pipをアップデートしようしたんですが。

amazonのlightsailのopenSUSEにmezzanineをインストールする前に
pipをアップデートした方がいいと思って、
やってみたんですがこれが出てしまいました。
どうしたらいいでしょうか？

pip
1The directory '/home/ec2-user/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
2The directory '/home/ec2-user/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
3Collecting pip
4  Downloading https://files.pythonhosted.org/packages/d8/f3/413bab4ff08e1fc4828dfc59996d721917df8e8583ea85385d51125dceff/pip-19.0.3-py2.py3-none-any.whl (1.4MB)
5    100% |████████████████████████████████| 1.4MB 394kB/s 
6Installing collected packages: pip
7  Found existing installation: pip 7.1.2
8    Uninstalling pip-7.1.2:
9Exception:
10Traceback (most recent call last):
11  File "/usr/lib64/python3.4/shutil.py", line 527, in move
12    os.rename(src, real_dst)
13PermissionError: [Errno 13] Permission denied: '/usr/bin/pip' -> '/tmp/pip-l92cul9w-uninstall/usr/bin/pip'
14
15During handling of the above exception, another exception occurred:
16
17Traceback (most recent call last):
18  File "/usr/lib/python3.4/site-packages/pip/basecommand.py", line 211, in main
19    status = self.run(options, args)
20  File "/usr/lib/python3.4/site-packages/pip/commands/install.py", line 311, in run
21    root=options.root_path,
22  File "/usr/lib/python3.4/site-packages/pip/req/req_set.py", line 640, in install
23    requirement.uninstall(auto_confirm=True)
24  File "/usr/lib/python3.4/site-packages/pip/req/req_install.py", line 716, in uninstall
25    paths_to_remove.remove(auto_confirm)
26  File "/usr/lib/python3.4/site-packages/pip/req/req_uninstall.py", line 125, in remove
27    renames(path, new_path)
28  File "/usr/lib/python3.4/site-packages/pip/utils/__init__.py", line 315, in renames
29    shutil.move(old, new)
30  File "/usr/lib64/python3.4/shutil.py", line 532, in move
31    os.unlink(src)
32PermissionError: [Errno 13] Permission denied: '/usr/bin/pip'
33You are using pip version 7.1.2, however version 19.0.3 is available.
34You should consider upgrading via the 'pip install --upgrade pip' command.