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#
# Author: Wayne Pollock  pollock@acm.org
#
#   See: http://wpollock.com/AUnix2/specFileWithComments.htm
#

# A spec file contains a number of sections, in a specific order,
# each of which contains tags and/or data.  Comments and blank lines
# are ignored.  Tags are of the form "name:value".  The names of
# tags are not case-sensitive; white-space around the colon is optional.

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#
# postgres cluster in kubernetes with max 8 replicas
#
# the master is always on ${host}-0
#


#
# postgres master/slave configuration
#

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Guava -> Java 8 cheat sheet

This is a one way mapping. If you used to use Guava futures, you probably want to do the java 8 equivalent. This does not mean that the reverse mapping works.

Guava style	Java 8 style
Listenablefuture.addListener(callback)	future.whenComplete(callback)
Futures.addCallback(callback)	[future.whenComplete(callback)](https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletionStage.html#whenComplete-java.ut

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#!/usr/bin/env python

import json
import jsonschema
import urllib.request
import urllib.parse
import sys
import ssl

def load(path):

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            CREATE OR REPLACE FUNCTION inumber2path(bigint, bigint) RETURNS varchar AS $$
            DECLARE
                 inumber bigint := $1;
                 iroot bigint := $2;
                 path    varchar := '';
                 entry   record;
            BEGIN
                IF iroot = inumber
                THEN

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psu set regex off
psu set allpoolsactive off

psu create unit -store *@*
psu create unit -net 0.0.0.0/0.0.0.0
psu create unit -net 10.17.7.0/24
psu create unit -net ::/0
psu create unit -protocol */*

psu create ugroup any-protocol

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Useful links

• http://docs.oracle.com/javase/7/docs/api/
• http://docs.guava-libraries.googlecode.com/git-history/release/javadoc/index.html
• http://static.springsource.org/spring/docs/3.1.x/spring-framework-reference/html/ (in particular chapter 4)

Example 1

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Overview

• The Mover-Client connection is a binary connection which, TCP wise, may be initiated by either parties.
• The mover starts the communication by sending the Mover HELLO BLOCK (see below).
• All subsequent commands are initiated by the client.
• The protocol is limited to synchronous request-reply communication. Therefore a command can only be issued after the previous command was completed.
• The connection can either be in Command Mode, which is the initial mode, or in Data Transfer Mode.
• Each command has to be acknowledged immediately by an REQUEST ACK. The REQUEST ACK reports the request state and in some cases additional, request dependent arguments . (e.g. LOCATE)
• If the REQUEST ACK indicates success, the connection switches to Data Transfer Mode for READ and WRITE requests.
• In Data Transfer Mode the data is send in DATA CHAINS ( see below).

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Reporting dCache CPU & Memory usage with metricbeats

Pre-requisites

• Download and install Metricbeat. Use metricbeat-oss package, if you don't have xpack
• Download Jolokia's JVM agent

Enable Jolokia JVM agent