Linux and Containers Cheat Sheet

lxc-ls	List all containers
lxc-attach -n <name>	Enter the named container
lxc-start	Start and attach
lxc-start -d	Start in background - no login
lxc-clone <source> <target>	Clone container
lxc-destroy	Remove container & contents
lxc-netstat	Run netstat for a container
lxc-ps	List processes
lxc-stop	Stop Container
lxc-freeze	lxc-freeze - freeze all the container's processes

# Note: all commands take -n as parameter to specify the container

systemctl start	Start a service
systemctl stop	Stop a service
systemctl reload	Reload configuration for running service
systemctl restart	Restart service
systemctl reload-or-restart	Reload or Restart
systemctl status	Get service status
systemctl enable	Enables a service
systemctl disable	Disables a service
systemctl is-active	Check if service is active
systemctl is-enabled	Check is enabled at boot

systemctl takes the service name as an arguement

sudo -u postgres psql postgres	Run postgres as postgres user
\l	List Databases
\du	List roles
\c <databasename	Connect to database name
\dt	List tables in current database
\dt ..	List tables globally
\dn	List schemas
\d <tablename>	List columns of table

init 6	Gracefully reboot
shutdown -r now "reason"	Gracefully reboot & log
iostat <refresh interval>	Disk utilization
ss -l	Currently listening sockets
sar 1 <interval>	Cpu stats
sar -b <interval> <repeat>	/O stats every x seconds x times

curl -XPOST 'localhost:9200/_flush/synced' 1 curl -XPOST 'localhost:9200/_flush/synced'

curl -XPOST 'http://localhost:9200/_cache/clear'

curl -XPUT localhost:9200/_cluster/settings -d '{ "transient" :{ "cluster.routing.allocation.node_concurrent_recoveries" : 6 } }';echo

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Linux and Containers Cheat Sheet by iain.alexander