понедельник, 8 декабря 2014 г.

Semi-irregular Sysadmin Ninja's Github Digest (Vol. 16)

Ok, I'm still trying to finish with my old drafts and return to normal, weekly issues. Let's go!

1. devopsbookmarks.com
Website of devopsbookmarks.com http://www.devopsbookmarks.com

Cool new website which tries to collect all modern DevOps tools in one place (open-source and commercial too). And what is most exciting - everyone can participate through Github. :)

2. using-ngxlua-in-upyun
2014 Beijing OSC
It's also not standalone repo, but just code repo for this presentation from some Chinese conference. If you're interesting in Nginx + Lua / Openresty - check it out, quite good intro to subject. Don't afraid, it's in English - 

3. sshrc
bring your .bashrc, .vimrc, etc. with you when you ssh
If you're making some remote admin tasks on "not your" servers from time to time you're usually quite frustrated that working environment there is not like perfectly crafted precious configs. You can fix that problem with that script, but beware of big Vim plugins - they're need to be transferred to your home dir on remote host during every login.

4. tmux-resurrect
Persists tmux environment across system restarts.
Doing exactly that was promised - "saves all the little details from your tmux environment so it can be completely restored after a system restart (or when you feel like it). No configuration is required. You should feel like you never quit tmux."

5. Openstackgeek
StackGeek OpenStack Deploy
"StackGeek provides these scripts and this guide to enable you to get a working installation of OpenStack Icehouse going in about 10 minutes."
Nuff said.

6. weave
The Docker Network
Very interesting project, missing part of Docker, really. Networking is still weakest part of Docker IMO, and this project will help you with creation of virtual networks for your containers:

7. ZeroTierOne
Create flat virtual Ethernet networks of almost unlimited size. https://www.zerotier.com/
This project is similar with previous one, but main target of it is "normal" VMs and clouds and not containers. Looks quite mature and feature-full.

8. msr-cloud-tools
MSR Cloud Tools
Again, another tools from Brendan Gregg. For this time you can check is your cloud "hardware" support TurboBoost or read CPU temperature directly from CPU's MSRs (Model Specific Registers).

9. pcstat
Page Cache stat: get page cache stats for files on Linux
Yes, that tool can show for given file how many memory pages lies in Linux' file cache. Nice to know for tuning DBs, e.g. Cassandra (that's why it was written for). Not like very new tool, you can use fadvise tool from https://code.google.com/p/linux-ftools/ too - but Go code looks prettir IMO.
Also TIL mincore(2) syscall on which both tolls were based on.

10. lsleases
list assigned ip from any device in your network

Simple DHCP sniffer - will list all IP/MACs from devices in your network. Could be useful.

11. inspeqtor
Monitor your application infrastructure!

"Famous" inspector tool - modern rewrite of Monit on Go language with extended syntax and commercially available extension (because of which it was DMCAed by Monit developers first, but they're dismissed their claim after)

12. puppet-catalog-diff
Tool to diff Puppet catalogs

"A tool to compare two Puppet catalogs. While upgrading versions of Puppet or refactoring Puppet code you want to ensure that no unexpected changes will be made prior to doing the upgrade."
Very useful tool for upgrade Puppet between versions, indeed.

13. logsend
Logsend is high-performance tool for processing logs

"This like Logstash but more tiny and written by Golang. Supported outputs: influxdb, statsd and
MySQL". If you need some tool for log processing, but logstash looks somewhat bloated - check it out.

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