If you have a PostgreSQL dump in the custom format you can can view the text format dump (plain SQL...
There are two ways within systemd to manage the fact that you need the gluster service active before mounting the...
If freshclam updates are failing even though the update servers are available and you find error messages like the following...
If you have a single node elasticsearch instance and indices with replicas enabled your cluster state will be yellow. If...
This should not be necessary in any case and is only for special cases, for e.g. if the assets...
With passenger-status --show=requests you can get a huge JSON showing current information about the running passenger processes.
If one etcd node is no longer a member of the remaining etcd cluster or fails to connect you need...
You can use wscat: sudo apt-get install node-ws # wscat -c ws://echo.websocket.org connected (press CTRL+C to quit...
This card is just about creating simple PostgreSQL dumps. This is no instruction for a backup strategy nor a guide...
Hint This applies only to distributions based on Debian. Requirement You need to setup the PostgreSQL Apt Repository first.
on the bash (issued as postgres user) Start/Stop/Restart PostgreSQL pg_ctl -D $configdir start|stop|restart Start/Stop/Restart the corresponding PostgreSQL...
If you're trying to start a cloud-init based Ubuntu VM with KVM you will suffer long boot times...
Hint You're not able to control which redis replica will chosen for the failover. Connect to your sentinel instance...
Because systemd is the greatest thing ever it's not enough to stop the libvirt service. You need to disable...
When receiving a new SSL-Certificate for an existing SSL-key it should be checked that they match cryptographically.
You will need to look here and find your own device. Look for the "bootable CD" download, which will give...
To see all jails: fail2ban status Our $JAIL is usually ssh. To see which IPs are banned currently: fail2ban-client...
Don't use exec without user parameter If you use exec without user parameter, the command will get executed as...
Create htpasswd entry and print to stdout: $ sudo apt install apache2-utils # Optional $ htpasswd -n $USERNAME New password:
If you want to perform a failover on another haproxy backend server this is the way you should do it...
If you try to restart you may encouter the problem that your networking connection gets shutdown but not start again...
Brendan Gregg is the Linux performance god. Use the information in this link to find out what ways there are...
We want to make the following firewall rule to be applyable to different network interfaces (for e.g. different environments...
The puppet server caches custom functions. If you edit an existing function (e.g. while you’re developing it), you’ll...