$ X=($(awk '/\[/ { p = 0 } /\[DATA-CENTER.S2]/ { p = 1; next } {sub(/.* *= */, "")} p' file1))

$ echo ${X[@]}
root3 adming no 192.168.1.101 /uploads

$ echo ${X[0]}
root3

$ echo ${X[1]}
adming


$ Y=($(sed -n "/\[DATA-CENTER.S2]/,/\[/ {/\[/d;s/.* *= *//;p;}" file1))

$ echo ${Y[@]}
root3 adming no 192.168.1.101 /uploads

$ echo ${Y[0]}
root3

$ echo ${Y[1]}
adming