Setting up a passwordless SSH connection is great, it helps you automate tasks that require connections to different servers by removing the need to enter passwords. You generate a private and public keypair on the source server then copy the public to the target server and connect away. Things don’t…
We were setting up a new server with NGINX in reverse proxy when we got the dreaded 502 | Bad Gateway error. Checking the NGINX error log gave us the following error: upstream sent too big header while reading response header from upstream This occurs when NGINX receives a header…
We got this error on a server we were tasked with for recovery MySQL server’s root password: mysqld_safe Directory ‘/var/run/mysqld’ for UNIX socket file don’t exists The fix for this turns out to be pretty straight forward, the directory it complains about doesn’t exist. Create the directory and all is…
We recently migrated a client website to a new server and encountered the following error when trying to import their database: ERROR 1118 (42000) at line 2663: Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row…
We’re running Atomicorp’s Workload Security, previous known as Atomic Secure Linux, and have started getting the following error whenever we restart any service. ** (pkttyagent:112415): WARNING **: 12:49:43.934: Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject Error registering authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject (polkit-error-quark,…
This error indicates that there is a problem with communication between the Nginx server and the backend server it is proxying to. upstream timed out (110: Connection timed out) while reading response header from upstream, client: X.X.X.X | 504 Gateway Timeout From the error we can gather that the backend…
GoAccess is a web log viewer and analyzer, it also parses logs in realtime. This comes specially handy when you need to understand the traffic your server is getting. While installing GoAccess on a new server we got the following error: configure: error: *** Missing development files for the GeoIP…
We recently had to deploy a wildcard SSL certificate to an Microsoft Azure web app. The company we buy our certs from, issues them in .crt format by default, we have to convert them to .pfx ourselves. This isn’t a big deal and we’re going to see how to do…
We recently needed to upgrade a server from MySQL 5.7 to MariaDB 10.3 and one of the key steps in doing so is to disable strict mode after the upgrade. By default, MariaDB enables strict mode from version 10.2 and onwards. Having this enabled can cause various issues, a few…
We got this error when trying to install ZFS on a server recently: Error: Package: kmod-zfs-0.7.13-1.el7_6.x86_64 (zfs-kmod) Requires: kernel(posix_acl_valid) = 0x7add44b5 Installed: kernel-3.10.0-1127.19.1.el7.x86_64 (@updates) kernel(posix_acl_valid) = 0xc89bfa92 Available: kernel-3.10.0-1127.el7.x86_64 (base) kernel(posix_acl_valid) = 0xc89bfa92 Available: kernel-3.10.0-1127.8.2.el7.x86_64 (updates) kernel(posix_acl_valid) = 0xc89bfa92 Available: kernel-3.10.0-1127.10.1.el7.x86_64 (updates) kernel(posix_acl_valid) = 0xc89bfa92 Available: kernel-3.10.0-1127.13.1.el7.x86_64 (updates) kernel(posix_acl_valid) =…