https://confluence.oceanobservatories.org/download/attachments/21205028/2110-00001_CMP_CI.pdf
http://www.cisco.com/c/en/us/support/docs/availability/high-availability/15111-configmgmt.html
http://itsm.certification.info/config2.html
https://www.cmcrossroads.com/question/what-numbering-scheme-use-naming-cm-items
A collection of links to useful cheat sheets.
Only what's properly printable can get a spot at the top of this list. It should also be small enough to fit on a few pages. almost all links in this document were designed by their creators so that YOU can print them in a good-looking format and store them however is best for you. Anything that isn't really something you could print in A4/UfS Letter format, but is still a well-made cheatsheet can get a spot at the end of the page.
Pleae contribute any you remember you've seen and liked. It would be wonderful if we can get these to be something more commonly made.
| -------------------------------------- | |
| ||| Test return to stable state | |
| -------------------------------------- | |
| ||| External Fault injection tests | |
| -------------------------------------- | |
| ||| System health | |
| -------------------------------------- | |
| \========/ | |
| Below: \ / | |
| "insufficient tests for OS code |
Install a mixed update for Leap42.1
consisted of 106 packages including kernel update and a very slow samba update script
Try prefetching the updates (i.e. an hour before the downtime)
Try disabling deltaRPM
Caches NOT dropped, all packages likely to stay in cache on today's servers.
VM size:
I have ssh connections from multiple users. I want to log all connectsion except those from the user 'git'. How dow you create an exception to a filter ?
input {
file {
path => "/var/log/auth.log"
type => "syslog"
}
}
| ## server: cacert | |
| ## client: letsencrypt | |
| TLS Enable = yes | |
| TLS Require = yes | |
| TLS CA Certificate File = /etc/letsencrypt.sh/certs/host.domain.tld/chain.pem | |
| TLS Certificate = /etc/letsencrypt.sh/certs/host.domain.tld/cert.pem | |
| TLS Key = /etc/letsencrypt.sh/certs/host.domain.tld/privkey.pem | |
| TLS CA Certificate Dir = /etc/ssl/certs |
An attempt to explain where exactly we can improve things.
From someone with hope, but without even the smallest grain of illusion.
I could just say "well, it was US who carried VMS to it's grave!"
It wouldn't help much. We're definitely looking at long-solved problems that aren't solved any longer due to design limitations in our OS and application integrations.
The question is how to get around it.
50 years of reliability engineering
Large-scale systems like power grids, chemical processing, nuclear power,
traffic control or air and space travel have been around for quite some time.
Most of these are still larger than what we manage, but we are catching up.
Modern deployment methods and better schedulers allow for more scalability,
| put the valves on ground floor | |
| in shielded rooms |