Tags » Sysctl

Setup HA-Proxy with Keepalived

Two Ubuntu 14.04 servers

hostnames and IP addresses:

    haproxy1 (
    haproxy2 (

We’ll also need to allocate a third IP address to use as the virtual IP address (VIP).   402 more words

PRCR-1079 CRS-2674 CRS-5017 ORA-27102: out of memory Linux-x86_64 Error: 28: No space left on device

# Problem

myserver:/home/oracle>srvctl start database -d mydb
PRCR-1079 : Failed to start resource ora.mydb.db
CRS-5017: The resource action "ora.mydb.db start" encountered the following error:
ORA-27102: out of memory
Linux-x86_64 Error: 28: No space left on device
. 123 more words

Tuning Server dengan Load Transaksi yang tinggi [Nginx, uwsgi, Sysctl]

Tulisan ini merupakan arsip dan catatan pribadi saya bagaimana mengoptimalisasi server produksi dengan beban transaksi yang sangat banyak.  Langkah pertama adalah memastikan Socket Tuning, terutama pada bagian meningkatkan parameter nilai incoming connection dengan tujuan server produksi ini dapat menampung request dalam jumlah besar, parameter nilai… 120 more words


Tuning TCP Application Performance

There are some good articles online about overriding the default Linux TCP receive and send window buffer sizes; but I want to extend this topic into more in depth analysis. 634 more words

Linux Ubuntu

Runtime configuring printk - stop kernel printk from flooding the console

Sometimes while debugging kernel/module, unnecessary kernel messages keeps flooding console such that you are not able to have access of console in useful manner to check output of a command or do some task. 232 more words