Category: Uncategorized

Gather metatdata on AWS from within EC2 instance.

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So I need to get information about a particular set of machines in the cloud (AWS). EC2_INSTANCE_ID="`wget -q -O – http://instance-data/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`" test -n "$EC2_INSTANCE_ID" || die 'cannot obtain instance-id' EC2_AVAIL_ZONE="`wget -q -O – http://instance-data/latest/meta-data/placement/availability-zone || die \"wget availability-zone has failed: $?\"`" test -n "$EC2_AVAIL_ZONE" || die 'cannot obtain…

package.json sample

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This is the basic structure for a node.js package file { "name": "Express-Basic", "description": "Demonstrating Express", "version": "0.0.1", "private": true, "dependencies": { "express": "3.x" } } nJoy 😉

Kernel: e1000e 0000:02:00.0: eth0: Error reading PHY register

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In recent CentOS version 6.3 is an unresolved bug, which causes the network card to freeze the server. Following message appears in /var/log/messages kernel To work around the problem you will need to turn off Active-State Power Management (ASPM) (Feature that saves power in the Peripheral Component Interconnect Express (PCI Express or PCIe) subsystem by…

Set timezone Centos

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vim /etc/sysconfig/clock ZONE=”Europe/London”   ln -sf /usr/share/zoneinfo/Europe/London /etc/localtime done.. nJoy 😉  

Sending Elasticsearch to a syslog server

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yum install rsyslog -y Add the following to rsyslog.conf on the client system ############ $ModLoad imfile $InputFileName /var/log/elasticsearch/elasticsearch.log $InputFileTag elasticsearch $InputFileStateFile stat-elasticsearch $InputFileSeverity Info $InputFileFacility daemon $InputRunFileMonitor #local3.* hostname:<portnumber> daemon.* @192.168.1.66:514 ############   Also if you want all logs to go through to syslog server:   *.* @192.168.1.66   at the end of the file….