Networking, system administration and more
Networking, system administration and more
These instructions can be used to get the LibreNMS Docker container working with SSO (OpenID) using Authentik. It is assumed that you already have a working Authentik setup. You will need to have SSL for the LibreNMS interface and it is assumed below that LibreNMS is running on the hostname […]
Read moreAfter making a change to a GitLab configuration file I ran the gitlab-ctl reconfigure command and got this error: GitLab is managing the SSL certificates from LetsEncrypt using ACME in this case. Checking the existing certificate I could see that it was working up until recently so it seems to […]
Read moreAccessing the Java Dell iDRAC 6 virtual console in 2021 is very painful; various Java security enhancements have ensured that the legacy iDRAC console connections will no longer be working. To fix this there is a simple work around – the old encryption algorithms need to be allowed in the […]
Read moreWhile updating some servers I ran into an issue when updating the available packages. These servers are using the third party repository packages.sury.org to get alternative PHP releases. The error was: Some sources suggested replacing the GPG key in /etc/apt/trusted.gpg.d/php.gpg: [SOLVED] The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic […]
Read moreAfter ugrading Kubuntu 20.10 (Groovy) to 21.04 (Hirsute), I started getting the following error when trying to build any Docker containers: Various Googling pointed to the result; simply installing the gnome-keyring package resolved the problem: After doing that everything worked as expected. EDIT: After using the OS some more, I […]
Read moreAt the time of writing, the Linode Longview agent is not working with MariaDB 10.5 onwards. This happens because there is a hard coded binary name in the Perl script responsible for determining if MySQL monitoring is required; from MariaDB 10.5 the binary name has changed from mysqld to mariadbd. […]
Read moreWhen attempting to install a Juniper vMX router (release 18.3R1-S1.4) on a newly installed Centos 7.2 host I got the following error: When I checked the supported machine types with /usr/libexec/qemu-kvm -machine help everything looked fine, pc-i440fx-rhel7.0.0 was listed as the default: The error gmem.c:489: custom memory allocation vtable not […]
Read moreUPDATE: A new copy of the i40e driver has been provided by Juniper (unofficially). You can try this at your own risk, see here for details. When using a Juniper vMX with a Intel X520 or Intel X710 based card and SR-IOV, under load the vFPC may crash. This seems […]
Read moreRecently Juniper has released version 18.2R1 of the vSRX appliance. When I have tried to deploy the OVA file on an ESXi 6.7 host the deployment failed. The first indication of an issue is on step 5 of creating a new virtual machine, the deployment type shows as “undefined – […]
Read moreDuring an install of the Network Policy and Access Services role on a server I was getting the error code 0x800f0922 and the installation was failing. The error from the Add Roles and Features wizard looked like this: To install it instead I had to run the following commands from […]
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