我已经Ubuntu 14.04.5 LTS (GNU/Linux 4.2.0-27-generic x86_64)在我的服务器上安装了
当我想使用以下命令安装 mongodb3 时：
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv EA312927
sudo echo "deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.3 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.3.list
sudo apt-get update
sudo apt-get install -y --allow-unauthenticated mongodb-org
我在使用命令时收到以下错误sudo apt-get update：
Fetched 5,601 kB in 1min 5s (84.9 kB/s)
W: GPG error: http://extras.ubuntu.com precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192
W: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/trusty/mongodb-org/3.4/multiverse/binary-amd64/Packages 403 Forbidden
W: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/trusty/mongodb-org/3.3/multiverse/binary-amd64/Packages 403 Forbidden
W: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/trusty/mongodb-org/3.3/multiverse/binary-i386/Packages 403 Forbidden
E: Some index files failed to download. They have been ignored, or old ones used instead.
使用命令时我收到以下错误sudo apt-get install -y --allow-unauthenticated mongodb-org
E: Unable to locate package mongodb-org
我该如何修复它？