sensu_check - Manage Sensu checks — Ansible Documentation
A better reference for Sensu checks then the Sensu docs themselves
sensu  documentation 
4 days ago
Why you should invest your time as wisely as your money | Oliver Burkeman | Life and style | The Guardian
> “If you don’t save a bit of your time for you, now, out of every week,” Abel writes, “there is no moment in the future when you’ll magically be done with everything and have loads of free time.”

So true
articles  news  life 
8 days ago
[OVZ-6136] nf_conntrack: falling back to vmalloc -
> During container start kernel allocates hash tables for conntracks.
These objects are quite huge, and requires one piece of several neighbour memory pages.
Heavily loaded node can have lot of 1 or 2-pages pieces but can be unable to merge them for creation of requested piece (so called memory fragmentation).
In such cases kernel switches to vmalloc allocateion, where required object combined from separate single pages. It however is danger situation, because vmalloc area is size-limited.
Node still works correctly in this situation, but following vmalloc-related allocation can fail in future.
So it makes sense for you to schedule maintenance for this node and reboot it.
After reboot, memory fragmentation disappear, and node huge objects will be correctly allocated successfully.
ovs  networking 
9 days ago
TroubleshootingNTP < Support < NTP
The very first column
contains the "tally code" character. Short overview:

* the source you are synchronized to (syspeer)
# source selected, distance exceeds maximum value
o the PPS(Pulse Per Second) source if your ntpd (ppspeer, only if you have a PPS capable system and refclock)
+ candidate, i.e. it is considered a good source
- outlyer, i.e. quality is not good enough
x falseticker, i.e. this one is considered to distribute bad time
blank: source discarded, failed sanity
7 weeks ago
dvtm || dynamic virtual terminal manager
I’m thinking of switching from Tmux. Laziness has kept me on tmux so far.

Also see:
software  console  terminal 
7 weeks ago
ANN RabbitMQ 3.6.x support timeline - Google Groups
We will continue doing 3.6.x releases until May 1st, 2018.
rabbitmq  mailing_list 
8 weeks ago
Issues · rabbitmq/rabbitmq-server
Useful to search with log snippets to see if anyone else has come across issues before.
8 weeks ago
NetBSD NPF Loading Kernel Modules when using SecureLevel
Finally learnt why my npf efforts had still failed on my Linode NetBSD even since switching to KVM (and in hindsight perhaps why I could never get it working on Xen): Because I use `securelevel` 1. Doh!

I now have the following in a `/etc/modules.conf`:


Just having `npf` was not enough as I'd get the following without `bpfjit`.

npfctl: source /usr/src/sys/net/npf/npf_ctl.c line 231
npfctl: npfctl_config_send: Invalid argument

And `bpfjit` requires `sljit` (check `modstat`). And `npf_alg_icmp` is required for the Application Level Gateway stuff.

Bizarrely, though, `npfctl reload` will still moan about `bpfjit` even with it, but it seems to actually work ok.

_I've also updated [this npf post]({% post_url 2016-12-23-npf-so-far %})_.

Originally posted at
10 weeks ago
Free IPv6 Tools | UltraTools
The expand and CIDR to range are handy.

I want a web based version of this though
ipv6  tools 
10 weeks ago
Too Many Ts - South City
Late to the game with these, but luckily still just in time to enjoy their debut album. This is *so* good and *all* good and I have listened to it Too Many Times already ;-)

_I share the love for 1992_

Originally posted at
november 2017
Open vSwitch Cheat Sheet
> ovs-ofctl dump-ports

Needs to be:

ovs-ofctl dump-ports --protocols=OpenFlow13

because of:
networking  network  ovs 
november 2017
One, two or three nodes in CloudAMQP - CloudAMQP
> In terms of the CAP theorem: Consistency is more expensive in terms of throughput or latency to maintain than availability. You will with three nodes get consistency but the clients that are connected to the paused node will not have "availability" in case of a net-split. There is a risk of some data becoming unavailable.
rabbitmq  cap  databases 
october 2017
Re: conflicting PLIST during install
> It sounds like your pkgdb got corrupted. Did you have any file system
issues or parallel pkg_add/pkg_deletes?
october 2017
Manage Indexes — MongoDB Manual 3.2
db.getCollectionNames().forEach(function(collection) {
indexes = db[collection].getIndexes();
print("Indexes for " + collection + ":");
mongodb  documentation  databases 
october 2017
[web-ui] Delete selected tables deletes database · Issue #6098 · rethinkdb/rethinkdb
r.db('rethinkdb').table('table_config').filter({db: "__deleted_database__"}).update({db: "new_db"})
rethinkdb  github 
october 2017
« earlier      
*nix 116 aberdeen advice ansys apple applescript applications archive archlinux art articles asme autodesk bad_science bearings blogs bugs business c camino car career chrome code colorsync command_line compose css css_tutorials_tricks_tips culture cycling databases dead_link design diy documentation downloads education elasticsearch electrical elixir email encryption engineering engineering_general_info entertainment erlang etcd excel fastener fea features fedora feed_me film firefox flickr fonts format:pdf formula_1 formula_student fortran forums from:feedafever fuel_injection funny g.i.n.e gd&t gems ggplot2 git github gmail google hardware haskell health help! hints&tips history home hosting howto html imovie_stuff intelligent_things_people_say interesting interviews inventor iphone irc irc_/_other_chat italian italy java javascript jekyll jobs kids l6s languages latex learning life linux mac mac_stuff magazine mailing_list main_page manual manufacturing materials maths mental_health metallurgy money mongodb movies music mutt mysql netbsd news non-linear oh!_canada oil&gas osx package pdf performance photography php pik pkgsrc plugins polaroid politics posse: postgresql power_train process_bw process_colour productivity proe programming python r rabbitmq recipes record_reviews reference repositories ruby rubyonrails science scm search security shoes sixsigma skating software sql ssh ssl stackexchangefavs stackoverflow statistics stress suspension sweave technology tex the_world_has_gone_mad threads tlobf_recommended to_sort tools top travel tutorial tutorials twitter uk uk_film_processing_labs uncategorized vba vcs via:popular video video_editing vim virtualbox web_apps web_browser web_design welding wiki windows windows_support wishlist work

Copy this bookmark: