Just a quick post on how to stop an app on Heroku:
root@chris-VirtualBox:~/site# heroku maintenance:on Maintenance mode enabled.
This will display a static page to all visitors but still allows for migrations etc:
To re-enable the app simply use the following:
root@chris-VirtualBox:~/site# heroku maintenance:off Maintenance mode disabled.
I ran into a bit of trouble uploading an app to heroku for the first time, I was unable to authenticate.
root@chris-VirtualBox:~/site# git push heroku master Permission denied (publickey). fatal: The remote end hung up unexpectedly
This turned out to be an issue with my public key, in order to fix it simply create a new one:
root@chris-VirtualBox:~/site# ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: ...
Re-upload it:
root@chris-VirtualBox:~/site# heroku keys:add /root/.ssh/id_rsa.pub Uploading ssh public key /root/.ssh/id_rsa.pub
And finally re-push everything:
root@chris-VirtualBox:~/site# git push heroku master Enter passphrase for key '/root/.ssh/id_rsa': Counting objects: 579, done. Compressing objects: 100% (513/513), done. Writing objects: 100% (579/579), 6.09 MiB | 83 KiB/s, done. Total 579 (delta 101), reused 0 (delta 0) -----> Heroku receiving push -----> Ruby/Rails app detected
This Heroku page actually provides quite a bit of info if you’re still having problems: http://devcenter.heroku.com/articles/rails3
I ran into a bit of problem moving an app to a test Heroku host – I needed to install PostgreSQL. I added the following to my Gemfile:
#Gemfile #gem 'sqlite3' gem 'pg'
I then tried to run bundle install:
root@chris-VirtualBox:~/site# bundle install
However I received the following error:
root@chris-VirtualBox:~/site# bundle install
Fetching source index for http://rubygems.org/
Using rake (0.9.2)
Using multi_json (1.0.3)
Using activesupport (3.1.1)
Using builder (3.0.0)
Using i18n (0.6.0)
Using activemodel (3.1.1)
Using erubis (2.7.0)
Using rack (1.3.4)
Using rack-cache (1.1)
Using rack-mount (0.8.3)
Using rack-test (0.6.1)
Using hike (1.2.1)
Using tilt (1.3.3)
Using sprockets (2.0.2)
Using actionpack (3.1.1)
Using mime-types (1.16)
Using polyglot (0.3.2)
Using treetop (1.4.10)
Using mail (2.3.0)
Using actionmailer (3.1.1)
Using arel (2.2.1)
Using tzinfo (0.3.30)
Using activerecord (3.1.1)
Using activeresource (3.1.1)
Using bundler (1.0.21)
Using rack-ssl (1.3.2)
Using json (1.6.1)
Using rdoc (3.10)
Using thor (0.14.6)
Using railties (3.1.1)
Using rails (3.1.1)
Using acts-as-taggable-on (2.1.1)
Using awesome_nested_set (2.0.2)
Using bcrypt-ruby (3.0.1)
Using carrierwave (0.5.7)
Using cocaine (0.2.0)
Using coffee-script-source (1.1.2)
Using execjs (1.2.9)
Using coffee-script (2.2.0)
Using coffee-rails (3.1.1)
Using orm_adapter (0.0.5)
Using warden (1.0.6)
Using devise (1.4.8)
Using escape (0.0.4)
Using geocoder (1.0.5) from git://github.com/alexreisner/geocoder.git (at no_grouping)
Using jquery-rails (1.0.16)
Using libv8 (3.3.10.2)
Using nokogiri (1.5.0)
Using paperclip (2.4.5)
Installing pg (0.12.2) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/usr/bin/ruby1.8 extconf.rb
checking for pg_config... no
No pg_config... trying anyway. If building fails, please try again with
--with-pg-config=/path/to/pg_config
checking for libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/bin/ruby1.8
--with-pg
--without-pg
--with-pg-dir
--without-pg-dir
--with-pg-include
--without-pg-include=${pg-dir}/include
--with-pg-lib
--without-pg-lib=${pg-dir}/lib
--with-pg-config
--without-pg-config
--with-pg_config
--without-pg_config
Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/pg-0.12.2 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/pg-0.12.2/ext/gem_make.out
An error occured while installing pg (0.12.2), and Bundler cannot continue.
Make sure that `gem install pg -v '0.12.2'` succeeds before bundling.
It turned out that because I was on Ubuntu I needed to install the libpq-dev package:
root@chris-VirtualBox:~/site# apt-get install libpq-dev Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: linux-headers-2.6.38-8 linux-headers-2.6.38-8-generic Use 'apt-get autoremove' to remove them. The following extra packages will be installed: comerr-dev krb5-multidev libgssapi-krb5-2 libgssrpc4 libk5crypto3 libkadm5clnt-mit7 libkadm5srv-mit7 libkdb5-4 libkrb5-3 libkrb5-dev libkrb5support0 libpq5 libssl-dev Suggested packages: krb5-doc krb5-user postgresql-doc-8.4 The following NEW packages will be installed: comerr-dev krb5-multidev libgssrpc4 libkadm5clnt-mit7 libkadm5srv-mit7 libkdb5-4 libkrb5-dev libpq-dev libpq5 libssl-dev The following packages will be upgraded: libgssapi-krb5-2 libk5crypto3 libkrb5-3 libkrb5support0 4 upgraded, 10 newly installed, 0 to remove and 106 not upgraded. Need to get 3,142 kB of archives. After this operation, 8,520 kB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libk5crypto3 i386 1.8.3+dfsg-5ubuntu2.2 [76.7 kB] Get:2 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libgssapi-krb5-2 i386 1.8.3+dfsg-5ubuntu2.2 [100 kB] Get:3 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libkrb5-3 i386 1.8.3+dfsg-5ubuntu2.2 [327 kB] Get:4 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libkrb5support0 i386 1.8.3+dfsg-5ubuntu2.2 [22.2 kB] Get:5 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libgssrpc4 i386 1.8.3+dfsg-5ubuntu2.2 [54.6 kB] Get:6 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libkadm5clnt-mit7 i386 1.8.3+dfsg-5ubuntu2.2 [38.7 kB] Get:7 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libkdb5-4 i386 1.8.3+dfsg-5ubuntu2.2 [38.1 kB] Get:8 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libkadm5srv-mit7 i386 1.8.3+dfsg-5ubuntu2.2 [51.6 kB] Get:9 http://au.archive.ubuntu.com/ubuntu/ natty/main comerr-dev i386 2.1-1.41.14-1ubuntu3 [41.5 kB] Get:10 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main krb5-multidev i386 1.8.3+dfsg-5ubuntu2.2 [82.5 kB] Get:11 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libpq5 i386 8.4.10-0ubuntu0.11.04.1 [81.6 kB] Get:12 http://au.archive.ubuntu.com/ubuntu/ natty/main libssl-dev i386 0.9.8o-5ubuntu1 [2,019 kB] Get:13 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libkrb5-dev i386 1.8.3+dfsg-5ubuntu2.2 [15.0 kB] Get:14 http://au.archive.ubuntu.com/ubuntu/ natty-updates/main libpq-dev i386 8.4.10-0ubuntu0.11.04.1 [193 kB] Fetched 3,142 kB in 6s (506 kB/s) (Reading database ... 167506 files and directories currently installed.) Preparing to replace libk5crypto3 1.8.3+dfsg-5ubuntu2.1 (using .../libk5crypto3_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Unpacking replacement libk5crypto3 ... Preparing to replace libgssapi-krb5-2 1.8.3+dfsg-5ubuntu2.1 (using .../libgssapi-krb5-2_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Unpacking replacement libgssapi-krb5-2 ... Preparing to replace libkrb5-3 1.8.3+dfsg-5ubuntu2.1 (using .../libkrb5-3_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Unpacking replacement libkrb5-3 ... Preparing to replace libkrb5support0 1.8.3+dfsg-5ubuntu2.1 (using .../libkrb5support0_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Unpacking replacement libkrb5support0 ... Selecting previously deselected package libgssrpc4. Unpacking libgssrpc4 (from .../libgssrpc4_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Selecting previously deselected package libkadm5clnt-mit7. Unpacking libkadm5clnt-mit7 (from .../libkadm5clnt-mit7_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Selecting previously deselected package libkdb5-4. Unpacking libkdb5-4 (from .../libkdb5-4_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Selecting previously deselected package libkadm5srv-mit7. Unpacking libkadm5srv-mit7 (from .../libkadm5srv-mit7_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Selecting previously deselected package comerr-dev. Unpacking comerr-dev (from .../comerr-dev_2.1-1.41.14-1ubuntu3_i386.deb) ... Selecting previously deselected package krb5-multidev. Unpacking krb5-multidev (from .../krb5-multidev_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Selecting previously deselected package libpq5. Unpacking libpq5 (from .../libpq5_8.4.10-0ubuntu0.11.04.1_i386.deb) ... Selecting previously deselected package libssl-dev. Unpacking libssl-dev (from .../libssl-dev_0.9.8o-5ubuntu1_i386.deb) ... Selecting previously deselected package libkrb5-dev. Unpacking libkrb5-dev (from .../libkrb5-dev_1.8.3+dfsg-5ubuntu2.2_i386.deb) ... Selecting previously deselected package libpq-dev. Unpacking libpq-dev (from .../libpq-dev_8.4.10-0ubuntu0.11.04.1_i386.deb) ... Processing triggers for man-db ... Processing triggers for doc-base ... Processing 1 added doc-base file(s)... Registering documents with scrollkeeper... Processing triggers for install-info ... Setting up libkrb5support0 (1.8.3+dfsg-5ubuntu2.2) ... Setting up libk5crypto3 (1.8.3+dfsg-5ubuntu2.2) ... Setting up libkrb5-3 (1.8.3+dfsg-5ubuntu2.2) ... Setting up libgssapi-krb5-2 (1.8.3+dfsg-5ubuntu2.2) ... Setting up libgssrpc4 (1.8.3+dfsg-5ubuntu2.2) ... Setting up libkadm5clnt-mit7 (1.8.3+dfsg-5ubuntu2.2) ... Setting up libkdb5-4 (1.8.3+dfsg-5ubuntu2.2) ... Setting up libkadm5srv-mit7 (1.8.3+dfsg-5ubuntu2.2) ... Setting up comerr-dev (2.1-1.41.14-1ubuntu3) ... Setting up krb5-multidev (1.8.3+dfsg-5ubuntu2.2) ... Setting up libpq5 (8.4.10-0ubuntu0.11.04.1) ... Setting up libssl-dev (0.9.8o-5ubuntu1) ... Setting up libkrb5-dev (1.8.3+dfsg-5ubuntu2.2) ... Setting up libpq-dev (8.4.10-0ubuntu0.11.04.1) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place root@chris-VirtualBox:~/site#
And then just run bundle install again:
root@chris-VirtualBox:~/site# bundle install
There’s some documentation on the gems wiki page: https://bitbucket.org/ged/ruby-pg/wiki/Home
Just a quick post on the command to start the rails console:
chris@chris-VirtualBox:~/site$ rails console Loading development environment (Rails 3.1.1) irb(main):001:0>
Here’s the documentation, it provides a pretty good summary of all the commands you’re likely to need.
Just a very quick post on how to re-index Sunspot/Solr – simply open the console and enter the following command:
chris@chris-VirtualBox:~/site$ rake sunspot:solr:reindex
WARNING: 'task :t, arg, :needs => [deps]' is deprecated. Please use 'task :t, [args] => [deps]' instead.
at /usr/lib/ruby/gems/1.8/gems/sunspot_rails-1.2.1/lib/sunspot/rails/tasks.rb:41
chris@chris-VirtualBox:~/site$
That’s all there is to it, nice and easy!
Due to a few recent issues with SunSpot (see my previous posts), I’ve decided to uninstall it until I have enough time to work on it properly. Once again, Ruby makes this pretty simple:
chris@chris-VirtualBox:~/site$ sudo gem uninstall sunspot [sudo] password for chris: You have requested to uninstall the gem: sunspot-1.2.1 sunspot_rails-1.2.1 depends on [sunspot (= 1.2.1)] If you remove this gems, one or more dependencies will not be met. Continue with Uninstall? [Yn] y Remove executables: sunspot-solr, sunspot-installer in addition to the gem? [Yn] y Removing sunspot-solr Removing sunspot-installer Successfully uninstalled sunspot-1.2.1
cid = 1
name = user_id
type = integer
notnull = 0
dflt_value =
pk = 0
cid = 3
name = created_at
type = datetime
notnull = 0
dflt_value =
pk = 0
Good Luck!
Well, looks like the first thing I’ve managed to break today is WEBrick – a web server for ruby on rails. The general idea behind the error message appears to be that the address it’s trying to start is already in use:
What I Broke - Programming and Web Development 