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Category: Linux


Sarg ate inodes

Posted by in Fixing, Linux, Monitoring, Network

An index node (or inode) contains metadata information (file size, file type, etc.) for a file system object (like a file or a directory). There is one inode per file system object. An inode doesn’t store the file contents or the name: it simply points to a specific file or directory. check inode


Optimize HDD IO

Posted by in Hardening, Linux, Storage

add /etc/sysctl.conf vm.dirty_ratio = 6 vm.dirty_background_ratio = 3 vm.vfs_cache_pressure = 50 vm.swappiness = 1 load sysctl -p add /etc/udev/rules.d/10-local.rules ACTION==”add|change”, KERNEL==”sd[a-z]”, ATTR{queue/rotational}==”0″, ATTR{queue/scheduler}=”deadline”


Install Shipyard

Posted by in Automation, Linux, Packages, Virtualization

Shipyard yum install http://www.mirrorservice.org/sites/dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm yum -y install docker-io vim-enhanced vim /etc/sysconfig/docker # Replace other_args=”” with other_args=”-H tcp://127.0.0.1:4243 -H unix:///var/run/docker.sock” service docker start chkconfig docker on docker run -i -t -v /var/run/docker.sock:/docker.sock shipyard/deploy setup


Change RSA passphrase

Posted by in Linux, Remote, Security

ssh-keygen -f ~/.ssh/id_rsa -p


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