Postgresql 使用pg_upgrade升级(9.4.4~9.5.2)

建立新版本数据库目录并修改目录owner

#mkdir -p /opt/pgsql9.5.2

#mkdir -p /opt/pgdata9.5.2/pg_root

#chown -R postgres:postgres /opt/pgsql9.5.2

#chown -R postgres:postgres /opt/pgdata9.5.2/pg_root/

解压源码包并安装新版本数据库，注意目录，要新建目录

#tar -zxvf postgresql-9.5.2.tar

#cd postgresql-9.5.2/

#./configure --prefix=/opt/pgsql9.5.2 --with-pgport=1922 --with-segsize=8 --with-wal-segsize=64 --with-wal-blocksize=64 --with-perl --with-python --with-openssl --with-pam --with-ldap --with-libxml --with-libxslt --enable-thread-safety

#gmake world

#gmake install-world

安装完成后，初始化数据库

$/opt/pgsql9.5.2/bin/initdb  -D /opt/pgdata9.5.2/pg_root/

利用pg_upgrade检查升级是否满足条件

$/opt/pgsql9.5.2/bin/pg_upgrade -c --link -b /opt/pgsql/bin -B /opt/pgsql9.5.2/bin -d /opt/pgdata/pg_root -D /opt/pgdata9.5.2/pg_root/

Consult the last few lines of "pg_upgrade_server.log" for

the probable cause of the failure.

Performing Consistency Checks on Old Live Server

------------------------------------------------

Checking cluster versions                                   ok

Checking database user is the install user                  ok

Checking database connection settings                       ok

Checking for prepared transactions                          ok

Checking for reg* system OID user data types                ok

Checking for contrib/isn with bigint-passing mismatch       ok

Checking for presence of required libraries                 ok

Checking database user is the install user                  ok

Checking for prepared transactions                          ok

*Clusters are compatible*

停老库

$pg_ctl stop -m fast

进行升级

$/opt/pgsql9.5.2/bin/pg_upgrade  --link -b /opt/pgsql/bin -B /opt/pgsql9.5.2/bin -d /opt/pgdata/pg_root -D /opt/pgdata9.5.2/pg_root/

Performing Consistency Checks

-----------------------------

Checking cluster versions                                   ok

Checking database user is the install user                  ok

Checking database connection settings                       ok

Checking for prepared transactions                          ok

Checking for reg* system OID user data types                ok

Checking for contrib/isn with bigint-passing mismatch       ok

Creating dump of global objects                             ok

Creating dump of database schemas

                                                            ok

Checking for presence of required libraries                 ok

Checking database user is the install user                  ok

Checking for prepared transactions                          ok

If pg_upgrade fails after this point, you must re-initdb the

new cluster before continuing.

Performing Upgrade

------------------

Analyzing all rows in the new cluster                       ok

Freezing all rows on the new cluster                        ok

Deleting files from new pg_clog                             ok

Copying old pg_clog to new server                           ok

Setting next transaction ID and epoch for new cluster       ok

Deleting files from new pg_multixact/offsets                ok

Copying old pg_multixact/offsets to new server              ok

Deleting files from new pg_multixact/members                ok

Copying old pg_multixact/members to new server              ok

Setting next multixact ID and offset for new cluster        ok

Resetting WAL archives                                      ok

Setting frozenxid and minmxid counters in new cluster       ok

Restoring global objects in the new cluster                 ok

Restoring database schemas in the new cluster

                                                            ok

Creating newly-required TOAST tables                        ok

Adding ".old" suffix to old global/pg_control               ok

If you want to start the old cluster, you will need to remove

the ".old" suffix from /opt/pgdata/pg_root/global/pg_control.old.

Because "link" mode was used, the old cluster cannot be safely

started once the new cluster has been started.

Linking user relation files

                                                            ok

Setting next OID for new cluster                            ok

Sync data directory to disk                                 ok

Creating script to analyze new cluster                      ok

Creating script to delete old cluster                       ok

Upgrade Complete

----------------

Optimizer statistics are not transferred by pg_upgrade so,

once you start the new server, consider running:

    ./analyze_new_cluster.sh

Running this script will delete the old cluster's data files:

    ./delete_old_cluster.sh

升级完成后，启动新版本数据库

 $/opt/pgsql9.5.2/bin/pg_ctl start -D /opt/pgdata9.5.2/pg_root/

server starting

psql 连接数据库查看一切正常

postgres=# select version();

                                                 version                                                  

----------------------------------------------------------------------------------------------------------

 PostgreSQL 9.5.2 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-16), 64-bit

对库做analyze生成新的统计信息

 $./analyze_new_cluster.sh 

This script will generate minimal optimizer statistics rapidly

so your system is usable, and then gather statistics twice more

with increasing accuracy.  When it is done, your system will

have the default level of optimizer statistics.

If you have used ALTER TABLE to modify the statistics target for

any tables, you might want to remove them and restore them after

running this script because they will delay fast statistics generation.

If you would like default statistics as quickly as possible, cancel

this script and run:

    "/opt/pgsql9.5.2/bin/vacuumdb" --all --analyze-only

vacuumdb: processing database "hank": Generating minimal optimizer statistics (1 target)

vacuumdb: processing database "local": Generating minimal optimizer statistics (1 target)

vacuumdb: processing database "postgres": Generating minimal optimizer statistics (1 target)

vacuumdb: processing database "remote": Generating minimal optimizer statistics (1 target)

vacuumdb: processing database "template1": Generating minimal optimizer statistics (1 target)

vacuumdb: processing database "hank": Generating medium optimizer statistics (10 targets)

vacuumdb: processing database "local": Generating medium optimizer statistics (10 targets)

vacuumdb: processing database "postgres": Generating medium optimizer statistics (10 targets)

vacuumdb: processing database "remote": Generating medium optimizer statistics (10 targets)

vacuumdb: processing database "template1": Generating medium optimizer statistics (10 targets)

vacuumdb: processing database "hank": Generating default (full) optimizer statistics

vacuumdb: processing database "local": Generating default (full) optimizer statistics

vacuumdb: processing database "postgres": Generating default (full) optimizer statistics

vacuumdb: processing database "remote": Generating default (full) optimizer statistics

vacuumdb: processing database "template1": Generating default (full) optimizer statistics

Done

删除老版本库的数据目录

$cat delete_old_cluster.sh

#!/bin/sh

rm -rf '/opt/pgdata/pg_root'

rm -rf '/data02/pgdata/tbs_hank/PG_9.4_201409291'

./delete_old_cluster.sh 

修改环境变量为新版本路径

PGHOME==/opt/pgsql9.5.2

PGDATA=/opt/pgdata9.5.2/pg_root