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Peter Westlake's questions

Martin Hope
Peter Westlake
Asked: 2016-11-02 09:49:38 +0800 CST
  • 1

This property is an array, whose order does not matter. It's really a set, but Puppet doesn't have sets AFAICT. So I'm trying to use munge to sort the values:

newproperty(:things, :array_matching => :all) do  
  munge do |value|
    value.sort
  end
end

This fails, because the munge is applied to each of the values in the array instead of the whole thing. Is there any way to make this work?

puppet
Martin Hope
Peter Westlake
Asked: 2014-10-31 06:41:37 +0800 CST
  • 10

I'm running docker with a host directory mounted:

$ docker run -v /usr/groups/thing -ti imagename /bin/bash

Files in /usr/groups/thing/foo are accessible:

# ls /usr/groups/thing/foo
a b c

But files in /usr/groups/thing/bar are not:

# ls /usr/groups/thing/bar
ls: cannot open directory /usr/groups/thing/bar: Too many levels of symbolic links

This is on Debian, and /usr/groups/thing is an automounted NFS volume.

nfs
Martin Hope
Peter Westlake
Asked: 2013-11-12 10:15:57 +0800 CST
  • 0

I have the following requirements for replication:

  1. There is a primary server, which does all data modification.
  2. There is a secondary server, usable for read-only queries, up-to-date within a minute or so.
  3. The primary can access the secondary over the network, but the secondary cannot reach the primary.

The one-way access requirement is the one that causes the difficulty for the replication methods described in the documentation.

Ideally the solution should work using packages available in Debian Stable.

postgresql
Martin Hope
Peter Westlake
Asked: 2010-02-28 03:05:53 +0800 CST
  • 7

Given how important it is to have different passwords for different systems, how does a data centre with thousands of servers manage? I'm only managing a few dozen machines at the moment, but the number tends to grow, especially virtual machines. If you clone a VM, it will have the same password, and if that's part of an automated workflow, there isn't much chance to change it. If you automate changing the passwords, that needs to be done securely, and you're back to a single point of failure. So, what do people do?

I should explain that the problem isn't thinking of passwords (there are plenty of password generators for that) but having an efficient process for setting and recording them, especially when the machines are created automatically.

password password-management