DevOps & Infrastructure

SpamCop's RBL blocklist is flagging legitimate Facebook servers - if you use it, verify your allowlist.

Google's Webmaster Tools now lets you tell crawlers to ignore session parameters like JSESSIONID.

Automate ClamAV virus scanning on Linux with cron and firewall tuning for continuous protection.

Find IPs hammering your web server with a single command: `cut -d ' ' -f 2 | sort | uniq -c | sort -nk 1`

After a hard drive failure, I moved backups to Amazon S3 - cheap, remote, and fast enough for cost-effective disaster recovery.

Server hard drive failed - don't forget to back up /etc and apt package lists along with your data.

Hudson's February 2009 update fixed one bug but broke ant spawn tasks - upgraded builds stop starting application servers.

CDNs boost end-user performance 20-25% while slashing server load - geographic distribution wins.

Monster.com breach: user IDs, passwords, emails compromised. Change yours now.

Comcast 50/10 launches in my area - blazing speeds after the kinks get ironed out.

Server migration complete - sites, apps, and email now live elsewhere. Report issues if you spot them.

mod_deflate + mod_cache = cache explosion. Compression multiplies files - separate or carefully manage.

AT&T DNS servers hit by cache poisoning attacks; vulnerable servers can poison others through trust chains - widespread problem.

Load average 239+ but SSH worked perfectly: Debian + PostgreSQL kept systems responsive even under extreme duress.

Two iptables rules throttle brute-force SSH attacks: three tries, then a three-minute lockout that bots can't bypass.

Strip jsessionid from URLs entirely instead of redirecting - prevent Google from indexing session chaos.

Google crawlers skip jsessionid parameters, diluting your rank. Mod_rewrite strips them cleanly without breaking sessions.

Spark::red specializes in ATG hosting with response times measured in days, not months.

Load balance with redundancy, monitoring, and failover - 13 steps to bulletproof uptime.

Block wireless leeches? Get creative - upside-down internet redirects everything.