ajayhn

1. timeout when publishing to ifmap-server (mapclient.call())
   when timeout happens keep retrying
2. ifmap-server code needs to inspect healthcheck object publish and if it misses n of them, exit() OR
     config-nodemgr keeps reading healthcheck object from ifmap-server and if it can't read in n secs or value is stale, kill ifmap-server
3. control-node keeps reading healthcheck object from ifmap and it sees stale, move to a new ifmap-server
4. ifmap-publish-greenlet enqueue finds q-full, no change from current

epcim

# install:
# wget https://gist.githubusercontent.com/epcim/e488af8be69b616eab3088a14a937e14/raw/salt-trends.sh -O salt-trends.sh; chmod +x *.sh

# salt state execution results: (use with/without test=true, -b2, etc..)
# apt install -y jq colordiff
salt \* state.apply --out=json --static test=true -b15 |  jq -r 'to_entries | map({ key:.key, value: { total: [.value[]]|length ,   
 succeed: [select(.value>={})|.value[]|select(.result? == true )]|length,                                                          
 failed: [select(.value>={})|.value[]|select(.result? == false)]|length,                                                           
 null:   [select(.value>={})|.value[]|select(.result? == null)]|length,                                                            
 changes: [select(.value>={})|.value[]|select(.changes?|length > 0)]|length } }) | from_entries ' |\                               

Titerote

---
systemd:
  units:
    - name: etcd2.service
      enable: true
      dropins:
        - name: 40-etcd-cluster.conf
          contents: |
            [Service]
            Environment="ETCD_NAME={{.etcd_name}}"

epcim

#!/bin/bash

# wget https://gist.githubusercontent.com/epcim/b44b548cadc566fcabc9f6195a19b1dc/raw/byobu-salt.sh -O byobu-salt.sh; chmod +x *.sh
# set -x

# TODO
# on remote host source ~/.${SHELL}rc
# auto set -o vi

test -n SSH_AGENT || {

dsdenes

#!/bin/bash

sudo apt-get update
sudo apt-get install apt-transport-https ca-certificates
sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
sudo echo deb https://apt.dockerproject.org/repo ubuntu-xenial main > /etc/apt/sources.list.d/docker.list
sudo apt-get update
sudo apt-get purge lxc-docker docker.io
sudo apt-get install linux-image-extra-$(uname -r)
sudo apt-get install docker-engine

eferro

AWS Golang SDK examples

epcim

#!/bin/bash
test -n SSH_AGENT || {
  eval $(ssh-agent -s)
  ssh-add
}

#create session
byobu-tmux new-session -dn $(hostname -f) "sudo -i"

# populate from salt-key

olih

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

bastman

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

SmartFinn

OpenVPN Server and certificate management on MikroTik

Contents

• Setup OpenVPN server and generate certificates
• Add a new user
• Setup OpenVPN client
• Decrypt private key to avoid password asking (optional)
• Delete a user and revoke his certificate
• Revert OpenVPN server configuration on MikroTik