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b79d106c56
* fix: errors with missing posix extension It should be an optional dependency * add php71w-process to the CentOS 7 install docs
210 lines
6.7 KiB
Markdown
210 lines
6.7 KiB
Markdown
source: Installation/Installation-CentOS-7-Nginx.md
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> NOTE: These instructions assume you are the **root** user. If you are not, prepend `sudo` to the shell commands (the ones that aren't at `mysql>` prompts) or temporarily become a user with root privileges with `sudo -s` or `sudo -i`.
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## Install Required Packages ##
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yum install epel-release
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rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
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yum install cronie fping git ImageMagick jwhois mariadb mariadb-server mtr MySQL-python net-snmp net-snmp-utils nginx nmap php71w php71w-cli php71w-common php71w-curl php71w-fpm php71w-gd php71w-mcrypt php71w-mysql php71w-process php71w-snmp php71w-xml php71w-zip python-memcached rrdtool
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#### Add librenms user
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useradd librenms -d /opt/librenms -M -r
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usermod -a -G librenms nginx
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#### Install LibreNMS
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cd /opt
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git clone https://github.com/librenms/librenms.git librenms
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## DB Server ##
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#### Configure MySQL
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systemctl start mariadb
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mysql -u root
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> NOTE: Please change the 'password' below to something secure.
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```sql
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CREATE DATABASE librenms CHARACTER SET utf8 COLLATE utf8_unicode_ci;
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CREATE USER 'librenms'@'localhost' IDENTIFIED BY 'password';
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GRANT ALL PRIVILEGES ON librenms.* TO 'librenms'@'localhost';
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FLUSH PRIVILEGES;
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exit
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```
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vi /etc/my.cnf
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> NOTE: Whilst we are working on ensuring LibreNMS is compatible with MySQL strict mode, for now, please disable this after mysql is installed.
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Within the `[mysqld]` section please add:
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```bash
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innodb_file_per_table=1
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sql-mode=""
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lower_case_table_names=0
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```
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systemctl enable mariadb
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systemctl restart mariadb
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## Web Server ##
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### Configure and Start PHP-FPM
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Ensure date.timezone is set in php.ini to your preferred time zone. See http://php.net/manual/en/timezones.php for a list of supported timezones. Valid examples are: "America/New_York", "Australia/Brisbane", "Etc/UTC".
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vi /etc/php.ini
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In `/etc/php-fpm.d/www.conf` make these changes:
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vi /etc/php-fpm.d/www.conf
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```nginx
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;user = apache
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user = nginx
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group = apache ; keep group as apache
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;listen = 127.0.0.1:9000
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listen = /var/run/php-fpm/php7.1-fpm.sock
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listen.owner = nginx
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listen.group = nginx
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listen.mode = 0660
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```
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systemctl enable php-fpm
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systemctl restart php-fpm
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### Configure NGINX
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vi /etc/nginx/conf.d/librenms.conf
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Add the following config, edit `server_name` as required:
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```nginx
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server {
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listen 80;
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server_name librenms.example.com;
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root /opt/librenms/html;
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index index.php;
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charset utf-8;
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gzip on;
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gzip_types text/css application/javascript text/javascript application/x-javascript image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon;
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location / {
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try_files $uri $uri/ /index.php?$query_string;
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}
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location /api/v0 {
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try_files $uri $uri/ /api_v0.php?$query_string;
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}
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location ~ \.php {
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include fastcgi.conf;
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fastcgi_split_path_info ^(.+\.php)(/.+)$;
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fastcgi_pass unix:/var/run/php-fpm/php7.1-fpm.sock;
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}
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location ~ /\.ht {
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deny all;
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}
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}
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```
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> NOTE: If this is the only site you are hosting on this server (it should be :)) then you will need to disable the default site.
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Delete the `server` section from `/etc/nginx/nginx.conf`
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systemctl enable nginx
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systemctl restart nginx
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#### SELinux
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Install the policy tool for SELinux:
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yum install policycoreutils-python
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Configure the contexts needed by LibreNMS:
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semanage fcontext -a -t httpd_sys_content_t '/opt/librenms/logs(/.*)?'
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semanage fcontext -a -t httpd_sys_rw_content_t '/opt/librenms/logs(/.*)?'
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restorecon -RFvv /opt/librenms/logs/
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semanage fcontext -a -t httpd_sys_content_t '/opt/librenms/rrd(/.*)?'
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semanage fcontext -a -t httpd_sys_rw_content_t '/opt/librenms/rrd(/.*)?'
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restorecon -RFvv /opt/librenms/rrd/
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setsebool -P httpd_can_sendmail=1
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setsebool -P httpd_execmem 1
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#### Allow access through firewall
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firewall-cmd --zone public --add-service http
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firewall-cmd --permanent --zone public --add-service http
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firewall-cmd --zone public --add-service https
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firewall-cmd --permanent --zone public --add-service https
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#### Configure snmpd
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cp /opt/librenms/snmpd.conf.example /etc/snmp/snmpd.conf
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vi /etc/snmp/snmpd.conf
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Edit the text which says `RANDOMSTRINGGOESHERE` and set your own community string.
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curl -o /usr/bin/distro https://raw.githubusercontent.com/librenms/librenms-agent/master/snmp/distro
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chmod +x /usr/bin/distro
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systemctl enable snmpd
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systemctl restart snmpd
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### Cron job
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cp /opt/librenms/librenms.nonroot.cron /etc/cron.d/librenms`
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#### Copy logrotate config
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LibreNMS keeps logs in `/opt/librenms/logs`. Over time these can become large and be rotated out. To rotate out the old logs you can use the provided logrotate config file:
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cp /opt/librenms/misc/librenms.logrotate /etc/logrotate.d/librenms
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### Set permissions
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chown -R librenms:librenms /opt/librenms
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setfacl -d -m g::rwx /opt/librenms/rrd /opt/librenms/logs
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setfacl -R -m g::rwx /opt/librenms/rrd /opt/librenms/logs
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## Web installer ##
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Now head to the web installer and follow the on-screen instructions.
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http://librenms.example.com/install.php
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### Final steps
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That's it! You now should be able to log in to http://librenms.example.com/. Please note that we have not covered HTTPS setup in this example, so your LibreNMS install is not secure by default. Please do not expose it to the public Internet unless you have configured HTTPS and taken appropriate web server hardening steps.
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#### Add the first device
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We now suggest that you add localhost as your first device from within the WebUI.
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#### Troubleshooting
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If you ever have issues with your install, run validate.php as root in the librenms directory:
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cd /opt/librenms
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./validate.php
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There are various options for getting help listed on the LibreNMS web site: https://www.librenms.org/#support
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### What next?
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Now that you've installed LibreNMS, we'd suggest that you have a read of a few other docs to get you going:
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- [Performance tuning](http://docs.librenms.org/Support/Performance)
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- [Alerting](http://docs.librenms.org/Extensions/Alerting/)
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- [Device Groups](http://docs.librenms.org/Extensions/Device-Groups/)
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- [Auto discovery](http://docs.librenms.org/Extensions/Auto-Discovery/)
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### Closing
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We hope you enjoy using LibreNMS. If you do, it would be great if you would consider opting into the stats system we have, please see [this page](http://docs.librenms.org/General/Callback-Stats-and-Privacy/) on what it is and how to enable it.
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If you would like to help make LibreNMS better there are [many ways to help](http://docs.librenms.org/Support/FAQ/#what-can-i-do-to-help). You can also [back LibreNMS on Open Collective](https://t.libren.ms/donations).
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