I run several K8S cluster on EKS and by default do not setup inbound SSH to the nodes. Sometimes I need to get into each node to check things or run a one-off tool.
Rather than update my terraform, rebuild the launch templates and redeploy brand new nodes, I decided to use kubernetes to access each node directly.
- http://stackoverflow.com/questions/804115 (
rebase
vsmerge
). - https://www.atlassian.com/git/tutorials/merging-vs-rebasing (
rebase
vsmerge
) - https://www.atlassian.com/git/tutorials/undoing-changes/ (
reset
vscheckout
vsrevert
) - http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See
git rev-parse
) - http://stackoverflow.com/questions/292357 (
pull
vsfetch
) - http://stackoverflow.com/questions/39651 (
stash
vsbranch
) - http://stackoverflow.com/questions/8358035 (
reset
vscheckout
vsrevert
)
At some point you’ll find yourself in a situation where you need edit a commit message. That commit might already be pushed or not, be the most recent or burried below 10 other commits, but fear not, git has your back 🙂.
git commit --amend
This will open your $EDITOR
and let you change the message. Continue with your usual git push origin master
.
Picking the right architecture = Picking the right battles + Managing trade-offs
- Clarify and agree on the scope of the system
- User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?
### PowerShell template profile | |
### Version 1.03 - Tim Sneath <tim@sneath.org> | |
### From https://gist.github.com/timsneath/19867b12eee7fd5af2ba | |
### | |
### This file should be stored in $PROFILE.CurrentUserAllHosts | |
### If $PROFILE.CurrentUserAllHosts doesn't exist, you can make one with the following: | |
### PS> New-Item $PROFILE.CurrentUserAllHosts -ItemType File -Force | |
### This will create the file and the containing subdirectory if it doesn't already | |
### | |
### As a reminder, to enable unsigned script execution of local scripts on client Windows, |
Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.
$ python -m SimpleHTTPServer 8000
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |