$ sudo apt-get install postgresql-9.4Package postgresql-9.4 is not available, but is referred to by another package.that the package is missing, has been obsoleted, or is only available from another source
E: Package 'postgresql-9.4'
我试图在AWS上使用Postgres部署一个PostGIS集群,为此我有了下一个体系结构:1 GTM (172.31.45.190)2share/extension/postgis.control": No such file or directory
postgis.control文件由apt-get安装在:"/usr/share/postgresql
我已经设置了一个新的数据库,用于在PostgreSQL中安装话语。all later migrations canceled:
PG::Error: ERROR: could not open extension control file "/usr/share/postgresql/usr/local/rvm/gems/ruby-1.9.3-p385/gems/activerecord-3.2.12/lib/active_r
psql: FATAL: role "ubuntu" does not exist
首先,我想知道它的确切含义,然后再解决它。我也尝试过http://stackoverflow.com/questions/11919391/postgresql-error-fatal-role-username-does-not-exist这个链接