Linux, Unix and Sysadmin How-Tos
Configure DM-Multipath for Oracle RAC shared storage on Oracle Linux 9: WWIDs, multipath.conf defaults, blacklist and aliases, no_path_retry for RAC, initramfs, path failover tests, grid:asmadmin ownership and the ASM discovery string.
Configure Certificate Authority(CA) CentOS 6 Configure Certificate Authority(CA) CentOS 6 Here’s the basic steps needed to configure an Internal Certificate Authority (CA) on CentOS 6 Login, and su to root…
The six Solaris 10 software groups (SUNWCrnet to SUNWCXall), how .clustertoc builds them, customizing during interactive and JumpStart installs, checking and adding packages with pkginfo and pkgadd, safe minimization, zones and patching, plus Solaris 11.4 group packages.
Encrypt MariaDB 10.11 connections on AlmaLinux 10: build a private CA and SAN certificates with openssl, enable ssl_cert/ssl_key/ssl_ca, REQUIRE SSL/X509 and require_secure_transport, verify clients, encrypt Galera and SST traffic, handle HAProxy and rotate certificates with FLUSH SSL, then fix the common MariaDB errors (1045, 2002, 1040, 1205, 1213, 2013, 1146, 1047, TLS errors).
Configure Account Lockout Policy CentOS Configure Account Lockout Policy CentOS every once in a while you have a special circumstance where you would need an account lockout policy (such as…
Add Logging to Apache VirtualHost CentOS 6 Add Logging to Apache VirtualHost CentOS 6 By default, Apache writes all logs for as many virtual hosts as you can add to…
A step-by-step Solaris 10 1/13 x86 install: legacy BIOS and SATA mode, the GRUB install menu and serial console entries, installation types, keyboard and sysidtool screens, the Solaris2 fdisk partition and VTOC slices, ZFS or UFS root, first boot, verification and mirroring.
Tune MariaDB on AlmaLinux 10: size the InnoDB buffer pool and redo log, set flush, connection and temp table limits, enable and rotate the slow query log, analyze it with mariadb-dumpslow and pt-query-digest, and fix slow queries with EXPLAIN, ANALYZE and indexes.
Change Oracle Linux Run Level Change Oracle Linux Run Level in this example, we have Oracle 11gR2 Installed On Oracle Linux, but we only want to use the GUI when…
A screen-by-screen Solaris 10 1/13 SPARC install over the serial console: boot cdrom – nowin, terminal type and Esc-2 keys, sysidtool identification, software groups, ZFS vs UFS root, SMI labels, boot-device, verification and LDoms guests.
