Diferencia entre revisiones de «Sysadmin»
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Línea 1: | Línea 1: | ||
== Network == | == Network == | ||
− | Check iptables rules | + | Check iptables rules ([https://www.linode.com/docs/security/firewalls/control-network-traffic-with-iptables source]) |
<pre>sudo iptables -L -nv</pre> | <pre>sudo iptables -L -nv</pre> | ||
Línea 7: | Línea 7: | ||
<pre>sudo iptables -I INPUT -s 196.52.32.4 -j DRO</pre> | <pre>sudo iptables -I INPUT -s 196.52.32.4 -j DRO</pre> | ||
− | Show all active connections to Web server – sorted and unique [https://www.blackmoreops.com/2014/09/25/find-number-of-unique-ips-active-connections-to-web-server/ source] | + | Show all active connections to Web server – sorted and unique ([https://www.blackmoreops.com/2014/09/25/find-number-of-unique-ips-active-connections-to-web-server/ source]) |
<pre> | <pre> | ||
netstat -antu | grep :80 | grep -v LISTEN | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | netstat -antu | grep :80 | grep -v LISTEN | awk '{print $5}' | cut -d: -f1 | sort | uniq -c |
Revisión del 06:45 12 jul 2017
Sumario
Network
Check iptables rules (source)
sudo iptables -L -nv
Ban ip with iptables
sudo iptables -I INPUT -s 196.52.32.4 -j DRO
Show all active connections to Web server – sorted and unique (source)
netstat -antu | grep :80 | grep -v LISTEN | awk '{print $5}' | cut -d: -f1 | sort | uniq -c
Utilities
MySQL backups
mysqldump -u USER -p your_database_name | gzip > your_database_name.sql
Postgresql
- Start server in OS X: pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
- Stop: pg_ctl -D /usr/local/var/postgres stop -s -m fast
- createuser USER
- createdb DB
Rails in production
- Deploy Rails App with Puma and Nginx via Mina
- Digital Ocean: Ubuntu, Nginx, Unicorn, Rails
- Ubuntu, Rails ready, with nginx & unicorn
SSH
Change default SSH port + Prevent root user from loging in via SSH
vi /etc/ssh/sshd_config PermitRootLogin no Port 50683 /etc/init.d/ssh restart ssh [email protected] -p 50683
Problems installing gems in Mac OS X
If error:
clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future]
Solution
ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future gem install ...
Data
Transform MS Access file to CSV https://github.com/brianb/mdbtools
Mumumío
IP en .Vagrantfile
vagrant up vagrant ssh cd /vagrant rails server
Deploy
merge de stage hacia develop, y luego de develop hacia master. Así:
git co develop git merge stage git co master git push # No te olvides del push! cap production deploy