Di: Luciana

Luciana — Sat, 17 Nov 2007 17:02:13 +0000

Ciao Massimo,

ho letto qualche giorno fa la “conversazione” tra i due protagonisti “Alessandro e Federica” e ieri la spiegazione tecnica.

Grazie, preferisco di gran lunga la prima spiegazione, nella seconda non mi ci metto nemmeno a provare a capire, non ci capisco un Acca. forse perche’ ho letto la prima(?)non so se e’ solo per quello.

Nella prima, in modo divertente, ci hai fatto capire come funzionano i server. Complimenti per la fantasia e per come ha saputo spiegarceli. Saluti Luciana

Di: Marino

Marino — Sun, 11 Nov 2007 10:19:44 +0000

Alla riga comando 70 leggo:

heartbeat[4745]: 2007/10/12_23:30:57 info: glib: Starting serial heartbeat on tty /dev/ttyUSB0 (19200 baud)

ma …. baud si riferisce a pippo baudo?!?!?!??

Marino

Di: Eunice

Eunice — Fri, 09 Nov 2007 22:33:14 +0000

Attento, potremmo staccare la doppia alimentazione!!
Hai notato come esci “nero” quando vai a farlo??

Di: Massimo Romanello

Massimo Romanello — Wed, 07 Nov 2007 21:46:27 +0000

Grazie mille Marino, anche io trovo che semplificare le cose e renderle umane sia una cosa molto importante, grazie per il compimento.
Volevo anche rispondere a Giampiero, ma l’unico modo che avrei di spiegare la stessa cosa in maniera tecnica è la seguente, e onestamente se volete io mi metto anche a spiegarla ….. ma non so quanto utile possa essere hehe
Giampiero che dici ti basta il dettaglio tecnico seguente

heartbeat[5268]: 2007/10/12_00:18:40 info: Daily informational memory statistics
heartbeat[5268]: 2007/10/12_00:18:40 info: MSG stats: 4/580568 ms age 0 [pid5268/MST_CONTROL]
heartbeat[5268]: 2007/10/12_00:18:40 info: ha_malloc stats: 603/18940085 120852/59487 [pid5268/MST_CONTROL]
heartbeat[5268]: 2007/10/12_00:18:40 info: RealMalloc stats: 447624 total malloc bytes. pid [5268/MST_CONTROL]
heartbeat[5268]: 2007/10/12_00:18:40 info: Current arena value: 0
heartbeat[5268]: 2007/10/12_00:18:40 info: MSG stats: 0/6 ms age 259279830 [pid5270/HBFIFO]
heartbeat[5268]: 2007/10/12_00:18:40 info: ha_malloc stats: 425/574 52316/24957 [pid5270/HBFIFO]
heartbeat[5268]: 2007/10/12_00:18:40 info: RealMalloc stats: 54888 total malloc bytes. pid [5270/HBFIFO]
heartbeat[5268]: 2007/10/12_00:18:40 info: Current arena value: 0
heartbeat[5268]: 2007/10/12_00:18:40 info: MSG stats: 0/0 ms age 44161223120 [pid5271/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: ha_malloc stats: 427/153329 52692/25221 [pid5271/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: RealMalloc stats: 61280 total malloc bytes. pid [5271/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: Current arena value: 0
heartbeat[5268]: 2007/10/12_00:18:40 info: MSG stats: 0/0 ms age 44161223120 [pid5272/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: ha_malloc stats: 428/290711 52784/25285 [pid5272/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: RealMalloc stats: 53700 total malloc bytes. pid [5272/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: Current arena value: 0
heartbeat[5268]: 2007/10/12_00:18:40 info: MSG stats: 0/0 ms age 44161223120 [pid5273/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: ha_malloc stats: 429/153341 52876/25349 [pid5273/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: RealMalloc stats: 61464 total malloc bytes. pid [5273/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: Current arena value: 0
heartbeat[5268]: 2007/10/12_00:18:40 info: MSG stats: 0/0 ms age 44161223120 [pid5274/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: ha_malloc stats: 430/290719 52968/25413 [pid5274/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: RealMalloc stats: 53884 total malloc bytes. pid [5274/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: Current arena value: 0
heartbeat[5268]: 2007/10/12_00:18:40 info: MSG stats: 0/0 ms age 44161223120 [pid5275/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: ha_malloc stats: 431/153345 53060/25477 [pid5275/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: RealMalloc stats: 61924 total malloc bytes. pid [5275/HBWRITE]
heartbeat[5268]: 2007/10/12_00:18:40 info: Current arena value: 0
heartbeat[5268]: 2007/10/12_00:18:40 info: MSG stats: 0/0 ms age 44161223120 [pid5276/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: ha_malloc stats: 432/290721 53152/25541 [pid5276/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: RealMalloc stats: 54068 total malloc bytes. pid [5276/HBREAD]
heartbeat[5268]: 2007/10/12_00:18:40 info: Current arena value: 0
heartbeat[5268]: 2007/10/12_00:18:40 info: These are nothing to worry about.
heartbeat[4744]: 2007/10/12_23:30:57 WARN: Core dumps could be lost if multiple dumps occur
heartbeat[4744]: 2007/10/12_23:30:57 WARN: Consider setting /proc/sys/kernel/core_uses_pid (or equivalent) to 1 for maximum supportability
heartbeat[4744]: 2007/10/12_23:30:57 WARN: Logging daemon is disabled –enabling logging daemon is recommended
heartbeat[4744]: 2007/10/12_23:30:57 info: **************************
heartbeat[4744]: 2007/10/12_23:30:57 info: Configuration validated. Starting heartbeat 2.0.7
heartbeat[4745]: 2007/10/12_23:30:57 info: heartbeat: version 2.0.7
heartbeat[4745]: 2007/10/12_23:30:57 info: Heartbeat generation: 61
heartbeat[4745]: 2007/10/12_23:30:57 info: G_main_add_TriggerHandler: Added signal manual handler
heartbeat[4745]: 2007/10/12_23:30:57 info: G_main_add_TriggerHandler: Added signal manual handler
heartbeat[4745]: 2007/10/12_23:30:57 info: Removing /var/run/heartbeat/rsctmp failed, recreating.
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: ucast: write socket priority set to IPTOS_LOWDELAY on eth_int
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: ucast: bound send socket to device: eth_int
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: ucast: bound receive socket to device: eth_int
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: ucast: started on port 694 interface eth_int to 172.19.0.1
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: ucast: write socket priority set to IPTOS_LOWDELAY on eth_ext
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: ucast: bound send socket to device: eth_ext
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: ucast: bound receive socket to device: eth_ext
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: ucast: started on port 694 interface eth_ext to 89.251.180.1
heartbeat[4745]: 2007/10/12_23:30:57 info: glib: Starting serial heartbeat on tty /dev/ttyUSB0 (19200 baud)
heartbeat[4745]: 2007/10/12_23:30:57 info: G_main_add_SignalHandler: Added signal handler for signal 17
heartbeat[4745]: 2007/10/12_23:30:57 info: Local status now set to: ‘up’
heartbeat[4745]: 2007/10/12_23:31:01 info: Link ra:eth_int up.
heartbeat[4745]: 2007/10/12_23:31:01 info: Status update for node ra: status active
heartbeat[4745]: 2007/10/12_23:31:01 info: Link ra:eth_ext up.
heartbeat[4745]: 2007/10/12_23:31:01 info: Link ra:/dev/ttyUSB0 up.
harc[4755]: 2007/10/12_23:31:01 info: Running /etc/ha.d/rc.d/status status
heartbeat[4745]: 2007/10/12_23:31:02 info: Comm_now_up(): updating status to active
heartbeat[4745]: 2007/10/12_23:31:02 info: Local status now set to: ‘active’
heartbeat[4745]: 2007/10/12_23:31:02 info: remote resource transition completed.
heartbeat[4745]: 2007/10/12_23:31:02 info: remote resource transition completed.
heartbeat[4745]: 2007/10/12_23:31:02 info: Local Resource acquisition completed. (none)
heartbeat[4745]: 2007/10/12_23:31:03 info: ra wants to go standby [foreign]
heartbeat[4745]: 2007/10/12_23:32:07 info: standby: acquire [foreign] resources from ra
heartbeat[4790]: 2007/10/12_23:32:07 info: acquire local HA resources (standby).
ResourceManager[4800]: 2007/10/12_23:32:08 info: Acquiring resource group: maat takeoverdisks::maat::tefnut-vm::tefnut-sda::hu-vm::hu-sda Filesystem::/dev/m
apper/maat_part1::/cluster/maat::reiserfs::acl,user_xattr IPaddr2::172.19.1.132/24/br_evo IPaddr2::89.251.180.4/28/eth_ext vm::tefnut IPaddr2::172.19.2.133/2
4/br_tway IPaddr2::89.251.180.5/28/eth_ext vm::hu
takeoverdisks[4824]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: checking ( maat tefnut-vm tefnut-sda hu-vm hu-sda )
takeoverdisks[4824]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: no disk found
ResourceManager[4800]: 2007/10/12_23:32:08 info: Running /etc/ha.d/resource.d/takeoverdisks maat tefnut-vm tefnut-sda hu-vm hu-sda start
takeoverdisks[4864]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: starting ( maat tefnut-vm tefnut-sda hu-vm hu-sda )
takeoverdisks[4864]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: acquiring maat
takeoverdisks[4864]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: acquiring tefnut-vm
takeoverdisks[4864]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: acquiring tefnut-sda
takeoverdisks[4864]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: acquiring hu-vm
takeoverdisks[4864]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: acquiring hu-sda
takeoverdisks[4864]: 2007/10/12_23:32:08 info: /etc/ha.d/resource.d/takeoverdisks: san_disks_takeover maat tefnut-vm tefnut-sda hu-vm hu-sda
Filesystem[5439]: 2007/10/12_23:32:31 INFO: Resource is stopped
ResourceManager[4800]: 2007/10/12_23:32:31 info: Running /etc/ha.d/resource.d/Filesystem /dev/mapper/maat_part1 /cluster/maat reiserfs acl,user_xattr start
Filesystem[5501]: 2007/10/12_23:32:31 INFO: Running start for /dev/mapper/maat_part1 on /cluster/maat
Filesystem[5483]: 2007/10/12_23:32:43 INFO: Success
IPaddr2[5661]: 2007/10/12_23:32:43 INFO: Resource is stopped
ResourceManager[4800]: 2007/10/12_23:32:43 info: Running /etc/ha.d/resource.d/IPaddr2 172.19.1.132/24/br_evo start
IPaddr2[5753]: 2007/10/12_23:32:43 INFO: /sbin/ip -f inet addr add 172.19.1.132/24 brd 172.19.1.255 dev br_evo
IPaddr2[5753]: 2007/10/12_23:32:43 INFO: /sbin/ip link set br_evo up
IPaddr2[5753]: 2007/10/12_23:32:43 INFO: /usr/lib64/heartbeat/send_arp -i 200 -r 5 -p /var/run/heartbeat/rsctmp/send_arp/send_arp-172.19.1.132 br_evo 172.19
.1.132 auto 172.19.1.132 ffffffffffff
IPaddr2[5732]: 2007/10/12_23:32:43 INFO: Success
IPaddr2[5823]: 2007/10/12_23:32:43 INFO: Resource is stopped
ResourceManager[4800]: 2007/10/12_23:32:43 info: Running /etc/ha.d/resource.d/IPaddr2 89.251.180.4/28/eth_ext start
IPaddr2[5915]: 2007/10/12_23:32:43 INFO: /sbin/ip -f inet addr add 89.251.180.4/28 brd 89.251.180.15 dev eth_ext
IPaddr2[5915]: 2007/10/12_23:32:43 INFO: /sbin/ip link set eth_ext up
IPaddr2[5915]: 2007/10/12_23:32:43 INFO: /usr/lib64/heartbeat/send_arp -i 200 -r 5 -p /var/run/heartbeat/rsctmp/send_arp/send_arp-89.251.180.4 eth_ext 89.25
1.180.4 auto 89.251.180.4 ffffffffffff
IPaddr2[5894]: 2007/10/12_23:32:43 INFO: Success
ResourceManager[4800]: 2007/10/12_23:32:44 info: Running /etc/ha.d/resource.d/vm tefnut start
vm[6015]: 2007/10/12_23:32:44 info: /etc/ha.d/resource.d/vm: starting tefnut
IPaddr2[6229]: 2007/10/12_23:33:21 INFO: Resource is stopped
ResourceManager[4800]: 2007/10/12_23:33:21 info: Running /etc/ha.d/resource.d/IPaddr2 172.19.2.133/24/br_tway start
IPaddr2[6321]: 2007/10/12_23:33:21 INFO: /sbin/ip -f inet addr add 172.19.2.133/24 brd 172.19.2.255 dev br_tway
IPaddr2[6321]: 2007/10/12_23:33:21 INFO: /sbin/ip link set br_tway up
IPaddr2[6321]: 2007/10/12_23:33:21 INFO: /usr/lib64/heartbeat/send_arp -i 200 -r 5 -p /var/run/heartbeat/rsctmp/send_arp/send_arp-172.19.2.133 br_tway 172.1
9.2.133 auto 172.19.2.133 ffffffffffff
IPaddr2[6300]: 2007/10/12_23:33:21 INFO: Success
IPaddr2[6392]: 2007/10/12_23:33:21 INFO: Resource is stopped
ResourceManager[4800]: 2007/10/12_23:33:21 info: Running /etc/ha.d/resource.d/IPaddr2 89.251.180.5/28/eth_ext start
IPaddr2[6484]: 2007/10/12_23:33:21 INFO: /sbin/ip -f inet addr add 89.251.180.5/28 brd 89.251.180.15 dev eth_ext
IPaddr2[6484]: 2007/10/12_23:33:21 INFO: /sbin/ip link set eth_ext up
IPaddr2[6484]: 2007/10/12_23:33:21 INFO: /usr/lib64/heartbeat/send_arp -i 200 -r 5 -p /var/run/heartbeat/rsctmp/send_arp/send_arp-89.251.180.5 eth_ext 89.25
1.180.5 auto 89.251.180.5 ffffffffffff
IPaddr2[6463]: 2007/10/12_23:33:21 INFO: Success
ResourceManager[4800]: 2007/10/12_23:33:21 info: Running /etc/ha.d/resource.d/vm hu start
vm[6585]: 2007/10/12_23:33:21 info: /etc/ha.d/resource.d/vm: starting hu
heartbeat[4790]: 2007/10/12_23:33:30 info: local HA resource acquisition completed (standby).
heartbeat[4745]: 2007/10/12_23:33:30 info: Standby resource acquisition done [foreign].
heartbeat[4745]: 2007/10/12_23:33:30 info: Initial resource acquisition complete (auto_failback)
heartbeat[4745]: 2007/10/12_23:33:30 info: remote resource transition completed.
heartbeat[4745]: 2007/10/13_23:30:58 info: Daily informational memory statistics
heartbeat[4745]: 2007/10/13_23:30:58 info: MSG stats: 6/41528 ms age 0 [pid4745/MST_CONTROL]

Di: Marino

Marino — Wed, 07 Nov 2007 21:38:45 +0000

Io sono per l’umanizzazione delle cose inanimate, spesso mi capita di parlare con il Pc come se mi aspettassi una risposta, ovviamente non faccio come Michelangelo mentre scolpiva “La Pieta’ ” che getto’ il martello alla statua esclamando “perche’ non rispondi!!!” ma ci vado molto vicino.

Che dire Massimo, hai trovato un modo fantastico per umanizzare i nostri server, continua cosi’.

Marino

Di: Eunice

Eunice — Tue, 06 Nov 2007 12:49:37 +0000

RAID è vero; il bello è quando IBM ti invia per corriere i sostitutivi - da nn credere! anche un ragioniere diventa un super tecnico!!
I vs. nomi nn sono troppo facili.... Solo per confrontare le esperienze, abbiamo anche Eugenio e Povero Fabbro.
Potevate anche chiamarli più familiarmente: Caraibi, Orient Express (quello della posta), Caiman (quello x transazioni bancarie), Siberia (nn dico cosa!) e così via...
Ciao ciao

Di: Massimo Romanello

Massimo Romanello — Tue, 06 Nov 2007 10:16:56 +0000

Certo la soluzione di rodondanza tra dischi è la più semplice si chiama RAID e ce ne sono di vari tipi quella la fanno i controller direttamente e di difficile c’è poco
Anche il centralino ovviamente essendo un serverino si può ridondare.
Salutami Poldo, Olivia e alice

P.s. i nomi dei nostri server sono
Ipervisore 1 = Maat
Ipervisore 2 = Ra

Server = Shu, tefnut, hu

belli i nomi vero? Tutto merito del nostro Sistemista Massimiliano

Di: luca

luca — Mon, 05 Nov 2007 23:30:44 +0000

Che figata!

Commenti a: La PNL tra server ridondanti

Di: Luciana

Di: Marino

Di: Eunice

Di: Massimo Romanello

Di: Marino

Di: Eunice

Di: Massimo Romanello

Di: luca