davidodwyer.com - bits and bobs and bash
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About Me
A Systems Consultant with over 11 years’ experience in dev and operations management, high availability web services and internet technologies.
At the moment most of my work is based around Amazon Web Services, Apache Solr and the Drupal Framework.
Recent blog posts
- Howto: Shrink an EXT3 partition on LVM to free up available extents
- Howto: Install Apache Solr 1.4.1 on CentOS / Drupal 6
- Script: Amazon EC2 MySQL Backup Toolkit
- Howto: Install GlusterFS 3.0.4 - RHEL 5.4 / Debian Lenny
- One-Liner: Hold back apache2 from apt-get upgrade
- Webinar: How I learned to stop worrying and love the cloud
- Script: quick drupal module updater
- Script: rsnapshot_check - rsnapshot remote backup check - v0.5
- Poor Mans MySQL Query Logging
- PHP: Simple Process Start / Stop
Howto: Shrink an EXT3 partition on LVM to free up available extents
We currently have an ext3 partition running on LVM which is using all of the 20G disk allocation (doh!) so we are unable to create any snapshots due to:
"Insufficient Free Extents Available"
We want to reduce the partition size to 15G so we have 5G to play with for snapshots and other LVM goodness.
First we umount our directory if it is currently in use:
umount /data/dir/in/use
We then run a fsck on our device
e2fsck -f /dev/path/to/lvm/
We then resize the ext3 partition "before" we resize the LVM partition
resize2fs -p /dev/path/to/lvm/ 15G
Then we resize the the LVM parition using the imaginatively named lvresize
lvresize /dev/path/to/lvm/ --size 15G
And we're done. Yay!
Howto: Install Apache Solr 1.4.1 on CentOS / Drupal 6
Setup Single Core Solr on CentOS
Upgrade Java
yum remove java yum install java-1.6.0-openjdk yum install java-1.6.0-openjdk-devel
Install Tomcat5
sudo yum install -y tomcat5
Script: Amazon EC2 MySQL Backup Toolkit
#!/bin/bash # # Amazon EC2 MySQL Backup Toolkit # # do_mysql_backup v1.0 - David O'Dwyer # # Basic wrapper for EBS snapshots / mylvmbackup. # Assumes ec2-api-bin and mylvmbackup installed # and MySQL data directory located on LVM partition # ########################################
| Attachment | Size |
|---|---|
| do_mysql_backup.sh | 3.67 KB |