MacOSx homebrew postgresql issue note
12 September 2012
after brew install postgresql
then run "initdb /usr/local/var/postgres -E utf8", may got:
selecting default shared_buffers ... 400kBcreating configuration files ... okcreating template1 database in /usr/local/var/postgres/base/1 ... FATAL: could not create shared memory segment: Cannot allocate memoryDETAIL: Failed system call was shmget(key=1, size=2138112, 03600).HINT: This error usually means that PostgreSQL's request for a shared memory segment exceeded available memory or swap space, or exceeded your kernel's SHMALL parameter. You can either reduce the request size or reconfigure the kernel with larger SHMALL. To reduce the request size (currently 2138112 bytes), reduce PostgreSQL's shared memory usage, perhaps by reducing shared_buffers or max_connections.The PostgreSQL documentation contains more information about shared memory configuration.child process exited with exit code 1initdb: removing data directory "/usr/local/var/postgres"
~ sudo sysctl -w kern.sysv.shmall=1024000
kern.sysv.shmall: 8192 -> 1024000
~ initdb /usr/local/var/postgres -E utf8
then everything will move smoothly.
just for note.
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