giannisp

After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

Database files have to be updated before starting the server, here are the steps that had to be followed:

# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
brew unlink postgresql
brew install postgresql@9.6
brew unlink postgresql@9.6
brew link postgresql

PyYoshi

$ sudo -i
# vim /etc/systemd/system/somaxconn1024.service
# systemctl enable somaxconn1024
# systemctl start somaxconn1024
# systemctl status somaxconn1024
# cat /proc/sys/net/core/somaxconn

euank

FROM golang:1.4

COPY entrypoint.sh /entrypoint.sh
COPY main.go main.go
RUN go build -o main main.go
RUN chmod +x /entrypoint.sh

EXPOSE 8080
ENTRYPOINT ["/entrypoint.sh"]
CMD ["./main"]

markrendle

Update, September 2016

OK, you can pretty much ignore what I wrote below this update, because it doesn't really apply anymore.

I wrote this over a year ago, and at the time I had spent a couple of weeks trying to get Kafka 0.8 working with .NET and then Node.js with much frustration and very little success. I was rather angry. It keeps getting linked, though, and just popped up on Hacker News, so here's sort of an update, although I haven't used Kafka at all this year so I don't really have any new information.

In the end, we managed to get things working with a Node.js client, although we continued to have problems, both with our code and with managing a Kafka/Zookeeper cluster generally. What made it worse was that I did not then, and do not now, believe that Kafka was the correct solution for that particular problem at that particular company. What they were trying to achieve could have been done more simply with any number of other messaging systems, with a subscriber reading messages off and writing

miguno

#!/usr/bin/env bash
#
# File:      kafka-move-leadership.sh
#
# Description
# ===========
#
# Generates a Kafka partition reassignment JSON snippet to STDOUT to move the leadership
# of any replicas away from the provided "source" broker to different, randomly selected
# "target" brokers.  Run this script with `-h` to show detailed usage instructions.

juliandunn

Deep Dive: PostgreSQL on AWS

When loading data

• disable backups (backup_retention=0)
• disable multi-AZ and autovacuum
• pg_dump -Fc (compressed) and pg_restore -j (parallel)
• Increase maintenance_work_mem

dznz

CREATE ROLE readonly LOGIN PASSWORD 'some_pass';
-- Existing objects
GRANT CONNECT ON DATABASE the_db TO readonly;
GRANT USAGE ON SCHEMA public TO readonly;
GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonly;
GRANT SELECT ON ALL SEQUENCES IN SCHEMA public TO readonly;
GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA public TO readonly;
-- New objects
ALTER DEFAULT PRIVILEGES FOR owner_user IN SCHEMA public GRANT SELECT ON TABLES TO readonly;
ALTER DEFAULT PRIVILEGES FOR owner_user IN SCHEMA public GRANT SELECT ON SEQUENCES TO readonly;

nocturnalgeek

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@reallymymail.com

dbrgn

Moved to https://github.com/dbrgn/drf-dynamic-fields

rcullito

{
    "query": {
        "bool": {
            "should": [
                {
                    "match": {
                        "_all": search_term
                    }
                },
                {