No protocol specified, Could not initialize class sun.awt.X11.XToolkit [Oracle install via VNC]

Do not run vncserver as a root, a don't do 'su oracle'. Start VNC sever as a plain user, start runInstaller within his VNC session.

Simulate long distance data center connection

[root@eai-node-01 ~]# modprobe sch_netem; tc qdisc add dev bond0 root netem delay 10ms  5ms 25%
[root@eai-node-01 ~]# ping eai-node-02.local
PING eai-node-02.local (192.168.100.202) 56(84) bytes of data.
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=1 ttl=64 time=14.5 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=2 ttl=64 time=11.6 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=3 ttl=64 time=9.37 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=4 ttl=64 time=14.5 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=5 ttl=64 time=14.8 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=6 ttl=64 time=14.0 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=7 ttl=64 time=13.9 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=8 ttl=64 time=11.7 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=9 ttl=64 time=11.3 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=10 ttl=64 time=10.1 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=11 ttl=64 time=7.36 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=12 ttl=64 time=6.50 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=13 ttl=64 time=7.04 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=14 ttl=64 time=9.13 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=15 ttl=64 time=14.0 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=16 ttl=64 time=9.01 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=17 ttl=64 time=6.72 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=18 ttl=64 time=9.01 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=19 ttl=64 time=9.53 ms
^C
--- eai-node-02.local ping statistics ---
53 packets transmitted, 53 received, 0% packet loss, time 52133ms
rtt min/avg/max/mdev = 5.188/10.388/14.837/2.724 ms
[root@eai-node-01 ~]# tc qdisc del root dev bond0
[root@eai-node-01 ~]# tc qdisc
qdisc mq 0: dev eth0 root
qdisc mq 0: dev eth1 root
[root@eai-node-01 ~]# ping eai-node-02.local
PING eai-node-02.local (192.168.100.202) 56(84) bytes of data.
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=1 ttl=64 time=0.161 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=2 ttl=64 time=0.172 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=3 ttl=64 time=0.139 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=4 ttl=64 time=0.145 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=5 ttl=64 time=0.162 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=6 ttl=64 time=0.133 ms
^C
--- eai-node-02.local ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5983ms
rtt min/avg/max/mdev = 0.133/0.152/0.172/0.013 ms


[root@eai-node-01 ~]# tc qdisc add dev bond0 root netem loss 30% 25%
[root@eai-node-01 ~]# ping eai-node-02.local
PING eai-node-02.local (192.168.100.202) 56(84) bytes of data.
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=1 ttl=64 time=0.157 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=2 ttl=64 time=0.138 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=3 ttl=64 time=0.204 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=4 ttl=64 time=0.174 ms

[root@eai-node-01 ~]# tc qdisc del root dev bond0
[root@eai-node-01 ~]# tc qdisc add dev bond0 root netem delay 10ms reorder 25% 50%
[root@eai-node-01 ~]# ping eai-node-02.local
PING eai-node-02.local (192.168.100.202) 56(84) bytes of data.
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=1 ttl=64 time=10.2 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=2 ttl=64 time=10.2 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=3 ttl=64 time=0.153 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=4 ttl=64 time=10.1 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=5 ttl=64 time=7.88 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=6 ttl=64 time=10.1 ms
64 bytes from eai-node-02.local (192.168.100.202): icmp_seq=7 ttl=64 time=10.2 ms

[root@eai-node-02 ~]# modprobe ifb
[root@eai-node-02 ~]# ip link set dev ifb0 up
[root@eai-node-02 ~]# tc qdisc add dev bond0 ingress
[root@eai-node-02 ~]# tc filter add dev bond0 parent ffff: protocol ip u32 match ip dport 7789 0xffff flowid 1:1 action mirred egress redirect dev ifb0
Action 4 device ifb0 ifindex 5
[root@eai-node-02 ~]# tc qdisc add dev ifb0 root netem delay 7ms

Tune OS for GlusterFS

Jak na RHEL6 zainstalować Btrfs od Oracle-a

#[root@eai-node-02 /]# cd /etc/yum.repos.d
#[root@eai-node-02 /]# wget https://public-yum.oracle.com/public-yum-ol6.repo
#[root@eai-node-02 yum.repos.d]# yum --nogpgcheck --disablerepo=* --enablerepo=ol6_UEK_latest install kernel-uek
#[root@eai-node-02 yum.repos.d]# yum --nogpgcheck --disablerepo=* --enablerepo=ol6_UEK_latest install btrfs-progs

Skuteczny monitoring EAI

• logi błędów przetwarzane są automatycznie i na ich podstawie generowane są alerty (mail, sms)
• alert zawiera link do dokumentacji komponentowej (jeśli w bazie reguł nie ma poprawnego linku, problem 'za karę' obsługuje przełożony utrzymania)
• dokumentacja komponentowa to jeden dokument MS Word/Open Document, w którym można zrobić Ctrl+F po znaczącej frazie z alertu i w ten sposób zobaczyć znane problemy i obejścia
• dokumentacja komponentowa zawiera miesięczny grafik wsparcia: osoba obsługująca + osoba zapasowa (jeśli wpisy nie są poprawne, problem 'za karę' obsługuje przełożony utrzymania)
• monitoring i wsparcie powinno opierać się na wyuczonych, ustandaryzowanych, procesowych procedurach postępowania

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