安装概要
环境centos 7.4/5/6 x86_64，源码安装,安装过程没啥好说的，主要是配置服务器的参数；既然是服务器，咱还是要严谨点，再说linux COPY 速度也很快，体力活；
1 软件包安装
yum install net-tools -y yum install sysstat -y yum install iotop libXp redhat-lsb gcc gdb –y yum install xorg-x11-xauth -y yum install -y vim lrzsz tree wget gcc gcc-c++ readline-devel hwloc smartmontools --db yum install -y readline readline-devel openssl openssl-devel zlib zlib-devel numactl
2 启用大页
启用大页:
DB:
/etc/default/grub net.ifnames=0 biosdevname=0 default_hugepagesz=2M hugepagesz=2M hugepages=81920 transparent_hugepage=never
执行生效命令
grub2-mkconfig -o /boot/grub2/grub.cfg
修改大页数量,不用重启生效:
sysctl -w vm.nr_hugepages=81920
复查:
cat /proc/cmdline cat /sys/kernel/mm/transparent_hugepage/enabled [root@kbj-db-1 ~]# grep -i hugepage /proc/meminfo AnonHugePages: 0 kB HugePages_Total: 81920 HugePages_Free: 44703 HugePages_Rsvd: 43036 HugePages_Surp: 0 Hugepagesize: 2048 kB
3 更改内核参数
net.core.rmem_default = 262144 net.core.rmem_max = 4194304 net.core.wmem_default = 262144 net.core.wmem_max = 1048576 fs.aio-max-nr = 1048576 fs.file-max = 6815744 fs.aio-max-nr = 1048576 kernel.panic_on_oops=1 net.core.somaxconn = 8192 net.ipv4.tcp_keepalive_time = 600 #默认7200 net.ipv4.ip_local_port_range = 10000 65000 #默认32768到61000 net.ipv4.tcp_max_syn_backlog = 8192 #默认1024 net.ipv4.tcp_max_tw_buckets = 5000 #默认65535 #vm.nr_hugepages = 81920 #Db 启用81920*2M的大页 kernel.sem = 4096 128000 64 512 vm.swapniess=10
4更改用户限制
vi /etc/security/limits.conf postgres soft nproc 16384 postgres hard nproc 16384 postgres soft nofile 65536 postgres hard nofile 65536
5修改环境变量(HISTORY)
vi /etc/profile
export.UTF8
export HISTTIMEFORMAT="%F %T "
export HISTSIZE=12000
ulimit -SHn 65536
6更改数据库服务器磁盘IO算法
磁盘的IO调度算法,根据实际情况调整,推荐cfq/noop
echo noop>/sys/block/sdb/queue/scheduler cat /sys/block/sdb/queue/scheduler [noop] deadline cfq [root@kbj-db-1 ssd]# time dd if=/dev/zero of=/ssd/test.dmp bs=8192 count=12800000 ^C记录了4873412+0 的读入 记录了4873412+0 的写出 39922991104字节(40 GB)已复制，35.9298 秒，1.1 GB/秒
7配置用户及目录
groupadd -g 106 ssl-cert groupadd -g 107 postgres useradd -g postgres -G ssl-cert -u 104 postgres chown postgres:postgres -R /ssd su - postgres [postgres@kbj-db-1 ssd]$ mkdir /ssd/database/ [postgres@kbj-db-1 ssd]$ mkdir /ssd/database/pg114data [postgres@kbj-db-1 ssd]$ mkdir /ssd/database/114arch [postgres@kbj-db-1 ssd]$ mkdir /ssd/database/pg114home
8设置postgresql环境变量
export PGDATA=/ssd/database/pg114data export PGARCH=/ssd/database/114arch export PGHOME=/ssd/database/pg114home export LD_LIBRARY_PATH=/ssd/database/pg114home/lib export PATH=$PGHOME/bin:$PATH PATH=$PATH:$HOME/.local/bin:$HOME/bin
9安装
./configure根据实际情况选择
tar -xzvf postgresql-11.4.tar.gz cd postgresql-11.4/ ./configure --prefix=/ssd/database/pg114home --with-python --with-ossp-uuid --with-libxml --with-openssl --enable-dtrace --enable-debug cd /ssd/postgresql-11.4/contrib/ make make install /ssd/postgresql-11.4/contrib/file_fdw cd $PGHOME/bin/ ./initdb -D $PGDATA #连接数据库 psql -p5432 -Upostgres -d postgres #安装插件 create extension pg_buffercache ; create extension pg_stat_statements; CREATE EXTENSION file_fdw; create extension pgrowlocks; CREATE SERVER file_fdw_server FOREIGN DATA WRAPPER file_fdw; select current_database(),* from pg_extension select * from pg_available_extensions where name like '%uuid%'; --扩展插件检查 select * from pg_available_extensions where name in ( 'fuzzystrmatch','pg_visibility','tablefunc','amcheck','intarray','tsm_system_time','pgrowlocks','tcn','dict_int','unaccent','btree_gin','dict_xsyn','intagg','insert_username','dblink','lo','uuid-ossp','adminpack','bloom','postgres_fdw','pageinspect','pg_freespacemap','pg_prewarm','pgcrypto','pg_buffercache','file_fdw','btree_gist','xml2','citext','pg_stat_statements','refint','pgstattuple','timetravel','hstore','moddatetime','isn','cube','autoinc','pg_trgm','ltree','plpgsql','seg','tsm_system_rows','earthdistance')
10 更改日志文件默认配置
1 #启用DDL记录
log_statement=ddl
2日志保留91天,
log_line_prefix = '%m %p %u %d %r %a ' log_rotation_age = 91d log_rotation_size = 20MB log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
3 启用文件权限,供EFK使用
log_file_mode=0604
4 启用长时SQL记录
auto_explain.log_min_duration=10000 archive_mode = on archive_command = 'cp %p /home/postgres/arch/%f' wal_level =replica