How to set up fail2ban?

Question

Nginx

fail2ban 0.8.4 Help me figure out what the cant. I set up a ban on nginx connection/requests limits
/var/log/nginx/error.log:

2014/02/06 10:57:41 [error] 30758#0: *41499 limiting connections by zone "bad_ip", client: 178.68.6.216, server: domain.ru, request: "GET /

[skipped]
...
and more than 10 times

2014/02/06 10:56:52 [error] 30758#0: *41327 limiting requests, excess: 20.232 by zone "bad_req", client: 178.68.6.216, server: domain.ru, request: "GET /

[skipped]
...
and more than 20 time
REGEX for limiting connection and requests:

failregex = limiting connections by zone.*client: <HOST>

and
failregex = limiting requests.*client: <HOST>
jail.local:

[nginx-conn-limit]

enabled = true
filter = nginx-conn-limit
action = iptables-multiport[name=ConnLimit, port="http,https", protocol=tcp]
logpath = /var/log/nginx/error.log
findtime = 600
bantime = 7200
maxretry = 10

[nginx-req-limit]

enabled = true
filter = nginx-req-limit
action = iptables-multiport[name=ReqLimit, port="http,https", protocol=tcp]
logpath = /var/log/nginx/error.log
findtime = 600
bantime = 7200
maxretry = 20

/var/log/fail2ban.log:

...
2014-02-06 10:46:05,332 fail2ban.jail : INFO Creating new jail 'nginx-req-limit'
2014-02-06 10:46:05,333 fail2ban.jail : INFO Jail 'nginx-req-limit' uses poller
2014-02-06 10:46:05,345 fail2ban.filter : INFO Added logfile = /var/log/nginx/error.log
2014-02-06 10:46:05,363 fail2ban.filter : INFO Set maxRetry = 20
2014-02-06 10:46:05,386 fail2ban.filter : INFO Set findtime = 600
2014-02-06 10:46:05,387 fail2ban.actions: INFO Set banTime = 7200
...
2014-02-06 10:46:05,893 fail2ban.jail : INFO Creating new jail 'nginx-conn-limit'
2014-02-06 10:46:05,893 fail2ban.jail : INFO Jail 'nginx-conn-limit' uses poller
2014-02-06 10:46:05,897 fail2ban.filter : INFO Added logfile = /var/log/nginx/error.log
2014-02-06 10:46:05,920 fail2ban.filter : INFO Set maxRetry = 10
2014-02-06 10:46:05,956 fail2ban.filter : INFO Set findtime = 600
2014-02-06 10:46:05,957 fail2ban.actions: INFO Set banTime = 7200
...
2014-02-06 10:46:06,304 fail2ban.jail : INFO Jail 'nginx-req-limit' started
2014-02-06 10:46:06,380 fail2ban.jail : INFO Jail 'nginx-conn-limit' started
...

Actually, that's all. I dial the indicated limits and nothing. fail2ban does not respond, the log is silent.

Answer 1

Updated to the latest version - everything worked. Apparently a bug or lack of compatibility with python 2.6 or something...

Answer 2

Check filters with fail2ban-regex

Answer 3

fail2ban-regex '/var/log/nginx/error.log' 'limiting requests.*client: <HOST>'

Date template hits:
0 hit(s): MONTH Day Hour:Minute:Second
0 hit(s): WEEKDAY MONTH Day Hour:Minute:Second Year
0 hit(s): WEEKDAY MONTH Day Hour:Minute:Second
24795 hit(s): Year/Month/Day Hour:Minute:Second
0 hit(s): Day/Month/Year Hour:Minute:Second
0 hit(s): Day/Month/Year Hour:Minute:Second
0 hit(s): Day/MONTH/Year:Hour:Minute:Second
0 hit(s): Month/Day/Year:Hour:Minute:Second
0 hit(s): Year-Month-Day Hour:Minute:Second
0 hit(s): Day-MONTH-Year Hour:Minute:Second[.Millisecond]
0 hit(s): Day-Month-Year Hour:Minute:Second
0 hit(s): TAI64N
0 hit(s): Epoch
0 hit(s): ISO 8601
0 hit(s): Hour:Minute:Second
0 hit(s): <Month/Day/[email protected]:Minute:Second>

Success, the total number of match is 9388

Date template hits:
0 hit(s): MONTH Day Hour:Minute:Second
0 hit(s): WEEKDAY MONTH Day Hour:Minute:Second Year
0 hit(s): WEEKDAY MONTH Day Hour:Minute:Second
19582 hit(s): Year/Month/Day Hour:Minute:Second
0 hit(s): Day/Month/Year Hour:Minute:Second
0 hit(s): Day/Month/Year Hour:Minute:Second
0 hit(s): Day/MONTH/Year:Hour:Minute:Second
0 hit(s): Month/Day/Year:Hour:Minute:Second
0 hit(s): Year-Month-Day Hour:Minute:Second
0 hit(s): Day-MONTH-Year Hour:Minute:Second[.Millisecond]
0 hit(s): Day-Month-Year Hour:Minute:Second
0 hit(s): TAI64N
0 hit(s): Epoch
0 hit(s): ISO 8601
0 hit(s): Hour:Minute:Second
0 hit(s): <Month/Day/[email protected]:Minute:Second>

Success, the total number of match is 4175