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   echo -e "HTTP/1.1 200 OK\n\n $VERIFY" | nc -w 4 -l -p $PORT >/dev/null 2>&1 &
  23   if curl --proto =http -s $HOST:$PORT --connect-timeout 3 | grep $VERIFY >/dev/null 2>&1
  24   then
  25       return 0
  26   else
  27     curl --proto =http -s localhost:$PORT >/dev/null 2>&1
  28     return 1
  29   fi
  30 }
  31
  32 check_IP_match () {
  33   HOST="$1"
  34   echo
  35   echo Checking your domain name . . .
  36   if connect_to_port $HOST 443
  37   then
  38       echo
  39       echo "Connection to $HOST succeeded."
  40   else
  41     echo WARNING:: This server does not appear to be accessible at $HOST:443.
  42     echo
  43     if connect_to_port $HOST 80
  44     then
  45         echo A connection to port 80 succeeds, however.
  46         echo This suggests that your DNS settings are correct,
  47         echo but something is keeping traffic to port 443 from getting to your server.
  48         echo Check your networking configuration to see that connections to port 443 are allowed.
  49     else
  50       echo "A connection to http://$HOST (port 80) also fails."
  51       echo
  52       echo This suggests that $HOST resolves to the wrong IP address
  53       echo or that traffic is not being routed to your server.
  54     fi
  55     echo
  56     echo Google: \"open ports YOUR CLOUD SERVICE\" for information for resolving this problem.
  57     echo
  58     echo You should probably answer \"n\" at the next prompt and disable Let\'s Encrypt.
  59     echo
  60     echo This test might not work for all situations,
  61     echo so if you can access Discourse at http://$HOST, you might try anyway.
  62     sleep 3
  63   fi
  64 }
  65
  66 ##
  67 ## Do we have docker?
  68 ##
  69 check_and_install_docker () {
  70   docker_path=`which docker.io || which docker`
  71   if [ -z $docker_path ]; then
  72     read  -p "Docker not installed. Enter to install from https://get.docker.com/ or Ctrl+C to exit"
  73     curl https://get.docker.com/ | sh
  74   fi
  75   docker_path=`which docker.io || which docker`
  76   if [ -z $docker_path ]; then
  77     echo Docker install failed. Quitting.
  78     exit
  79   fi
  80 }
  81
  82 ##
  83 ## What are we running on
  84 ##
  85 check_OS() {
  86   echo `uname -s`
  87 }
  88
  89 ##
  90 ## OS X available memory
  91 ##
  92 check_osx_memory() {
  93   echo `free -m | awk '/Mem:/ {print $2}'`
  94 }
  95
  96 ##
  97 ## Linux available memory
  98 ##
  99 check_linux_memory() {
 100   echo `free -g --si | awk ' /Mem:/  {print $2} '`
 101 }
 102
 103 ##
 104 ## Do we have enough memory and disk space for Discourse?
 105 ##
 106 check_disk_and_memory() {
 107
 108   os_type=$(check_OS)
 109   avail_mem=0
 110   if [ "$os_type" == "Darwin" ]; then
 111     avail_mem=$(check_osx_memory)
 112   else
 113     avail_mem=$(check_linux_memory)
 114   fi
 115
 116   if [ "$avail_mem" -lt 1 ]; then
 117     echo "WARNING: Discourse requires 1GB RAM to run. This system does not appear"
 118     echo "to have sufficient memory."
 119     echo
 120     echo "Your site may not work properly, or future upgrades of Discourse may not"
 121     echo "complete successfully."
 122     exit 1
 123   fi
 124
 125   if [ "$avail_mem" -le 2 ]; then
 126     total_swap=`free -g --si | awk ' /Swap:/  {print $2} '`
 127
 128     if [ "$total_swap" -lt 2 ]; then
 129       echo "WARNING: Discourse requires at least 2GB of swap when running with 2GB of RAM"
 130       echo "or less. This system does not appear to have sufficient swap space."
 131       echo
 132       echo "Without sufficient swap space, your site may not work properly, and future"
 133       echo "upgrades of Discourse may not complete successfully."
 134       echo
 135       echo "Ctrl+C to exit or wait 5 seconds to have a 2GB swapfile created."
 136       sleep 5
 137
 138       ##
 139       ## derived from https://meta.discourse.org/t/13880
 140       ##
 141       install -o root -g root -m 0600 /dev/null /swapfile
 142       fallocate -l 2G /swapfile
 143       mkswap /swapfile
 144       swapon /swapfile
 145       echo "/swapfile       swap    swap    auto      0       0" | tee -a /etc/fstab
 146       sysctl -w vm.swappiness=10
 147       echo 'vm.swappiness = 10' > /etc/sysctl.d/30-discourse-swap.conf
 148
 149       total_swap=`free -g --si | awk ' /Swap:/ {print $2} '`
 150       if [ "$total_swap" -lt 2 ]; then
 151         echo "Failed to create swap: are you root? Are you running on real hardware, or a fully virtualized server?"
 152         exit 1
 153       fi
 154
 155     fi
 156   fi
 157
 158
 159   free_disk="$(df /var | tail -n 1 | awk '{print $4}')"
 160   if [ "$free_disk" -lt 5000 ]; then
 161     echo "WARNING: Discourse requires at least 5GB free disk space. This system"
 162     echo "does not appear to have sufficient disk space."
 163     echo
 164     echo "Insufficient disk space may result in problems running your site, and"
 165     echo "may not even allow Discourse installation to complete successfully."
 166     echo
 167     echo "Please free up some space, or expand your disk, before continuing."
 168     echo
 169     echo "Run \`apt-get autoremove && apt-get autoclean\` to clean up unused"
 170     echo "packages and \`./launcher cleanup\` to remove stale Docker containers."
 171     exit 1
 172   fi
 173
 174 }
 175
 176
 177 ##
 178 ## If we have lots of RAM or lots of CPUs, bump up the defaults to scale better
 179 ##
 180 scale_ram_and_cpu() {
 181
 182   local changelog=/tmp/changelog.$PPID
 183   # grab info about total system ram and physical (NOT LOGICAL!) CPU cores
 184   avail_gb=0
 185   avail_cores=0
 186   os_type=$(check_OS)
 187   if [ "$os_type" == "Darwin" ]; then
 188     avail_gb=$(check_osx_memory)
 189     avail_cores=`sysctl hw.ncpu | awk '/hw.ncpu:/ {print $2}'`
 190   else
 191     avail_gb=$(check_linux_memory)
 192     avail_cores=$((`awk '/cpu cores/ {print $4;exit}' /proc/cpuinfo`*`sort /proc/cpuinfo | uniq | grep -c "physical id"`))
 193   fi
 194   echo "Found ${avail_gb}GB of memory and $avail_cores physical CPU cores"
 195
 196   # db_shared_buffers: 128MB for 1GB, 256MB for 2GB, or 256MB * GB, max 4096MB
 197   if [ "$avail_gb" -eq "1" ]
 198   then
 199     db_shared_buffers=128
 200   else
 201     if [ "$avail_gb" -eq "2" ]
 202     then
 203       db_shared_buffers=256
 204     else
 205       db_shared_buffers=$(( 256 * $avail_gb ))
 206     fi
 207   fi
 208   db_shared_buffers=$(( db_shared_buffers < 4096 ? db_shared_buffers : 4096 ))
 209
 210   sed -i -e "s/^  #\?db_shared_buffers:.*/  db_shared_buffers: \"${db_shared_buffers}MB\"/w $changelog" $data_file
 211   if [ -s $changelog ]
 212   then
 213     echo "setting db_shared_buffers = ${db_shared_buffers}MB"
 214     rm $changelog
 215   fi
 216
 217   # UNICORN_WORKERS: 2 * GB for 2GB or less, or 2 * CPU, max 8
 218   if [ "$avail_gb" -le "2" ]
 219   then
 220     unicorn_workers=$(( 2 * $avail_gb ))
 221   else
 222     unicorn_workers=$(( 2 * $avail_cores ))
 223   fi
 224   unicorn_workers=$(( unicorn_workers < 8 ? unicorn_workers : 8 ))
 225
 226   sed -i -e "s/^  #\?UNICORN_WORKERS:.*/  UNICORN_WORKERS: ${unicorn_workers}/w $changelog" $web_file
 227   if [ -s $changelog ]
 228   then
 229       echo "setting UNICORN_WORKERS = ${unicorn_workers}"
 230       rm $changelog
 231   fi
 232
 233   echo $data_file memory parameters updated.
 234 }
 235
 236
 237 ##
 238 ## standard http / https ports must not be occupied
 239 ##
 240 check_ports() {
 241     check_port "80"
 242     check_port "443"
 243     echo "Ports 80 and 443 are free for use"
 244 }
 245
 246
 247 ##
 248 ## check a port to see if it is already in use
 249 ##
 250 check_port() {
 251
 252   local valid=$(netstat -tln | awk '{print $4}' | grep ":${1}\$")
 253
 254   if [ -n "$valid" ]; then
 255     echo "Port ${1} appears to already be in use."
 256     echo
 257     echo "This will show you what command is using port ${1}"
 258     lsof -i tcp:${1} -s tcp:listen
 259     echo
 260     echo "If you are trying to run Discourse simultaneously with another web"
 261     echo "server like Apache or nginx, you will need to bind to a different port"
 262     echo
 263     echo "See https://meta.discourse.org/t/17247"
 264     echo
 265     echo "If you are reconfiguring an already-configured Discourse, use "
 266     echo
 267     echo "./launcher stop app"
 268     echo
 269     echo "to stop Discourse before you reconfigure it and try again."
 270     exit 1
 271   fi
 272 }
 273
 274 ##
 275 ## read a variable from the config file
 276 ##
 277 read_config() {
 278   config_line=`egrep "^  #?$1:" $web_file`
 279   read_config_result=`echo $config_line | awk  -F":" '{print $2}'`
 280   read_config_result=`echo $read_config_result | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
 281 }
 282
 283 read_default() {
 284   config_line=`egrep "^  #?$1:" samples/standalone.yml`
 285   read_default_result=`echo $config_line | awk  -F":" '{print $2}'`
 286   read_default_result=`echo $read_config_result | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
 287 }
 288
 289 ##
 290 ## prompt user for typical Discourse config file values
 291 ##
 292 ask_user_for_config() {
 293
 294   # NOTE: Defaults now come from standalone.yml
 295
 296   local changelog=/tmp/changelog.$PPID
 297   read_config "DISCOURSE_SMTP_ADDRESS"
 298   local smtp_address=$read_config_result
 299   # NOTE: if there are spaces between emails, this breaks, but a human should be paying attention
 300   read_config "DISCOURSE_DEVELOPER_EMAILS"
 301   local developer_emails=$read_config_result
 302   read_config "DISCOURSE_SMTP_PASSWORD"
 303   local smtp_password=$read_config_result
 304   read_config "DISCOURSE_SMTP_PORT"
 305   local smtp_port=$read_config_result
 306   read_config "DISCOURSE_SMTP_USER_NAME"
 307   local smtp_user_name=$read_config_result
 308   if [ "$smtp_password" = "pa$$word" ]
 309   then
 310       smtp_password = ""
 311   fi
 312   read_config "LETSENCRYPT_ACCOUNT_EMAIL"
 313   local letsencrypt_account_email=$read_config_result
 314   if [ -z $letsencrypt_account_email ]
 315   then
 316       letsencrypt_account_email="me@example.com"
 317   fi
 318   if [ "$letsencrypt_account_email" = "me@example.com" ]
 319   then
 320       local letsencrypt_status="ENTER to skip"
 321   else
 322     local letsencrypt_status="Enter 'OFF' to disable."
 323   fi
 324
 325   read_config "DISCOURSE_HOSTNAME"
 326   hostname=$read_config_result
 327
 328   local new_value=""
 329   local config_ok="n"
 330   local update_ok="y"
 331
 332   echo ""
 333
 334   while [[ "$config_ok" == "n" ]]
 335   do
 336     if [ ! -z "$hostname" ]
 337     then
 338       read -p "Hostname for your Discourse? [$hostname]: " new_value
 339       if [ ! -z "$new_value" ]
 340       then
 341           hostname="$new_value"
 342       fi
 343       if [[ $hostname =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]
 344       then
 345         echo
 346         echo "Discourse requires a DNS hostname. IP addresses are unsupported and will not work."
 347         echo
 348         hostname="discourse.example.com"
 349       fi
 350     fi
 351
 352     if [ ! -z "$developer_emails" ]
 353     then
 354       read -p "Email address for admin account(s)? [$developer_emails]: " new_value
 355       if [ ! -z "$new_value" ]
 356       then
 357           developer_emails="$new_value"
 358       fi
 359     fi
 360
 361     if [ ! -z "$smtp_address" ]
 362     then
 363       read -p "SMTP server address? [$smtp_address]: " new_value
 364       if [ ! -z "$new_value" ]
 365       then
 366         smtp_address="$new_value"
 367       fi
 368     fi
 369
 370     if [ ! -z "$smtp_port" ]
 371     then
 372       read -p "SMTP port? [$smtp_port]: " new_value
 373       if [ ! -z "$new_value" ]
 374       then
 375         smtp_port="$new_value"
 376       fi
 377     fi
 378
 379     ##
 380     ## automatically set correct user name based on common mail providers unless it's been set
 381     ##
 382     if [ "$smtp_user_name" == "user@example.com" ]
 383     then
 384       if [ "$smtp_address" == "smtp.sparkpostmail.com" ]
 385       then
 386         smtp_user_name="SMTP_Injection"
 387       fi
 388       if [ "$smtp_address" == "smtp.sendgrid.net" ]
 389       then
 390             smtp_user_name="apikey"
 391       fi
 392       if [ "$smtp_address" == "smtp.mailgun.org" ]
 393       then
 394             smtp_user_name="postmaster@$hostname"
 395       fi
 396     fi
 397
 398     if [ ! -z "$smtp_user_name" ]
 399     then
 400       read -p "SMTP user name? [$smtp_user_name]: " new_value
 401       if [ ! -z "$new_value" ]
 402       then
 403           smtp_user_name="$new_value"
 404       fi
 405     fi
 406
 407     read -p "SMTP password? [$smtp_password]: " new_value
 408     if [ ! -z "$new_value" ]
 409     then
 410         smtp_password="$new_value"
 411     fi
 412
 413     if [ ! -z $letsencrypt_account_email ]
 414     then
 415       read -p "Optional email address for setting up Let's Encrypt? ($letsencrypt_status) [$letsencrypt_account_email]: " new_value
 416       if [ ! -z "$new_value" ]
 417       then
 418           letsencrypt_account_email="$new_value"
 419           if [ "${new_value,,}" = "off" ]
 420           then
 421             letsencrypt_status="ENTER to skip"
 422           else
 423             letsencrypt_status="Enter 'OFF' to disable."
 424           fi
 425       fi
 426     fi
 427
 428     if [ "$letsencrypt_status" == "Enter 'OFF' to disable." ]
 429     then
 430        check_IP_match $hostname
 431     fi
 432
 433     echo -e "\nDoes this look right?\n"
 434     echo "Hostname      : $hostname"
 435     echo "Email         : $developer_emails"
 436     echo "SMTP address  : $smtp_address"
 437     echo "SMTP port     : $smtp_port"
 438     echo "SMTP username : $smtp_user_name"
 439     echo "SMTP password : $smtp_password"
 440
 441     if [ "$letsencrypt_status" == "Enter 'OFF' to disable." ]
 442     then
 443       echo "Let's Encrypt : $letsencrypt_account_email"
 444     fi
 445
 446
 447     echo ""
 448     read -p "ENTER to continue, 'n' to try again, Ctrl+C to exit: " config_ok
 449   done
 450
 451   sed -i -e "s/^  DISCOURSE_HOSTNAME:.*/  DISCOURSE_HOSTNAME: $hostname/w $changelog" $web_file
 452   if [ -s $changelog ]
 453   then
 454     rm $changelog
 455   else
 456     echo "DISCOURSE_HOSTNAME change failed."
 457     update_ok="n"
 458   fi
 459
 460   sed -i -e "s/^  DISCOURSE_DEVELOPER_EMAILS:.*/  DISCOURSE_DEVELOPER_EMAILS: \'$developer_emails\'/w $changelog" $web_file
 461   if [ -s $changelog ]
 462   then
 463     rm $changelog
 464   else
 465     echo "DISCOURSE_DEVELOPER_EMAILS change failed."
 466     update_ok="n"
 467   fi
 468
 469   sed -i -e "s/^  DISCOURSE_SMTP_ADDRESS:.*/  DISCOURSE_SMTP_ADDRESS: $smtp_address/w $changelog" $web_file
 470   if [ -s $changelog ]
 471   then
 472     rm $changelog
 473   else
 474     echo "DISCOURSE_SMTP_ADDRESS change failed."
 475     update_ok="n"
 476   fi
 477
 478   sed -i -e "s/^  #\?DISCOURSE_SMTP_PORT:.*/  DISCOURSE_SMTP_PORT: $smtp_port/w $changelog" $web_file
 479   if [ -s $changelog ]
 480   then
 481     rm $changelog
 482   else
 483     echo "DISCOURSE_SMTP_PORT change failed."
 484     update_ok="n"
 485   fi
 486
 487   sed -i -e "s/^  #\?DISCOURSE_SMTP_USER_NAME:.*/  DISCOURSE_SMTP_USER_NAME: $smtp_user_name/w $changelog" $web_file
 488   if [ -s $changelog ]
 489   then
 490     rm $changelog
 491   else
 492     echo "DISCOURSE_SMTP_USER_NAME change failed."
 493     update_ok="n"
 494   fi
 495
 496   if [[ "$smtp_password" == *"\""* ]]
 497   then
 498     SLASH="BROKEN"
 499     echo "========================================"
 500     echo "WARNING!!!"
 501     echo "Your password contains a quote (\")"
 502     echo "Your SMTP Password will not be set. You will need to edit app.yml to enter it."
 503     echo "========================================"
 504     update_ok="n"
 505   else
 506     SLASH="|"
 507     if [[ "$smtp_password" == *"$SLASH"* ]]
 508     then SLASH="+"
 509       if [[ "$smtp_password" == *"$SLASH"* ]]
 510       then
 511         SLASH="Q"
 512         if [[ "$smtp_password" == *"$SLASH"* ]]
 513         then
 514           SLASH="BROKEN"
 515           echo "========================================"
 516           echo "WARNING!!!"
 517           echo "Your password contains all available delimiters (+, |, and Q). "
 518           echo "Your SMTP Password will not be set. You will need to edit app.yml to enter it."
 519           echo "========================================"
 520           update_ok="n"
 521          fi
 522        fi
 523     fi
 524   fi
 525   if [[ "$SLASH" != "BROKEN" ]]
 526   then
 527     sed -i -e "s${SLASH}^  #\?DISCOURSE_SMTP_PASSWORD:.*${SLASH}  DISCOURSE_SMTP_PASSWORD: \"${smtp_password}\"${SLASH}w $changelog" $web_file
 528
 529     if [ -s $changelog ]
 530     then
 531       rm $changelog
 532     else
 533       echo "DISCOURSE_SMTP_PASSWORD change failed."
 534       update_ok="n"
 535     fi
 536   fi
 537   if [ "$letsencrypt_status" = "ENTER to skip" ]
 538   then
 539       local src='^  #\?- "templates\/web.ssl.template.yml"'
 540       local dst='  #\- "templates\/web.ssl.template.yml"'
 541       sed -i -e "s/$src/$dst/w $changelog" $web_file
 542       if [ ! -s $changelog ]
 543       then
 544         update_ok="n"
 545         echo "web.ssl.template.yml NOT DISABLED--Are you using a non-standard template?"
 546       fi
 547       local src='^  #\?- "templates\/web.letsencrypt.ssl.template.yml"'
 548       local dst='  #- "templates\/web.letsencrypt.ssl.template.yml"'
 549
 550       sed -i -e "s/$src/$dst/w $changelog" $web_file
 551       if [ ! -s $changelog ]
 552       then
 553         update_ok="n"
 554         echo "web.ssl.template.yml NOT DISABLED--Are you using a non-standard template?"
 555       fi
 556   else # enable let's encrypt
 557     echo "Let's Encrypt will be enabled for $letsencrypt_account_email"
 558       sed -i -e "s/^  #\?LETSENCRYPT_ACCOUNT_EMAIL:.*/  LETSENCRYPT_ACCOUNT_EMAIL: $letsencrypt_account_email/w $changelog" $web_file
 559       if [ -s $changelog ]
 560       then
 561         rm $changelog
 562       else
 563         echo "LETSENCRYPT_ACCOUNT_EMAIL change failed."
 564         update_ok="n"
 565       fi
 566       local src='^  #\?- "templates\/web.ssl.template.yml"'
 567       local dst='  \- "templates\/web.ssl.template.yml"'
 568       sed -i -e "s/$src/$dst/w $changelog" $web_file
 569       if [ -s $changelog ]
 570       then
 571           echo "web.ssl.template.yml enabled"
 572       else
 573         update_ok="n"
 574         echo "web.ssl.template.yml NOT ENABLED--was it on already?"
 575       fi
 576       local src='^  #\?- "templates\/web.letsencrypt.ssl.template.yml"'
 577       local dst='  - "templates\/web.letsencrypt.ssl.template.yml"'
 578
 579       sed -i -e "s/$src/$dst/w $changelog" $web_file
 580       if [ -s $changelog ]
 581       then
 582               echo "letsencrypt.ssl.template.yml enabled"
 583       else
 584         update_ok="n"
 585         echo "letsencrypt.ssl.template.yml NOT ENABLED -- was it on already?"
 586       fi
 587   fi
 588
 589   if [ "$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