Error ntopng requires redis server to be up and running

No, it does NOT work; I hope you’ll take 1 mn to read the following proof:

root@msi-ge60-ubuntu:/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng# ls -al libssl*
lrwxrwxrwx 1 actionmystique actionmystique 35 Oct 12 09:20 libssl.so -> /usr/lib/x86_64-linux-gnu/libssl.so
root@msi-ge60-ubuntu:/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng# ./ntopng —version
v.2.1.151015 [Community Edition]
GIT rev: dev:a35ec1ea8c86d32b5b0c64351bbabfac0b88b798:20151015
root@msi-ge60-ubuntu:/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng# make cert
openssl req -new -x509 -sha1 -extensions v3_ca -nodes -days 365 -out cert.pem
Generating a 2048 bit RSA private key
………………+++
…………………+++

writing new private key to ‘privkey.pem’

You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,

If you enter ‘.’, the field will be left blank.

Country Name (2 letter code) [AU]:FR
State or Province Name (full name) [Some-State]:Yvelines
Locality Name (eg, city) []:Fontenay-Le-Fleury
Organization Name (eg, company) [Internet Widgits Pty Ltd]:SIT
Organizational Unit Name (eg, section) []:Consultants
Common Name (e.g. server FQDN or YOUR name) []:ntopng.msi-ge60-ubuntu.actionmystique.net
Email Address []:manciot.jeanchristophe@gmail.com
cat privkey.pem cert.pem > httpdocs/ssl/ntopng-cert.pem
/bin/rm -f privkey.pem cert.pem
root@msi-ge60-ubuntu:/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng# ntopng -i 1 —user root
15/Oct/2015 20:04:31 [Ntop.cpp:929] Setting local networks to 127.0.0.0/8
15/Oct/2015 20:04:31 [Redis.cpp:105] Successfully connected to redis 127.0.0.1:6379@0
15/Oct/2015 20:04:32 [PcapInterface.cpp:81] Reading packets from interface wlan0…
15/Oct/2015 20:04:32 [Ntop.cpp:1178] Registered interface view wlan0 [id: 4]
15/Oct/2015 20:04:32 [Ntop.cpp:1148] Registered interface wlan0 [id: 0]
15/Oct/2015 20:04:32 [Utils.cpp:304] User changed to root
15/Oct/2015 20:04:32 [main.cpp:237] PID stored in file /var/tmp/ntopng.pid

15/Oct/2015 20:04:32 [HTTPserver.cpp:458] Please read https://github.com/ntop/ntopng/blob/dev/doc/README.SSL if you want to enable SSL.

15/Oct/2015 20:04:32 [HTTPserver.cpp:501] Web server dirs [/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng/httpdocs][/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng/scripts]
15/Oct/2015 20:04:32 [HTTPserver.cpp:504] HTTP server listening on port 3000
15/Oct/2015 20:04:32 [main.cpp:290] Working directory: /var/tmp/ntopng
15/Oct/2015 20:04:32 [main.cpp:292] Scripts/HTML pages directory: /home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng
15/Oct/2015 20:04:32 [Ntop.cpp:260] Welcome to ntopng x86_64 v.2.1.151015 — (C) 1998-15 ntop.org
15/Oct/2015 20:04:32 [Ntop.cpp:265] Built on Ubuntu 15.04
15/Oct/2015 20:04:32 [PeriodicActivities.cpp:53] Started periodic activities loop…
15/Oct/2015 20:04:32 [RuntimePrefs.cpp:32] Dumping alerts into syslog
15/Oct/2015 20:04:32 [Ntop.cpp:512] Adding 192.168.1.0/24 as IPv4 local network
15/Oct/2015 20:04:32 [Ntop.cpp:542] Adding fe80::260a:64ff:fedd:b13c/64 as IPv6 local network
15/Oct/2015 20:04:32 [NetworkInterface.cpp:1450] Started packet polling on interface wlan0 [id: 0]…
^C15/Oct/2015 20:04:45 [main.cpp:37] Shutting down…
15/Oct/2015 20:04:45 [PcapInterface.cpp:183] Terminated packet polling for wlan0
^C15/Oct/2015 20:04:46 [main.cpp:34] Ok I am leaving now

Running on Windows¶

on Windows ntopng runs as service. The ntopng installer registers the service and automatically starts is as shown below.

The Windows Services Manager

You can start ntopng from cmd.exe only for debug purposes or for manipulating the service settings. In this case you can start cmd.exe (i.e. Windows Commands Prompt) and navigate to the ntopng installation directory (i.e. C:Program Filesntopng). Commands are issued after a /c that stands for console. For example to display the inline help it suffices to run

ntopng requires the Redis service to be up and running or it will not start. Make sure this service is running and auto-started on boot. Check its status from the Services application.

List Monitored Interfaces¶

As network interfaces on Windows can have long names, a numeric index is associated to the interface in order to ease the ntopng configuration. The association between interface name and index is shown in the inline help.

In the above example the network adapter Intel(R) PRO/1000 MT Desktop is associated with index 1. To select this adapter ntopng needs to be started with -i 1 option.

Manipulating ntopng Windows Service Settings¶

Windows services are started and stopped using the Services application part of the Windows administrative tools. When ntopng is used as service, command line options need to be specified at service registration and can be modified only by removing and re-adding the service. The ntopng installer registers ntopng as a service with the default options. The default registered service options can be changed using these commands:

Note that when you install the ntopng service (/i) you can specify a configuration file (the format is the same one used on Linux) instead of specifying the individual options. Example

Please make sure to

• Specify an absolute configuration file path (i.e. c:….) and not a local one.
• Store the file in a directory that is readeable by the Windows service manager.

Troubleshooting¶

ntopng requires the Redis service to be activated in order to start. You can check Redis status from the Services application.

In some Windows PCs, in particular those with WiFi adapters, ntopng might not be able to detect these adapters. Shall this be the case, we suggest you to uninstall the Win10Pcap drivers that are installed with ntopng and move to the ncap Windows drivers that can be installed from ncap Windows drivers.

Источник

Redis Connection error [Connection refused] #2429

This issue has come up with newer version(s) of the ntopng deb. Specifically I was just now testing with this deb:

and using this /etc/ntopng/ntopng.conf

If I try to start it with «systemctl start ntopng», it fails with this complaint even through stock Ubuntu redis-server is indeed running:

I even fired up a dedicated new redis service on port 6380, confirmed it was working with «redis-cli -p 6380» and added this to ntopng.conf, but systemctl still fails in exactly the same way

But if I start it ntopng the manual way, it starts up, daemonizes, and works just fine in my web browser:

In either case, my redis-server is installed and running just fine

Somehow it appears that the running redis-server process is invisible to systemd where ntopng is involved, thus preventing my from using systemctl to start it.

Do you have any idea what might be going on?

The text was updated successfully, but these errors were encountered:

Are you running ubuntu 16? It works fine in my test system with a modified version of the configuration above

Yes, Ubuntu 16.04 Server. I am not sure how to further diagnose this as it only comes up when systemctl tries to start ntopng. I actually find that on another Ubuntu 16.04 server in a very similar role, that the version of ntopng installed via the same exact deb does not exhibit this problem. Any ideas on how I could test this further?

You can try to inspect the loopback interface communication on port 6379 and see how ntopng and redis communicate and what goes wrong. ntopng sends a «PING» message to redis to verify the communication. The other option is to reinstall ntopng or install the dev version as this issue is really weird

Hi, I inspected the loopback interface and zero packets on 6379 are seen when I run «systemctl start ntopng» while when I just run «ntopng /etc/ntopng/ntopng.conf» I do see the expected redis packets.

I then tried using strace when starting up ntopng with systemctl but nothing particularly interesting stood out to me when inspecting all the noisy output of that.

Lastly I switched to installing the daily build deb rather than the stable deb for ntopng and it still fails with systemctl while working with a manual call, but the error output is a bit different:

and this is seen in syslog output

One other thing I tried was to blow away ntopng.conf entirely and run ntopng that way so it just takes default settings only, which when I start manually does result in the daemon coming up. When I tweaked /etc/systemd/system/ntopng.service to remove the reference to ntopng.conf, the same failure occurs with a systemctl start attempt, so it appears clear there is nothing in my unique ntopng.conf breaking things.

This really is perplexing and I welcome any other diagnostic suggestions you might have.

Connection error [Connection refused] that seems more a firewall issue.

Please, check and make sure there’s nothing blocking such connections. maybe iptables?

It is only reaching out to localhost to reach the running redis service.
When I run /usr/local/bin/ntopng /etc/ntopng/ntopng.conf it works
but when I run systemctl start ntopng it fails
so I can’t see how iptables could be interfering

I’ve just tried to reproduce using your exact config and

. it works perfectly on ubuntu16.

Note that it doesn’t matter if it’s on localhost . if there’s something (e.g., a firewall) preventing ntopng from connecting on localhost. the connection will fail.

• try and remove option —daemon
• are you sure the /etc/systemd/system/ntopng.service hasn’t been changed/tampered?

Regular output is

That is, there is a series of ExecStartPre, ExecStopPost that don’t show up in your output..

Try with an apt-get install —reinstall ntopng

I purged and reinstalled ntopng, making sure the ntopng.service file was untouched and now it shows the missing lines you mentioned. Yes I had commented those lines out experimentally earlier.

This time I also completely disabled ufw and flushed iptables.

Then while running «systemctl start ntopng» in one terminal I ran «tcpdump -i lo port 6389 -nn» in another terminal and caught zero packets.

It still fails with the same mysterious complaint. Is there perhaps some specific way I might use strace to see more details about the attempt to connect to redis? I am not very good with that tool but open to suggestions.

Thanks for sticking with me on this,
Kevin

Источник

ERROR: ntopng requires redis server to be up and running although it is up and running #224

redis-server
[26973] 12 Oct 12:04:57.356 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
[26973] 12 Oct 12:04:57.357 * Increased maximum number of open files to 10032 (it was originally set to 1024).
.
.- __ »-._ _.- . . »-._ Redis 2.8.19 (00000000/0) 64 bit
.- .-«.«/ _.,_ »-._ ( ‘ , .- | , ) Running in stand alone mode | -. -. — __. -. -._|’ .-‘| Port: 6379
| -._ ._ / .-‘ | PID: 26973
-._ -. -./ _.-‘ _.-‘ | -. -._ -.**.-‘ .-‘.-‘|
| -._ -. .-‘.-‘ | http://redis.io
-._ -. -.**.-‘_.-‘ _.-‘ | -. -._ -.**.-‘ .-‘.-‘|
| -._ -._ .-‘.-‘ |
-._ -. -.**.-‘_.-‘ _.-‘ -. -.__.-‘ _.-‘ -._ _.-‘
`-.__.-‘

[26973] 12 Oct 12:04:57.358 # Server started, Redis version 2.8.19
[26973] 12 Oct 12:04:57.358 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add ‘vm.overcommit_memory = 1’ to /etc/sysctl.conf and then reboot or run the command ‘sysctl vm.overcommit_memory=1’ for this to take effect.
[26973] 12 Oct 12:04:57.358 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command ‘echo never > /sys/kernel/mm/transparent_hugepage/enabled’ as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
[26973] 12 Oct 12:04:57.358 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
[26973] 12 Oct 12:04:57.358 * The server is now ready to accept connections on port 6379

/Ntop/ntopng$ ntopng -i 1 -user actionmystique
12/Oct/2015 12:07:34 [Prefs.cpp:580] ntopng will use redis actionmystique:6379@0
12/Oct/2015 12:07:34 [Prefs.cpp:797] Logging into /var/tmp/ntopng/ntopng.log
12/Oct/2015 12:07:34 [Ntop.cpp:929] Setting local networks to 127.0.0.0/8
12/Oct/2015 12:07:34 [Redis.cpp:92] ERROR: ntopng requires redis server to be up and running
12/Oct/2015 12:07:34 [Redis.cpp:93] ERROR: Please start it and try again or use -r
12/Oct/2015 12:07:34 [Redis.cpp:94] ERROR: to specify a redis server other than the default

The text was updated successfully, but these errors were encountered:

I do not know if it is a copy-paste error, but if you want to specify a different system user you have to specify it using ‘—‘ (double dash) and not just ‘-‘.
Probably the system detects the ‘r’ of ‘-user’ as the option -r to specify the redis location (checkout the following log line)
12/Oct/2015 12:07:34 [Prefs.cpp:580] ntopng will use redis actionmystique:6379@0
According to the help, I suggest you to use either —user action mystique or -U mystique in your cli

You’re right: —user instead of -user.
One complimentary question: do you know how to compile ntopng with openssl support; the» configure —help» does not talk about it.

I already followed those guidelines.

What platform and package are you using exactly?

ntopng x86_64 v.2.1.151014
Ubuntu 15.04

Ah I cannot help I told you. The packages are for Ubuntu 14.04 LTS. I use myself for developing Ubuntu 15.04 and if you compile from source everything will work.

No, it does NOT work; I hope you’ll take 1 mn to read the following proof:

root@msi-ge60-ubuntu:/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng# ls -al libssl*
lrwxrwxrwx 1 actionmystique actionmystique 35 Oct 12 09:20 libssl.so -> /usr/lib/x86_64-linux-gnu/libssl.so
root@msi-ge60-ubuntu:/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng# ./ntopng —version
v.2.1.151015 [Community Edition]
GIT rev: dev:a35ec1ea8c86d32b5b0c64351bbabfac0b88b798:20151015
root@msi-ge60-ubuntu:/home/actionmystique/Program-Files/Ubuntu/Ntop/ntopng# make cert
openssl req -new -x509 -sha1 -extensions v3_ca -nodes -days 365 -out cert.pem
Generating a 2048 bit RSA private key
. +++
. +++

writing new private key to ‘privkey.pem’

You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,

Источник

Error ntopng requires redis server to be up and running

Всем привет , работаю с 2.3.2-RELEASE (amd64) built on Tue Jul 19 12:44:43 CDT 2016 FreeBSD 10.3-RELEASE-p5 , установил пакет ntopng , все работало замечательно , моргнул свет , включаю смотрю в сервисе ntopng лежит , зашел в командную строку пытаюсь стартануть : ntopng.

ntopng : 27/Mar/2017 17:34:15 [Prefs.cpp:919] Logging into /var/tmp/ntopng/ntopng.log
27/Mar/2017 17:34:15 [Ntop.cpp:1121] Setting local networks to 127.0.0.0/8
27/Mar/2017 17:34:17 [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
27/Mar/2017 17:34:17 [Redis.cpp:80] ERROR: Please start it and try again or use -r
27/Mar/2017 17:34:17 [Redis.cpp:81] ERROR: to specify a redis server other than the default

Идем дальше смотрю логи redis’a :

Redis logs : /var/log/redis/redis.log
13771:M 27 Mar 16:06:34.087 * 10 changes in 300 seconds. Saving…
13771:M 27 Mar 16:06:34.087 * Background saving started by pid 73803
73803:C 27 Mar 16:06:34.092 * DB saved on disk
13771:M 27 Mar 16:06:34.194 * Background saving terminated with success
13771:M 27 Mar 16:11:35.077 * 10 changes in 300 seconds. Saving.
13771:M 27 Mar 16:11:35.078 * Background saving started by pid 89520
89520:C 27 Mar 16:11:35.083 * DB saved on disk
13771:M 27 Mar 16:11:35.181 * Background saving terminated with success
13771:M 27 Mar 16:16:36.083 * 10 changes in 300 seconds. Saving.
13771:M 27 Mar 16:16:36.083 * Background saving started by pid 11670
11670:C 27 Mar 16:16:36.088 * DB saved on disk
13771:M 27 Mar 16:16:36.190 * Background saving terminated with success
13771:M 27 Mar 16:21:37.029 * 10 changes in 300 seconds. Saving.
13771:M 27 Mar 16:21:37.030 * Background saving started by pid 32620
32620:C 27 Mar 16:21:37.035 * DB saved on disk
13771:M 27 Mar 16:21:37.137 * Background saving terminated with success
13771:M 27 Mar 16:26:38.083 * 10 changes in 300 seconds. Saving.
13771:M 27 Mar 16:26:38.084 * Background saving started by pid 81885
81885:C 27 Mar 16:26:38.089 * DB saved on disk
13771:M 27 Mar 16:26:38.191 * Background saving terminated with success
13771:M 27 Mar 16:31:39.071 * 10 changes in 300 seconds. Saving.
13771:M 27 Mar 16:31:39.072 * Background saving started by pid 24264
24264:C 27 Mar 16:31:39.077 * DB saved on disk
13771:M 27 Mar 16:31:39.173 * Background saving terminated with success
13771:signal-handler (1490632348) Received SIGTERM scheduling shutdown.
13771:M 27 Mar 16:32:28.955 # User requested shutdown.
13771:M 27 Mar 16:32:28.955 * Saving the final RDB snapshot before exiting.
13771:M 27 Mar 16:32:28.968 * DB saved on disk
13771:M 27 Mar 16:32:28.968 * Removing the pid file.
13771:M 27 Mar 16:32:28.968 # Redis is now ready to exit, bye bye.

Решил проблему так : service-redis /usr/local/etc/redis.conf
Я думал что я решил проблему :DD перезагружаю ПК и вижу что все повторяется по кругу

Сислоги :
syslog : Mar 27 11:02:48 pfSense php-fpm[280]: /rc.start_packages: [ntopng] Cannot set admin password — redis-server is not running.
Mar 27 11:02:50 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:02:50 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:03:10 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:03:10 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:06:42 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:06:42 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:12:30 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:12:30 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:14:24 pfSense admin: /usr/local/etc/rc.d/redis: WARNING: failed to start redis
Mar 27 11:18:52 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:18:52 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:20:33 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:20:33 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:20:48 pfSense admin: /usr/local/etc/rc.d/redis: WARNING: failed to start redis

Если кто нибудь сталкивался с проблемой , помогите пожалуйста .

Источник

Всем привет , работаю с 2.3.2-RELEASE (amd64)  built on Tue Jul 19 12:44:43 CDT 2016  FreeBSD 10.3-RELEASE-p5  , установил пакет ntopng , все работало замечательно , моргнул свет , включаю смотрю в сервисе ntopng лежит , зашел в командную строку пытаюсь стартануть : ntopng.

ntopng : 27/Mar/2017 17:34:15 [Prefs.cpp:919] Logging into /var/tmp/ntopng/ntopng.log
27/Mar/2017 17:34:15 [Ntop.cpp:1121] Setting local networks to 127.0.0.0/8
27/Mar/2017 17:34:17 [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
27/Mar/2017 17:34:17 [Redis.cpp:80] ERROR: Please start it and try again or use -r
27/Mar/2017 17:34:17 [Redis.cpp:81] ERROR: to specify a redis server other than the default

Идем дальше смотрю логи redis’a :

Redis logs : /var/log/redis/redis.log
13771:M 27 Mar 16:06:34.087 * 10 changes in 300 seconds. Saving…
13771:M 27 Mar 16:06:34.087 * Background saving started by pid 73803
73803:C 27 Mar 16:06:34.092 * DB saved on disk
13771:M 27 Mar 16:06:34.194 * Background saving terminated with success
13771:M 27 Mar 16:11:35.077 * 10 changes in 300 seconds. Saving…
13771:M 27 Mar 16:11:35.078 * Background saving started by pid 89520
89520:C 27 Mar 16:11:35.083 * DB saved on disk
13771:M 27 Mar 16:11:35.181 * Background saving terminated with success
13771:M 27 Mar 16:16:36.083 * 10 changes in 300 seconds. Saving…
13771:M 27 Mar 16:16:36.083 * Background saving started by pid 11670
11670:C 27 Mar 16:16:36.088 * DB saved on disk
13771:M 27 Mar 16:16:36.190 * Background saving terminated with success
13771:M 27 Mar 16:21:37.029 * 10 changes in 300 seconds. Saving…
13771:M 27 Mar 16:21:37.030 * Background saving started by pid 32620
32620:C 27 Mar 16:21:37.035 * DB saved on disk
13771:M 27 Mar 16:21:37.137 * Background saving terminated with success
13771:M 27 Mar 16:26:38.083 * 10 changes in 300 seconds. Saving…
13771:M 27 Mar 16:26:38.084 * Background saving started by pid 81885
81885:C 27 Mar 16:26:38.089 * DB saved on disk
13771:M 27 Mar 16:26:38.191 * Background saving terminated with success
13771:M 27 Mar 16:31:39.071 * 10 changes in 300 seconds. Saving…
13771:M 27 Mar 16:31:39.072 * Background saving started by pid 24264
24264:C 27 Mar 16:31:39.077 * DB saved on disk
13771:M 27 Mar 16:31:39.173 * Background saving terminated with success
13771:signal-handler (1490632348) Received SIGTERM scheduling shutdown…
13771:M 27 Mar 16:32:28.955 # User requested shutdown…
13771:M 27 Mar 16:32:28.955 * Saving the final RDB snapshot before exiting.
13771:M 27 Mar 16:32:28.968 * DB saved on disk
13771:M 27 Mar 16:32:28.968 * Removing the pid file.
13771:M 27 Mar 16:32:28.968 # Redis is now ready to exit, bye bye…

Решил проблему так : service-redis /usr/local/etc/redis.conf
Я думал что я решил проблему :DD перезагружаю ПК и вижу что все повторяется по кругу

Сислоги :
syslog : Mar 27 11:02:48 pfSense php-fpm[280]: /rc.start_packages: [ntopng] Cannot set admin password — redis-server is not running.
Mar 27 11:02:50 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:02:50 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:03:10 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:03:10 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:06:42 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:06:42 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:12:30 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:12:30 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:14:24 pfSense admin: /usr/local/etc/rc.d/redis: WARNING: failed to start redis
Mar 27 11:18:52 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:18:52 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:20:33 pfSense ntopng: [Redis.cpp:79] ERROR: ntopng requires redis server to be up and running
Mar 27 11:20:33 pfSense ntopng: [Redis.cpp:81] ERROR: to specify a redis server other than the default
Mar 27 11:20:48 pfSense admin: /usr/local/etc/rc.d/redis: WARNING: failed to start redis

Если кто нибудь сталкивался с проблемой , помогите  пожалуйста .

Updated 9/11/2015: New instructions on how to start and configure ntopng, after Ntop has changed the behaviour. New CentOS repository added. Hiredis is now needed. Thanks so much to Shashi and Steven for your comments.

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Ntop NG is an extraordinary tool that helps you to know more about your network traffic. It has a lot of great features and I use it mainly to know quickly what kind of traffic is being generated in my network lab thanks to its web interface with summaries and rrd charts. It supports sFlow so it will be great to use it with openvswitch and get some statistics.

Ntop offers RPM packages for both CentOS/RHEL 6 and CentOS/RHEL 7 so it’s very easy to install.

First of all we’re going to add the EPEL repository:

yum install epel-release wget

We’ll need to install the latest RPM packages: ntopng-data and ntopng.

Let’s create the ntop repository for the nightly builds:

cat <<EOT > /etc/yum.repos.d/ntop.repo
[ntop]
name=ntop packages
baseurl=http://packages.ntop.org/centos/$releasever/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://packages.ntop.org/centos/RPM-GPG-KEY-deri
[ntop-noarch]
name=ntop packages
baseurl=http://packages.ntop.org/centos/$releasever/noarch/
enabled=1
gpgcheck=1
gpgkey=http://packages.ntop.org/centos/RPM-GPG-KEY-deri
EOT

Let’s install the packages. We’ll have to accept Luca Deri’s GPG key:

yum install ntopng ntopng-data

Updated (thanks to Davide Lorenzetti for his comment): Let’s install the hiredis-devel package and start the redis server before starting ntopng. You can also enable the service to start at boot time using: systemctl enable redis.service

yum install hiredis-devel
systemctl start redis.service

Let’s start ntopng using systemctl.

systemctl start ntopng.service

Ntop will create a default configuration file at /etc/ntopng/ntopng.conf, however if you check the status, you’ll see that NTOP warns you about no Pro licence is found and so it will run in community mode after 10 minutes.

systemctl status ntopng
oct 16 19:29:38 tornasol.artemit.lab ntopng[3001]: [pro/NtopPro.cpp:145] WARNING: [LICENSE] ntopng will now run in pro mode for 10 minutes oct 16 19:29:38 tornasol.artemit.lab ntopng[3001]: [pro/NtopPro.cpp:147] WARNING: [LICENSE] before returning to community mode oct 16 19:29:38 tornasol.artemit.lab ntopng[3001]: [pro/NtopPro.cpp:148] WARNING: [LICENSE] You can buy a permanent license at http://shop.ntop.org oct 16 19:29:38 tornasol.artemit.lab ntopng[3001]: [pro/NtopPro.cpp:149] WARNING: [LICENSE] or run ntopng in community mode starting oct 16 19:29:38 tornasol.artemit.lab ntopng[3001]: [pro/NtopPro.cpp:150] WARNING: [LICENSE] ntopng --community oct 16 19:29:39 tornasol.artemit.lab ntopng[3001]: [src/HTTPserver.cpp:486] ERROR: Unable to start HTTP server (IPv4) on ports 3000,3001s Success

As we have no Pro licence (unless you get one of course) we can edit /etc/ntopng/ntopng.conf file to remove the warnings (I’ve added a after the pid file):

-G=/var/tmp/ntopng.pid
--community

We’ll restart ntopng and check the status again:

systemctl restart ntopng
systemctl status ntopng
ntopng.service - Start/stop ntopng program Loaded: loaded (/etc/systemd/system/ntopng.service; enabled) Active: active (running) since vie 2015-10-16 21:19:52 CEST; 21s ago Process: 1711 ExecStop=/etc/systemd/scripts/ntopng stop (code=exited, status=0/SUCCESS) Process: 1756 ExecStart=/etc/systemd/scripts/ntopng start (code=exited, status=0/SUCCESS) Main PID: 1762 (ntopng) CGroup: /system.slice/ntopng.service └─1762 /usr/bin/ntopng /etc/ntopng/ntopng.conf oct 16 21:19:52 tornasol.artemit.lab ntopng[1756]: Starting ntopng: [ OK ] oct 16 21:19:52 tornasol.artemit.lab systemd[1]: Started Start/stop ntopng program.

Sweet. You can also enable the service to start at boot time using:

systemctl enable redis.service
systemctl enable ntopng.service

Ntopng listens by default at the 3000 TCP port so you’ll need a firewall rule if trying
to get access from a remote machine. If using the dynamic firewall daemon you can use
firewall-cmd to configure the firewall to allow traffic to 3000 port coming from a specific IP address (-s X.X.X.X, e.g my IP is 192.168.5.100). Note that this rule is not permanent.

firewall-cmd --direct --add-rule ipv4 filter IN_public_allow 0 -m tcp -p tcp --dport 3000 -s 192.168.5.100 -j ACCEPT

Using a web browser, introduce the IP address of the host running ntop specifying port 3000(e.g http://192.168.1.185:3000). If a login/password shows, enter user admin and password admin and enjoy your ntopng network monitor!

If you want to set any configuration options to /etc/ntopng/ntopng.conf file, I found it a little tricky so read the man page (man ntopng). I’ll update this post offering some examples.

A big thank you to Luca Deri and Ntop’s team!

Cheers!

P.S: If you want to use SSL with the web interface please read my post