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Check SSL Certificate mismatch
You can check if an SSL certificate matches a Private Key by using the 3 easy commands below. For your SSL certificate: openssl x509 -noout -modulus -in <file>.crt | openssl md5 For your RSA private key: openssl rsa -noout -modulus -in <file>.key | openssl md5 For your CSR: openssl req -noout -modulus -in <file>.csr | […]
Send SNMP Traps from Nagios to Remote Management Host
1. Add ‘send snmp trap’ command to nagios vim /usr/local/nagios/etc/objects/commands.cfg define command{ command_name send_snmptrap command_line /usr/bin/snmptrap -v 2c -c public 10.50.24.34 ” NAGIOS-NOTIFY-MIB::nSvcEvent nSvcHostname s “$HOSTNAME$” nSvcDesc s “$SERVICEDESC$” nSvcStateID i $SERVICESTATEID$ nSvcOutput s “$SERVICEOUTPUT$” } 2. Add this event and enable the event to services which needed to send traps vim /usr/local/nagios/etc/objects/localhost.cfg define service{ […]
Setting Up an NFS Server and Client on CentOS 7
I’m using two CentOS systems here: NFS Server: server.example.com, IP address: 192.168.1.100 NFS Client: client.example.com, IP address: 192.168.1.101 Configure the Firewall firewall-cmd –permanent –zone=public –add-service=nfs firewall-cmd –reload Installing NFS and enable and start the nfs server service.(Client / Server) yum -y install nfs-utils systemctl enable nfs-server.service systemctl start nfs-server.service Exporting Directories on the Server mkdir […]