我创建了一些ansible次播放，其中一次添加了安装Docker和certbot所需的回购/密钥。
- name: Add Docker's GPG key
apt_key:
url: https://download.docker.com/linux/ubuntu/gpg
state: present
become: true
- name: Add Docker & Certbot repo
apt_repository:
repo: "{{ item }}"
state: present
become: true
with_items:
- "deb [arch=amd64] {{ docker_repo }} {{ ubuntu_release }} stable"
- "ppa:certbot/certbot"
这是奇怪的部分......
播放将运行的第一次时间，每次播放都会结束;
秒时间，播放失败，更新缓存错误;
当我登录实例并运行sudo apt update：
ubuntu@ip-10-0-1-246:~$ sudo apt update
Hit:1 http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial InRelease
0% [1 InRelease gpgv 247 kB] [Waiting for headers] [Connecting to security.ubuntu.com (91.189.91.26)] [Connecting to ppa.launchpad.net]Couldn't create tempfiles for splitting up /var/lib/apt/lists/eu-west-2.eErr:1 http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial InRelease
Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:2 http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
0% [2 InRelease gpgv 102 kB] [Waiting for headers] [Waiting for headers] [Connecting to ppa.launchpad.net]Couldn't create tempfiles for splitting up /var/lib/apt/lists/partial/eu-west-2.ec2.archive.ubuntu.comErr:2 http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial-updates InRelease
Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:3 http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
0% [3 InRelease gpgv 102 kB] [Waiting for headers] [Connecting to ppa.launchpad.net]Couldn't create tempfiles for splitting up /var/lib/apt/lists/partial/eu-west-2.ec2.archive.ubuntu.com_ubuntu_dists_xenial-bErr:3 http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial-backports InRelease
Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:4 http://ppa.launchpad.net/certbot/certbot/ubuntu xenial InRelease
Err:4 http://ppa.launchpad.net/certbot/certbot/ubuntu xenial InReleasepfiles for splitting up /var/lib/apt/lists/ppa.launchpad.net_certbot_certbot_ubuntu_dists_xenial_InRelease
Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:5 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Hit:6 https://download.docker.com/linux/ubuntu xenial InRelease
Err:6 https://download.docker.com/linux/ubuntu xenial InReleaseouldn't create tempfiles for splitting up /var/lib/apt/lists/download.docker.com_linux_ubuntu_dists_xenial_InRelease
Could not execute 'apt-key' to verify signature (is gnupg installed?)
Err:5 http://security.ubuntu.com/ubuntu xenial-security InReleaseng up /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_xenial-security_InRelease
Could not execute 'apt-key' to verify signature (is gnupg installed?)
Fetched 306 kB in 0s (791 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
10 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://eu-west-2.ec2.archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/certbot/certbot/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://download.docker.com/linux/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://security.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://eu-west-2.ec2.archive.ubuntu.com/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://eu-west-2.ec2.archive.ubuntu.com/ubuntu/dists/xenial-updates/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://eu-west-2.ec2.archive.ubuntu.com/ubuntu/dists/xenial-backports/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch https://download.docker.com/linux/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/certbot/certbot/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Some index files failed to download. They have been ignored, or old ones used instead
重启后问题解决了（!!!），然后在播放后再次出现同样的问题......
我还安装了gnugpg2但没有任何成功......
答案 0 :(得分：0)
这是/tmp文件夹权限问题。
出于某种原因（尚未想到），重启后重新启动：
drwxrwxrwt 8 root root 4096 Mar 9 10:59 /tmp
运行apt命令后：
drwxr-xr-x 11 root root 4096 Mar 9 10:44 /tmp
添加为tmp（无双关语）解决问题：
- name: Enforce appropriate /tmp folder permissions
file:
path: /tmp
owner: root
group: root
mode: 0777
become: true
changed_when: false