06Writes are failing with no space left on device, but df shows 40% free. What is going on?▼mediumNewAmazonRed HatTCS1 repliesunlockedTwo different resources produce the same errno, and the second one is invisible unless you know to look. One command distinguishes them.Open full answer →
08Hard link or symlink: what actually differs, and when does the choice bite you?▼easyNewRed HatTCSInfosys1 repliesunlockedA beginner question with a senior follow-up hiding in it. Once you know a hard link is a second name for an inode, log rotation and backup behaviour both stop being mysterious.Open full answer →
12We resized the cloud volume but df still shows the old size. Walk me through extending the filesystem live.▼mediumNewInfosysWalmart Global TechOracle○ sign inA routine cloud operation with three layers that can quietly disagree. The strong answer is an ordered procedure you could run during business hours, without a reboot.Open full answer →
22You are on a locked-down host with no agents installed. Which /proc files answer your first troubleshooting questions?▼easyNewDatadogNetflixRed Hat◆ premiumEverything top, htop and your APM agent display is derived from procfs anyway. Knowing the raw files turns any bare SSH session into a monitoring console.Open full answer →
