Installation Readiness¶

Setup¶

Verify Root access
Verify whether global users exist in the domain. PostgreSQL is the most frequently found conflict. If any Linux user already exists in the domain, pre-create the conflicting users. Check using the command:
```
id postgres
```
CPU: Check the number of cores
```
grep -i processor /proc/cpuinfo
```
CPU: Check the architecture (64/32-bit)
```
sudo lscpu | grep -E Architecture
```
CPU: Check the CPU MHz
```
sudo lscpu | grep -E "CPU|Hz"
```
RAM: Check the RAM size
```
free -g
```
Disks and File Systems
- Root filesystem
  - Verify enough space to install under /opt
    df -hT /opt
- Data and Backup Disks:
  - Check that data and backup disks are mounted,
  - check sizes, verify enough space to backup (backup >= data size)
    df -hT mount -l
- Check mount settings in /etc/fstab
  - Verify data and backup mounts are entered
  - Verify nosuid and noexec option are not used
    cat /etc/fstab | grep nosuid
    - Edit /etc/fstab to remove nosuid if found.
      cat /etc/fstab | grep noexec
    - Edit /etc/fstab to remove noexec if found.

Check OS version

cat /etc/centos-release

(or)

cat /etc/os-release

DNS
- Confirm that Alation has access to the DNS
Authentication Mechanism
- Confirm port 80 is open
Email
- Confirm ports are open
- Confirm connectivity to corp email server (telnet or dig can be used)
Confirm Unix users are created, if necessitated by environment requirements
- Check /etc/passwd, /etc/group
LDAP/LDAPS
- Confirm access to server on port 389/636
- Confirm LDAP credentials and setup
Usage Stats
- Confirm connectivity to outbound TCP connection to IP 52.4.59.229 port 443

Verify that the new system can access the data sources, (per ports listed for each Data Source type.

Verify connectivity over ports listed in the Network Requirements section. Use the following command to check the functioning of ports:
curl -v telnet://<IP>:<PORT>
Note

You can alternatively use the nc command if it is installed on the host:
nc -zv <IP> <PORT>
For UDP ports:
nc -zv <IP> <PORT>-u
In cloud environments, the LDAP ports get closed. A quick way to check multiple ports at one time is by adding space between ports:
nc -zv 127.0.0.1 22 80 8080
Use the following command to return all services and the ports they are listening on:
netstat -plnt
Confirm handling of usage stats.

For each data source:

Verify connectivity from Alation system to data source
Verify authentication type
Confirm service account uses the same authentication type as users
Verify service account creation with appropriate permissions to run MDE, Profiling (if desired), and QLI
Verify that the Query Log Ingestion setup is completed