Also this is postgresql Log(Debug1 level) . after i restart slave node this logs accours.
/var/lib/pgsql/11/data/log/postgresql-Fri.log
2019-03-22 12:17:57.869 +03 [31760] LOG: redo starts at 0/C000098
2019-03-22 12:17:57.869 +03 [31760] LOG: consistent recovery state reached at 0/C0000D0
2019-03-22 12:17:57.869 +03 [31760] LOG: invalid record length at 0/C0000D0: wanted 24, got 0
2019-03-22 12:17:57.870 +03 [31757] LOG: database system is ready to accept read only connections
2019-03-22 12:17:57.877 +03 [31764] LOG: started streaming WAL from primary at 0/C000000 on timeline 1
Ali Mumcu <alimumcu1077@xxxxxxxxx>, 22 Mar 2019 Cum, 12:07 tarihinde şunu yazdı:
Hello Friends,
I wanna to create Streaming Replication with 2 Node(1 Master, 1 Slave)
After i create streaming replication, streaming is okay , and than when i add new record on master , than on slave records occurs autamaticly.
but When i look service status on slave server i "see startup recovering 00000001000000000000000A"
[root@slave]# systemctl status postgresql-11
● postgresql-11.service - PostgreSQL 11 database server
Loaded: loaded (/usr/lib/systemd/system/postgresql-11.service; disabled; vendor preset: disabled)
Active: active (running) since Fri 2019-03-22 11:52:17 +03; 22s ago
Docs: https://www.postgresql.org/docs/11/static/
Process: 29349 ExecStartPre=/usr/pgsql-11/bin/postgresql-11-check-db-dir ${PGDATA} (code=exited, status=0/SUCCESS)
Main PID: 29355 (postmaster)
CGroup: /system.slice/postgresql-11.service
├─29355 /usr/pgsql-11/bin/postmaster -D /var/lib/pgsql/11/data/
├─29357 postgres: logger
├─29358 postgres: startup recovering 000000010000000000000008
├─29359 postgres: checkpointer
├─29360 postgres: background writer
├─29361 postgres: stats collector
└─29362 postgres: walreceiver streaming 0/A0000D0
when on master create new wal_file(like 000000010000000000000009) and then on slave this is updating on slave like "startup recovering 000000010000000000000009 "Is that a problem or not i dont know?Master And Slave Postgresql.conf filelisten_addresses = '*'
wal_level = replica
synchronous_commit = on
max_wal_senders = 10
wal_keep_segments = 64
hot_standby = on
hot_standby_feedback = onSlave Recovery.conf filestandby_mode = on
primary_conninfo = 'host=master_ip user=user password=password
application_name=slave'recovery_target_timeline = 'latest'Also i trace postgresql process on slave Node . This is results[root@slave os1077]# strace -p 29358strace: Process 29358 attachedepoll_wait(4, [], 1, 639) = 0close(4) = 0read(7, 0x7ffe72a52007, 1) = -1 EAGAIN (Resource temporarily unavailable)epoll_create1(EPOLL_CLOEXEC) = 4epoll_ctl(4, EPOLL_CTL_ADD, 11, {EPOLLIN|EPOLLERR|EPOLLHUP, {u32=34908528, u64=34908528}}) = 0epoll_ctl(4, EPOLL_CTL_ADD, 7, {EPOLLIN|EPOLLERR|EPOLLHUP, {u32=34908552, u64=34908552}}) = 0epoll_wait(4, strace: Process 29358 detached<detached ...>
ALİ MUMCU
İSTANBUL ÜNİVERSİTESİ
BİLGİ İŞLEM DAİRE BAŞKANLIĞI
Dahili:11210