Category: Web & Network

Some changes on VPS

My site is moved to another VPS, but still with Linode. This time, it is at Fremont, CA. As I mentioned in my last post, the CPU is E5-2697 v4. There is a few changes on the default VPS. Turn on BBR. php opcache cache size from 128MB to 256MB MariaDB default collection from utf8mb4_general_ci

Change directives of Nginx

My new server uses Nginx as a web server. When I check the error log of it, I saw a lot of warnings. 2016/08/27 07:30:03 [warn] 11951#11951: *590544 an upstream response is buffered to a temporary file /var/cache/nginx/fastcgi_temp/3/28/0000008283 while reading upstream, client:, server:, request: “GET /download/file.php?id=109 HTTP/1.1”, upstream: “fastcgi://unix:/run/php/php7.0-fpm.sock:”, host: “” I did

Move to Linode Server

When you saw this post, it means the blog is moved to a new server at Linode. New server is a little bit better than the old one at DigitalOcean. Here is how old server looks like: Operating system     Ubuntu Linux 14.04.4 Kernel and CPU     Linux 3.13.0-88-generic on x86_64 Processor information     Intel(R)

SSL added

To provide higher security and better privacy protection, I added SSL certificate on my Blog, here. When you enter the url of my blog: http:///, it will redirect you to the SSL version, The certificate is purchased from , three years certificate of Comodo PositiveSSL. The latest price is $13.15/3years. Look at the

Web site of Burnaby City has SSL error

It is an error. When I enter the url of Burnaby City hall at Chrome browser on my cellphone, it displayed with error. Red crossing line on the https. It said Your connection is not private. Attackers might be trying to steal your information from NET::ERR_CERT_AUTHORITY_INVALID It is OK when I browse the site