This is, for what I’v read about, the two main things that we need to have updated…
Check them trought uname -r and dmesg | grep microcode
[[email protected] 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: Starting Load CPU microcode update...
Jan 05 17:43:08 sd-56969 systemd: Started Load CPU microcode update.
Most of my servers and my client’s servers are hosted @ online.net.
Online.net has posted a nice blog post about their infrastructure….
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.
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_USER_NAME: [email protected]
Rebuild the APP
./launcher rebuild app
While I was unzipping a 72Gb file I got the following errors…
bad zipfile offset (local header sig):
I had to install default-jdk and then use jar.
jar -xf filename.zip
So what’s changed in the last 2 years? Besides replacing some servers and network gear, not much. Here’s a top-level list of hardware that runs the sites today (noting what’s different since 2013):
4 Microsoft SQL Servers (new hardware for 2 of them)
11 IIS Web Servers (new hardware)
2 Redis Servers (new hardware)
3 Tag Engine servers (new hardware for 2 of the 3)
3 Elasticsearch servers (same)
4 HAProxy Load Balancers (added 2 to support CloudFlare)
2 Networks (each a Nexus 5596 Core + 2232TM Fabric Extenders, upgraded to 10Gbps everywhere)
2 Fortinet 800C Firewalls (replaced Cisco 5525-X ASAs)
2 Cisco ASR-1001 Routers (replaced Cisco 3945 Routers)
2 Cisco ASR-1001-x Routers (new!)
Full article http://nickcraver.com/blog/2016/02/17/stack-overflow-the-architecture-2016-edition/