Pseudo-distributed: to enable all the characters in a node: NN, DN, SNN
Fully distributed: the use of multiple clusters fully distributed
Review (Review)
Basic environment:
Deployment configuration:
1) Where to start role
NN:core-site.xml fs.defaultFS hdfs://node01:9000
DN:slaves:node01
SNN:hdfs-site.xml: dfs.namenode.secondary.http.address node01:50090
2) details of the configuration when starting role
dfs.namenode.name.dir
dfs.namenode.data.dir
Initialization & Start
format
FsImage
VERSION
start-dfs.sh
Load our configuration file
Tight manner by ssh-free start the appropriate role
Pseudo-distributed to a fully distributed: the role of re-planning
Thinking
- infrastructure
- Deployment Configuration
- Initialization run
- Use the command line
step
1. Stop all nodes