existAfter purchasing a VPS you should spare security measuresAs we mentioned with fail2ban To protect ssh ，So even without changingsshPort (default is22），Also can be done to avoid brute force password，Of course，We have opened the credentials to log in and closed the ssh password login option，But with fail2ban Kill those who keep trying to make us feel bot is also a pleasant thing[……]
Linux
UB、RH、LD、FB……
Today Gerber drop-off certificate expired，I have written beforeHow to add https support with letsencrypt to blog，And teach you to write a regular update service at the end of the article，So you do not own every three months to update the manual。
but，If your certificate to expire，So in fact letsencrypt robot will send you a reminder email，The general content like this：[……]
Update：upgrade Ubuntu 20.04 LTS Rear，csf is not working，Prompt that iptables cannot be found：
|
1 |
Testing ip_tables/iptable_filter...open3: exec of /sbin/iptables -I OUTPUT -p tcp --dport 9999 -j ACCEPT failed: No such file or directory at /usr/local/csf/bin/csftest.pl line 144. |
This is because Ubuntu 20.04 LTS Changed iptables Related command position，The csf script is not updated in time。[……]
Background account
Before everyone wrote OwnCloud build private clouds with personal Articles，Until now, network disk have been out of service for some time，From now on ownCloud The team also abandoned pit，All switched to develop a new network drive”NextCloud“。
ownCloud version number has been maintained at[crayon-67ee9e2[……]
IOS app backend server to do，It needs to be done to support the ipv6，although 6 Almost do not use in China，Unfortunately Apple is now requiring all shelves app needs to support pure ipv6 network，so，At least our server to be up and running in under an environment ipv6。
Since most domestic server can not provide ipv6 network，So we can only find their own tunnel，Now use[……]
Finally I changed a relatively stable working environment，From now on，This is my desktop：
All right，In short，With mobile hard disk backup on a regular basis is not a permanent solution，so，As a poor force，We give yourself to find a suitable、A convenient backup solution。
As the saying goes：
Then，We are concerned that my design。
design
First of all，As a poor force，Backup Solution Design[……]
If that FIG.，I pocketed the input method of the user group broke a Robot，As the user off the grid input method more and more，Some admiring novice more。Many common problems repeated questions，Made people battered，If you can have a robot，Like Siri as，It automatically captures those keywords and then respond to these users，Not Miya? So that users can get answers carefully edited，And I can spare more time to write on behalf of yo wan[……]
Background account
According to regulations of the country，All network disk must be reviewed! (Probably because too much goddess，You know = _ =)，Then have stopped most of the network disk service，Now only some of the big manufacturers still operating in the cloud。but，You keep to a certain degree in the cloud all the information must be subject to review (the goddess of the film becomes 15 seconds educational films，It is light；If you say dang good，Or to save the file to a similar degree in the cloud，Tomorrow will be[……]
Pocketed a while ago on migrating from virtual host to an independent VPS，Maintenance of this all is my own。For performance，If your environment，Nature does not use the old configuration。
I use Ubuntu Server 16.04 + PHP 7.0 + Nginx + MySQL 5.7 In short，Stepped on a lot of holes。
From now on，To record[……]