Also as I just installed monit service on one host …

Thursday, 28th March 2024

Comment on Monitoring and restart server services (Apache, Mysql, Bind) with Monit to prevent server downtimes by admin.

Also as I just installed monit service on one host with Debian Squeeze I can confirm. Config is working fine with Debian Squeeze shipped monit version:

pcfreak:~# dpkg -l |grep ‘^ii monit’
ii monit 1:5.1.1-1 A utility for monitoring and managing daemons or similar programs

admin Also Commented

Monitoring and restart server services (Apache, Mysql, Bind) with Monit to prevent server downtimes

If you have more than one server that you need to monitor, then you can use M/Monit– an extended version of Monit that provides a simple way to monitor multiple machines.


Monitoring and restart server services (Apache, Mysql, Bind) with Monit to prevent server downtimes
Also the monitrc config from my article is configured to check and report for “disk full” and low disk space on /dev/md0 which used to be a software mirror type RAID1. Therefore config in monitrc reads:


check device disk1 with path /dev/md0

On other non-RAIDed disks, usually the disk to monitor is /dev/sda1 or /dev/sdb1

Thus if you’re not using a hardware or software mirror probably this config section should be substituted with:
check device disk1 with path /dev/sda1, i.e.:


check device disk1 with path /dev/sda1


Monitoring and restart server services (Apache, Mysql, Bind) with Monit to prevent server downtimes
Also i’ve figured out later. This alerts as I configured in this article might be sometimes really annoying if you receive e-mails every few seconds. Hence it might be good idea to comment alerts in my monitrc sample conf:

To do so, remove or comment lines in Apache and MySQL monit config section:


## if cpu usage is greater than 80 percent for 3 cycles then alert


## if cpu is greater than 50% for 2 cycles then alert


Recent Comments by admin

Install and configure rkhunter for improved security on a PCI DSS Linux / BSD servers with no access to Internet
       –rwo, –report-warnings-only
              This option causes only warning messages to be displayed. This can be useful when rkhunter is run via cron. Other options may
              be used to force other items of information to be displayed.

       –sk, –skip-keypress
              When  the  –check command option is used, after certain sections of tests, the user will be prompted to press the return key
              in order to continue. This option disables that feature, and rkhunter will run until all the tests have completed.

         


Install and configure rkhunter for improved security on a PCI DSS Linux / BSD servers with no access to Internet
As rkhunter check, can be pretty annoying and ask you to press keypresses multiple times and spit you a lot of unnecessery data a very good useful option arguments are:

–rwo and –sk

# rkhunter -c –rwo –sk
Warning: The SSH and rkhunter configuration options should be the same:
         SSH configuration option 'PermitRootLogin': yes
         Rkhunter configuration option 'ALLOW_SSH_ROOT_USER': no


Fix eth changing network interface names from new Linux naming scheme ens, eno, em1 to legacy eth0, eth1, eth2 on CentOS Linux

Sorry for really late reply.

perhaps you have to create it or rename the ifcfg-eno1 to ifcfg-eth1 or you have some old ifcfg-enp1s0f0 or ifcfg-eno still under /etc/sysconfig/network-scripts/ interfering


How to RPM update Hypervisors and Virtual Machines running Haproxy High Availability cluster on KVM, Virtuozzo without a downtime on RHEL / CentOS Linux
if you happen to be missing versionlock plugin and you need to get use of it

yum versionlock capabilities

You will have to install yum-utils package:

For example on CentOS 8 Linux, to enable the yum versionlock plugiun

yum install yum-utils.noarch


How to log every Linux executed command by every running system program to separte log via rsyslog for better server Security and audit trails

In case if by default log is not configured for snoopy,
these are default output locations on various Linux distributions:

Distribution Snoopy output location Notes
CentOS /var/log/secure  
Debian /var/log/auth.log  
Ubuntu /var/log/auth.log  
(others) /var/log/messages (potentially, could be elsewhere)

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