On Fri, Sep 23, 2011 at 3:43 PM, Tatsuo Ishii <is...@sraoss.co.jp> wrote: >>> Ok. I think this is the cause of the problem: >>> >>>> 2011-09-21 16:23:11 LOG: pid 23588: find_primary_node: >>>> pgpool_walrecrunning does not exist >>> >>> I think you did not install pgpool_walrecrunning() on DB node 2. In >>> this case find_primary_node() returns -1 and it is stored in >>> >>> Req_info->primary_node_id = find_primary_node(); >>> >>> It is used as the parameter for TSTAE macro, which actually accesses >>> out of array because of -1. >>> >>> 1250 state = TSTATE(backend, >>> >>> So the solution would be installing pgpool_walrecrunning() on DB node 2. >> >> Thanks for looking at this. I'm admittedly rather confused. Where is >> pgpool_walrerunning() documented? I looked through the official >> documentation ( >> http://pgpool.projects.postgresql.org/pgpool-II/doc/pgpool-en.html ) >> and don't see any references. I also checked the official tutorial ( >> http://pgpool.projects.postgresql.org/pgpool-II/doc/tutorial-en.html ) >> and didn't see any references. > > The documents in the URL above is for the latest stable release of > pgpool-II 3.1 and the version does not require installing the function > anymore. > > Version specific docs are coming with under doc/ directory in the > source code.
Ah, ok thanks. I'm not sure how I missed this when I setup pgpool over a month ago. > >> After googling it sounds like I need to run >> /usr/share/pgpool-II/sql/walrecrunning/pgpool-walrecrunning.sql >> against the postgres database (on the master, at which point it will >> automatically replicate to the standby's)? >> That seems to work fine: >> $ psql -h cuda-db2 -U postgres -d postgres -f pgpool-walrecrunning.sql >> CREATE FUNCTION >> $ psql -h cuda-db2 -U postgres -d postgres -c "select >> pgpool_walrecrunning();" >> pgpool_walrecrunning >> ---------------------- >> f >> (1 row) >> >> Trying to install it on either of the standby servers fails >> (expectedly, since they're readonly): >> $ psql -h cuda-db0 -U postgres -d postgres -f pgpool-walrecrunning.sql >> psql:pgpool-walrecrunning.sql:4: ERROR: cannot execute CREATE >> FUNCTION in a read-only transaction >> $ psql -h cuda-db0 -U postgres -d postgres -c "select >> pgpool_walrecrunning();" >> ERROR: could not access file "$libdir/pgpool-walrecrunning": No such >> file or directory >> >> I restarted pgpool, after running the above. Please let me know if I >> need to do anything else to resolve this. > > It seems cuda-db0 lacks pgpool-walrecrunning.so. Have you ever installed it? Nope, I hadn't. I've done that now. Does this require a restart of pgpool or postgresql to take effect, or is simply installing it (with 'make install + running the sql script for each DB on the master) sufficient? _______________________________________________ Pgpool-general mailing list Pgpool-general@pgfoundry.org http://pgfoundry.org/mailman/listinfo/pgpool-general
