татко Крокодил

Ще се води нов курс във ФМИ – различни case studies от системната и мрежова администрация с Linux. Курсът е всеки четвъртък в зала 325 на ФМИ, от 19:00 (някои дни може да е и от 18:00, ще се споменава предварително). Курса си има сайт, за момента ще го водим аз, Боян Кроснов, Мариан Маринов и Николай Недялков (ще се навива Владо Каравелов за последните неща около хардуера).

Ето го и конспекта:

00– architectures used in the case studies
01– recovery – building recovery systems
02– config management – svn/git
03– basic router – firewall, routing, openvpn, nat, bridge, bonding
04– policy routing/multihoming+NAT
N links, incoming DNAT, connmark
N links, outgoing SNAT, balancing
N links, load balancing/connection (2 subcases)
05– traffic control
latency optimization
fairness
deep packet inspection (layer 7 filtering)
06– dynamic routing
OSPF
BGP
VRRP
anycast
07– heartbeat failover
drbd/iscsi/FC
OCFS
application tracking (mysql)
08– load balancing
DNS loadbalancing
layer 4 loadbalancing (iptables/LVS)
layer 7 loadbalancing (squid/tomcat)
09– network troubleshooting
path mtu
layer 2 cases – unknown unicast flooding, mac address table problems
bgp problems – youtube problem, long prefix problem, uRPF
filter tracking (hping, tcptraceroute)
asymetric routing problems (looking glass)
10– system/kernel debugging
sigsegv tracing (gdb, ulimit), attaching gdb to live process
strace, ltrace (limitations) – ffmpeg case, libdb exim case
11– optimization
dynamic content/apache
static content
DB optimizations – indexes, query optimizations, explain
select * from pesho where pesho.a in (select gosho from table2);
hardware recommendations – db, router, storage, app server, voip server

Tags: курсове, ФМИ

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