WIP: integration.netdata.linux.html.
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# Integrate netdata monitor (on Linux server)
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[TOC]
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## What's netdata
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netdata (<http://my-netdata.io>) is a "Simple. Effective. Awesome!" monitor
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which can monitor almost everyting on your Linux/FreeBSD system. You can visit
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its website to check online demo.
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We will show you how to install and configure netdata on iRedMail server
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(Linux) to monitor mail service related softwares.
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## Install packages required by netdata
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netdata requires some tools to get stastics data from other softwares, let's
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install it first.
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* On RHEL/CentOS:
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```
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yum install curl libmnl libuuid lm_sensors nc PyYAML zlib iproute MySQL-python python-psycopg2
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```
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* On Debian/Ubuntu:
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```
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apt-get install zlib1g libuuid1 libmnl0 curl lm-sensors iproute netcat python-mysqldb python-psycopg2
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```
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## Install netdata
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* Download the latest netdata from its github project page, and upload to
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iRedMail server: <https://github.com/firehol/netdata/releases>
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We use version `1.9.0` for example in this tutorial, the package we download
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is: <https://github.com/firehol/netdata/releases/download/v1.9.0/netdata-latest.gz.run>
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We assume you upload the package to `/root/netdata-latest.gz.run`.
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* Install netdata:
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```
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cd /root/
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chmod +x netdata-latest.gz.run
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./netdata-latest.gz.run --accept
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```
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netdata installs its files under `/opt/netdata/` by default, let's create
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symbol link of the configuration and log directories:
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```
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ln -s /opt/netdata/etc/netdata /etc/netdata
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ln -s /opt/netdata/var/log/netdata /var/log/netdata
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```
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netdata will create required systemd script for service control, also logrotate
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config file, so there's not much we need to do after the package installation.
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## Configure netdata
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Main config file of netdata is `/etc/netdata/netdata.conf`, it contains many
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parameters with detailed comments. Here's the
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[config file](https://bitbucket.org/zhb/iredmail/src/default/iRedMail/samples/netdata/netdata.conf)
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used by iRedMail:
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* It binds to address `127.0.0.1` and port `19999` by default. Since it doesn't
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have ACL control, we will run netdata behind Nginx to get ACL control done in
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Nginx.
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```
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[registry]
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enabled = no
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[global]
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bind to = 127.0.0.1
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run as user = netdata
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default port = 19999
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update every = 3
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[plugin:proc]
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# Disable IPVS check since iRedMail doesn't use ipvs by default
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/proc/net/ip_vs/stats = no
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# inbound packets dropped
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/proc/net/dev = no
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```
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netdata ships a lot modular config files to gather information of softwares
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running on the server, they have very good default settings and most config
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files don't need your attention at all. but some applications do require
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extra settings.
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### Monitor Nginx and php-fpm
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We need to enable `stub_status` in Nginx to get detailed server info, also
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update php-fpm config file to enable similar feature.
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* Create Nginx config snippet `/etc/nginx/templates/stub_status.tmpl` with
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content below:
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```
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location = /stub_status {
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stub_status on;
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access_log off;
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allow 127.0.0.1;
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deny all;
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}
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location = /status {
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include fastcgi_params;
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fastcgi_pass php_workers;
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fastcgi_param SCRIPT_FILENAME $fastcgi_script_name;
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access_log off;
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allow 127.0.0.1;
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deny all;
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}
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```
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* Update default virtual host config file `/etc/nginx/sites-enabled/00-default.conf`,
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include new snippet config file `stub_status.tmpl` after the
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`redirect_to_https.tmpl` line like below:
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```
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server {
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...
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include /etc/nginx/templates/redirect_to_https.tmpl;
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include /etc/nginx/templates/stub_status.tmpl; # <- add this line
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...
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}
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```
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* Update php-fpm pool config file `www.conf`, enable parameter `pm.status_path`
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like below:
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* On RHEL/CentOS, it's `/etc/php-fpm.d/www.conf`
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* On Debian, it's `/etc/php5/fpm/pool.d/www.conf`
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* On Ubuntu, it's `/etc/php/7.0/fpm/pool.d/www.conf` (note: php version number may be different on your server)
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* On FreeBSD, it's `/usr/local/etc/php-fpm.d/www.conf`
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* On OpenBSD, it's `/etc/php-fpm.conf`
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```
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pm.status_path = /status
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```
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* Restart both php-fpm and Nginx service.
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### [TODO] Monitor Dovecot
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### Monitor MySQL/MariaDB server
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netdata requires a SQL user (we use `netdata` here) with privilege `USAGE` to
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gather MySQL server information.
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* Create the SQL user with a strong password (please replace `<password>` in
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command below by the real (and strong) password).
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```
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# mysql -u root
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sql> GRANT USAGE ON *.* TO netdata@localhost IDENTIFIED BY '<password>';
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sql> FLUSH PRIVILEGES;
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```
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* Create file `/etc/netdata/python.d/mysql.conf` with content below.
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!!! attention
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* This file already exists, feel free to remove all content in this file
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and copy content below as its new content.
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* Please replace `<password>` below by the real password.
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```
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tcp:
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name: 'local'
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host: '127.0.0.1'
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port: '3306'
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user: 'netdata'
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pass: '<password>'
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```
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### Monitor PostgreSQL server
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netdata requires a SQL user (we use `netdata` here) to gather PostgreSQL server
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information.
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* Create the SQL user with a strong password (please replace `<password>` in
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command below by the real (and strong) password).
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```
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# su - postgres
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$ psql
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sql> CREATE USER netdata WITH ENCRYPTED PASSWORD '<password>' NOSUPERUSER NOCREATEDB NOCREATEROLE;
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```
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* Create file `/etc/netdata/python.d/mysql.conf` with content below.
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!!! attention
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* This file already exists, feel free to remove all content in this file
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and copy content below as its new content.
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* Please replace `<password>` below by the real password.
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```
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socket:
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name : 'local'
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user : 'netdata'
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password : '<password>'
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database : 'postgres'
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```
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## Configure Nginx to forward requests to netdata
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## System tuning
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To get better performance, netdata requires few sysctl settings. Please add
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lines below in `/etc/sysctl.conf`:
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```
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vm.dirty_expire_centisecs=60000
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vm.dirty_background_ratio=80
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vm.dirty_ratio=90
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```
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Also increase max open files limit.
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```
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mkdir -p /etc/systemd/system/netdata.service.d
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```
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Create file `/etc/systemd/system/netdata.service.d/limits.conf`:
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```
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[Service]
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LimitNOFILE=30000
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```
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Reload systemd daemon:
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```
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systemctl daemon-reload
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```
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@ -7,7 +7,10 @@
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* [For MySQL/MariaDB backend](./integration.mlmmj.mysql.html)
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* [For PostgreSQL backend](./integration.mlmmj.pgsql.html)
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* <a name="integration_netdata"></a>[Integrate netdata monitor](./integration.netdata.html) (netdata is an optional component since iRedMail-0.9.8)
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* <a name="integration_netdata"></a>Integrate netdata monitor (netdata is an optional component since iRedMail-0.9.8):
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* [For Linux](./integration.netdata.linux.html)
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* [For FreeBSD](./integration.netdata.freebsd.html)
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* netdata doesn't work on OpenBSD (yet).
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Documents contributed by iRedMail users:
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@ -167,7 +167,12 @@
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</ul>
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</li>
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<li>
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<p><a name="integration_netdata"></a><a href="./integration.netdata.html">Integrate netdata monitor</a> (netdata is an optional component since iRedMail-0.9.8)</p>
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<p><a name="integration_netdata"></a>Integrate netdata monitor (netdata is an optional component since iRedMail-0.9.8):</p>
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<ul>
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<li><a href="./integration.netdata.linux.html">For Linux</a></li>
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<li><a href="./integration.netdata.freebsd.html">For FreeBSD</a></li>
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<li>netdata doesn't work on OpenBSD (yet).</li>
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</ul>
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</li>
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</ul>
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<p>Documents contributed by iRedMail users:</p>
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@ -0,0 +1,268 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Integrate netdata monitor (on Linux server)</title>
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<link rel="stylesheet" type="text/css" href="./css/markdown.css" />
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</head>
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<body>
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<div id="navigation">
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<a href="https://www.iredmail.org" target="_blank">
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<img alt="iRedMail web site"
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src="./images/logo-iredmail.png"
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style="vertical-align: middle; height: 30px;"
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/>
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<span>iRedMail</span>
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</a>
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// <a href="./index.html">Document Index</a></div><h1 id="integrate-netdata-monitor-on-linux-server">Integrate netdata monitor (on Linux server)</h1>
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<div class="toc">
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<ul>
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<li><a href="#integrate-netdata-monitor-on-linux-server">Integrate netdata monitor (on Linux server)</a><ul>
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<li><a href="#whats-netdata">What's netdata</a></li>
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<li><a href="#install-packages-required-by-netdata">Install packages required by netdata</a></li>
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<li><a href="#install-netdata">Install netdata</a></li>
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<li><a href="#configure-netdata">Configure netdata</a><ul>
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<li><a href="#monitor-nginx-and-php-fpm">Monitor Nginx and php-fpm</a></li>
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<li><a href="#todo-monitor-dovecot">[TODO] Monitor Dovecot</a></li>
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<li><a href="#monitor-mysqlmariadb-server">Monitor MySQL/MariaDB server</a></li>
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<li><a href="#monitor-postgresql-server">Monitor PostgreSQL server</a></li>
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</ul>
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</li>
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<li><a href="#configure-nginx-to-forward-requests-to-netdata">Configure Nginx to forward requests to netdata</a></li>
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<li><a href="#system-tuning">System tuning</a></li>
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</ul>
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</li>
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</ul>
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</div>
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<h2 id="whats-netdata">What's netdata</h2>
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<p>netdata (<a href="http://my-netdata.io">http://my-netdata.io</a>) is a "Simple. Effective. Awesome!" monitor
|
||||
which can monitor almost everyting on your Linux/FreeBSD system. You can visit
|
||||
its website to check online demo.</p>
|
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<p>We will show you how to install and configure netdata on iRedMail server
|
||||
(Linux) to monitor mail service related softwares.</p>
|
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<h2 id="install-packages-required-by-netdata">Install packages required by netdata</h2>
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<p>netdata requires some tools to get stastics data from other softwares, let's
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install it first.</p>
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<ul>
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<li>On RHEL/CentOS:</li>
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</ul>
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<pre><code>yum install curl libmnl libuuid lm_sensors nc PyYAML zlib iproute MySQL-python python-psycopg2
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</code></pre>
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<ul>
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<li>On Debian/Ubuntu:</li>
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</ul>
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<pre><code>apt-get install zlib1g libuuid1 libmnl0 curl lm-sensors iproute netcat python-mysqldb python-psycopg2
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</code></pre>
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<h2 id="install-netdata">Install netdata</h2>
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<ul>
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<li>
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<p>Download the latest netdata from its github project page, and upload to
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iRedMail server: <a href="https://github.com/firehol/netdata/releases">https://github.com/firehol/netdata/releases</a></p>
|
||||
<p>We use version <code>1.9.0</code> for example in this tutorial, the package we download
|
||||
is: <a href="https://github.com/firehol/netdata/releases/download/v1.9.0/netdata-latest.gz.run">https://github.com/firehol/netdata/releases/download/v1.9.0/netdata-latest.gz.run</a></p>
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<p>We assume you upload the package to <code>/root/netdata-latest.gz.run</code>.</p>
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</li>
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<li>
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<p>Install netdata:</p>
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</li>
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</ul>
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<pre><code>cd /root/
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chmod +x netdata-latest.gz.run
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./netdata-latest.gz.run --accept
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</code></pre>
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<p>netdata installs its files under <code>/opt/netdata/</code> by default, let's create
|
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symbol link of the configuration and log directories:</p>
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<pre><code>ln -s /opt/netdata/etc/netdata /etc/netdata
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ln -s /opt/netdata/var/log/netdata /var/log/netdata
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</code></pre>
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<p>netdata will create required systemd script for service control, also logrotate
|
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config file, so there's not much we need to do after the package installation.</p>
|
||||
<h2 id="configure-netdata">Configure netdata</h2>
|
||||
<p>Main config file of netdata is <code>/etc/netdata/netdata.conf</code>, it contains many
|
||||
parameters with detailed comments. Here's the
|
||||
<a href="https://bitbucket.org/zhb/iredmail/src/default/iRedMail/samples/netdata/netdata.conf">config file</a>
|
||||
used by iRedMail:</p>
|
||||
<ul>
|
||||
<li>It binds to address <code>127.0.0.1</code> and port <code>19999</code> by default. Since it doesn't
|
||||
have ACL control, we will run netdata behind Nginx to get ACL control done in
|
||||
Nginx.</li>
|
||||
</ul>
|
||||
<pre><code>[registry]
|
||||
enabled = no
|
||||
|
||||
[global]
|
||||
bind to = 127.0.0.1
|
||||
run as user = netdata
|
||||
default port = 19999
|
||||
update every = 3
|
||||
|
||||
[plugin:proc]
|
||||
# Disable IPVS check since iRedMail doesn't use ipvs by default
|
||||
/proc/net/ip_vs/stats = no
|
||||
|
||||
# inbound packets dropped
|
||||
/proc/net/dev = no
|
||||
</code></pre>
|
||||
|
||||
<p>netdata ships a lot modular config files to gather information of softwares
|
||||
running on the server, they have very good default settings and most config
|
||||
files don't need your attention at all. but some applications do require
|
||||
extra settings.</p>
|
||||
<h3 id="monitor-nginx-and-php-fpm">Monitor Nginx and php-fpm</h3>
|
||||
<p>We need to enable <code>stub_status</code> in Nginx to get detailed server info, also
|
||||
update php-fpm config file to enable similar feature.</p>
|
||||
<ul>
|
||||
<li>Create Nginx config snippet <code>/etc/nginx/templates/stub_status.tmpl</code> with
|
||||
content below:</li>
|
||||
</ul>
|
||||
<pre><code>location = /stub_status {
|
||||
stub_status on;
|
||||
access_log off;
|
||||
allow 127.0.0.1;
|
||||
deny all;
|
||||
}
|
||||
|
||||
location = /status {
|
||||
include fastcgi_params;
|
||||
fastcgi_pass php_workers;
|
||||
fastcgi_param SCRIPT_FILENAME $fastcgi_script_name;
|
||||
access_log off;
|
||||
allow 127.0.0.1;
|
||||
deny all;
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
<ul>
|
||||
<li>Update default virtual host config file <code>/etc/nginx/sites-enabled/00-default.conf</code>,
|
||||
include new snippet config file <code>stub_status.tmpl</code> after the
|
||||
<code>redirect_to_https.tmpl</code> line like below:</li>
|
||||
</ul>
|
||||
<pre><code>server {
|
||||
...
|
||||
include /etc/nginx/templates/redirect_to_https.tmpl;
|
||||
include /etc/nginx/templates/stub_status.tmpl; # <- add this line
|
||||
...
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
<ul>
|
||||
<li>Update php-fpm pool config file <code>www.conf</code>, enable parameter <code>pm.status_path</code>
|
||||
like below:<ul>
|
||||
<li>On RHEL/CentOS, it's <code>/etc/php-fpm.d/www.conf</code></li>
|
||||
<li>On Debian, it's <code>/etc/php5/fpm/pool.d/www.conf</code></li>
|
||||
<li>On Ubuntu, it's <code>/etc/php/7.0/fpm/pool.d/www.conf</code> (note: php version number may be different on your server)</li>
|
||||
<li>On FreeBSD, it's <code>/usr/local/etc/php-fpm.d/www.conf</code></li>
|
||||
<li>On OpenBSD, it's <code>/etc/php-fpm.conf</code></li>
|
||||
</ul>
|
||||
</li>
|
||||
</ul>
|
||||
<pre><code>pm.status_path = /status
|
||||
</code></pre>
|
||||
|
||||
<ul>
|
||||
<li>Restart both php-fpm and Nginx service.</li>
|
||||
</ul>
|
||||
<h3 id="todo-monitor-dovecot">[TODO] Monitor Dovecot</h3>
|
||||
<h3 id="monitor-mysqlmariadb-server">Monitor MySQL/MariaDB server</h3>
|
||||
<p>netdata requires a SQL user (we use <code>netdata</code> here) with privilege <code>USAGE</code> to
|
||||
gather MySQL server information.</p>
|
||||
<ul>
|
||||
<li>Create the SQL user with a strong password (please replace <code><password></code> in
|
||||
command below by the real (and strong) password).</li>
|
||||
</ul>
|
||||
<pre><code># mysql -u root
|
||||
sql> GRANT USAGE ON *.* TO netdata@localhost IDENTIFIED BY '<password>';
|
||||
sql> FLUSH PRIVILEGES;
|
||||
</code></pre>
|
||||
|
||||
<ul>
|
||||
<li>
|
||||
<p>Create file <code>/etc/netdata/python.d/mysql.conf</code> with content below.</p>
|
||||
<div class="admonition attention">
|
||||
<p class="admonition-title">Attention</p>
|
||||
<ul>
|
||||
<li>This file already exists, feel free to remove all content in this file
|
||||
and copy content below as its new content.</li>
|
||||
<li>Please replace <code><password></code> below by the real password.</li>
|
||||
</ul>
|
||||
</div>
|
||||
</li>
|
||||
</ul>
|
||||
<pre><code>tcp:
|
||||
name: 'local'
|
||||
host: '127.0.0.1'
|
||||
port: '3306'
|
||||
user: 'netdata'
|
||||
pass: '<password>'
|
||||
</code></pre>
|
||||
|
||||
<h3 id="monitor-postgresql-server">Monitor PostgreSQL server</h3>
|
||||
<p>netdata requires a SQL user (we use <code>netdata</code> here) to gather PostgreSQL server
|
||||
information.</p>
|
||||
<ul>
|
||||
<li>Create the SQL user with a strong password (please replace <code><password></code> in
|
||||
command below by the real (and strong) password).</li>
|
||||
</ul>
|
||||
<pre><code># su - postgres
|
||||
$ psql
|
||||
sql> CREATE USER netdata WITH ENCRYPTED PASSWORD '<password>' NOSUPERUSER NOCREATEDB NOCREATEROLE;
|
||||
</code></pre>
|
||||
|
||||
<ul>
|
||||
<li>
|
||||
<p>Create file <code>/etc/netdata/python.d/mysql.conf</code> with content below.</p>
|
||||
<div class="admonition attention">
|
||||
<p class="admonition-title">Attention</p>
|
||||
<ul>
|
||||
<li>This file already exists, feel free to remove all content in this file
|
||||
and copy content below as its new content.</li>
|
||||
<li>Please replace <code><password></code> below by the real password.</li>
|
||||
</ul>
|
||||
</div>
|
||||
</li>
|
||||
</ul>
|
||||
<pre><code>socket:
|
||||
name : 'local'
|
||||
user : 'netdata'
|
||||
password : '<password>'
|
||||
database : 'postgres'
|
||||
</code></pre>
|
||||
|
||||
<h2 id="configure-nginx-to-forward-requests-to-netdata">Configure Nginx to forward requests to netdata</h2>
|
||||
<h2 id="system-tuning">System tuning</h2>
|
||||
<p>To get better performance, netdata requires few sysctl settings. Please add
|
||||
lines below in <code>/etc/sysctl.conf</code>:</p>
|
||||
<pre><code>vm.dirty_expire_centisecs=60000
|
||||
vm.dirty_background_ratio=80
|
||||
vm.dirty_ratio=90
|
||||
</code></pre>
|
||||
|
||||
<p>Also increase max open files limit. </p>
|
||||
<pre><code>mkdir -p /etc/systemd/system/netdata.service.d
|
||||
</code></pre>
|
||||
|
||||
<p>Create file <code>/etc/systemd/system/netdata.service.d/limits.conf</code>:</p>
|
||||
<pre><code>[Service]
|
||||
LimitNOFILE=30000
|
||||
</code></pre>
|
||||
|
||||
<p>Reload systemd daemon:</p>
|
||||
<pre><code>systemctl daemon-reload
|
||||
</code></pre><div class="footer">
|
||||
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