Category Archives: Hosting

Meltdown & Spectre – CentOS

CentOS, Hosting, Linux

This is, for what I’v read about, the two main things that we need to have updated…

kernel-3.10.0-693.11.6.el7.x86_64
microcode_ctl-2.1-22.2.el7.x86_64

Check them trought uname -r and dmesg | grep microcode

 

[root@sd-56969 www]# systemctl status microcode -l
● microcode.service - Load CPU microcode update
 Loaded: loaded (/usr/lib/systemd/system/microcode.service; enabled; vendor preset: enabled)
 Active: inactive (dead) since Fri 2018-01-05 17:43:08 CET; 1 weeks 6 days ago
 Process: 692 ExecStart=/usr/bin/bash -c grep -l GenuineIntel /proc/cpuinfo | xargs grep -l -E "model[[:space:]]*: 79$" > /dev/null || echo 1 > /sys/devices/system/cpu/microcode/reload (code=exited, status=0/SUCCESS)
 Main PID: 692 (code=exited, status=0/SUCCESS)

Jan 05 17:43:08 sd-56969 systemd[1]: Starting Load CPU microcode update...
Jan 05 17:43:08 sd-56969 systemd[1]: Started Load CPU microcode update.

 

 

 

dashboard for VMware, SNMP, REST API and more

Big Data, Freebies, Hosting, Linux, Metrics, nagios, Utilities
Simple dashboard system for sysadmins with modules for VMware, SNMP, REST API and more

SysAdminBoard is a simple dashboard system written in Python, HTML and Javascript and served on a simple CherryPy Webserver (included). It was originally written to reformat snmp data for the Panic Statusboard iPad App, but has since become a fully stand-alone project that can grab data from a variety of sources and render charts and graphs in a web browser.

Discourse – email and Job exception: Net::ReadTimeout

Hosting, Linux, Sh*ts

 

Email

For a Discourse instance to function properly Email must be set up. Use the SMTP_URL env var to set your SMTP address, see sample templates for an example. The Docker image does not contain postfix, exim or another MTA, it was omitted because it is very tricky to set up correctly.

Source: https://github.com/discourse/discourse_docker

Yah! Discourse doesn’t came with any MTA (mail transfer agent).
I had to install Postfix so that Discourse could send out emails.

My emails weren’t getting delivered…
I was getting the following error on discourse logs(/var/discourse/shared/standalone/log/rails/production.log)….

Job exception: Net::ReadTimeout

After a few tweaks… I got it working…
This is my /var/discourse/containers/app.yml excerpt….

## TODO: List of comma delimited emails that will be made admin and developer
 ## on initial signup example '[email protected],[email protected]'
 DISCOURSE_DEVELOPER_EMAILS: '[email protected]'

## TODO: The SMTP mail server used to validate new accounts and send notifications
 DISCOURSE_SMTP_ADDRESS: mail.domain.com
 DISCOURSE_SMTP_PORT: 25
 DISCOURSE_SMTP_USER_NAME: [email protected]
 DISCOURSE_SMTP_PASSWORD: XXXXXXX
 DISCOURSE_SMTP_ENABLE_START_TLS: false
Rebuild the APP
cd /var/discourse/
./launcher rebuild app
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