GlusterFS安装
## 环境CentOS 7.5
## Using Storage SIG Yum Repos
```
yum install centos-release-gluster -y
```
## Have at least two nodes
以下IP和hostname根据实际情况设置
```
# 修改hostname
hostnamectl set-hostname server1
# 修改hosts文件
tee /etc/hosts <<-'EOF'
192.168.161.131 server2
192.168.161.129 server1
EOF
```
## 添加硬盘
首先向Gluster节点上添加硬盘，使用`fdisk -l`命令查看，可以看到多出来的`/dev/sdb`
## Format and mount the bricks
```
mkfs.xfs -i size=512 /dev/sdb
mkdir -p /bricks/brick1
vi /etc/fstab
```
添加如下内容：
```
/dev/sdb /bricks/brick1 xfs defaults 1 2
```
保存然后退出
```
mount -a && mount
```
## Installing GlusterFS
```
yum install glusterfs-server -y
systemctl enable glusterd
systemctl start glusterd
firewall-cmd --zone=public --add-service=nfs --add-service=glusterfs --add-service=samba --add-service=samba-client --permanent
firewall-cmd --zone=public --add-port=111/tcp --add-port=139/tcp --add-port=445/tcp --add-port=965/tcp --add-port=2049/tcp --add-port=38465-38469/tcp --add-port=631/tcp --add-port=111/udp --add-port=963/udp --add-port=49152-49251/tcp--permanent
firewall-cmd --zone=public --add-port=24010/tcp --permanent
firewall-cmd --reload
firewall-cmd --zone=public --list-all
```
## Configure the trusted pool
From "server1"
```
gluster peer probe server2
```
Note: When using hostnames, the first server needs to be probed from **one** other server to set it's hostname.
From "server2"
```
gluster peer probe server1
```
Note: Once this pool has been established, only trusted members may probe new servers into the pool. A new server cannot probe the pool, it must be probed from the pool.
## Set up a GlusterFS volume
On both server1 and server2:
```
mkdir /bricks/brick1/gv0
```
From any single server:
```
gluster volume create gv0 replica 2 server1:/bricks/brick1/gv0 server2:/bricks/brick1/gv0
gluster volume start gv0
```
Confirm that the volume shows "Started":
```
gluster volume info
```
## Testing the GlusterFS volume
For this step, we will use one of the servers to mount the volume. Typically, you would do this from an external machine, known as a "client". Since using the method here would require additional packages to be installed on the client machine, we will use the servers as a simple place to test first.
```
mount -t glusterfs server1:/gv0 /mnt
for i in `seq -w 1 100`; do cp -rp /var/log/messages /mnt/copy-test-$i; done
```
First, check the mount point:
```
ls -lA /mnt | wc -l
```
You should see 100 files returned. Next, check the GlusterFS mount points on each server:
```
ls -lA /bricks/brick1/gv0
```
You should see 100 per server using the method we listed here. Without replication, in a distribute only volume (not detailed here), you should see about 50 each.
## Using GlusterFS Client
### On Ubuntu
#### Install glusterfs-client
```
sudo apt install -y glusterfs-client
# 修改hosts文件
tee /etc/hosts <<-'EOF'
192.168.161.131 server2
192.168.161.129 server1
EOF
sudo mkdir -p /mnt/glusterfs
sudo mount -t glusterfs server1:/gv0 /mnt/glusterfs
```
自动挂载
To mount a volume, edit the `/etc/fstab` file and add the following line:
```
server1:/gv0 /mnt/glusterfs glusterfs defaults,_netdev 0 0
```
> https://wiki.centos.org/SpecialInterestGroup/Storage/gluster-Quickstart
>
> (https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.4/)
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