Аккаунт в General iT
Войдите или создайте аккаунт для управления услугами в личном кабинете.
Страны не найдены. Попробуйте другое название или код.
Practical tips and verified solutions for Linux, servers and websites.
How to read a dig DNS response: real examples of NOERROR with addresses, empty NODATA responses, and NXDOMAIN. Status, TTL, and the next verification step without changing the network.
Quick diagnostics with ip: interfaces, addresses, and the selected route to the recipient. Helps gather facts without risking loss of remote access.
How to link a timer to the service it launches, verify past and next executions, and avoid mistaking an active timer for a successful task.
Filter messages by service, boot, and time to analyze a specific failure without dumping the entire journal and losing critical lines.
How to read the systemd service state, distinguish process startup from application readiness, and gather facts before changing the server state.
We explain Linux load average: why it cannot be read as CPU percentages and how to correlate it with the number of processors and resource wait times.
We analyze the situation where Linux reports no space despite free disk capacity: how to check inodes and find directories with a high number of files.
How to identify the filesystem running out of space and compare its metrics with directory sizes without blindly deleting data.
Check the user, schedule, and Cron environment without manually re-running a potentially dangerous task or modifying crontab.
How to link a site path to a mount point and block device without confusing disk size, partition, and file system.
First look at the query plan: selected indexes, row estimates, and access order. We explain why EXPLAIN ANALYZE requires a separate solution.
Compare current connections, active threads, and the server limit to identify the cause of failures before increasing the connection limit.
Page 5 of 6
