=`free -g --si | awk ' /Swap:/  {print $2} '`
 157
 158     if [ "$total_swap" -lt 2 ]; then
 159       echo "WARNING: Discourse requires at least 2GB of swap when running with 2GB of RAM"
 160       echo "or less. This system does not appear to have sufficient swap space."
 161       echo
 162       echo "Without sufficient swap space, your site may not work properly, and future"
 163       echo "upgrades of Discourse may not complete successfully."
 164       echo
 165       echo "Ctrl+C to exit or wait 5 seconds to have a 2GB swapfile created."
 166       sleep 5
 167
 168       ##
 169       ## derived from https://meta.discourse.org/t/13880
 170       ##
 171       install -o root -g root -m 0600 /dev/null /swapfile
 172       fallocate -l 2G /swapfile
 173       mkswap /swapfile
 174       swapon /swapfile
 175       echo "/swapfile       swap    swap    auto      0       0" | tee -a /etc/fstab
 176       sysctl -w vm.swappiness=10
 177       echo 'vm.swappiness = 10' > /etc/sysctl.d/30-discourse-swap.conf
 178
 179       total_swap=`free -g --si | awk ' /Swap:/ {print $2} '`
 180       if [ "$total_swap" -lt 2 ]; then
 181         echo "Failed to create swap: are you root? Are you running on real hardware, or a fully virtualized server?"
 182         exit 1
 183       fi
 184
 185     fi
 186   fi
 187
 188
 189   free_disk="$(df /var | tail -n 1 | awk '{print $4}')"
 190   if [ "$free_disk" -lt 5000 ]; then
 191     echo "WARNING: Discourse requires at least 5GB free disk space. This system"
 192     echo "does not appear to have sufficient disk space."
 193     echo
 194     echo "Insufficient disk space may result in problems running your site, and"
 195     echo "may not even allow Discourse installation to complete successfully."
 196     echo
 197     echo "Please free up some space, or expand your disk, before continuing."
 198     echo
 199     echo "Run \`apt-get autoremove && apt-get autoclean\` to clean up unused"
 200     echo "packages and \`./launcher cleanup\` to remove stale Docker containers."
 201     exit 1
 202   fi
 203
 204 }
 205
 206
 207 ##
 208 ## If we have lots of RAM or lots of CPUs, bump up the defaults to scale better
 209 ##
 210 scale_ram_and_cpu() {
 211
 212   local changelog=/tmp/changelog.$PPID
 213   # grab info about total system ram and physical (NOT LOGICAL!) CPU cores
 214   avail_gb=0
 215   avail_cores=0
 216   os_type=$(check_OS)
 217   if [ "$os_type" == "Darwin" ]; then
 218     avail_gb=$(check_osx_memory)
 219     avail_cores=`sysctl hw.ncpu | awk '/hw.ncpu:/ {print $2}'`
 220   else
 221     avail_gb=$(check_linux_memory)
 222     avail_cores=$((`awk '/cpu cores/ {print $4;exit}' /proc/cpuinfo`*`sort /proc/cpuinfo | uniq | grep -c "physical id"`))
 223   fi
 224   echo "Found ${avail_gb}GB of memory and $avail_cores physical CPU cores"
 225
 226   # db_shared_buffers: 128MB for 1GB, 256MB for 2GB, or 256MB * GB, max 4096MB
 227   if [ "$avail_gb" -eq "1" ]
 228   then
 229     db_shared_buffers=128
 230   else
 231     if [ "$avail_gb" -eq "2" ]
 232     then
 233       db_shared_buffers=256
 234     else
 235       db_shared_buffers=$(( 256 * $avail_gb ))
 236     fi
 237   fi
 238   db_shared_buffers=$(( db_shared_buffers < 4096 ? db_shared_buffers : 4096 ))
 239
 240   sed -i -e "s/^  #\?db_shared_buffers:.*/  db_shared_buffers: \"${db_shared_buffers}MB\"/w $changelog" $data_file
 241   if [ -s $changelog ]
 242   then
 243     echo "setting db_shared_buffers = ${db_shared_buffers}MB"
 244     rm $changelog
 245   fi
 246
 247   # UNICORN_WORKERS: 2 * GB for 2GB or less, or 2 * CPU, max 8
 248   if [ "$avail_gb" -le "2" ]
 249   then
 250     unicorn_workers=$(( 2 * $avail_gb ))
 251   else
 252     unicorn_workers=$(( 2 * $avail_cores ))
 253   fi
 254   unicorn_workers=$(( unicorn_workers < 8 ? unicorn_workers : 8 ))
 255
 256   sed -i -e "s/^  #\?UNICORN_WORKERS:.*/  UNICORN_WORKERS: ${unicorn_workers}/w $changelog" $web_file
 257   if [ -s $changelog ]
 258   then
 259       echo "setting UNICORN_WORKERS = ${unicorn_workers}"
 260       rm $changelog
 261   fi
 262
 263   echo $data_file memory parameters updated.
 264 }
 265
 266
 267 ##
 268 ## standard http / https ports must not be occupied
 269 ##
 270 check_ports() {
 271     check_port "80"
 272     check_port "443"
 273     echo "Ports 80 and 443 are free for use"
 274 }
 275
 276
 277 ##
 278 ## check a port to see if it is already in use
 279 ##
 280 check_port() {
 281
 282   local valid=$(netstat -tln | awk '{print $4}' | grep ":${1}\$")
 283
 284   if [ -n "$valid" ]; then
 285     echo "Port ${1} appears to already be in use."
 286     echo
 287     echo "This will show you what command is using port ${1}"
 288     lsof -i tcp:${1} -s tcp:listen
 289     echo
 290     echo "If you are trying to run Discourse simultaneously with another web"
 291     echo "server like Apache or nginx, you will need to bind to a different port"
 292     echo
 293     echo "See https://meta.discourse.org/t/17247"
 294     echo
 295     echo "If you are reconfiguring an already-configured Discourse, use "
 296     echo
 297     echo "./launcher stop app"
 298     echo
 299     echo "to stop Discourse before you reconfigure it and try again."
 300     exit 1
 301   fi
 302 }
 303
 304 ##
 305 ## read a variable from the config file
 306 ##
 307 read_config() {
 308   config_line=`egrep "^  #?$1:" $web_file`
 309   read_config_result=`echo $config_line | awk  -F":" '{print $2}'`
 310   read_config_result=`echo $read_config_result | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
 311 }
 312
 313 read_default() {
 314   config_line=`egrep "^  #?$1:" samples/standalone.yml`
 315   read_default_result=`echo $config_line | awk  -F":" '{print $2}'`
 316   read_default_result=`echo $read_config_result | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
 317 }
 318
 319 assert_maxmind_license_key() {
 320   echo "Checking if $web_file has MAXMIND placeholder."
 321   if  ! grep DISCOURSE_MAXMIND_LICENSE_KEY $web_file
 322   then
 323     echo "Adding MAXMIND placeholder to $web_file"
 324     sed -i -e 's/LETSENCRYPT_ACCOUNT_EMAIL/a\ \ #DISCOURSE_MAXMIND_LICENSE_KEY: 1234567890123456' $web_file
 325   fi
 326 }
 327
 328 ##
 329 ## prompt user for typical Discourse config file values
 330 ##
 331 ask_user_for_config() {
 332
 333   # NOTE: Defaults now come from standalone.yml
 334
 335   local changelog=/tmp/changelog.$PPID
 336   read_config "DISCOURSE_SMTP_ADDRESS"
 337   local smtp_address=$read_config_result
 338   # NOTE: if there are spaces between emails, this breaks, but a human should be paying attention
 339   read_config "DISCOURSE_DEVELOPER_EMAILS"
 340   local developer_emails=$read_config_result
 341   read_config "DISCOURSE_SMTP_PASSWORD"
 342   local smtp_password=$read_config_result
 343   read_config "DISCOURSE_SMTP_PORT"
 344   local smtp_port=$read_config_result
 345   read_config "DISCOURSE_SMTP_USER_NAME"
 346   local smtp_user_name=$read_config_result
 347   if [ "$smtp_password" = "pa$$word" ]
 348   then
 349       smtp_password = ""
 350   fi
 351   read_config "LETSENCRYPT_ACCOUNT_EMAIL"
 352   local letsencrypt_account_email=$read_config_result
 353   if [ -z $letsencrypt_account_email ]
 354   then
 355       letsencrypt_account_email="me@example.com"
 356   fi
 357   if [ "$letsencrypt_account_email" = "me@example.com" ]
 358   then
 359       local letsencrypt_status="ENTER to skip"
 360   else
 361     local letsencrypt_status="Enter 'OFF' to disable."
 362   fi
 363
 364   read_config "DISCOURSE_MAXMIND_LICENSE_KEY"
 365   local maxmind_license_key=$read_config_result
 366   if [ -z $maxmind_license_key ]
 367   then
 368       maxmind_license_key="1234567890123456"
 369   fi
 370   if [ "$maxmind_license_key" == "1234567890123456" ]
 371   then
 372       local maxmind_status="ENTER to continue without MAXMIND GeoLite2 geolocation database"
 373   fi
 374
 375   read_config "DISCOURSE_HOSTNAME"
 376   hostname=$read_config_result
 377
 378   local new_value=""
 379   local config_ok="n"
 380   local update_ok="y"
 381
 382   echo ""
 383
 384   while [[ "$config_ok" == "n" ]]
 385   do
 386     if [ ! -z "$hostname" ]
 387     then
 388       read -p "Hostname for your Discourse? [$hostname]: " new_value
 389       if [ ! -z "$new_value" ]
 390       then
 391           hostname="$new_value"
 392       fi
 393       if [[ $hostname =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]
 394       then
 395         echo
 396         echo "Discourse requires a DNS hostname. IP addresses are unsupported and will not work."
 397         echo
 398         hostname="discourse.example.com"
 399       fi
 400     fi
 401
 402     check_IP_match $hostname
 403
 404     if [ ! -z "$developer_emails" ]
 405     then
 406       local email_valid="n"
 407       until [ "$email_valid" == "y" ]
 408       do
 409         read -p "Email address for admin account(s)? [$developer_emails]: " new_value
 410         if [ ! -z "$new_value" ]
 411         then
 412           if [[ ${#new_value} -ge 7 && $new_value == *@* ]]
 413           then
 414             developer_emails="$new_value"
 415             email_valid="y"
 416           else
 417             echo
 418             echo "[Error] Invalid email address"
 419             echo
 420           fi
 421         else
 422           email_valid="y"
 423         fi
 424       done
 425     fi
 426
 427     if [ ! -z "$smtp_address" ]
 428     then
 429       read -p "SMTP server address? [$smtp_address]: " new_value
 430       if [ ! -z "$new_value" ]
 431       then
 432         smtp_address="$new_value"
 433       fi
 434     fi
 435
 436     if [ ! -z "$smtp_port" ]
 437     then
 438       read -p "SMTP port? [$smtp_port]: " new_value
 439       if [ ! -z "$new_value" ]
 440       then
 441         smtp_port="$new_value"
 442       fi
 443     fi
 444
 445     ##
 446     ## automatically set correct user name based on common mail providers unless it's been set
 447     ##
 448     if [ "$smtp_user_name" == "user@example.com" ]
 449     then
 450       if [ "$smtp_address" == "smtp.sparkpostmail.com" ]
 451       then
 452         smtp_user_name="SMTP_Injection"
 453       fi
 454       if [ "$smtp_address" == "smtp.sendgrid.net" ]
 455       then
 456             smtp_user_name="apikey"
 457       fi
 458       if [ "$smtp_address" == "smtp.mailgun.org" ]
 459       then
 460             smtp_user_name="postmaster@$hostname"
 461       fi
 462     fi
 463
 464     if [ ! -z "$smtp_user_name" ]
 465     then
 466       read -p "SMTP user name? [$smtp_user_name]: " new_value
 467       if [ ! -z "$new_value" ]
 468       then
 469           smtp_user_name="$new_value"
 470       fi
 471     fi
 472
 473     read -p "SMTP password? [$smtp_password]: " new_value
 474     if [ ! -z "$new_value" ]
 475     then
 476         smtp_password="$new_value"
 477     fi
 478
 479     if [ ! -z $letsencrypt_account_email ]
 480     then
 481       read -p "Optional email address for Let's Encrypt warnings? ($letsencrypt_status) [$letsencrypt_account_email]: " new_value
 482       if [ ! -z "$new_value" ]
 483       then
 484           letsencrypt_account_email="$new_value"
 485           if [ "${new_value,,}" = "off" ]
 486           then
 487             letsencrypt_status="ENTER to skip"
 488           else
 489             letsencrypt_status="Enter 'OFF' to disable."
 490           fi
 491       fi
 492     fi
 493
 494     read_config "DISCOURSE_MAXMIND_LICENSE_KEY"
 495     local maxmind_license_key=$read_config_result
 496     read -p "Optional Maxmind License key ($maxmind_status) [$maxmind_license_key]: " new_value
 497     if [ ! -z "$new_value" ]
 498     then
 499         maxmind_license_key="$new_value"
 500     fi
 501
 502     echo -e "\nDoes this look right?\n"
 503     echo "Hostname      : $hostname"
 504     echo "Email         : $developer_emails"
 505     echo "SMTP address  : $smtp_address"
 506     echo "SMTP port     : $smtp_port"
 507     echo "SMTP username : $smtp_user_name"
 508     echo "SMTP password : $smtp_password"
 509
 510     if [ "$letsencrypt_status" == "Enter 'OFF' to disable." ]
 511     then
 512       echo "Let's Encrypt : $letsencrypt_account_email"
 513     fi
 514
 515     if [ "$maxmind_license_key" != "1234567890123456" ]
 516     then
 517       echo "Maxmind license: $maxmind_license_key"
 518     else
 519             echo "Maxmind license: (unset)"
 520     fi
 521
 522     echo ""
 523     read -p "ENTER to continue, 'n' to try again, Ctrl+C to exit: " config_ok
 524   done
 525
 526   sed -i -e "s/^  DISCOURSE_HOSTNAME:.*/  DISCOURSE_HOSTNAME: $hostname/w $changelog" $web_file
 527   if [ -s $changelog ]
 528   then
 529     rm $changelog
 530   else
 531     echo "DISCOURSE_HOSTNAME change failed."
 532     update_ok="n"
 533   fi
 534
 535   sed -i -e "s/^  DISCOURSE_DEVELOPER_EMAILS:.*/  DISCOURSE_DEVELOPER_EMAILS: \'$developer_emails\'/w $changelog" $web_file
 536   if [ -s $changelog ]
 537   then
 538     rm $changelog
 539   else
 540     echo "DISCOURSE_DEVELOPER_EMAILS change failed."
 541     update_ok="n"
 542   fi
 543
 544   sed -i -e "s/^  DISCOURSE_SMTP_ADDRESS:.*/  DISCOURSE_SMTP_ADDRESS: $smtp_address/w $changelog" $web_file
 545   if [ -s $changelog ]
 546   then
 547     rm $changelog
 548   else
 549     echo "DISCOURSE_SMTP_ADDRESS change failed."
 550     update_ok="n"
 551   fi
 552
 553   sed -i -e "s/^  #\?DISCOURSE_SMTP_PORT:.*/  DISCOURSE_SMTP_PORT: $smtp_port/w $changelog" $web_file
 554   if [ -s $changelog ]
 555   then
 556     rm $changelog
 557   else
 558     echo "DISCOURSE_SMTP_PORT change failed."
 559     update_ok="n"
 560   fi
 561
 562   sed -i -e "s/^  #\?DISCOURSE_SMTP_USER_NAME:.*/  DISCOURSE_SMTP_USER_NAME: $smtp_user_name/w $changelog" $web_file
 563   if [ -s $changelog ]
 564   then
 565     rm $changelog
 566   else
 567     echo "DISCOURSE_SMTP_USER_NAME change failed."
 568     update_ok="n"
 569   fi
 570
 571   if [[ "$smtp_password" == *"\""* ]]
 572   then
 573     SLASH="BROKEN"
 574     echo "========================================"
 575     echo "WARNING!!!"
 576     echo "Your password contains a quote (\")"
 577     echo "Your SMTP Password will not be set. You will need to edit app.yml to enter it."
 578     echo "========================================"
 579     update_ok="n"
 580   else
 581     SLASH="|"
 582     if [[ "$smtp_password" == *"$SLASH"* ]]
 583     then SLASH="+"
 584       if [[ "$smtp_password" == *"$SLASH"* ]]
 585       then
 586         SLASH="Q"
 587         if [[ "$smtp_password" == *"$SLASH"* ]]
 588         then
 589           SLASH="BROKEN"
 590           echo "========================================"
 591           echo "WARNING!!!"
 592           echo "Your password contains all available delimiters (+, |, and Q). "
 593           echo "Your SMTP Password will not be set. You will need to edit app.yml to enter it."
 594           echo "========================================"
 595           update_ok="n"
 596          fi
 597        fi
 598     fi
 599   fi
 600   if [[ "$SLASH" != "BROKEN" ]]
 601   then
 602     sed -i -e "s${SLASH}^  #\?DISCOURSE_SMTP_PASSWORD:.*${SLASH}  DISCOURSE_SMTP_PASSWORD: \"${smtp_password}\"${SLASH}w $changelog" $web_file
 603
 604     if [ -s $changelog ]
 605     then
 606       rm $changelog
 607     else
 608       echo "DISCOURSE_SMTP_PASSWORD change failed."
 609       update_ok="n"
 610     fi
 611   fi
 612
 613   echo "Enabling Let's Encrypt"
 614     sed -i -e "s/^  #\?LETSENCRYPT_ACCOUNT_EMAIL:.*/  LETSENCRYPT_ACCOUNT_EMAIL: $letsencrypt_account_email/w $changelog" $web_file
 615     if [ -s $changelog ]
 616     then
 617       rm $changelog
 618     else
 619       echo "LETSENCRYPT_ACCOUNT_EMAIL change failed."
 620       update_ok="n"
 621     fi
 622     local src='^  #\?- "templates\/web.ssl.template.yml"'
 623     local dst='  \- "templates\/web.ssl.template.yml"'
 624     sed -i -e "s/$src/$dst/w $changelog" $web_file
 625     if [ -s $changelog ]
 626     then
 627       echo "web.ssl.template.yml enabled"
 628     else
 629       update_ok="n"
 630       echo "web.ssl.template.yml NOT ENABLED--was it on already?"
 631     fi
 632     local src='^  #\?- "templates\/web.letsencrypt.ssl.template.yml"'
 633     local dst='  - "templates\/web.letsencrypt.ssl.template.yml"'
 634
 635     sed -i -e "s/$src/$dst/w $changelog" $web_file
 636     if [ -s $changelog ]
 637     then
 638       echo "letsencrypt.ssl.template.yml enabled"
 639     else
 640       update_ok="n"
 641       echo "letsencrypt.ssl.template.yml NOT ENABLED -- was it on already?"
 642     fi
 643
 644     echo
 645     if [ $maxmind_license_key != "1234567890123456" ]
 646     then
 647       echo "Setting MAXMIND key to $maxmind_license_key in $web_file"
 648       sed -i -e "s/^.*DISCOURSE_MAXMIND_LICENSE_KEY:.*/  DISCOURSE_MAXMIND_LICENSE_KEY: $maxmind_license_key/w $changelog" $web_file
 649       if [ -s $changelog ]
 650       then
 651         rm $changelog
 652       else
 653         echo "DISCOURSE_MAXMIND_LICENSE_KEY change failed."
 654         update_ok="n"
 655       fi
 656     fi
 657
 658   if [ "$update_ok" == "y" ]
 659   then
 660     echo -e "\nConfiguration file at $config_file updated successfully!\n"
 661   else
 662     echo -e "\nUnfortunately, there was an error changing $config_file\n"
 663     echo -d "This may happen if you have made unexpected changes."
 664     exit 1
 665   fi
 666 }
 667
 668 ##
 669 ## is our config file valid? Does it have the required fields set?
 670 ##
 671 validate_config() {
 672
 673   valid_config="y"
 674
 675   for x in DISCOURSE_SMTP_ADDRESS DISCOURSE_SMTP_USER_NAME DISCOURSE_SMTP_PASSWORD \
 676            DISCOURSE_DEVELOPER_EMAILS DISCOURSE_HOSTNAME
 677   do
 678     read_config $x
 679     local result=$read_config_result
 680     read_default $x
 681     local default=$read_default_result
 682
 683     if [ ! -z "$result" ]
 684     then
 685       if [[ "$config_line" = *"$default"* ]]
 686       then
 687         echo "$x left at incorrect default of $default"
 688         valid_config="n"
 689       fi
 690       config_val=`echo $config_line | awk '{print $2}'`
 691       if [ -z $config_val ]
 692       then
 693         echo "$x was not configured"
 694         valid_config="n"
 695       fi
 696     else
 697       echo "$x not present"
 698       valid_config="n"
 699     fi
 700   done
 701
 702   if [ "$valid_config" != "y" ]; then
 703     echo -e "\nSorry, these $web_file settings aren't valid -- can't continue!"
 704     echo "If you have unusual requirements, edit $web_file and then: "
 705     echo "./launcher bootstrap $app_name"
 706     exit 1
 707   fi
 708 }
 709
 710
 711 ##
 712 ## template file names
 713 ##
 714
 715 if [ "$1" == "2container" ]
 716 then
 717     app_name=web_only
 718     data_name=data
 719     web_template=samples/web_only.yml
 720     data_template=samples/data.yml
 721     web_file=containers/$app_name.yml
 722     data_file=containers/$data_name.yml
 723 else
 724   app_name=app
 725   data_name=app
 726   web_template=samples/standalone.yml
 727   data_template=""
 728   web_file=containers/$app_name.yml
 729   data_file=containers/$app_name.yml
 730 fi
 731     changelog=/tmp/changelog
 732
 733 ##
 734 ## Check requirements before creating a copy of a config file we won't edit
 735 ##
 736 check_root
 737 check_and_install_docker
 738 check_disk_and_memory
 739 assert_maxmind_license_key
 740
 741 if [ -a "$web_file" ]
 742 then
 743   echo "The configuration file $web_file already exists!"
 744   echo
 745   echo ". . . reconfiguring . . ."
 746   echo
 747   echo
 748   DATE=`date +"%Y-%m-%d-%H%M%S"`
 749   BACKUP=$app_name.yml.$DATE.bak
 750   echo Saving old file as $BACKUP
 751   cp $web_file containers/$BACKUP
 752   echo "Stopping existing container in 5 seconds or Control-C to cancel."
 753   sleep 5
 754   ./launcher stop app
 755   echo
 756 else
 757   check_ports
 758   cp -v $web_template $web_file
 759   if [ "$data_name" == "data" ]
 760   then
 761       echo "--------------------------------------------------"
 762       echo "This two container setup is currently unsupported. Use at your own risk!"
 763       echo "--------------------------------------------------"
 764       DISCOURSE_DB_PASSWORD=`date +%s | sha256sum | base64 | head -c 20`
 765
 766      sed -i -e "s/DISCOURSE_DB_PASSWORD: SOME_SECRET/DISCOURSE_DB_PASSWORD: $DISCOURSE_DB_PASSWORD/w $changelog" $web_file
 767      if  [ -s $changelog ]
 768      then
 769          rm $changelog
 770      else
 771        echo "Problem changing DISCOURSE_DB_PASSWORD" in $web_file
 772      fi
 773
 774      cp -v $data_template $data_file
 775      quote=\'
 776      sed -i -e "s/password ${quote}SOME_SECRET${quote}/password '$DISCOURSE_DB_PASSWORD'/w $changelog" $data_file
 777      if  [ -s $changelog ]
 778      then
 779          rm $changelog
 780      else
 781        echo "Problem changing DISCOURSE_DB_PASSWORD" in $data_file
 782      fi
 783   fi
 784 fi
 785
 786 scale_ram_and_cpu
 787 ask_user_for_config
 788 validate_config
 789
 790 ##
 791 ## if we reach this point without exiting, OK to proceed
 792 ## rebuild won't fail if there's nothing to rebuild and does the restart
 793 ##
 794 echo "Updates successful. Rebuilding in 5 seconds."
 795 sleep 5 # Just a chance to ^C in case they were too fast on the draw
 796 if [ "$data_name" == "$app_name" ]
 797 then
 798     echo Building $app_name
 799     ./launcher rebuild $app_name
 800 else
 801     echo Building $data_name now . . .
 802     ./launcher rebuild $data_name
 803     echo Building $app_name now . . .
 804     ./launcher rebuild $app_name
 805 fi