diff options
Diffstat (limited to 'scalability/README')
| -rw-r--r-- | scalability/README | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/scalability/README b/scalability/README new file mode 100644 index 0000000..2828682 --- /dev/null +++ b/scalability/README @@ -0,0 +1,40 @@ +Clustered mode iozone setup: +---------------------------- +Before continuing reading, please make sure the iozone version is greater +than 3.394 to run iozone in clustered mode. + +Iozone needs either passwordless rsh or passwordless ssh to be setup to run in +clustered mode. +By default, iozone uses rsh. To force iozone to use ssh, the shell variable RSH +needs to be set to 'ssh'. The command line listed earlier uses this feature. + +Contents of the iconf file used [ iozone cluster mode configuration file]: +fusion1 /mnt/fioperf /usr/bin/iozone +fusion1 /mnt/fioperf /usr/bin/iozone +fusion2 /mnt/fioperf /usr/bin/iozone +fusion2 /mnt/fioperf /usr/bin/iozone +fusion3 /mnt/fioperf /usr/bin/iozone +fusion3 /mnt/fioperf /usr/bin/iozone +fusion4 /mnt/fioperf /usr/bin/iozone +fusion4 /mnt/fioperf /usr/bin/iozone +fusion5 /mnt/fioperf /usr/bin/iozone +fusion5 /mnt/fioperf /usr/bin/iozone + +[Note that each entry is repeated twice so that two child processes +could be run on each system.] + +Pitfalls: + +1.When the config file uses IP addresses instead of hostnames, +iozone fails to proceed. For a successful iozone run in clustered mode, +one needs to populate the config file with hostnames. +For name resolution, one could use /etc/hosts. + +2.Even after successfully configuring passwordless rsh/ssh, +if you are unable to run iozone, make sure you flush firewall rules + +To look at the configured firewall rules, one could use: +# iptables -L + +To flush the rules, once could use: +# iptables -F
\ No newline at end of file |