Ubuntu 22.x Setup ================= We default to this version of Ubuntu for the moment because Augur does not yet support python3.10, which is the default version of python3.x distributed with Ubuntu 22.0x.x Git Platform Requirements (Things to have setup prior to initiating installation.) ---------------------------------------------------------------------------------- 1. Obtain a GitHub Access Token: https://github.com/settings/tokens 2. Obtain a GitLab Access Token: https://gitlab.com/-/user_settings/personal_access_tokens Fork and Clone Augur ~~~~~~~~~~~~~~~~~~~~ 1. Fork https://github.com/chaoss/augur 2. Clone your fork. We recommend creating a ``github`` directory in your user’s base directory. Pre-Requisite Operating System Level Packages --------------------------------------------- Here we ensure your system is up to date, install required python libraries, install postgresql, and install our queuing infrastrucutre, which is composed of redis-server and rabbitmq-server Executable ~~~~~~~~~~ .. code:: shell sudo apt update && sudo apt upgrade && sudo apt install software-properties-common && sudo apt install python3-dev && sudo apt install python3.10-venv && sudo apt install postgresql postgresql-contrib postgresql-client && sudo apt install build-essential && sudo apt install redis-server && # required sudo apt install erlang && # required sudo apt install rabbitmq-server && #required sudo snap install go --classic && #required: Go Needs to be version 1.19.x or higher. Snap is the package manager that gets you to the right version. Classic enables it to actually be installed at the correct version. sudo apt install nginx && # required for hosting sudo add-apt-repository ppa:mozillateam/firefox-next && sudo apt install firefox=121.0~b7+build1-0ubuntu0.22.04.1 && sudo apt install firefox-geckodriver # You will almost certainly need to reboot after this. RabbitMQ Configuration ~~~~~~~~~~~~~~~~~~~~~~ The default timeout for RabbitMQ needs to be set on Ubuntu 22.x. .. code:: shell sudo vi /etc/rabbitmq/advanced.config Add this one line to that file (the period at the end matters): .. code:: shell [ {rabbit, [ {consumer_timeout, undefined} ]} ]. Git Configuration ----------------- There are some Git configuration parameters that help when you are cloning repos over time, and a platform prompts you for credentials when it finds a repo is deleted: .. code:: shell git config --global diff.renames true git config --global diff.renameLimit 200000 git config --global credential.helper cache git config --global credential.helper 'cache --timeout=9999999999999' Postgresql Configuration ------------------------ Create a PostgreSQL database for Augur to use .. code:: shell sudo su - && su - postgres && psql Then, from within the resulting postgresql shell: .. code:: sql CREATE DATABASE augur; CREATE USER augur WITH ENCRYPTED PASSWORD 'password'; GRANT ALL PRIVILEGES ON DATABASE augur TO augur; **If you’re using PostgreSQL 15 or later**, default database permissions will prevent Augur’s installer from configuring the database. Add one last line after the above to fix this: .. code:: sql GRANT ALL ON SCHEMA public TO augur; After that, return to your user by exiting ``psql`` :: postgres=# \quit Here we want to start an SSL connection to the ``augur`` database on port 5432: .. code:: shell psql -h localhost -U postgres -p 5432 Now type ``exit`` to log off the postgres user, and ``exit`` a SECOND time to log off the root user. .. code:: shell exit exit Rabbitmq Broker Configuration ----------------------------- You have to setup a specific user, and broker host for your augur instance. You can accomplish this by running the below commands: .. code:: shell sudo rabbitmq-plugins enable rabbitmq_management && sudo rabbitmqctl add_user augur password123 && sudo rabbitmqctl add_vhost augur_vhost && sudo rabbitmqctl set_user_tags augur augurTag administrator && sudo rabbitmqctl set_permissions -p augur_vhost augur ".*" ".*" ".*" - We need rabbitmq_management so we can purge our own queues with an API call - We need a user - We need a vhost - We then set permissions NOTE: it is important to have a static hostname when using rabbitmq as it uses hostname to communicate with nodes. RabbitMQ’s server can then be started from systemd: .. code:: shell sudo systemctl start rabbitmq-server If your setup of rabbitmq is successful your broker url should look like this: **broker_url = ``amqp://augur:password123@localhost:5672/augur_vhost``** RabbitMQ Developer Note: ~~~~~~~~~~~~~~~~~~~~~~~~ These are the queues we create: - celery (the main queue) - secondary - scheduling The endpoints to hit to purge queues on exit are: :: curl -i -u augur:password123 -XDELETE http://localhost:15672/api/queues/AugurB/celery curl -i -u augur:password123 -XDELETE http://localhost:15672/api/queues/AugurB/secondary curl -i -u augur:password123 -XDELETE http://localhost:15672/api/queues/AugurB/scheduling We provide this functionality to limit, as far as possible, the need for sudo privileges on the Augur operating system user. With sudo, you can accomplish the same thing with (Given a vhost named AugurB [case sensitive]): 1. To list the queues :: sudo rabbitmqctl list_queues -p AugurB name messages consumers 2. To empty the queues, simply execute the command for your queues. Below are the 3 queues that Augur creates for you: :: sudo rabbitmqctl purge_queue celery -p AugurB sudo rabbitmqctl purge_queue secondary -p AugurB sudo rabbitmqctl purge_queue scheduling -p AugurB Where AugurB is the vhost. The management API at port 15672 will only exist if you have already installed the rabbitmq_management plugin. **During Augur installation, you will be prompted for this broker_url** Proxying Augur through Nginx ---------------------------- Assumes nginx is installed. Then you create a file for the server you want Augur to run under in the location of your ``sites-enabled`` directory for nginx. In this example, Augur is running on port 5038: (the long timeouts on the settings page is for when a user adds a large number of repos or orgs in a single session to prevent timeouts from nginx) :: server { server_name ai.chaoss.io; location /api/unstable/ { proxy_pass http://ai.chaoss.io:5038; proxy_set_header Host $host; } location / { proxy_pass http://127.0.0.1:5038; } location /settings { proxy_read_timeout 800; proxy_connect_timeout 800; proxy_send_timeout 800; } error_log /var/log/nginx/augurview.osshealth.error.log; access_log /var/log/nginx/augurview.osshealth.access.log; } Setting up SSL (https) ~~~~~~~~~~~~~~~~~~~~~~ Install Certbot: :: sudo apt update && sudo apt upgrade && sudo apt install certbot && sudo apt-get install python3-certbot-nginx Generate a certificate for the specific domain for which you have a file already in the sites-enabled directory for nginx (located at ``/etc/nginx/sites-enabled`` on Ubuntu): :: sudo certbot -v --nginx -d ai.chaoss.io In the example file above. Your resulting nginx sites-enabled file will look like this: :: server { server_name ai.chaoss.io; location /api/unstable/ { proxy_pass http://ai.chaoss.io:5038; proxy_set_header Host $host; } location / { proxy_pass http://127.0.0.1:5038; } location /settings { proxy_read_timeout 800; proxy_connect_timeout 800; proxy_send_timeout 800; } error_log /var/log/nginx/augurview.osshealth.error.log; access_log /var/log/nginx/augurview.osshealth.access.log; listen 443 ssl; # managed by Certbot ssl_certificate /etc/letsencrypt/live/ai.chaoss.io/fullchain.pem; # managed by Certbot ssl_certificate_key /etc/letsencrypt/live/ai.chaoss.io/privkey.pem; # managed by Certbot include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot } server { if ($host = ai.chaoss.io) { return 301 https://$host$request_uri; } # managed by Certbot listen 80; server_name ai.chaoss.io; return 404; # managed by Certbot } Installing and Configuring Augur! --------------------------------- We use `uv `_ to manage Augur’s virtual environment and dependencies. Any time you run an Augur command, you should prefix it with ``uv run`` to ensure you are using the correct virtual environment. ``uv`` can be installed with pip: .. code:: shell pip install --user uv From the root of the Augur Directory, type ``make install``. You will be prompted to provide: - “User” is the PSQL database user, which is ``augur`` if you followed instructions exactly - “Password” is the above user’s password - “Host” is the domain used with nginx, e.g. ``ai.chaoss.io`` - “Port” is 5432 unless you reconfigured something - “Database” is the name of the Augur database, which is ``augur`` if you followed instructions exactly - The GitHub token created earlier - Then the username associated with it - Then the same for GitLab - and finally a directory to clone repositories to Post Installation of Augur -------------------------- Redis Broker Configuration ~~~~~~~~~~~~~~~~~~~~~~~~~~ If applications other than Augur are running on the same server, and using ``redis-server`` it is important to ensure that Augur and these other applications (or additional instances of Augur) are using distinct “cache_group”. You can change from the default value of zero by editing the ``augur_operations.config`` table directly, looking for the “Redis” section_name, and the “cache_group” setting_name. This SQL is also a template: .. code:: sql UPDATE augur_operations.config SET value = 2 WHERE section_name='Redis' AND setting_name='cache_group'; What does Redis Do? ^^^^^^^^^^^^^^^^^^^ Redis is used to make the state of data collection jobs visible on an external dashboard, like Flower. Internally, Augur relies on Redis to cache GitHub API Keys, and for OAuth Authentication. Redis is used to maintain awareness of Augur’s internal state. What does RabbitMQ Do? ^^^^^^^^^^^^^^^^^^^^^^ Augur is a distributed system. Even on one server, there are many collection processes happening simultaneously. Each job to collect data is put on the RabbitMQ Queue by Augur’s “Main Brain”. Then independent workers pop messages off the RabbitMQ Queue and go collect the data. These tasks then become standalone processes that report their completion or failure states back to the Redis server. **Edit** the ``/etc/redis/redis.conf`` file to ensure these parameters are configured in this way: .. code:: shell supervised systemd databases 900 maxmemory-samples 10 maxmemory 20GB **NOTE**: You may be able to have fewer databases and lower maxmemory settings. This is a function of how many repositories you are collecting data for at a given time. The more repositories you are managing data for, the close to these settings you will need to be. **Consequences** : If the settings are too low for Redis, Augur’s maintainer team has observed cases where collection appears to stall. (TEAM: This is a working theory as of 3/10/2023 for Ubuntu 22.x, based on EC2 experiments.) Possible EC2 Configuration Requirements ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ With virtualization there may be issues associated with redis-server connections exceeding available memory. In these cases, the following workarounds help to resolve issues. Specifically, you may find this error in your augur logs: .. code:: shell redis.exceptions.ConnectionError: Error 111 connecting to 127.0.0.1:6379. Connection refused. **INSTALL** ``sudo apt install libhugetlbfs-bin`` **COMMAND**: :: sudo hugeadm --thp-never && sudo echo never > /sys/kernel/mm/transparent_hugepage/enabled .. code:: shell sudo vi /etc/rc.local **paste** into ``/etc/rc.local`` .. code:: shell if test -f /sys/kernel/mm/transparent_hugepage/enabled; then echo never > /sys/kernel/mm/transparent_hugepage/enabled fi **EDIT** : ``/etc/default/grub`` add the following line: .. code:: shell GRUB_DISABLE_OS_PROBER=true Postgresql Configuration ------------------------ Your postgresql instance should optimally allow 1,000 connections: .. code:: shell max_connections = 1000 # (change requires restart) shared_buffers = 8GB # min 128kB work_mem = 2GB # min 64kB Augur will generally hold up to 150 simultaneous connections while collecting data. The 1,000 number is recommended to accommodate both collection and analysis on the same database. Use of PGBouncer or other utility may change these characteristics. Augur Commands -------------- To access command line options, use ``uv run augur --help``. To load repos from GitHub organizations prior to collection, or in other ways, the direct route is ``uv run augur db --help``. Start a Flower Dashboard, which you can use to monitor progress, and report any failed processes as issues on the Augur GitHub site. The error rate for tasks is currently 0.04%, and most errors involve unhandled platform API timeouts. We continue to identify and add fixes to handle these errors through additional retries. Starting Flower: ``(uv run nohup celery -A augur.tasks.init.celery_app.celery_app flower --port=8400 --max-tasks=1000000 &)`` NOTE: You can use any open port on your server, and access the dashboard in a browser with http://servername-or-ip:8400 in the example above (assuming you have access to that port, and its open on your network.) If you’re using a virtual machine within Windows and you get an error about missing AVX instructions, you should kill Hyper-V. Even if it doesn’t *appear* to be active, it might still be affecting your VM. Follow `these instructions `__ to disable Hyper-V, and afterward AVX should pass to the VM. Starting your Augur Instance ---------------------------- Start Augur: ``(uv run nohup augur backend start &)`` When data collection is complete you will see only a single task running in your flower Dashboard. Accessing Repo Addition and Visualization Front End --------------------------------------------------- Your Augur instance will now be available at http://hostname.io:port_number For example: http://chaoss.tv:5038 Note: Augur will run on port 5000 by default (you probably need to change that in augur_operations.config for OSX) Stopping your Augur Instance ---------------------------- You can stop augur with ``uv run augur backend stop``, followed by ``uv run augur backend kill``. We recommend waiting 5 minutes between commands so Augur can shutdown more gently. There is no issue with data integrity if you issue them seconds apart, its just that stopping is nicer than killing. Docker ~~~~~~ 1. Make sure docker, and docker compose are both installed 2. Modify the ``environment.txt`` file in the root of the repository to include your GitHub and GitLab API keys. 3. If you are already running postgresql on your server you have two choices: - Change the port mappings in the ``docker-compose.yml`` file to match ports for Postgresql not currently in use. - Change to variables in ``environment.txt`` to include the correct values for your local, non-docker-container database. 4. ``sudo docker build -t augur-new -f docker/backend/Dockerfile .`` 5. ``sudo docker compose --env-file ./environment.txt --file docker-compose.yml up`` to run the database in a Docker Container or ``sudo docker compose --env-file ./environment.txt --file docker-compose.yml up`` to connect to an already running database.