unable to connect

Hi everyone,

I configured my server yesterday, and today I got “Unable to connect” message. I followed the one click WordPress install tutorial.

I got this message:

Firefox can’t establish a connection to the server at 128.199.207.182.

    The site could be temporarily unavailable or too busy. Try again in a few moments.
    If you are unable to load any pages, check your computer’s network connection.
    If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

So I performed:

1). Apache’s error.log, and got this message:

root@wordpress-1gb-sgp1-01:~# tail -50 /var/log/apache2/error.log
[Sat Dec 09 14:34:33.070859 2017] [mpm_prefork:notice] [pid 1738] AH00163: Apache/2.4.18 (Ubuntu) configured -- resuming normal operations
[Sat Dec 09 14:34:33.071034 2017] [core:notice] [pid 1738] AH00094: Command line: '/usr/sbin/apache2'

2). System Logs, and got this message:

root@wordpress-1gb-sgp1-01:~# tail -50 /var/log/systemlog
tail: cannot open '/var/log/systemlog' for reading: No such file or directory

3). PHP Logs, and got this message:

root@wordpress-1gb-sgp1-01:~# tail -50 /var/log/php*.log
tail: cannot open '/var/log/php*.log' for reading: No such file or directory

4. I run top as well and got this:

top - 18:27:53 up 1 day,  3:53,  1 user,  load average: 0.00, 0.00, 0.00
Tasks: 122 total,   1 running, 121 sleeping,   0 stopped,   0 zombie
%Cpu(s):  1.3 us,  0.0 sy,  0.0 ni, 98.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  1016120 total,    86592 free,   424684 used,   504844 buff/cache
KiB Swap:        0 total,        0 free,        0 used.   337480 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND     
 1751 root      20   0  519448  18512   5364 S  1.7  1.8   1:55.78 fail2ban-se+
  599 root      20   0   28356   2656   2320 S  0.3  0.3   0:08.07 systemd-jou+
 1596 mysql     20   0 1118060 184976  10420 S  0.3 18.2   2:17.56 mysqld      
29070 root      20   0   95400   6924   5988 S  0.3  0.7   0:00.11 sshd        
29151 root      20   0   40496   3736   3164 R  0.3  0.4   0:00.10 top         
    1 root      20   0   37696   5112   3352 S  0.0  0.5   0:08.11 systemd     
    2 root      20   0       0      0      0 S  0.0  0.0   0:00.01 kthreadd    
    3 root      20   0       0      0      0 S  0.0  0.0   0:01.21 ksoftirqd/0 
    5 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 kworker/0:0H
    7 root      20   0       0      0      0 R  0.0  0.0   0:24.78 rcu_sched   
    8 root      20   0       0      0      0 S  0.0  0.0   0:00.00 rcu_bh      
    9 root      rt   0       0      0      0 S  0.0  0.0   0:00.00 migration/0 
   10 root      rt   0       0      0      0 S  0.0  0.0   0:01.09 watchdog/0  
   11 root      20   0       0      0      0 S  0.0  0.0   0:00.00 kdevtmpfs   
   12 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 netns       
   13 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 perf        
   14 root      20   0       0      0      0 S  0.0  0.0   0:00.46 khungtaskd  

What can I do now?