[pgpool-general: 2802] PgPool SSL problems: library refuses to load, even though enabled

Rick Morris rmorris at kss-inc.com
Fri May 2 05:12:30 JST 2014

Hi All,

I can't get PgPool to support SSL connections, even though I follow the
documented steps perfectly.

Scenario: 2 PostgreSQL servers with streaming replication (primary ->
standby), PgPool in load-balancing mode. Everything works fine with non-SSL

1. In the case of requiring SSL connections from the Postgres servers,
connection attempts just fail with "pool_do_auth: maybe protocol version
mismatch (current version 3)" while on the server side I see

"FATAL:  no pg_hba.conf entry for host "", user "postgres",
database "template1", SSL off"
(connection set to hostssl in pg_hba.conf).

2. In the case of enabling local SSL connections to PgPool, I configure
pgpool.conf with

ssl = true
ssl_key = '/etc/pgpool-II/server.key'
ssl_cert = '/etc/pgpool-II/server.crt'
(with self-signed cert, same as in the Postgres servers)

And when I connect locally to PgPool, the log shows

"pool_ssl: SSL requested but SSL support is not available"

And when I turn on debugging (set to 1 or 2 in pgpool.conf) I do not see
SSL mentioned in the reported config keys during startup.

System: Centos 6.5,

Installed binaries:
postgresql93.x86_64   9.3.4-1PGDG.rhel6 @pgdg93


Library check:
[root at server ~]# ldd /usr/bin/pgpool
linux-vdso.so.1 =>(0x00007fff32f1c000)
libpq.so.5 => /usr/pgsql-9.3/lib/libpq.so.5 (0x00007f2e121f0000)
libpcp.so.0 => /usr/lib64/libpcp.so.0 (0x0000003663c00000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003662800000)
libpam.so.0 => /lib64/libpam.so.0 (0x0000003667400000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x0000003664800000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x0000003664000000)
libnsl.so.1 => /lib64/libnsl.so.1 (0x0000003665400000)
libm.so.6 => /lib64/libm.so.6 (0x0000003663000000)
libc.so.6 => /lib64/libc.so.6 (0x0000003662400000)
libssl.so.10 => /usr/lib64/libssl.so.10 (0x0000003669400000)
libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x0000003668400000)
libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x0000003668000000)
libldap_r-2.4.so.2 => /lib64/libldap_r-2.4.so.2 (0x0000003665000000)
/lib64/ld-linux-x86-64.so.2 (0x0000003661c00000)
libaudit.so.1 => /lib64/libaudit.so.1 (0x0000003666400000)
libdl.so.2 => /lib64/libdl.so.2 (0x0000003662000000)
libfreebl3.so => /lib64/libfreebl3.so (0x0000003664c00000)
libkrb5.so.3 => /lib64/libkrb5.so.3 (0x0000003668c00000)
libcom_err.so.2 => /lib64/libcom_err.so.2 (0x0000003664400000)
libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x0000003669000000)
libz.so.1 => /lib64/libz.so.1 (0x0000003663400000)
libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x0000003668800000)
libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x0000003667c00000)
liblber-2.4.so.2 => /lib64/liblber-2.4.so.2 (0x0000003669c00000)
libssl3.so => /usr/lib64/libssl3.so (0x0000003667000000)
libsmime3.so => /usr/lib64/libsmime3.so (0x0000003667800000)
libnss3.so => /usr/lib64/libnss3.so (0x0000003665c00000)
libnssutil3.so => /usr/lib64/libnssutil3.so (0x0000003665800000)
libplds4.so => /lib64/libplds4.so (0x0000003666000000)
libplc4.so => /lib64/libplc4.so (0x0000003666800000)
libnspr4.so => /lib64/libnspr4.so (0x0000003666c00000)
libsasl2.so.2 => /usr/lib64/libsasl2.so.2 (0x0000003669800000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x0000003663800000)
librt.so.1 => /lib64/librt.so.1 (0x0000003662c00000)

PgPool master process
/usr/bin/pgpool -f /etc/pgpool-II/pgpool.conf -n

I am at a loss. Is there anything else I can look for to figure out why SSL
is not loading?


Rick Morris


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