Skytools安装配置管理（六）
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子节点接管root节点，如下： [postgres@londiste1 londiste3]$ londiste3 db2.ini takeover node1 2013-09-21 10:22:13,158 25616 INFO old: node1 2013-09-21 10:22:22,224 25616 INFO Consumer 'londiste_db1' on node 'node1' paused 2013-09-21 10:22:23,260 25616 INFO [node2] Consumer londiste_db2 tagged as paused 2013-09-21 10:22:24,273 25616 INFO Consumer 'londiste_db2' on node 'node2' paused 2013-09-21 10:22:25,338 25616 INFO Consumer 'londiste_db2' on node 'node2' resumed 2013-09-21 10:22:26,363 25616 INFO Consumer 'londiste_db1' on node 'node1' resumed [postgres@londiste1 londiste3]$ londiste3 db1.ini status Queue: replika Local node: node1 node2 (root) | Tables:1/0/0 | Lag:8s,Tick: 463 +--:node4 (branch) +--:node1 (branch) +--:node3 (branch) +--:node5 (branch) Tables:1/0/0 Lag:8s,SimSun;font-size:14px;vertical-align:baseline;">{此时，接管节点成为root节点，远root节点变为node2的子节点，且原来与node2同级的节点也变为node2的子节点} 3.2、walmgr3常用命令【2.5节中包括的此处不再累赘说明】 3.2.1 MASTER COMMANDS1.列举当前备份命令(listbackups)： [postgres@db1 pg93]$ walmgr3 wal-master.ini listbackups 2.对wal进行一次手动同步命令(sync)： [postgres@db1 pg93]$ walmgr3 wal-master.ini sync 2013-12-23 21:44:32,280 22317 INFO 000000030000000000000030.00000028.backup: last complete 2013-12-23 21:44:33,310 22317 INFO Syncing /opt/pg93/data/pg_xlog/000000030000000000000033 2013-12-23 21:44:34,595 22317 INFO Syncing /opt/pg93/data/pg_xlog/000000030000000000000035 2013-12-23 21:44:35,057 22317 INFO Partial copy done 3.启动定时同步命令(syncdaemon)： 【同步间隔时间为配置文件中loop_delay参数指定】 [postgres@db1 pg93]$ walmgr3 wal-master.ini syncdaemon 2013-12-23 21:54:12,574 22473 INFO 000000030000000000000033: last complete 2013-12-23 21:54:13,148 22473 INFO Syncing /opt/pg93/data/pg_xlog/000000030000000000000036 2013-12-23 21:54:23,990 22473 INFO 000000030000000000000033: last complete 2013-12-23 21:54:24,155 22473 INFO Syncing /opt/pg93/data/pg_xlog/000000030000000000000035 4.取消archive配置命令(stop)： 【执行后archive_command参数配置将取消】 [postgres@db1 pg93]$ walmgr3 wal-master.ini stop 2013-12-23 21:57:25,488 22524 INFO Disabling WAL archiving 5.自定义定期任务命令(periodic)： [postgres@db1 pg93]$ walmgr3 wal-master.ini periodic 该命令仅在配置文件中制定了定期执行命令（periodic_command）时有效。可以指定任何脚本，如同步、配置文件、系统定时任务crontab脚本等。 3.2.2 SLAVE COMMANDS[postgres@db2pg93]$ walmgr3 wal-slave.ini listbackups List of backups: Backup set Timestamp Label First WAL --------------- ------------------------ ----------- ------------------------ data.master 2013-12-23 21:45:30 EST FullBackup 000000030000000000000032 2.暂停wal重放命令(pause)： [postgres@db2pg93]$ walmgr3 wal-slave.ini pause 2013-12-23 22:14:47,210 4139 INFO Pausing recovery mode 3.继续wal重放命令(continue)： [postgres@db2pg93]$ walmgr3 wal-slave.ini continue 2013-12-23 22:15:21,740 4149 INFO Continuing with recovery 4. 停止恢复模式命令(boot)： 【slave将变为可读写模式】 [postgres@db2pg93]$ walmgr3 wal-slave.ini boot 2013-12-23 22:17:27,412 4164 INFO Stopping recovery mode 5.创建一个slave节点(createslave)： 【该命令使子节点的创建过程更加简单】 [postgres@db2pg93]$ walmgr3 wal-slave.ini createslave 2013-12-23 22:21:20,2164306 INFO Backup lock obtained. 2013-12-23 22:21:22,772 4306 INFO pg_basebackup finished successfully server starting LOG: database system was interrupted; last known up at 2013-12-23 22:21:20 EST LOG: creating missing WAL directory "pg_xlog/archive_status" LOG: entering standby mode 2013-12-23 22:21:23,149 4358 INFO 00000003.history: Found LOG: restored log file "00000003.history" from archive LOG: restored log file "000000030000000000000036" from archive LOG: redo starts at 0/36000028 LOG: consistent recovery state reached at 0/360000F0 LOG: database system is ready to accept read only connections LOG: started streaming WAL from primary at 0/37000000 on timeline 3 2013-12-23 22:21:27,845 4306 INFO pg_receivelog stopped 2013-12-23 22:21:27,846 4306 INFO Streaming replication standby created successfully 四、参考文献http://pgfoundry.org/projects/skytools/ http://skytools.projects.pgfoundry.org/skytools-3.0/ http://skytools.projects.pgfoundry.org/skytools-3.0/doc/skytools3.html http://wiki.postgresql.org/wiki/Skytools#Documentation_3 http://wiki.postgresql.org/wiki/Londiste_Tutorial 五、错误解决5.1、ImportError错误现象： [pg90@localhostconf]$ londiste3 part1.ini create-root part1_root dbname=part1 Traceback (most recent call last): File"/opt/skytools/bin/londiste3",line 8,in <module> importpkgloader ImportError: No module named pkgloader 解决办法： [root@localhostskytools-3.1.5]# python setup_pkgloader.py build [root@localhostskytools-3.1.5]# python setup_pkgloader.py install [root@localhostskytools-3.1.5]# python setup_skytools.py build [root@localhostskytools-3.1.5]# python setup_skytools.py install 5.2、ProgrammingErrorProgrammingError: schema "partconf" does not exist 解决方法： 在root节点上也创建partconf模式： part_root=# CREATE SCHEMA partconf; CREATE SCHEMA part_root=# CREATE TABLE partconf.conf ( part_root(# part_nr integer, part_root(# max_part integer,SimSun;vertical-align:baseline;">part_root(# db_code bigint,SimSun;vertical-align:baseline;">part_root(# is_primary boolean,SimSun;vertical-align:baseline;">part_root(# max_slot integer,SimSun;vertical-align:baseline;">part_root(# cluster_name text part_root(# ); CREATE TABLE 5.3、hash_stringpart_root=# CREATE FUNCTION partconf.get_hash_raw part_root-# ( i_input integer) part_root-# RETURNS integer part_root-# LANGUAGE sql part_root-# AS $$ part_root$# -- used to wrap hashtext so that we can replace it in 8.4 part_root$# -- with older implementation to keep compatibility part_root$# select hash_string($1::text,'lookup2'); part_root$# $$; ERROR: function hash_string(text,unknown) does not exist LINE 8: select hash_string($1::text,SimSun;vertical-align:baseline;"> ^ HINT: No function matches the given name and argument types. You might need to add explicit type casts. 5.4、rst2html [postgres@localhostpghashlib-master]$ make install /bin/mkdir -p '/opt/pgsql/lib' /bin/mkdir -p '/opt/pgsql/share/contrib' /bin/mkdir -p '/opt/pgsql/share/doc/contrib' /bin/sh /opt/pgsql/lib/pgxs/src/makefiles/../../config/install-sh -c -m 755 hashlib.so '/opt/pgsql/lib/hashlib.so' rst2html README.rst > hashlib.html /bin/sh: rst2html: command not found make: *** [hashlib.html] Error 127 make: *** Deleting file `hashlib.html' 下载docutils并安装https://pypi.python.org/pypi/docutils [root@localhostdocutils-0.11]# python setup.py install [root@localhost~]# ln -s /opt/python25/bin/rst2html.py /usr/bin/rst2html 5.5、undefined symbol: le64toh[postgres@localhostextension]$ psql test < hashlib--1.0.sql ERROR: could not load library "/opt/pgsql/lib/hashlib.so": /opt/pgsql/lib/hashlib.so: undefined symbol: le64toh 换64位操作系统 5.6、找不到头文件 编译skytools报错，找不到相应头文件 [root@localhostskytools-3.1.5]# make …… make[3]: Entering directory `/root/skytools-3.1.5/sql/pgq/lowlevel' gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fpic -DHAVE_CONFIG_H -I. -I. -I/opt/pg93/include/server -I/opt/pg93/include/internal -D_GNU_SOURCE -c -o insert_event.o insert_event.c insert_event.c:19:22: error: postgres.h: No such file or directory insert_event.c:20:21: error: funcapi.h: No such file or directory insert_event.c:22:29: error: catalog/pg_type.h: No such file or directory insert_event.c:23:30: error: commands/trigger.h: No such file or directory insert_event.c:24:26: error: executor/spi.h: No such file or directory insert_event.c:25:28: error: lib/stringinfo.h: No such file or directory insert_event.c:26:28: error: utils/builtins.h: No such file or directory insert_event.c:27:28: error: utils/datetime.h: No such file or directory insert_event.c:28:27: error: utils/hsearch.h: No such file or directory insert_event.c:29:25: error: access/xact.h: No such file or directory 错误原因： 9.3中头文件路径发生了变化（/opt/pg93/include/postgresql/server），但skytools还是按照之前版本的路径查找（/opt/pg93/include/server） 将server拷贝至include下 5.7、Python.h ./psycopg/psycopg.h:30:20: error: Python.h: No such file or directory 缺少Python.h头文件 [root@db1 psycopg2-2.5.1]# find / -name Python.h [root@db1 psycopg2-2.5.1]# yum install python-devel /usr/include/python2.6/Python.h （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |