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31 entries match these filters
- 0239 Fix: (error) NOAUTH Authentication required. (and securing Redis with ACLs) Redis requires a login and your client sent a command without one. Pass the right user and password, and use the moment… Advanced · Fix · Linux Article Administration & persistence · Security & access 15 Oct 2026
- 0242 Database security checklist: access, encryption, exposure and patching A practical checklist for hardening any database server, with MongoDB and Redis examples: no public exposure, authentication, least privilege, TLS, protected backups,… Advanced · How-to · Linux Article Database operations · Security & access 15 Oct 2026
- 0258 Build a MySQL 8.4 source-replica pair with GTIDs and rehearse a manual failover Set up GTID replication between two MySQL 8.4 servers, provision the replica with the clone plugin, then stop the source, promote the… Advanced · Tutorial · Linux Article Administration · Replication 15 Oct 2026
- 0203 Physical backups and point-in-time recovery with pg_basebackup and WAL archiving A base backup plus a continuous archive of WAL files lets you restore a PostgreSQL cluster to any moment after the backup,… Advanced · Concept · Linux Article Backup & restore · Replication & high availability 15 Oct 2026
- 0205 Set up PostgreSQL streaming replication with a hot standby Step-by-step: prepare a primary, clone it with pg_basebackup, start a read-only standby that streams WAL, check it works, and understand promotion and… Advanced · How-to · Linux Article Replication & high availability 15 Oct 2026
- 0208 Check PostgreSQL replication lag with a monitoring script A bash check that detects whether it runs on a primary or a standby, measures replication lag in bytes and seconds, and… Advanced · How-to · Linux Script Replication & high availability 15 Oct 2026
- 0217 MySQL binary logs and point-in-time recovery The binary log records every change after your last backup. Restore the backup, then replay the binary log up to just before… Advanced · Concept · Linux Article Backup & restore · Replication 15 Oct 2026
- 0218 Setting up MySQL source-replica replication with GTIDs Step by step: configure a MySQL 8.4 source and replica with GTIDs, create the replication account, copy the data, connect the replica… Advanced · How-to · Linux Article Administration · Replication 15 Oct 2026
- 0224 RMAN backup basics: ARCHIVELOG mode, a nightly backup script and restore Enable ARCHIVELOG mode, set an RMAN retention policy, run a nightly full backup with archived logs from cron, and learn the restore… Advanced · How-to · Linux Script Administration · Backup with RMAN 15 Oct 2026
- 0184 Ansible Vault: keep passwords and keys encrypted in your repo Ansible Vault encrypts variable files or single values so secrets can live in Git next to your playbooks. Create, edit and rekey… Advanced · How-to · Linux, macOS Article Ansible 15 Oct 2026