BretFisher

Replace your Swarm Manager and Workers with updated versions of docker

• it's best to replace nodes, don't do apt/yum upgrades.
• both would work, but VM replacment forces me to think of it as immutable and prevents making pets
• if you don't want to update join scripts for manager IP's, then do something like Elastic IP's so manager IP's won't change.

Lets assume you have 3 managers and 3 workers on 17.06 and you want to update to 17.12

• managers: m1, m2, m3

yonglai

---
- name: Install docker
  gather_facts: No
  hosts: default

  tasks:
    - name: Install yum utils
      yum:
        name: yum-utils
        state: latest

overdrive3000

Search a string across commits

git log -S <string to find> --source --all

To find all commits that added or removed the fixed string string to find. The --all parameter means to start from every branch and --source means to show which of those branches led to finding that commit.

Find branches the commit is on

git branch --contains <commit>