Systems Monitoring

last updated on: October 13, 2021

Appliance Monitoring

You can use any tool that supports monitoring of CentOS 7.

We recommend monitoring the following parameters

Base OS

vmstat    
Procs           
r: The number of processes waiting for run time.           
b: The number of processes in uninterruptible sleep.     
Memory           
swpd: the amount of virtual memory used.           
free: the amount of idle memory.           
active: the amount of active memory.       
Swap           
si: Amount of memory swapped in from disk (/s).           
so: Amount of memory swapped to disk (/s).     
IO           
bi: Blocks received from a block device (blocks/s).           
bo: Blocks sent to a block device (blocks/s).     
CPU           
us: Time spent running non-kernel code. (user time, including nice time)           
sy: Time spent running kernel code. (system time)           
id: Time spent idle.             
st: Time stolen from a virtual machine.%%''

Disk Space

df -k
Filesystem                1K-blocks         Used Available Use% Mounted on/dev/mapper/VolGroup00-LogVol00                                 18187836    2903080   14345956   17% //dev/sda1
     101086        20047      75820   21% /boottmpfs
     512468            0     512468    0% /dev/shm%%'

MySQL

Number of connections

SHOW STATUS LIKE "Connections"

Network Usage

Monitor the network traffic using your monitoring system. Or you can get the information from

cat /proc/net/dev

Total Number of Processes

ps -e|sed 1d|wc -l

Recipes

Increasing Disk Space

To increase the disk space please follow the instructions at the following vmware kb article

Attaching a new Disk to The Appliance

To add a new disk to the appliance please follow the instructions at the following vmware kb article

Using a New Disk as Local Storage

The appliance is already configured with an FTP server listening on ip address 127.0.0.1 and port 2001.

  • Add a new user with user home directory located on the newly attached disk mounted at newdisk

    adduser   -b /newdisk   -s /sbin/nologin localstorage#change the

    passwd localstorage

  • Set home directory context for /newdisk/localstorage

    chcon -R -t userhomedir_t   /newdisk/localstorage

  • Now you can add the a FTP provider to your SME account using the credentials
    • account login:localstorage
    • account password: the password you entered for localstorage user
    • server host:ftp://127.0.0.1
    • server port:2001
    • server home directory:/