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RELEASE=$1
mkdir /tmp/iosevka-font/$RELEASE
cd /tmp/iosevka-font/$RELEASE

wget https://github.com/be5invis/Iosevka/releases/download/v$RELEASE/ttf-iosevka-$RELEASE.zip
wget https://github.com/be5invis/Iosevka/releases/download/v$RELEASE/ttf-iosevka-aile-$RELEASE.zip
wget https://github.com/be5invis/Iosevka/releases/download/v$RELEASE/ttf-iosevka-etoile-$RELEASE.zip
wget https://github.com/be5invis/Iosevka/releases/download/v$RELEASE/ttf-iosevka-fixed-$RELEASE.zip
wget https://github.com/be5invis/Iosevka/releases/download/v$RELEASE/ttf-iosevka-fixed-slab-$RELEASE.zip
wget https://github.com/be5invis/Iosevka/releases/download/v$RELEASE/ttf-iosevka-slab-$RELEASE.zip

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geo $limited {
    default 1;
    xxx.xxx.xxx/xx 0;
}

map $limited $limit {
    1 $binary_remote_addr;
    0 "";
}

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create sequence enrollment_enrollmentcompany_id_seq;
select max(id) from enrollment_enrollmentcompany;
select setval('enrollment_enrollmentcompany_id_seq', 609, true);
alter table enrollment_enrollmentcompany alter column id set default nextval('enrollment_enrollmentcompany_id_seq');

-- Option 2
CREATE sequence enrollment_enrollmentcompany_id_seq owned by enrollment_enrollmentcompany.id;
SELECT setval(pg_get_serial_sequence('"enrollment_enrollmentcompany"','id'), coalesce(max("id"), 1), max("id") IS NOT null) FROM "enrollment_enrollmentcompany";
ALTER TABLE "enrollment_enrollmentcompany" ALTER COLUMN "id" SET DEFAULT nextval(pg_get_serial_sequence('"enrollment_enrollmentcompany"','id'));

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rsync -havzP -e "ssh -i /home/deploy/xxxxx.pem" root@x.x.x.x:/home/deploy/complete-path/ /home/deploy/complete-path/

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email_message = EmailMultiAlternatives(
    subject='subject',
    body='some text',
    from_email='example@example.com',
    to=['example@example'],
)
email_message.attach_alternative(render_to_string('email.html', context), 'text/html')
email_message.mixed_subtype = 'related'

# Image

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Setup master server:

base: https://medium.com/omis-engineering/django-multiple-database-system-using-postgresql-master-slave-database-architecture-f71d4e9e53ba

Create a user for the replication:

$ psql postgres
postgres=# CREATE USER replica REPLICATION LOGIN ENCRYPTED PASSWORD 'so-secret';

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{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "ListAllBuckets",
            "Effect": "Allow",
            "Action": [
                "s3:ListAllMyBuckets",
                "s3:GetBucketLocation"
            ],

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1. Remove old migrations file
find . -path "*/migrations/*.py" -not -name "__init__.py" -delete
find . -path "*/migrations/*.pyc"  -delete

2. Make migrations again
python manage.py makemigrations

3. Truncate django_migrations table
TRUNCATE TABLE django_migrations;

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sudo nano /etc/X11/xorg.conf

Section "ServerFlags"
Option "blank time" "0"
Option "standby time" "0"

Option "suspend time" "0"
Option "off time" "0"
EndSection

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Running adhoc commands on multiple servers

Example host file

Using the following /etc/ansible/hosts file:

[app]
192.168.60.4  ansible_user=deploy
192.168.60.5  ansible_user=deploy