NewsBlur is a personal news reader that brings people together to talk about the world. A new sound of an old instrument.
Not every program listed in the Prerequisites section is necessary to run NewsBlur.
Elasticsearchis the only module that requires Java. If you can live without searching for feeds or searching for stories, then you can ignore it and NewsBlur will just spit out that you don't have a search server in the logs.
Jammitis for asset compression. Don't bother using it since the alternative is to just serve every js and css file in individual files without compression. Besides, nginx gzips those files automatically if you use the built-in nginx config. Just set
DEBUG_ASSETS = Truein your localsettings.py (which is also in localsettings.py.template).
scipyare used for the colors used all over the site. Every site's favicon is analyzed for its dominant color, and that color is what gives every site its feel. You'll see it by every story all over. I'd recommend installing it, as you can just use prebuilt packages and don't have to install from source, which is possible but not trivial.
You will want to have your database set up before you begin installation. Fabric can install both PostgreSQL and MongoDB for you, but only on Ubuntu. Mac OS X users will want to have MySQL or PostgreSQL already installed. You can download MySQL or download PostgreSQL. Additionally, if running as a development machine on Mac OS X, I would recommend using MySQL with Sequel Pro as a GUI.
If you are installing MySQL, you will also need the MySQLDB python library:
sudo easy_install mysql-python
Both Mac OS X and Linux require Fabric to be installed. Many common tasks, such as installing dependencies, deploying servers, migrations, and configurations are in
sudo easy_install fabric
On recent installations of Mac OS X using XCode 4, you may run into issues around the
ppcarchitecture. To fix this, simply run:
sudo ln -s /Developer/Platforms/iPhoneOS.platform/Developer/usr/libexec/gcc/darwin/ppc \ /Developer/usr/libexec/gcc/darwin sudo ln -s /Developer/Platforms/iPhoneOS.platform/Developer/usr/libexec/gcc/darwin/ppc \ /usr/libexec/gcc/darwin
Sym-linking the ppc architecture comes from this StackOverflow answer on "assembler for architecture ppc not installed on Mac OS".
On top of MySQL/PostgreSQL, NewsBlur uses MongoDB to store non-relational data. You will want to download MongoDB. If you are on Ubuntu, the
setup_mongoFabric command will automatically do this for you, but Mac OS X needs to have it installed manually.
Not the easiest to get installed. If you are running Mac OS X, you have a few options:
sudo port install py26-numpy py26-scipy
You must have Java 7 installed to run Jammit.
Also install the following gems:
sudo gem install closure-compiler jsmin cssmin uglifier
From inside the repository, run:
pip install -r requirements.txt
fabfile.pythere are two paths that need to be configured.
env.paths.NEWSBLURis the relative path to the NewsBlur repository.
env.paths.VENDORis the relative path to where all downloaded code should go.
local_settings.pythere are a few paths that need to be configured. Configure these after the installation below.
Using Mac OS X as a development environment, you can run all three servers (app, db, task) on the same system. You should have Fabric installed to run the
fabfile.py. You should also have MySQL/PostgreSQL and MongoDB already installed.
fab -R local setup_python fab -R local setup_mongoengine fab -R local setup_forked_mongoengine fab -R local setup_repo_local_settings fab -R local compress_assets
If any of the packages fail to install (
lxml, for instance), look through
fabfile.pyand check if there is a function that can be used to circumvent broken easy_install processes. For example, lxml may need libxslt and libxml2 to be installed. This is automated with the following Fabric command:
fab -R local setup_libxml_code
Configure MySQL/PostgreSQL by adding in a
newsbluruser and a
newsblurdatabase. Here's an example for MySQL:
mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/path/to/var/mysql --tmpdir=/tmp mysql.server start mysql -u root > CREATE USER 'newsblur'@'localhost' IDENTIFIED BY ''; > GRANT ALL PRIVILEGES ON *.* TO 'newsblur'@'localhost' WITH GRANT OPTION; > CREATE DATABASE newsblur; > exit
Then load up the database with empty NewsBlur tables and bootstrap the database:
./manage.py syncdb --all --noinput ./manage.py migrate --fake ./manage.py migrate ./manage.py loaddata config/fixtures/bootstrap.json
If you don't create a user during
bootstrap.jsonfile will create a newsblur user with no password.
Start mongodb (if not already running):
Run the development server. At this point, all dependencies should be installed and no additional configuration is needed. If you find that something is not working at this point, please email the resulting output to Samuel Clay at [email protected].
Create an account. At the end of the account creation process, you will be redirected to https://localhost/profile/stripe_form. Hit the back button a few times, and you will be inside the app.
If you are on Ubuntu, you can simply use Fabric to install NewsBlur and its many components. NewsBlur is designed to run on three separate servers: an app server, a db server, and assorted task servers. To install everything on a single machine, read through
fabfile.pyand setup all three servers (app, db, and task) without repeating the
You must perform a few tasks to tie all of the various systems together.
First, copy local_settings.py and fill in your OAuth keys, S3 keys, database names (if not
newsblur), task server/broker address (RabbitMQ), and paths:
cp local_settings.py.template local_settings.py
Edit local_settings.py to change any keys that you have.
newsblurdatabase in MySQL/PostgreSQL
fab -R local setup_app
fab -R local setup_db
fab -R local setup_task
These commands keep NewsBlur fresh and updated. While on a development server, these commands do not need to be run more than once. However, you will probably want to run the
refresh_feedscommand regularly so you have new stories to test with and read.
If you just want to fetch feeds once, you can use the
./manage.py refresh_feeds --force
You can also fetch the feeds for a specific user:
./manage.py refresh_feeds --user=newsblur --force
To populate the feedback table on the homepage, use the
collect_feedbackmanagement command every few minutes:
To populate the statistics graphs on the homepage, use the
collect_statsmanagement command every few minutes:
Once you have an elasticsearch server running, you'll want to bootstrap it with feed and story indexes.
Stories will be indexed automatically.
If you need to move search servers and want to just delete everything in the search database, you need to reset the MUserSearch table.
>>> from apps.search.models import MUserSearch >>> MUserSearch.remove_all()
NewsBlur comes complete with a test suite that tests the functionality of the rss_feeds, reader, and feed importer. To run the test suite:
./manage.py test --settings=utils.test_settings
You got the downtime message either through email or SMS. This is the order of operations for determining what's wrong.
0a. If downtime goes over 5 minutes, go to Twitter and say you're handling it. Be transparent about what it is, NewsBlur's followers are largely technical. Also the 502 page points users to Twitter for status updates.
0b. Ensure you have
secrets-newsblur/configs/hostsinstalled in your
/etc/hostsso server hostnames work.
Check www.newsblur.com to confirm it's down.
If you don't get a 502 page, then NewsBlur isn't even reachable and you just need to contact the hosting provider and yell at them.
Check which servers can't be reached on HAProxy stats page. Basic auth can be found in secrets/configs/haproxy.conf. Search the secrets repo for "gimmiestats".
Typically it'll be mongo, but any of the redis or postgres servers can be unreachable due to acts of god. Otherwise, a frequent cause is lack of disk space. There are monitors on every DB server watching for disk space, emailing me when they're running low, but it still happens.
Check Sentry and see if the answer is at the top of the list.
This will show if a database (redis, mongo, postgres) can't be found.
Check the various databases:
a. If Redis server (dbredis, dbredisstory, dbredis_pubsub) can't connect, redis is probably down.
SSH into the offending server (or just check both the `db_redis` and `db_redis_story` servers) and check if `redis` is running. You can often `tail -f -n 100 /var/log/redis.log` to find out if background saving was being SIG(TERM|INT)'ed. When redis goes down, it's always because it's consuming too much memory. That shouldn't happen, so check the [munin graphs](http://db_redis/munin/).
Boot it with
sudo /etc/init.d/redis start.
b. If mongo (db_mongo) can't connect, mongo is probably down.
This is rare and usually signifies hardware failure. SSH into `db_mongo` and check logs with `tail -f -n 100 /var/log/mongodb/mongodb.log`. Start mongo with `sudo /etc/init.d/mongodb start` then promote the next largest mongodb server. You want to then promote one of the secondaries to primary, kill the offending primary machine, and rebuild it (preferably at a higher size). I recommend waiting a day to rebuild it so that you get a different machine. Don't forget to lodge a support ticket with the hosting provider so they know to check the machine.
If it's the db_mongo_analytics machine, there is no backup nor secondaries of the data (because it's ephemeral and used for, you guessed it, analytics). You can easily provision a new mongodb server and point to that machine.
If mongo is out of space, which happens, the servers need to be re-synced every 2-3 months to compress the data bloat. Simply
rm -fr /var/lib/mongodb/*and re-start Mongo. It will re-sync.
If both secondaries are down, then the primary Mongo will go down. You'll need a secondary mongo in the sync state at the very least before the primary will accept reads. It shouldn't take long to get into that state, but you'll need a mongodb machine setup. You can immediately reuse the non-working secondary if disk space is the only issue.
c. If postgresql (db_pgsql) can't connect, postgres is probably down.
This is the rarest of the rare and has in fact never happened. Machine failure. If you can salvage the db data, move it to another machine. Worst case you have nightly backups in S3. The fabfile.py has commands to assist in restoring from backup (the backup file just needs to be local).
Point to a new/different machine
a. Confirm the IP address of the new machine with
secrets-newsbur/config/hoststo reflect the new machine.
c. Copy the new
hostsfile to all machines with:
fab all setup_hosts
d. Changes should be instant, but you can also bounce every machine with:
fab web deploy fab task celery
utils/tlnbt.pyfor lots of reading and feed fetching.
tasked_feedsqueue is empty. You can drain it by running:
This happens when a deploy on the task servers hits faults and the task servers lose their connection without giving the tasked feeds back to the queue. Feeds that fall through this crack are automatically fixed after 24 hours, but if many feeds fall through due to a bad deploy or electrical failure, you'll want to accelerate that check by just draining the tasked feeds pool, adding those feeds back into the queue. This command is idempotent.
NewsBlur is licensed under the MIT License. (See LICENSE)