---
tags:
- centos
- redhat
- linux
- guide
---
Installed [AIDE](http://aide.sourceforge.net/) `v0.13.1-6.el5_8.2`
on CentOS 5.8 x86\_64
Notes
-----
### Installation
```bash
yum -y install aide
cp /etc/aide.conf{,.original}
```
### Configuration
The `aide.conf` file has selinux entries which you [might want to
redefine](http://backdrift.org/how-to-fix-aide-lgetfilecon_raw-failed-for-no-data-available-errors?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Backdrift+%28Backdrift%29)
to prevent "`lgetfilecon_raw failed`" errors. Here are my definitions:
```
ALLXTRAHASHES = sha1+rmd160+sha256+sha512+tiger
EVERYTHING = p+i+n+u+g+s+m+c+acl+xattrs+md5+ALLXTRAHASHES
NORMAL = p+i+n+u+g+s+m+c+acl+xattrs+md5+rmd160+sha256
DIR = p+i+n+u+g+acl+xattrs
PERMS = p+i+u+g+acl
LOG = p+u+g+i+n+S+acl+xattrs
LSPP = p+i+n+u+g+s+m+c+acl+xattrs+md5+sha256
DATAONLY = p+n+u+g+s+acl+xattrs+md5+sha256+rmd160+tiger
```
Read the file, determine what you need, and add/adjust entries
accordingly.
### Initialization
```bash
aide --init
```
This creates `/var/lib/aide/aide.db.new.gz`. **Back up this file to a
safe and secure place off this server!** Now rename the file:
```bash
mv /var/lib/aide/{aide.db.new.gz,aide.db.gz}
```
### Checking
```bash
# On the system
aide --check
# Comparing outside the system
aide --compare old.db.gz new.db.gz
```