cheethoe

# This will use osd.5 as an example
# ceph commands are expected to be run in the rook-toolbox
1) disk fails
2) remove disk from node
3) mark out osd. `ceph osd out osd.5`
4) remove from crush map. `ceph osd crush remove osd.5`
5) delete caps. `ceph auth del osd.5`
6) remove osd. `ceph osd rm osd.5`
7) delete the deployment `kubectl delete deployment -n rook-ceph rook-ceph-osd-id-5`
8) delete osd data dir on node `rm -rf /var/lib/rook/osd5`

detiber

CFSSL as an external CA for non-ha kubeadm intialized clusters

Using cfssl to Create an External CA Infrastructure

Install cfssl

# This requires an existing Go environment with GOPATH set
go get -u github.com/cloudflare/cfssl/cmd/...

bobrik

Overly aggressive CFS

We're looking at CPU bandwidth control via CFS:

• https://www.kernel.org/doc/Documentation/scheduler/sched-bwc.txt

Reproduction program

Program does number of iterations, in each iteration we burn CPU in small chunks until we get 5ms of real time spent. On each iteration we also print how much

innovia

#!/bin/bash
set -e
set -o pipefail

# Add user to k8s using service account, no RBAC (must create RBAC after this script)
if [[ -z "$1" ]] || [[ -z "$2" ]]; then
 echo "usage: $0 <service_account_name> <namespace>"
 exit 1
fi

rtmie

ceph auth get-or-create client.kube mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=kubernetes' -o /etc/ceph/ceph.client.kube.keyring

fengxsong

package main

import (
	"bytes"
	"context"
	"crypto/tls"
	"encoding/base64"
	"encoding/json"
	"encoding/pem"
	"flag"

DianaEromosele

$ git remote rm origin
$ git remote add origin git@github.com:aplikacjainfo/proj1.git
$ git config master.remote origin
$ git config master.merge refs/heads/master

dedy-purwanto

# There was a day where I have too many color schemes in iTerm2 and I want to remove them all.
# iTerm2 doesn't have "bulk remove" and it was literally painful to delete them one-by-one.

# iTerm2 save it's preference in ~/Library/Preferences/com.googlecode.iterm2.plist in a binary format
# What you need to do is basically copy that somewhere, convert to xml and remove color schemes in the xml files.

$ cd /tmp/
$ cp ~/Library/Preferences/com.googlecode.iterm2.plist .
$ plutil -convert xml1 com.googlecode.iterm2.plist
$ vi com.googlecode.iterm2.plist

cedricvidal

#!/bin/bash
# herein we backup our indexes! this script should run at like 3 AM every first day of the month, after logstash
# rotates to a new ES index and theres no new data coming in to the old one. we grab metadatas,
# compress the data files and backs up to whatever long term storage.

. ./config.sh

echo "Checking that index exist in ES"
if [ `curl -sI $ESURL/$INDEXNAME | grep OK | wc -l` -eq 0 ]
then